Proximity sensor arrangement in a mobile device
First Claim
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1. An electronic device comprising:
- a radiation passing layer having a top surface and a bottom surface;
a proximity sensor having a radiation emitter and a radiation detector, both positioned below the radiation passing layer;
a radiation shield positioned between the emitter and the detector, and extending to the bottom surface of the radiation passing layer; and
a radiation absorber being a separate piece and of a different material than the shield and positioned to provide a radiation seal between a top surface of the shield and the bottom surface of the radiation passing layer wherein the absorber is formed as a mask that has two holes formed therein directly above the emitter and the detector, respectively.
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Abstract
A radiation passing layer has a top surface and a bottom surface below which a proximity sensor is positioned. A radiation shield is between the emitter and the detector, and extends to the bottom of the radiation passing layer. A radiation absorber being a separate piece and of a different material than the shield is positioned to provide a radiation seal between the top surface of the shield and the bottom surface of the radiation passing layer. Other embodiments are also described and claimed.
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Citations
19 Claims
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1. An electronic device comprising:
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a radiation passing layer having a top surface and a bottom surface; a proximity sensor having a radiation emitter and a radiation detector, both positioned below the radiation passing layer; a radiation shield positioned between the emitter and the detector, and extending to the bottom surface of the radiation passing layer; and a radiation absorber being a separate piece and of a different material than the shield and positioned to provide a radiation seal between a top surface of the shield and the bottom surface of the radiation passing layer wherein the absorber is formed as a mask that has two holes formed therein directly above the emitter and the detector, respectively. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electronic device comprising:
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a wireless telephony handset housing having an infrared light passing layer whose top face is part of an exterior face of the housing and whose bottom face is inside the housing; a proximity sensor having an infrared emitter and an infrared detector both positioned below the bottom face of the light passing layer, inside the housing; an internal frame member positioned between the emitter and the detector, the frame member to block infrared radiation between the emitter and the detector; and an infrared absorber being a mask that is of a different material than the frame member and has two holes formed therein, wherein the mask is positioned between a top surface of the frame member and the bottom surface of the light passing layer such that the two holes are directly above the emitter and the detector, respectively. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for manufacturing an electronic device, comprising:
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applying an infrared absorber being a mask having two holes formed therein, to the bottom surface of a radiation passing layer; and
thenpositioning the radiation passing layer into an exterior housing of a mobile device and fixing the radiation passing layer in place while the absorber is in contact with a top surface of an internal frame member in the housing that lies between an infrared emitter and an infrared detector of a proximity sensor in the housing, such that the two holes of the mask are aligned with a radiation passage for the emitter and the detector, respectively. - View Dependent Claims (19)
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Specification