Method and system for sensing light using an interferometric element having a coupled temperature sensor
First Claim
1. A light sensor comprising:
- a first surface which is at least partially transmissive and at least partially reflective to at least one wavelength of light;
a second surface which is at least partially reflective to the at least one wavelength of light, wherein the second surface is substantially parallel to and spaced a first distance from the first surface;
a temperature sensor thermally coupled to and abutting the first surface, wherein the temperature sensor is responsive to changes of temperature of the first surface caused at least in part by absorption of the at least one wavelength of light; and
a processor configured to determine an intensity in the absorbed at least one wavelength of light based on the response of the temperature sensor.
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Accused Products
Abstract
Certain embodiments of the invention provide a light sensor comprising at least one interferometric element that absorbs light in at least one wavelength. The interferometric element comprises a first surface and a second surface substantially parallel to the first surface. The second surface is spaced a gap distance from the first surface in a direction substantially perpendicular to the first surface. The light wavelength absorbed is dependent on the gap distance. The interferometric element further comprises a temperature sensor. The temperature sensor is responsive to changes in temperature of at least a portion of the interferometric element due to absorption of light by the interferometric element.
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Citations
18 Claims
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1. A light sensor comprising:
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a first surface which is at least partially transmissive and at least partially reflective to at least one wavelength of light; a second surface which is at least partially reflective to the at least one wavelength of light, wherein the second surface is substantially parallel to and spaced a first distance from the first surface; a temperature sensor thermally coupled to and abutting the first surface, wherein the temperature sensor is responsive to changes of temperature of the first surface caused at least in part by absorption of the at least one wavelength of light; and a processor configured to determine an intensity in the absorbed at least one wavelength of light based on the response of the temperature sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A display device comprising:
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a housing; a light sensor within the housing comprising; a first surface which is at least partially transmissive and at least partially reflective to at least one wavelength of light, a second surface which is at least partially reflective to the at least one wavelength of light, wherein the second surface is substantially parallel to and spaced a first distance from the first surface; a temperature sensor thermally coupled to and abutting the first surface, wherein the temperature sensor is responsive to changes of temperature of the first surface caused at least in part by absorption of the at least one wavelength of light; and a processor configured to determine an intensity in the absorbed at least one wavelength of light based on the response of the temperature sensor. - View Dependent Claims (16, 17, 18)
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Specification