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US 11,536,815 B2Granted
Optoelectronic modules operable to recognize spurious reflections and to compensate for errors caused by spurious reflections
Assigneeams Sensors Singapore Pte. Ltd.
InventorsJens Kubacki, Jim Lewis, Miguel Bruno Vaello Paños, Michael Lehmann, Stephan Beer, Bernhard Buettgen, Daniel Pérez Calero, Bassam Hallal
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Abstract
An optoelectronic module including a light emitter to generate light to be emitted from the module, a plurality of spatially distributed light sensitive elements arranged to detect light from the emitter that is reflected by an object outside the module, and one or more dedicated spurious-reflection detection pixels.
Claims10
An optoelectronic module comprising:
- a light emission chamber and a light detection chamber;
- a first passive optical element disposed over the light emission chamber and a second passive optical element disposed over the light detection chamber;
- a light emitter in the light emission chamber operable to emit light toward the first passive optical element;
- a plurality of demodulation pixels in the light detection chamber arranged to detect light from the emitter that is reflected by an object outside the module;
- one or more spurious-reflection detection pixels in the light detection chamber;
- and
- one or more light absorbing regions in or on the second passive optical element for defining a narrow straight path from a predefined area on a surface of a transmissive cover of a host device to the one or more spurious-reflection detection pixels, wherein the one or more light absorbing regions are substantially non-transparent to light at a wavelength emitted by the light emitter.
4 more elements
An optoelectronic module comprising:
- a light emission chamber and a light detection chamber;
- a first passive optical element disposed over the light emission chamber and a second passive optical element disposed over the light detection chamber;
- a light emitter in the light emission chamber operable to emit light toward the first passive optical element;
- a plurality of demodulation pixels in the light detection chamber arranged to detect light from the emitter that is reflected by an object outside the module;
- one or more spurious-reflection detection pixels in the light detection chamber;
- and
- one or more light absorbing regions in or on the second passive optical element arranged to block emitter light reflected from one or more pre-defined areas of a transmissive cover of a host device from reaching the demodulation pixels.
4 more elements
Dependencies are inferred from the claim text.