OPTICAL SENSORS THAT REDUCE SPECTRAL REFLECTIONS
First Claim
1. An optical sensor device, comprising:
- a light source including one or more light emitting elements;
a light detector including one or more light detecting elements;
a first opaque light barrier portion configured to block light from being transmitted directly from the light source to the light detector, said first opaque light barrier portion between the light source and the light detector and; and
a second opaque light barrier portion configured to reduce an amount of specular reflections, if a light transmissive cover plate were placed over the optical sensor device, said second opaque light barrier portion extending from the first opaque light barrier portion, in a direction towards the light source.
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Accused Products
Abstract
An optical sensor device, according to an embodiment of the present invention, includes a light source and a light detector. The light source includes one or more light emitting elements, and the light detector includes one or more light detecting elements. A first opaque light barrier portion, between the light source and the light detector, is configured to block light from being transmitted directly from the light source to the light detector. A second opaque light barrier portion, extending from the first opaque light barrier portion in a direction towards the light source, is configured to reduce an amount of specular reflections that would occur if a light transmissive cover plate were placed over the optical sensor device. A third opaque light barrier portion, extending from the first light barrier portion in a direction towards to the light detector, is configured to reduce an amount of specular reflections that would be detected by the light detector, if a light transmissive cover plate were placed over the optical sensor device.
151 Citations
26 Claims
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1. An optical sensor device, comprising:
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a light source including one or more light emitting elements; a light detector including one or more light detecting elements; a first opaque light barrier portion configured to block light from being transmitted directly from the light source to the light detector, said first opaque light barrier portion between the light source and the light detector and; and a second opaque light barrier portion configured to reduce an amount of specular reflections, if a light transmissive cover plate were placed over the optical sensor device, said second opaque light barrier portion extending from the first opaque light barrier portion, in a direction towards the light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for providing an optical sensor device, comprising:
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(a) forming first and second cavities that are separated by a first opaque light barrier portion; (b) attaching a light source within the first cavity and a light detector within the second cavity so that the first opaque light barrier portion is between the light detector and the light source; and (c) forming a second opaque light barrier portion that extends from the first opaque light barrier portion, in a direction towards the first cavity, wherein the second opaque light barrier portion is configured to reduce an amount of specular reflections, if a light transmissive cover plate were placed over the first and second cavities. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. A device, comprising:
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a light source including one or more light emitting elements; a light detector including one or more light detecting elements; a first opaque light barrier portion configured to block light from being transmitted directly from the light source to the light detector, said first opaque light barrier portion between the light source and the light detector; and a second opaque light barrier portion extending from the first opaque light barrier portion in a direction toward the light source; and a light transmissive cover placed over the light source and the light detector; wherein the second opaque light barrier portion is configured to reduce an amount of specular reflections caused by the light transmissive cover being placed over the light source. - View Dependent Claims (25)
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26. A system, comprising:
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a light source including one or more light emitting elements; a driver configured to drive the light source; a light detector including one or more light detecting elements and configured to produce a signal indicative of an amount of detected light; a processor and/or circuitry configured to detect a proximity of an object in dependence on the signal indicative of the amount of detected light; a subsystem configured to be enabled or disable based on the detected proximity of an object; a first opaque light barrier portion configured to block light from being transmitted directly from the light source to the light detector, said first opaque light barrier portion between the light source and the light detector; a second opaque light barrier portion extending from the first opaque light barrier portion in a direction toward the light source; and a light transmissive cover placed over the light source and the light detector; wherein the second opaque light barrier portion is configured to reduce an amount of specular reflections caused by the light transmissive cover being placed over the light source.
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Specification