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公开(公告)号:EP2584305A1
公开(公告)日:2013-04-24
申请号:EP11795438.8
申请日:2011-02-25
CPC分类号: G02B27/145 , G01B9/02 , G01B9/02051 , G01B9/02056 , G01B2290/70 , G02B5/04 , G02B27/283
摘要: An optical element (20) is formed by bonding the faces of first to fourth triangular prisms (21, 22, 23, 24) that form the apex angle, wherein bonding faces (21a, 22b) of the first and second triangular prisms, bonding faces (22a, 23b) of the second and third triangular prisms, bonding faces (23a, 24b) of the third and fourth triangular prisms, and bonding faces (24a, 21b) of the fourth and first triangular prisms are respectively bonded through an optical thin film. Each optical thin film allows the incident light to pass through, or reflects the incident light, depending on the polarization state. The optical element (20) splits an optical path at a first position of the optical thin film, and combines optical paths at a second position of the optical thin film.
摘要翻译: 光学元件(20)通过将形成顶角的第一至第四三角棱镜(21,22,23,24)的面接合而形成,其中,第一和第二三角形棱镜的接合面(21a,22b) 第三和第三三角棱镜的表面(22a,23b),第三和第四三角棱镜的接合面(23a,24b)和第四和第三三角形棱镜的接合面(24a,21b)分别通过光学 薄膜。 每个光学薄膜允许入射光根据偏振状态通过或反射入射光。 光学元件(20)在光学薄膜的第一位置处分割光路,并且在光学薄膜的第二位置处组合光路。