发明名称 |
DIFFRACTIVE COMBINER FOR MULTICOLOUR AND MONOCHROME DISPLAY, PRODUCTION METHOD, AND HEAD-UP DISPLAY DEVICE USING SAME |
摘要 |
<p>A method for producing a single-layer diffractive combiner for a head-up display having a projection unit with n light sources of lambdai wavelength(s), where i=1 to n sending light towards the combiner at an angle thetap. The method includes forming interference fringes for each lambdai wavelength on a photosensitive layer with an interference of two light beams from a single laser source of wavelength lambdae, where the forming step is repeated n times, and each time the forming step is repeated an angle thetai between the two beams is determined according to thetai=arcsin ((lambdae/lambdai)*sin(thetap)), 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.</p> |
申请公布号 |
EP2376969(B1) |
申请公布日期 |
2014.03.19 |
申请号 |
EP20090768065 |
申请日期 |
2009.12.09 |
申请人 |
DELPHI TECHNOLOGIES, INC.;UNIVERSITE DE STRASBOURG |
发明人 |
MOUSSA, HASSAN;TUPINIER, LAURENT;EL HAFIDI, IDRISS;NDAO, MANDIAYE |
分类号 |
G02B5/32;G02B27/00;G02B27/01;G03H1/04 |
主分类号 |
G02B5/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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