Invention Grant
- Patent Title: Laser projector with two laser diodes
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Application No.: US17358127Application Date: 2021-06-25
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Publication No.: US11936161B2Publication Date: 2024-03-19
- Inventor: Hans-Peter Werner , Matthias Lange , Tze Keong Chow
- Applicant: LAP GmbH Laser Applikationen
- Applicant Address: DE Lüneburg
- Assignee: LAP GmbH Laser Applikationen
- Current Assignee: LAP GmbH Laser Applikationen
- Current Assignee Address: DE Lüneburg
- Agency: Barclay Damon LLP
- Priority: DE 2020116897 2020.06.26
- Main IPC: H01S5/0683
- IPC: H01S5/0683 ; G02B27/28 ; H01S5/02255 ; H01S5/02315 ; H01S5/042 ; H01S5/40

Abstract:
A device for laser projection comprises a first laser diode configured to emit a first linearly polarized laser beam extending along a first polarization axis and a second laser diode configured to emit a second linearly polarized laser beam extending along a second polarization axis that is perpendicular to the first polarization axis. A polarization combiner is configured to combine the first and second linearly polarizing laser beams into a combined laser beam, wherein the combined laser beam comprises one of: (1) circular polarization; and (2) elliptical polarization. A measuring device is configured to measure an intensity of the combined laser beam. A control unit is configured to receive the measured intensity of the combined laser beam and is further configured to adjust an intensity of at least one of: (1) the first laser diode; and (2) the second laser diode.
Public/Granted literature
- US20210408763A1 LASER PROJECTOR WITH TWO LASER DIODES Public/Granted day:2021-12-30
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