公开(公告)号：US20250010716A1

公开(公告)日：2025-01-09

申请号：US18891150

申请日：2024-09-20

Applicant: HELLA GmbH & Co. KGaA ,  AUDI AG ,  Carl Zeiss Jena GmbH

Inventor： Martin Mügge ,  Johannes Scheuchenpflug ,  Christoph Erler ,  Carsten Hohmann ,  Alfons Michaelis ,  Siemen Kuehl ,  Petr Vojtisek

IPC: B60K35/21 ,  B60K35/50

Abstract: A display device for the interior of a vehicle comprises light sources, light guides, and holograms. The light guides are arranged next to one another and each has an entrance surface and a reflective area. Each light source emanates light that enters the entrance surface of an associated light. At least one of the holograms is arranged at or in each light guide. The light emanated by each light source enters the entrance surface of the associated light guide in a direction of the reflective area of the associated light guide, is reflected by the reflective area of the associated light guide in a direction of the hologram of the associated light guide, and interacts with the hologram of the associated light guide.

公开(公告)号：US20230418059A1

公开(公告)日：2023-12-28

申请号：US18244283

申请日：2023-09-10

Applicant: Carl Zeiss Jena GmbH

Inventor： Yi Zhong ,  Marc Junghans ,  Daniel Thomae ,  Roman Kleindienst ,  Siemen Kuehl ,  Christoph Erler

IPC: G02B27/01

CPC classification number: G02B27/0103 ,  G02B2027/0105 ,  G02B2027/011 ,  G02B2027/0112

Abstract: A wavefront manipulator for an arrangement in the beam path of a head-up display between a picture generating unit and a projection surface is provided. The wavefront manipulator includes a holographic arrangement including at least two holographic elements. The at least two holographic elements are arranged directly behind one another in the beam path and are configured to be reflective for at least one defined wavelength and a defined angle of incidence range.

公开(公告)号：US20250013136A1

公开(公告)日：2025-01-09

申请号：US18712670

申请日：2022-11-23

Applicant: Carl Zeiss Jena GmbH

Inventor： Adrian Grewe ,  Marc Junghans ,  Roman Kleindienst ,  Siemen Kuehl ,  Christoph Erler

IPC: G03B21/14 ,  G02B27/48 ,  G03B21/20

Abstract: The invention preferably relates to an image-generating unit with a light source for generating illumination radiation and a light-modulating pixel array for generating an image by pixel-wise modulation of the illumination radiation incident on the pixel array. The image-generating unit is characterized in that the illumination radiation, upon incidence on the light-modulating pixel array, has a lateral extent which is smaller than the pixel array and is guided over the pixel array by means of a scanning unit for generating an image. By a combination of the process of scanning the illumination radiation over the light-modulating pixel array, the speckle signatures of the scanning unit and of the pixel array are superimposed or combined to generate an image point. Advantageously, visible speckle patterns in the resulting image can thus be significantly reduced.