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US 2013/0153755 A1Published application
Optical Proximity Sensing
AssigneeNokia Corporation
InventorsKalle Eino Olavi Pikkujamsa, Ralf Wieser
Life of this patent
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Abstract
An optical proximity sensor module including a housing; an integrated light emitter configured to emit light; a diffractive optical element positioned in front of the light emitter and configured to direct light emitted by the light emitter towards a target volume in front of the diffractive optical element; and an integrated light detector configured to detect light reflected from a proximal object at the target volume.
Claims21
1-33. (canceled)
An optical proximity sensor system comprising:
- a light emitter configured to emit light;
- a diffractive optical element positioned in front of the light emitter and configured to direct light emitted by the light emitter towards a target volume in front of the diffractive optical element;
- and
- a light detector configured to detect light reflected from a proximal object at the target volume, and
- wherein the optical proximity sensor system is configured to direct light emitted by the light emitter through an apparatus housing comprising at least one aperture and the target volume in front of the diffractive optical element is located in front of the aperture at an exterior of the apparatus housing.
2 more elements
Dependencies are inferred from the claim text.