Back to results
US 2014/0152989 A1Published application
Selectivity by polarization
AssigneeInfineon Technologies AG
InventorFranz DARRER
Life of this patent
Estimating the term…
Abstract
Representative implementations of devices and techniques provide selectivity for imaging devices and systems. Polarization may be applied to emitted light radiation and/or received light radiation to select a desired imaging result. Using polarization, an imaging device or system can pass desired light radiation having desired information and reject unwanted or stray light radiation.
Claims26
An apparatus, comprising:
- an emitter arranged to emit light radiation, illuminating at least a portion of a preselected area;
- a first polarizer associated with the emitter and arranged to polarize the light radiation in a first polarization;
- an image sensor arranged to detect an object within the preselected area based on receiving a reflection of the light radiation;
- and
- a second polarizer associated with the image sensor and arranged to pass light radiation having the first polarization and to attenuate light radiation not having the first polarization.
2 more elements
A system, comprising:
- an illumination module arranged to emit light radiation, illuminating at least a portion of a preselected area;
- a first adjustable polarizer associated with the illumination module and arranged to selectively polarize the light radiation in a first polarization;
- a sensor module arranged to receive a reflection of the light radiation and to detect an object within the preselected area based on receiving the reflection;
- and
- a second adjustable polarizer associated with the sensor module and arranged to selectively pass the reflection of the light radiation and to selectively attenuate another light radiation.
2 more elements
A method, comprising:
- emitting polarized light radiation to illuminate a preselected area, the polarized light radiation having a first polarization;
- receiving a reflection of the polarized light radiation having the first polarization;
- detecting an object within the preselected area based on the reflection received;
- and
- rejecting another light radiation not having the first polarization.
2 more elements
A system, comprising:
- a plurality of imaging devices, each imaging device of the plurality of imaging devices including:
- a polarized emitter arranged to emit light radiation having a first polarization, illuminating at least a portion of a preselected area;
- and
- a polarized image sensor arranged to receive a reflection of the light radiation having the first polarization and to reject light radiation having another polarization than the first polarization, and to detect an object within the preselected area based on receiving the reflection of the light radiation having the first polarization.
1 more element
Dependencies are inferred from the claim text.