Apparatus and method for measuring optical characteristics of an object
DC
First Claim
Patent Images
1. A method of determining a characteristic of an object or material comprising the steps of:
- receiving light from the object or material;
coupling received light to one or more sensors;
generating at least one signal having a frequency proportional to the light intensity received by the one or more sensors; and
determining the characteristic based on the at least one signal;
wherein the light passes through a filter prior to being coupled to one or more of the sensors.
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Accused Products
Abstract
Color measuring systems and methods are disclosed. Perimeter receiver fiber optics are spaced apart from a central source fiber optic and receive light reflected from the surface of the object being measured. Light from the perimeter fiber optics pass to a variety of filters. The system utilizes the perimeter receiver fiber optics to determine information regarding the height and angle of the probe with respect to the object being measured. Under processor control, the color measurement may be made at a predetermined height and angle. Various color spectral photometer arrangements are disclosed. Translucency, fluorescence and/or surface texture data also may be obtained. Audio feedback may be provided to guide operator use of the system. The probe may have a removable or shielded tip for contamination prevention.
157 Citations
122 Claims
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1. A method of determining a characteristic of an object or material comprising the steps of:
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receiving light from the object or material;
coupling received light to one or more sensors;
generating at least one signal having a frequency proportional to the light intensity received by the one or more sensors; and
determining the characteristic based on the at least one signal;
wherein the light passes through a filter prior to being coupled to one or more of the sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of determining a characteristic of an object or material comprising the steps of:
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receiving light from the object or material;
coupling received light to a plurality of sensors;
generating a plurality of signals having a frequency proportional to the light intensity received by the sensors; and
determining the characteristic based on the signals;
wherein the light passes through a filter prior to being coupled to the sensors, wherein spectral characteristics are determined based on measuring a period of a plurality of the signals. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of determining a characteristic of an object or material comprising the steps of:
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receiving light from the object or material;
coupling received light to one or more sensors;
generating at least one signal having a frequency proportional to the light intensity received by the one or more sensors; and
determining the characteristic based on the at least one signal;
wherein the light passes through a filter prior to being coupled to one or more of the sensors, wherein the filter comprises a plurality of filter portions having a wavelength dependent optical transmission property.
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31. A method of determining a characteristic of an object or material comprising the steps of:
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receiving light from the object or material;
coupling received light to one or more sensors;
generating at least one signal having a frequency proportional to the light intensity received by the one or more sensors; and
determining the characteristic based on the at least one signal;
wherein the light passes through a filter prior to being coupled to one or more of the sensors, wherein the filter comprises a plurality of cut-off filter elements.
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32. A method of determining a characteristic of an object or material comprising the steps of:
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receiving light from the object or material;
coupling received light to one or more sensors;
generating at least one signal having a frequency proportional to the light intensity received by the one or more sensors; and
determining the characteristic based on the at least one signal;
wherein the light passes through a filter prior to being coupled to one or more of the sensors, wherein the filter comprises a color gradient filter.
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33. A method of determining a characteristic of an object or material comprising the steps of:
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receiving light from the object or material;
coupling received light to one or more sensors;
generating at least one signal having a frequency proportional to the light intensity received by the one or more sensors; and
determining the characteristic based on the at least one signal;
wherein the light passes through a filter prior to being coupled to one or more of the sensors, wherein the filter comprises a filter grid.
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34. A method of determining a characteristic of an object or material comprising the steps of:
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receiving light from the object or material;
coupling received light to one or more sensors;
generating at least one signal having a frequency proportional to the light intensity received by the one or more sensors; and
determining the characteristic based on the at least one signal;
wherein the light passes through a filter prior to being coupled to one or more of the sensors, wherein the received light is spectrally analyzed without using a diffraction grating.
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35. A method of determining a characteristic of an object or material comprising the steps of:
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receiving light from the object or material;
coupling received light to one or more sensors;
generating at least one signal having a frequency proportional to the light intensity received by the one or more sensors; and
determining the characteristic based on the at least one signal;
wherein the light is received by a probe, wherein a plurality of measurements are taken at a plurality of distances of the probe with respect to the object or material.
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36. A method of determining a characteristic of an object or material comprising the steps of:
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receiving light from the object or material;
coupling received light to one or more sensors;
generating at least one signal having a frequency proportional to the light intensity received by the one or more sensors; and
determining the characteristic based on the at least one signal;
wherein a probe having one or more light sources provides light to the object or material, wherein light from the one or more light sources is received by the one or more light receivers from the object or material. - View Dependent Claims (37, 38, 39)
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40. A method comprising the steps of:
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producing relative movement between a probe and an object or material, wherein the probe provides light provided by one or more light sources to the object or material and receives light from the object or material by one or more light receivers;
coupling light received be the one or more light receivers to a plurality of optical sensors through a color gradient filter; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein the plurality of optical sensors comprise a plurality of light to frequency converter sensing elements.
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41. A method comprising the steps of:
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producing relative movement between a probe and an object or material, wherein the probe provides light provided by one or more light sources to the object or material and receives light from the object or material by one or more light receivers;
coupling light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein the determining step comprises generating at least one signal having a frequency proportional to the light intensity received by the optical sensors; and
determining the optical characteristics based on the at least one signal. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49)
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50. A method comprising the steps of:
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producing relative movement between a probe and an object or material, wherein the probe provides light provided by one or more light sources to the object or material and receives light from the object or material by one or more light receivers;
coupling light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein the plurality of optical sensors comprise a matrix of sensors.
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51. A method comprising the steps of:
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producing relative movement between a probe and an object or material, wherein the probe provides light provided by one or more light sources to the object or material and receives light from the object or material by one or more light receivers;
coupling light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein a plurality of measurements are taken at a plurality of distances of the probe with respect to the object or material. - View Dependent Claims (52, 53)
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54. A method comprising the steps of:
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producing relative movement between a probe and an object or material, wherein the probe provides light provided by one or more light sources to the object or material and receives light from the object or material by one or more light receivers;
coupling light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein one or more optical sensors determine a distance of the probe with respect to the object or material. - View Dependent Claims (55)
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56. A method comprising the steps of:
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producing relative movement between a probe and an object or material, wherein the probe provides light provided by one or more light sources to the object or material and receives light from the object or material by one or more light receivers;
coupling light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein one or more optical sensors determine an angle of the probe with respect to the object or material.
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57. A method comprising the steps of:
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producing relative movement between a probe and an object or material, wherein the probe provides light provided by one or more light sources to the object or material and receives light from the object or material by one or more light receivers;
coupling light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein one or more optical sensors determine a distance and an angle of the probe with respect to the object or material.
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58. A method comprising the steps of:
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receiving light from an object or material with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received be the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein the plurality of optical sensors comprise a plurality of light to frequency converter sensing elements.
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59. A method comprising the steps of:
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receiving light from an object or material with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein the determining step comprises generating at least one signal having a frequency proportional to the light intensity received by the one or more optical sensors; and
determining the optical characteristics based on the at least one signal. - View Dependent Claims (60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. A method comprising the steps of:
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receiving light from an object or material with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein the plurality of optical sensors comprise a matrix of sensors.
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72. A method comprising the steps of:
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receiving light from an object or material with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein the light is received by a probe, wherein a plurality of measurements are taken at a plurality of distances of the probe with respect to the object or material. - View Dependent Claims (73)
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74. A method comprising the steps of:
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receiving light from an object or material with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein a probe having one or more light sources provides light to the object or material;
wherein light from the one or more light sources is received by the one or more light receivers from the object or material;
wherein a plurality of measurements are taken at a plurality of distances of the probe with respect to the object or material.
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75. A method comprising the steps of:
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receiving light from an object or material with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein a probe having one or more light sources provides light to the object or material, wherein light from the one or more light sources is received by the one or more light receivers from the object or material;
wherein one or more optical sensors determine a distance of the probe with respect to the object or material.
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76. A method comprising the steps of:
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receiving light from an object or material with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein a probe having one or more light sources provides light to the object or material, wherein light from the one or more light sources is received by the one or more light receivers from the object or material;
wherein one or more optical sensors determine an angle of the probe with respect to the object or material.
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77. A method comprising the steps of:
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receiving light from an object or material with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the object or material;
wherein a probe having one or more light sources provides light to the object or material, wherein light from the one or more light sources is received by the one or more light receivers from the object or material;
wherein one or more optical sensors determine a distance and an angle of the probe with respect to the object or material.
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78. A method comprising the steps of:
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receiving light that is to be spectrally analyzed with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the received light;
wherein the plurality of optical sensors comprise a plurality of light to frequency converter sensing elements.
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79. A method comprising the steps of:
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receiving light that is to be spectrally analyzed with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the received light;
wherein the determining step comprises generating at least one signal having a frequency proportional to the light intensity received by the one or more optical sensors; and
determining the optical characteristics based on the at least one signal. - View Dependent Claims (80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90)
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91. A method comprising the steps of:
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receiving light that is to be spectrally analyzed with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the received light;
wherein the plurality of optical sensors comprise a matrix of sensors.
