Method for designing a colorimeter having illuminant-weighted CIE color-matching filters
First Claim
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1. A method for determining a design of a color-measuring device, comprising:
- determining a plurality of light detectors; and
determining a plurality of filters having a plurality of colorants that are permanently deposited onto the color-measuring device;
wherein the colorants permit reflected light to pass through the filters to cause the light detectors to produce an output approximating a plurality of spectral responses of at least one CIE-like color-matching function weighted by a reference illuminant spectrum.
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Abstract
A method for determining the optimal colorant thicknesses and linear combinations for integral illuminant-weighted CIE color-matching filters is provided. A reflectance colorimeter for configuring printers may be designed using this method.
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Citations
23 Claims
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1. A method for determining a design of a color-measuring device, comprising:
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determining a plurality of light detectors; and
determining a plurality of filters having a plurality of colorants that are permanently deposited onto the color-measuring device;
wherein the colorants permit reflected light to pass through the filters to cause the light detectors to produce an output approximating a plurality of spectral responses of at least one CIE-like color-matching function weighted by a reference illuminant spectrum. - View Dependent Claims (2, 3, 4, 5)
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6. A method for designing a colorimeter having integral illuminant-weighted CIE-like color-matching filters, comprising:
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determining a set of channels from a plurality of channels;
determining a set of filters, each filter being permanently deposited on each of the channels, each filter being an absorptive filter, each filter having at least one layer, at least one channel having at least one filter with a double layer so that a linear combination of the set of channels weighted by a calorimeter illuminant spectrum matches a set of CIE-like target color-matching functions weighted by a reference illuminant spectrum within a tolerance, each channel integrating at least one detector and at least one filter onto a single semiconductor substrate;
determining a colorant for each layer on each channel from a set of colorants; and
determining a thickness of each layer on each channel. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for designing a calorimeter having integral illuminant-weighted CIE color-matching filters, comprising:
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receiving a plurality of colorants and a plurality of target CIE-like color-matching functions;
determining a plurality of channel colorant recipes and a plurality of additive mixtures of channels weighted by a calorimeter illuminant spectrum to match the target CIE-like functions weighted by a reference illuminant spectrum within a tolerance for a minimum number of channels and colorants per channel, each channel being one of a plurality of channels in a calorimeter, each channel having a filter covering each detector; and
providing a best solution from the channel colorant recipes and the additive mixtures of channels, the best solution including a set of channels, a thickness for each colorant in each channel, and a matrix of linear coefficients. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A computer-readable medium having stored thereon a plurality of instructions, the plurality of instructions including instructions which, when executed by a processor, cause the processor to perform the steps of a method for designing a colorimeter having integral CIE color-matching filters, comprising:
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determining a plurality of light detectors; and
determining a plurality of filters having a plurality of colorants that are permanently deposited onto the color-measuring device;
wherein the colorants permit reflected light to pass through the filters to cause the light detectors to produce an output approximating a plurality of spectral responses of at least one CIE-like color-matching function weighted by a reference illuminant spectrum.
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Specification