公开(公告)号：US11936161B2

公开(公告)日：2024-03-19

申请号：US17358127

申请日：2021-06-25

Applicant: LAP GmbH Laser Applikationen

Inventor： Hans-Peter Werner ,  Matthias Lange ,  Tze Keong Chow

IPC: H01S5/0683 ,  G02B27/28 ,  H01S5/02255 ,  H01S5/02315 ,  H01S5/042 ,  H01S5/40

CPC classification number: H01S5/0683 ,  G02B27/283 ,  H01S5/02255 ,  H01S5/02315 ,  H01S5/0428 ,  H01S5/4012

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.

公开(公告)号：US20210408763A1

公开(公告)日：2021-12-30

申请号：US17358127

申请日：2021-06-25

Applicant: LAP GmbH Laser Applikationen

Inventor： Hans-Peter Werner ,  Matthias Lange ,  Tze Keong Chow

IPC: H01S5/0683 ,  G02B27/28 ,  H01S5/042 ,  H01S5/40 ,  H01S5/02255 ,  H01S5/02315

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.