| 摘要 |
<p>A prism polarizer comprising a pair of anisotropic crystal prisms which are faced to each other. Each of said crystal prisms is composed of an crystal which has an optical characteristic that the difference between the square of the refractive index for extraordinary rays and the square of the refractive index for ordinary rays is larger than 1. The angle of incidence of a beam upon the facing plane of said pair of prisms is equal to the Brewster angle for the refractive index for P-polarization rays. P-polarization rays are transmitted through said facing plane. S-polarization rays are totally reflected at said facing plane. Thereby, said incident beam is separated into two polarized beams. Each of said pair of prisms is formed so that each polarized beam is totally reflected within each prism and that the separated outlet beams from said pair of prisms are parallel with each otter.</p> |
