公开(公告)号：US20220004077A1

公开(公告)日：2022-01-06

申请号：US16919561

申请日：2020-07-02

Applicant: Robert Bosch GmbH

Inventor： Zilun Gong ,  Ning Wang ,  Alexander Huebel ,  Tobias Graf

IPC: G02F1/313

Abstract: An optical switch includes a bus waveguide and an optical antenna supported by a substrate, a first and second coupling waveguide, a first and second actuation electrode, and a first and second reaction electrode. The first coupling waveguide is disposed parallel with the substrate and aligned with the bus waveguide. The first reaction electrode is coupled with, and adjacent to, the first coupling waveguide. The second coupling waveguide is optically connected with the first coupling waveguide and suspended over and configured to optically couple with the optical antenna. The second reaction electrode is coupled with, and adjacent to, the second coupling waveguide. The first and second actuation electrodes are supported by the substrate and configured to control the position of the first and second coupling waveguide, respectively, relative to the bus waveguide and optical antenna, via the first and second reaction electrodes.

公开(公告)号：US20190079224A1

公开(公告)日：2019-03-14

申请号：US16117489

申请日：2018-08-30

Applicant: Robert Bosch GmbH

Inventor： Reinhold Fiess ,  Tobias Graf

IPC: G02B5/18 ,  G01S17/93 ,  G01S7/481

Abstract: A diffractive optical element includes at least two diffractive structures situated next to one another, having differing functionalities, and being configured to, responsive to being irradiated independently of one another with incoherent laser light from beams of their respectively coupled laser sources, generate respective diffraction patterns that do not interfere with one another and that combine as an overall diffraction pattern in a far field. A method is provided for manufacturing such a diffractive optical element.

公开(公告)号：US20190041520A1

公开(公告)日：2019-02-07

申请号：US16055305

申请日：2018-08-06

Applicant: Robert Bosch GmbH

Inventor： Ingo Ramsteiner ,  Annette Frederiksen ,  Tobias Graf

IPC: G01S17/89 ,  G01S7/481

Abstract: A LIDAR system which includes a laser radiation source for generating coherent laser radiation, the LIDAR system being designed for emitting the laser radiation emitted by the LIDAR system essentially in propagation modes which correspond to analytical solutions of the paraxial Helmholtz equation including two ordinal numbers, at least one of the two ordinal numbers being greater than 0.

公开(公告)号：US11440136B2

公开(公告)日：2022-09-13

申请号：US16491371

申请日：2018-03-02

Applicant: Robert Bosch GmbH

Inventor： Roland Gauch ,  Dmitriy Mikhaylov ,  Tobias Graf

IPC: B23K26/06 ,  B23K26/067 ,  B23K26/0622 ,  B23K26/064 ,  B23K26/073 ,  G02B27/09 ,  G02B27/28 ,  G02B27/48

Abstract: A method and a laser assemblage are described for material processing, such that in a laser assemblage, a laser beam is focused onto a processing/imaging plane and the laser beam can be adapted in terms of its intensity distribution by way of at least one beam shaper. Provision is made in this context that in order to avoid uniformity defects in the processing/imaging plane, the laser beam is split by way of at least one beam splitter into at least two partial or individual beams, and the partial or individual beams are differently influenced, or each partial or individual beam is constituted from a laser source having a different wavelength, in such a way that after they are combined and focused onto the processing/imaging plane they form an output beam having an intensity profile, adjacent intensity maxima of the intensity profile differing in terms of their light properties. It is thereby possible to prevent the occurrence of obtrusive interference so that obtrusive speckle patterns are largely eliminated, with the result that beam shaping quality, in particular for laser processing processes, can be considerably improved.

公开(公告)号：US11143801B2

公开(公告)日：2021-10-12

申请号：US16117489

申请日：2018-08-30

Applicant: Robert Bosch GmbH

Inventor： Reinhold Fiess ,  Tobias Graf

IPC: G01C3/08 ,  G02B5/18 ,  G01S17/931 ,  G01S17/88 ,  G01S7/481

Abstract: A diffractive optical element includes at least two diffractive structures situated next to one another, having differing functionalities, and being configured to, responsive to being irradiated independently of one another with incoherent laser light from beams of their respectively coupled laser sources, generate respective diffraction patterns that do not interfere with one another and that combine as an overall diffraction pattern in a far field. A method is provided for manufacturing such a diffractive optical element.

