METHOD AND SYSTEM FOR SENSING LIGHT USING INTERFEROMETRIC ELEMENTS
First Claim
1. A light sensor having at least one interferometric element, the interferometric element 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; and
a temperature sensor coupled to 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.
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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
19 Claims
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1. A light sensor having at least one interferometric element, the interferometric element 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; and a temperature sensor coupled to 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A display device having a light sensor, the display device comprising:
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a housing; and an interferometric element within the housing, the interferometric element 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; and a temperature sensor coupled to 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. - View Dependent Claims (18, 19)
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Specification