公开(公告)号：WO2016034247A1

公开(公告)日：2016-03-10

申请号：PCT/EP2014/068947

申请日：2014-09-05

Applicant: LEMOPTIX SA

Inventor： MASSON, Jonathan ,  MARCHAL, Dominique

IPC: G02B26/10 ,  G02B27/14 ,  G02B27/48 ,  H04N9/31 ,  G02B27/01

CPC classification number: G02B27/48 ,  G02B3/0006 ,  G02B5/288 ,  G02B26/0833 ,  G02B26/101 ,  G02B27/0101 ,  G02B27/142 ,  G02B2027/011 ,  G02B2027/0118 ,  G02B2207/117 ,  G03B21/602 ,  H04N9/3129

Abstract: An image projector (2, 2b, 2c) comprising, a light source (4) for providing a light beam (5); a MEMS mirror (6) which is arranged such that it can receive the light beam (5), and which can oscillate about at least one oscillation axis (7a, b) to scan said light beam (5); one or more multiple-beam-generators (8, 80, 41, 61, 62) each of the one or more multiple-beam-generators comprising, a planar beam splitter (9) which is arranged to receive the light beam (5) reflected by the MEMS mirror (6), and a planar reflector (10) which can receive the part of the light beam (5) which is transmitted through the planar beam splitter (9), so that each of the one or more multiple-beam-generators (8, 80, 41 ) can generated multiple beams (15a-c), and wherein the planar beam splitter (9) and planar reflector (10) are arranged to be in parallel; and a focusing lens (11) which is arranged to receive multiple beams (15a-c) which are generated by the one or more multiple-beam-generators (8, 80, 41, 61,62); wherein, in each of the one or more multiple-beam-generators (8, 80, 41, 61,62), the distance (h) between the planar beam splitter (9) and planar reflector (10) is such that the optical distance (OD) between the planar beam splitter (9) and planar reflector (10) is greater than, or equal to, half the coherent length of the light beam (5). There is further provided an optical assembly (1, 20, 30, 40, 60) comprising such an image projector.

Abstract translation: 一种图像投影仪（2,2b，2c），包括：用于提供光束（5）的光源（4）; MEMS反射镜（6），其布置成使得其可以接收光束（5），并且可以围绕至少一个振荡轴（7a，b）摆动以扫描所述光束（5）; 每个一个或多个多光束发生器中的一个或多个多光束发生器（8,80,41,61,62）包括：布置成接收光束（5）的平面分束器（9） 由MEMS反射镜（6）反射，以及平面反射器（10），其可以接收通过平面分束器（9）传输的光束（5）的一部分，使得一个或多个多 光束发生器（8,80,41）可以产生多个光束（15a-c），并且其中平面分束器（9）和平面反射器（10）被布置成平行; 以及聚焦透镜（11），被配置为接收由所述一个或多个多光束发生器（8,80,41,61,62）产生的多个光束（15a-c）; 其中，在所述一个或多个多光束发生器（8,80,41,61,62）的每一个中，所述平面光束分离器（9）和所述平面反射器（10）之间的距离（h）使得所述光学 平面分束器（9）和平面反射器（10）之间的距离（OD）大于或等于光束（5）的相干长度的一半。 还提供了包括这种图像投影仪的光学组件（1,20,30,40,60）。