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92. A method comprising the steps of:
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receiving light that is to be spectrally analyzed with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the received light;
wherein the light is received by a probe, wherein a plurality of measurements are taken at a plurality of distances of the probe with respect to the object or material. - View Dependent Claims (93)
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94. A method comprising the steps of:
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receiving light that is to be spectrally analyzed with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the received light;
wherein a probe having one or more light sources provides light to an object or material, wherein light from the one or more light sources is received by the one or more light receivers from the object or material;
wherein a plurality of measurements are taken at a plurality of distances of the probe with respect to the object or material.
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95. A method comprising the steps of:
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receiving light that is to be spectrally analyzed with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive list received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the received light;
wherein a probe having one or more light sources provides light to an object or material, wherein light from the one or more light sources is received by the one or more light receivers from the object or material;
wherein one or more optical sensors determine a distance of the probe with respect to the object or material.
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96. A method comprising the steps of:
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receiving light that is to be spectrally analyzed with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the received light;
wherein a probe having one or more light sources provides light to an object or material, wherein light from the one or more light sources is received by the one or more light receivers from the object or material;
wherein one or more optical sensors determine an angle of the probe with respect to the object or material.
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97. A method comprising the steps of:
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receiving light that is to be spectrally analyzed with one or more light receivers, the one or more light receivers providing light at a plurality of spaced apart receiver outputs;
coupling the light received by the one or more light receivers to a plurality of optical sensors through a color gradient filter, wherein the plurality of optical sensors receive light received by the one or more light receivers from the plurality of spaced apart receiver outputs through the color gradient filter, wherein the plurality of spaced apart receiver outputs, a plurality of portions of the color gradient filter and the plurality of optical sensors are positionally arranged in a corresponding manner; and
determining the optical characteristics including at least spectral characteristics of the received light;
wherein a probe having one or more light sources provides light to an object or material, wherein light from the one or more light sources is received by the one or more light receivers from the object or material;
wherein one or more optical sensors determine a distance and an angle of the probe with respect to the object or material.
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98. A method comprising the steps of:
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receiving light with one or more light receivers wherein the one or more light receivers receive light to be spectrally analyzed; and
coupling light received by the one or more light receivers to an optical sensor through a color filter, wherein the color filter has a plurality of portions, wherein each of the plurality of portions has a wavelength dependent light transmission property covering a predetermined band or bands of wavelengths, wherein the predetermined bands of the plurality of portions cover a predetermined band of wavelengths to be spectrally analyzed wherein light from the one or more light receivers is coupled to the plurality of portions of the color filter, wherein the optical sensor has a plurality of sensing elements, wherein light received by the one or more light receivers is coupled to the sensing elements through the plurality of portions of the color filter;
wherein light received by the one or more light receivers is spectrally analyzed without using a diffraction grating;
wherein the optical sensor comprises a plurality of light to frequency converter sensing elements. - View Dependent Claims (99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109)
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110. A method comprising the steps of:
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receiving light with one or more light receivers, wherein the one or more light receivers receive light to be spectrally analyzed; and
coupling light received by the one or more light receivers to an optical sensor through a color filter, wherein the color filter has a plurality of portions, wherein each of the plurality of portions has a wavelength dependent light transmission property covering a predetermined band or bands of wavelengths, wherein the predetermined bands of the plurality of portions cover a predetermined band of wavelengths to be spectrally analyzed, wherein light from the one or more light receivers is coupled to the plurality of portions of the color filter, wherein the optical sensor has a plurality of sensing elements, wherein light received by the one or more light receivers is coupled to the sensing elements through the plurality of portions of the color filter;
wherein light received by the one or more light receivers is spectrally analyzed without using a diffraction grating;
wherein the optical sensor integrates the received light.