公开(公告)号：US11487126B2

公开(公告)日：2022-11-01

申请号：US16626453

申请日：2018-06-21

Applicant: Robert Bosch GmbH

Inventor： Andreas Petersen ,  Tobias Graf

IPC: G02B27/01 ,  G02B26/10

Abstract: A method for calibrating a projection device for a head-mounted display includes scanning a light beam emitted by a light source over a scanning angle range by means of a reflection element such that the light beam deflected by the reflection element passes over a head-mounted display surface region of a deflection element arranged on a lens of the head-mounted display. The surface region has at least two adjustment markings arranged on the head-mounted display, each adjustment marking arranged at a specified position relative to the surface of the deflection element arranged on a lens of the head-mounted display. The method further includes determining in which scan setting of the reflection element the at least two adjustment markings are struck by the light beam.

公开(公告)号：US11425346B2

公开(公告)日：2022-08-23

申请号：US17285282

申请日：2019-10-04

Applicant: Robert Bosch GmbH

Inventor： Alexander Huebel ,  Tobias Graf

IPC: H04N9/31

Abstract: The disclosure relates to a device for providing a multi-colored light beam for a projector. The device comprises a first light source, a second light source, a waveguide element, a beam forming device and a structure element. The waveguide element forms a first waveguide for guiding light from the first light source, a second waveguide for guiding light from the second light source and a coupling out region for coupling light out of the first waveguide and the second waveguide. The beam forming device is designed to form the multi-colored light beam using the light coupled out of the coupling out region. The first light source, the second light source, the waveguide element and the beam forming device are arranged on the structure element.

公开(公告)号：US20200218075A1

公开(公告)日：2020-07-09

申请号：US16626453

申请日：2018-06-21

Applicant: Robert Bosch GmbH

Inventor： Andreas Petersen ,  Tobias Graf

IPC: G02B27/01 ,  G02B26/10

Abstract: A method for calibrating a projection device for a head-mounted display includes scanning a light beam emitted by a light source over a scanning angle range by means of a reflection element such that the light beam deflected by the reflection element passes over a head-mounted display surface region of a deflection element arranged on a lens of the head-mounted display. The surface region has at least two adjustment markings arranged on the head-mounted display, each adjustment marking arranged at a specified position relative to the surface of the deflection element arranged on a lens of the head-mounted display. The method further includes determining in which scan setting of the reflection element the at least two adjustment markings are struck by the light beam.

公开(公告)号：US20230273457A1

公开(公告)日：2023-08-31

申请号：US18006610

申请日：2021-09-22

Applicant: Robert Bosch GmbH

Inventor： Tobias Graf

IPC: G02C7/02

CPC classification number: G02C7/022

Abstract: An ophthalmic lens for eyeglasses. The lens has an eye side, a surroundings side, a waveguide, a first compensation layer, a second compensation layer, a first outer layer, and a second outer layer. The waveguide is formed to conduct and couple out projection light in the direction of the eye side, in order to display a virtual object. The first compensation layer has a first refractive power, the second compensation layer has a second refractive power, the first outer layer has a third refractive power, and the second outer layer has a fourth refractive power.

公开(公告)号：US20230090419A1

公开(公告)日：2023-03-23

申请号：US17897029

申请日：2022-08-26

Applicant: Robert Bosch GmbH

Inventor： Tobias Graf ,  Reinhold Fiess ,  Simone Hoeckh

IPC: G03H1/04

Abstract: An apparatus and method for recording a holographic optical element. The apparatus includes a first recording unit configured to provide a first wave front for recording the holographic optical element, a second recording unit configured to provide a second wave front for recording the holographic optical element, and (i) a deformable phase plate configured to perform wave front modulation of the first wave front when the holographic optical element is recorded, or (ii) a plurality of deformable phase plates, at least one deformable phase plate (of the plurality of deformable phase plates can be configured to perform wave front modulation of the first wave front when the holographic optical element is recorded.