Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PROJECTION UNIT FOR A HEAD-UP DISPLAY AND METHOD FOR OPERATING A PROJECTION UNIT FOR A HEAD-UP DISPLAY
Document Type and Number:
WIPO Patent Application WO/2011/066890
Kind Code:
A3
Abstract:
The projection unit comprises a lighting unit, an optical element arranged downstream of the lighting unit, and an imaging unit arranged downstream of the optical element, wherein a circular polarization filter and a linear polarization filter arranged downstream of the circular polarization filter are arranged in the beam path between the optical element and a light emitting area. The method is used to operate a project unit for a head-up display, wherein the head-up display comprises a lighting unit, an optical element arranged downstream of the lighting unit, and an imaging unit arranged downstream of the optical element, wherein sunlight entering the project unit is first linearly polarized in a first polarization direction by means of a first polarization means, the sunlight is then circularly polarized by means of a second polarization means, then partially reflected by the optical element, then linearly polarized in a second polarization direction by means of the second polarization means, wherein the first polarization direction and the second polarization direction are substantially perpendicular to each other and the reflected light linearly polarized in the second polarization direction is absorbed by means of the first polarization means.

More Like This:
JP7453292Half mirror film for displaying projected images, laminated glass for displaying projected images, and image display systems
JP5751440Vehicle head-up display device
JP2019008100IMAGE DISPLAY DEVICE, IMAGE DISPLAY METHOD, AND IMAGE DISPLAY PROGRAM
Inventors:
LINKE FELIX (DE)
WAGNER-GENTNER ARMIN (DE)
GUNNAR FRANZ (DE)
Application Number:
PCT/EP2010/006488
Publication Date:
October 13, 2011
Filing Date:
October 23, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
BAYERISCHE MOTOREN WERKE AG (DE)
LINKE FELIX (DE)
WAGNER-GENTNER ARMIN (DE)
GUNNAR FRANZ (DE)
International Classes:
G02B27/01
Domestic Patent References:
WO2000065844A12000-11-02
WO2003046326A22003-06-05
Foreign References:
US5859714A1999-01-12
USRE27356E1972-05-09
US5486840A1996-01-23
US6262841B12001-07-17
US20030147145A12003-08-07
US3544195A1970-12-01
Attorney, Agent or Firm:
BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT (München, DE)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: DISPLAY DEVICE, IN PARTICULAR FOR A MOTOR VEHICLE, AND DISPLAY METHOD

Next Patent: MULTI-FUNCTION AIRCRAFT TRACTOR