Invention Grant
US08477424B2 Diffractive combiner for multicolor and monochrome display, method of manufacture and head-up display device using same
有权
用于多色和单色显示的衍射组合器，制造方法和使用其的平视显示装置
- Patent Title: Diffractive combiner for multicolor and monochrome display, method of manufacture and head-up display device using same
- Patent Title (中): 用于多色和单色显示的衍射组合器，制造方法和使用其的平视显示装置
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Application No.: US13133597Application Date: 2009-12-09
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Publication No.: US08477424B2Publication Date: 2013-07-02
- Inventor: Hassan Moussa , Laurent Tupinier , Idriss El Hafidi , Mandiaye Ndao
- Applicant: Hassan Moussa , Laurent Tupinier , Idriss El Hafidi , Mandiaye Ndao
- Applicant Address: US MI Troy
- Assignee: Delphi Technologies, Inc.,Universite Louis Pasteur
- Current Assignee: Delphi Technologies, Inc.,Universite Louis Pasteur
- Current Assignee Address: US MI Troy
- Agent Lawrence D. Hazelton
- Priority: EP08171134 20081209; EP08171219 20081210
- International Application: PCT/EP2009/066776 WO 20091209
- International Announcement: WO2010/066818 WO 20100617
- Main IPC: G02B27/14
- IPC: G02B27/14
Abstract:
A method for producing a single-layer diffractive combiner for a head-up display having a projection unit with n light sources of λi wavelength(s), where i=1 to n sending light towards the combiner at an angle θp. The method includes forming interference fringes for each λi wavelength on a photosensitive layer with an interference of two light beams from a single laser source of wavelength λe, where the forming step is repeated n times, and each time the forming step is repeated an angle θi between the two beams is determined according to θi=arcsin ((λe/λi)*sin(θp)), one of the interfering beams being divergent and having a spherical wave front and the other being a plane wave, the interference of the beams generating a diffractive network with an adjustable pitch and curved contour fringe lines.
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