Laser device with adjustable polarization
First Claim
1. A device comprising:
- a detector,wherein the detector is arranged to detect different polarizations of laser light,wherein the detector comprises a camera chip and a polarization filter;
an array of laser emitters, the array comprising at least a first sub array of laser emitters and a second sub array of laser emitters; and
a control circuit,wherein the first sub array emits a first laser light of a first polarization,wherein the second sub array emits a second laser light of a second polarization,wherein the second polarization is different from the first polarization,wherein the control circuit is arranged to change the first polarization and the second polarization,wherein the control circuit is arranged to control the first sub array and/or the second sub array independently,wherein the first laser light is not coherent to the second laser light,wherein the control circuit is arranged to control the coherence of the first laser light and the second laser light.
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Accused Products
Abstract
The invention describes a laser device (10) comprising an array (50) of laser emitters (100) and a control unit (200), the array (50) comprises at least a first sub array (110) of laser emitters and a second sub array (120) of laser emitters, wherein the first sub array (110) emits laser light of a first polarization and the second sub array (120) emits laser light of a second polarization being different from the first polarization, and wherein the control unit (200) is adapted to control the first sub array (110) and the second sub array (120) such that the polarization of the laser light emitted by the array (50) can be changed. The invention further describes a sensor device (300) and an optical detection system (400) comprising such a laser device (10). Furthermore, a method of determining the shape of an object by means of the optical detection system (400) is described.
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Citations
20 Claims
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1. A device comprising:
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a detector, wherein the detector is arranged to detect different polarizations of laser light, wherein the detector comprises a camera chip and a polarization filter; an array of laser emitters, the array comprising at least a first sub array of laser emitters and a second sub array of laser emitters; and a control circuit, wherein the first sub array emits a first laser light of a first polarization, wherein the second sub array emits a second laser light of a second polarization, wherein the second polarization is different from the first polarization, wherein the control circuit is arranged to change the first polarization and the second polarization, wherein the control circuit is arranged to control the first sub array and/or the second sub array independently, wherein the first laser light is not coherent to the second laser light, wherein the control circuit is arranged to control the coherence of the first laser light and the second laser light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13)
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11. A method of determining a shape of an object comprising:
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emitting a pattern of laser light, the pattern of laser light comprising at least a first sub pattern and a second sub pattern of laser light, wherein the first sub patterns has a first polarization, wherein the second sub pattern has a second polarization; controlling a coherence of laser light by means of independently controlling subsets of laser emitters of a first sub array and/or a second sub array, wherein at least the laser light emitted by a first subset is not coherent to laser light emitted by a second subset; receiving laser light of the pattern of laser light reflected by an object; and determining the shape of the object using the received laser light of the first and the second sub pattern.
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14. An optical detection device comprising:
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a detector, the detector comprising a camera chip and a polarization filter, wherein the detector is arranged to detect different polarizations of laser light; a first sub array of laser emitters; a second sub array of laser emitters; and a control circuit, wherein the first sub array emits a first laser light, the first laser light having a first polarization, wherein the second sub array emits a second laser light, the second laser light having a second polarization, wherein the second polarization is different from the first polarization, wherein the control circuit is arranged to change the first polarization and the second polarization, wherein the first laser light is not coherent to the second laser light, wherein the control circuit is arranged to control the coherence of the first laser light and the second laser light. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification