Determination of interferometric modulator mirror curvature and airgap variation using digital photographs
First Claim
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1. A method comprising:
- determining, in an electronic device, color parameters for light reflected from a particular location of an interferometer having a first reflective surface and a second reflective surface parallel to the first reflective surface; and
determining, in the electronic device, an estimated distance between the first and second reflective surfaces at the particular location by comparing the determined color parameters with a model stored in a memory.
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Abstract
Air gap variation in an interferometric modulator over a two-dimensional spatial map of the modulator is determined by acquiring a digital photograph of the modulator. Color parameters of individual pixels in the photograph are determined and compared to a model of color parameters as a function of air gap distance. The model and individual pixel color parameters may be plotted on a color space plot for comparison. The determined distances may be plotted over a two-dimensional spatial map of the interferometric modulator to visualize the mirror curvature and air gap variation.
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Citations
14 Claims
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1. A method comprising:
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determining, in an electronic device, color parameters for light reflected from a particular location of an interferometer having a first reflective surface and a second reflective surface parallel to the first reflective surface; and determining, in the electronic device, an estimated distance between the first and second reflective surfaces at the particular location by comparing the determined color parameters with a model stored in a memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A computer-readable medium comprising code which, when executed, causes a processor to perform a method comprising:
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determining color parameters for light reflected from a particular location of an interferometer having a first reflective surface and a second reflective surface parallel to the first reflective surface; and determining an estimated distance between the first and second reflective surfaces at the particular location by comparing the determined color parameters with a model. - View Dependent Claims (11, 12, 13, 14)
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Specification