Electronic devices with light sensor waveguides
First Claim
1. An electronic device, comprising:
- a housing;
an ambient light sensor window;
an ambient light sensor in the housing; and
a light guide in the housing between the ambient light sensor window and the ambient light sensor, wherein the light guide has a core, a metal coating, and a dielectric layer between the metal coating and the core, and wherein the dielectric layer comprises a thin-film interference filter formed from a stack of multiple thin-film coatings.
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Accused Products
Abstract
An electronic device may have a housing with a display. A transparent portion of the housing may serve as a display cover layer and may overlap an array of pixels in the display. The array of pixels may form an active area of the display for displaying images for a user. An ambient light sensor window may be formed in an inactive area of the display that does not overlap pixels. An ambient light sensor may be mounted in an interior region of the housing. A metal-coated light guide may have a first end aligned with the ambient light sensor window to receive ambient light from an exterior region surrounding the device and may have a second end at which the ambient light is provided to the ambient light sensor.
79 Citations
17 Claims
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1. An electronic device, comprising:
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a housing; an ambient light sensor window; an ambient light sensor in the housing; and a light guide in the housing between the ambient light sensor window and the ambient light sensor, wherein the light guide has a core, a metal coating, and a dielectric layer between the metal coating and the core, and wherein the dielectric layer comprises a thin-film interference filter formed from a stack of multiple thin-film coatings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An electronic device comprising:
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a transparent display cover layer; a light guide having an entrance configured to receive ambient light that has passed through the display cover layer, wherein the light guide has a core and has coating layers including a metal coating layer, a first dielectric layer between the metal coating layer and the core, and a second dielectric layer on an exterior surface of the metal coating layer; a color ambient light sensor configured to receive the ambient light after the ambient light has reflected from the coating layers while passing through the core; pixels; and control circuitry configured to adjust the pixels using a measurement from the color ambient light sensor. - View Dependent Claims (13, 14, 15)
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16. An electronic device comprising:
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a housing configured to separate an interior region from an exterior region surrounding the housing; an optical component window in the housing; a light guide having first and second ends, wherein the first end is aligned with the optical component window, wherein the light guide has a core with a metal coating, and wherein the light guide comprises multiple thin-film dielectric layers between the metal coating and the core; and an optical component aligned with the second end. - View Dependent Claims (17)
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Specification