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公开(公告)号：US20230314791A1
公开(公告)日：2023-10-05
申请号：US17711780
申请日：2022-04-01
Applicant: STMicroelectronics International N.V.
Inventor： Nenad NESTOROVIC , Jack SCHMIDT
CPC classification number: G02B26/0841 , G02B27/0955 , G01S7/4815 , G01S7/4817 , G02B26/10
Abstract: Disclosed herein is an efficient optical scanning system takes the output of a multi-laser bar emitter with high divergence and delivers a combined beam of long vertical stripes of optical power that have a nearly top hat distribution along a vertical scanning axis and a narrow width along a horizontal scanning axis. This line footprint of the combined beam is scanned by a mirror onto a scene for use as ranging light in a distance measurement system.
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公开(公告)号：US20230296868A1
公开(公告)日：2023-09-21
申请号：US17699958
申请日：2022-03-21
Applicant: STMicroelectronics International N.V.
Inventor： Nenad NESTOROVIC
CPC classification number: G02B17/0657 , G02B26/101 , G02B26/0833 , G02B27/0172 , G02B6/4215 , G02B17/023 , G01S7/4817 , G02B2027/011
Abstract: An optical module includes a fast-axis mirror that scans a laser beam along a fast-axis, a magnification mirror set formed by three discrete mirrors shaped to magnify the laser beam as it is scanned along the fast-axis and reflect the laser beam after magnification toward a slow-axis mirror that scans the laser beam along the slow-axis, and an Offner mirror relay that receives the laser beam as it is scanned along the slow-axis and reflects the laser beam out an exit aperture. The laser beam as output from the exit aperture is received at an input diffractive grating of a diffractive waveguide, with a user's eye being positioned adjacent an output diffractive grating of the waveguide such that the user's eye views ambient light entering the waveguide from objects within the user's field of view as well as light from the laser beam as it exits the output diffractive grating.
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