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111. A method comprising the steps of:
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receiving light with one or more light receivers, wherein the one or more light receivers receive light to be spectrally analyzed; and
coupling light received by the one or more light receivers to an optical sensor through a color filter, wherein the color filter has a plurality of portions, wherein each of the plurality of portions has a wavelength dependent light transmission property covering a predetermined band or bands of wavelengths, wherein the predetermined bands of the plurality of portions cover a predetermined band of wavelengths to be spectrally analyzed, wherein light from the one or more light receivers is coupled to the plurality of portions of the color filter, wherein the optical sensor has a plurality of sensing elements, wherein light received by the one or more light receivers is coupled to the sensing elements through the plurality of portions of the color filter;
wherein light received by the one or more light receivers is spectrally analyzed without using a diffraction grating;
wherein a probe having one or more light sources provides light to an object or material, wherein light from the one or more light sources is received by the one or more light receivers from the object or material. - View Dependent Claims (112, 113, 114, 115, 116, 117, 118, 119)
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120. A method comprising the steps of:
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receiving light with one or more light receivers, wherein the one or more light receivers receive light to be spectrally analyzed; and
coupling light received by the one or more light receivers to an optical sensor through a color filter, wherein the color filter has a plurality of portions, wherein each of the plurality of portions has a wavelength dependent light transmission property covering a predetermined band or bands of wavelengths, wherein the predetermined bands of the plurality of portions cover a predetermined band of wavelengths to be spectrally analyzed, wherein light from the one or more light receivers is coupled to the plurality of portions of the color filter, wherein the optical sensor has a plurality of sensing elements, wherein light received by the one or more light receivers is coupled to the sensing elements through the plurality of portions of the color filter;
wherein light received by the one or more light receivers is spectrally analyzed without using a diffraction grating;
wherein a probe having one or more light sources provides light to an object or material, wherein light from the one or more light sources is received by the one or more light receivers from the object or material;
wherein one or more optical sensors determine an angle of the probe with respect to the object or material.
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121. A method comprising the steps of:
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receiving light with one or more light receivers, wherein the one or more light receivers receive light to be spectrally analyzed; and
coupling light received by the one or more light receivers to an optical sensor through a color filter, wherein the color filter has a plurality of portions, wherein each of the plurality of portions has a wavelength dependent light transmission property covering a predetermined band or bands of wavelengths, wherein the predetermined bands of the plurality of portions cover a predetermined band of wavelengths to be spectrally analyzed, wherein light from the one or more light receivers is coupled to the plurality of portions of the color filter, wherein the optical sensor has a plurality of sensing elements, wherein light received by the one or more light receivers is coupled to the sensing elements through the plurality of portions of the color filter;
wherein light received by the one or more light receivers is spectrally analyzed without using a diffraction grating;
wherein a probe having one or more light sources provides light to an object or material, wherein light from the one or more light sources is received by the one or more light receivers from the object or material;
wherein one or more optical sensors determine a distance and an angle of the probe with respect to the object or material.
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122. A method comprising the steps of:
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receiving light with one or more light receivers, wherein the one or more light receivers receive light to be spectrally analyzed; and
coupling light received by the one or more light receivers to an optical sensor through a color filter, wherein the color filter has a plurality of portions, wherein each of the plurality of portions has a wavelength dependent light transmission property covering a predetermined band or bands of wavelengths, wherein the predetermined bands of the plurality of portions cover a predetermined band of wavelengths to be spectrally analyzed, wherein light from the one or more light receivers is coupled to the plurality of portions of the color filter, wherein the optical sensor has a plurality of sensing elements, wherein light received by the one or more light receivers is coupled to the sensing elements through the plurality of portions of the color filter;
wherein light received by the one or more light receivers is spectrally analyzed without using a diffraction grating;
wherein the plurality of sensing elements comprise a matrix of sensing elements.
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Specification
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Litigation Data
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Current AssigneeRPX Corporation
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Original AssigneeLJ Laboratories L.L.C.
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InventorsJung, Wayne D., Jung, Russell W., Loudermilk, Alan R.
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Primary Examiner(s)Evans, F L.
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Application NumberUS09/267,825Time in Patent Office956 DaysField of Search356/73, 356/371, 356/416, 356/417, 356/419, 356/446, 356/405, 356/407US Class Current356/419CPC Class CodesA61B 2560/0223 of calibration, e.g. protoc...A61B 2560/0233 Optical standardsA61C 19/10 Supports for artificial tee...G01J 3/02 DetailsG01J 3/0208 using focussing or collimat...G01J 3/0218 using optical fibersG01J 3/0264 Electrical interface; User ...G01J 3/0272 HandheldG01J 3/0291 Housings; Spectrometer acce...G01J 3/0297 Constructional arrangements...G01J 3/04 Slit arrangements slit adju...G01J 3/10 Arrangements of light sourc...G01J 3/46 Measurement of colour; Colo...G01J 3/50 using electric radiation de...G01J 3/508 measuring the colour of teethG01J 3/51 using colour filtersG01J 3/513 having fixed filter-detecto...G01J 3/524 Calibration of colorimetersG01N 2021/6484 Optical fibresG01N 21/251 Colorimeters; Construction ...View All
