Proximity and ambient light sensor with improved smudge rejection
AssigneeApple Inc.
InventorAchim Pantfoerder
Life of this patent
Estimating the term…
Loading patent…
AssigneeApple Inc.
InventorAchim Pantfoerder
Estimating the term…
An integrated proximity and ambient light sensor assembly includes an emitter of an IR proximity signal, and a detector configured to detect the IR proximity signal from the emitter when the apparatus is sensing proximity, and to detect ambient light when the apparatus is sensing ambient light. The assembly includes an IR cut filter that has a film disposed over the detector that rejects IR light but passes visible light to the detector, and an opening in the film centered over a midpoint of the detector that passes IR and visible light to the detector. The opening allows IR light to reach the detector from within a narrow angle, but absorbs undesirable emitted IR light that is reflected by oily build-up or “smudge” left on a cover of the device. The film allows visible light to pass for a wider angle to better determine average ambient light.
An apparatus sense proximity, and to sense ambient light, the apparatus comprising:
An electronic device comprising:
An electronic device comprising:
A method for manufacturing an electronic device, comprising:
Dependencies are inferred from the claim text.