REFLECTIVE SURFACE TREATMENTS FOR OPTICAL SENSORS
First Claim
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1. An electronic device comprising:
- a housing with a surface;
a reflective layer that is formed on the surface, wherein the reflective layer has first and second openings;
a light emitter that emits light through the first opening; and
a light detector that receives the light emitted by the light emitter through the second opening.
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Abstract
An electronic device includes one or more light emitters for emitting light toward an object and one or more light detectors for collecting light exiting the object. A reflective coating, surface, or surface finish can be applied adjacent to the area to which light is emitted and/or through which light exits in order to increase the light collected by the light detector. The reflective coating can be oriented so as to reflect light back into the object.
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20 Claims
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1. An electronic device comprising:
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a housing with a surface; a reflective layer that is formed on the surface, wherein the reflective layer has first and second openings; a light emitter that emits light through the first opening; and a light detector that receives the light emitted by the light emitter through the second opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electronic device comprising:
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a housing with first and second opposing sides; a display on the first side of the housing; a lens on the second side of the housing; a light-emitting diode that emits infrared light through the lens; a filter on the second side of the housing; a light detector configured to detect the infrared light emitted by the light-emitting diode that passes through the filter. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. An electronic device comprising:
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a housing with first and second cavities; a light emitter in the first cavity that emits light; a light detector in the second cavity that detects the light emitted by the light emitter after the light reflects from an object; and a reflector that is interposed between the first cavity and the second cavity.
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Specification