公开(公告)号：US20230090984A1

公开(公告)日：2023-03-23

申请号：US17898705

申请日：2022-08-30

申请人： Robert Bosch GmbH

发明人： Tobias Wilm ,  Johannes Hofmann ,  Reinhold Fiess

IPC分类号： G03H1/04

摘要： A method for producing a holographic optical element. The method includes a step of exposing a recording material to a phase pattern which is provided by a first modulated light beam with a first phase portion. Furthermore, the method includes a step of an additional exposure of the recording material to the phase pattern, which is provided by a second modulated light beam with a second phase portion, wherein the second phase portion has a phase offset with respect to the first phase portion in order to produce a holographic optical element.

公开(公告)号：US20240192500A1

公开(公告)日：2024-06-13

申请号：US18552706

申请日：2022-05-23

申请人： Robert Bosch GmbH

发明人： Nikolai Suchkov ,  Andreas Petersen ,  Anna-Katharina Friedel ,  Hendrik Specht ,  Johannes Hofmann ,  Mazyar Sabbar ,  Tadiyos Alemayehu

IPC分类号： G02B27/01 ,  G02B5/30 ,  G02B26/10 ,  G02B27/00 ,  G09G3/00

CPC分类号： G02B27/0172 ,  G02B5/30 ,  G02B26/101 ,  G02B27/0093 ,  G09G3/002 ,  G02B2027/0174 ,  G02B2027/0178

摘要： An optical system for a virtual retinal display. The optical system includes: an image source providing image content as image data; an image processing device for the image data; a projector unit generating at least one light beam and including a drivable deflection device for the at least one light beam for scanning projection of the image content; a first deflection unit onto which the image content is projectable and configured to direct the projected image content onto a user's eye; a second deflection unit arranged between the projector unit and first deflection unit configured to deflect the light beam via a first imaging path at a first point in time and via a second imaging path at a second point in time subsequent to the first point in time onto at least one projection region of the first deflection unit; and an optical replication component.

公开(公告)号：US20220269088A1

公开(公告)日：2022-08-25

申请号：US17672909

申请日：2022-02-16

申请人： Robert Bosch GmbH

发明人： Andrea Marchini ,  Andreas Petersen ,  Christian Nitschke ,  Eva Lea Elisabeth Empting ,  Gael Pilard ,  Hendrik Specht ,  Joerg Carls ,  Johannes Hofmann ,  Maximilian Busch ,  Sebastian Reiss ,  Simon Pick ,  Tadiyos Alemayehu ,  Thomas Kuenstle

IPC分类号： G02B27/01 ,  G02B27/00

摘要： An optical system for a virtual retinal scan display. The optical system includes an image source which supplies image data, an image processing device for the image data, a projector unit having a light source modulatable in time for generating a light beam, and an actuable refraction device for the light beam for the scanning projection of the image content, a deflection unit onto which the image content is able to be projected and which is designed to guide the projected image content onto an eye of a user, and an adaptive optical element for modifying a beam divergence, which is situated in the optical path between the light source and the deflection unit. The adaptive optical element is able to be actuated so that the beam divergence of the light beam is variable as a function of the angle of incidence of the light beam on the deflection unit.

公开(公告)号：US20240019710A1

公开(公告)日：2024-01-18

申请号：US18255531

申请日：2021-10-18

申请人： Robert Bosch GmbH

发明人： Andrea Marchini ,  Andreas Petersen ,  Christian Nitschke ,  Eva Lea Elisabeth Empting ,  Gael Pilard ,  Hendrik Specht ,  Joerg Carls ,  Johannes Hofmann ,  Maximilian Busch ,  Sebastian Reiss ,  Simon Pick ,  Tadiyos Alemayehu ,  Thomas Kuenstle

IPC分类号： G02B27/18 ,  G02B27/01 ,  G02B27/00

CPC分类号： G02B27/18 ,  G02B27/0172 ,  G02B27/0093 ,  G02B27/0025 ,  G02B2027/0178

摘要： An optical system for a virtual retinal scan display. The system includes: an image source providing image content as image data; an image-processing device; a projector unit for generating at least one light beam, and having a controllable deflecting device for the at least one light beam for the scanning projection of the image content; a diverting unit, onto which the image content is projected, equipped to direct the projected image content onto an eye of a user; an optical segmentation element using which the image content is projectable via different imaging paths onto at least one projection region of the diverting unit, at least individual imaging paths being controllable individually; and an optical replication component equipped to direct the projected image content, replicated and spatially offset, onto the eye of the user, so that a plurality of mutually spatially offset exit pupils having the image content is produced.

公开(公告)号：US20230118706A1

公开(公告)日：2023-04-20

申请号：US17935892

申请日：2022-09-27

申请人： Robert Bosch GmbH

发明人： Johannes Meyer ,  Johannes Hofmann ,  Tobias Wilm

IPC分类号： H01S5/183 ,  H01S5/42 ,  G03H1/04

摘要： A method for producing micro-optics on surface-emitting laser diodes. In a wafer-level operation, the micro-optics are preferably positioned directly on the VCSEL's forming, in each instance, a part of a coherent wafer.

公开(公告)号：US20220404768A1

公开(公告)日：2022-12-22

申请号：US17776049

申请日：2020-11-05

申请人： Robert Bosch GmbH

发明人： Johannes Hofmann ,  Reinhold Fiess

IPC分类号： G03H1/02 ,  G02B26/08

摘要： A device and a method for manufacturing holographic optical elements. The device includes at least two partial light beams and one interference light beam, one deformable mirror in each case per partial light beam, a control unit, which is configured to actuate the deformable mirrors to adapt a wavefront of the partial light beam, and a holographic film. The deformable mirrors are situated so as to each reflect precisely one partial light beam and to direct the reflected partial light beam on the holographic film, and the interference light beam being directed on the holographic film to interfere with the reflected partial light beams so as to simultaneously generate at least two holographic optical elements.