Electronic Devices Having Infrared Blocking Light Guides
First Claim
1. An electronic device, comprising:
- a transparent member having an optical component window;
a light sensor; and
a light guide configured to guide light from the optical component window to the light sensor, wherein the light guide has a core configured to block infrared light and has a cladding surrounding the core.
1 Assignment
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Accused Products
Abstract
An electronic device may be provided with a display. An opaque layer may be formed on an inner surface of a display cover layer in an inactive area of the display. An optical component window may be formed from the opening. A light guide may be aligned with the optical component window and may be used to guide light from the optical component window to an optical component such as an ambient light sensor. The light guide may have a core surrounded by a cladding. The core may be formed from a material such as blue glass that absorbs infrared light and that transmits visible light. Particles of titanium dioxide or other high-refractive-index material may be incorporated into the core to enhance the refractive index of the core. Thin-film interference filters may be formed on the light guide to enhance infrared light blocking.
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Citations
20 Claims
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1. An electronic device, comprising:
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a transparent member having an optical component window; a light sensor; and a light guide configured to guide light from the optical component window to the light sensor, wherein the light guide has a core configured to block infrared light and has a cladding surrounding the core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An electronic device, comprising:
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pixels configured to display images; a display cover layer that overlaps the pixels; an infrared light source configured to emit infrared light; a light guide comprising a core surrounded by a cladding, wherein the core is configured to transmit visible light and block the infrared light; and an ambient light sensor configured to receive ambient visible light through the light guide. - View Dependent Claims (18, 19)
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20. An electronic device, comprising:
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a glass layer having a portion defining an optical component window through which light passes; a light guide having a core of infrared-light-blocking glass surrounded by a cladding; a thin-film interference filter on a surface of the light guide; and an optical component aligned with the light guide.
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Specification