| 摘要 |
<p>A converter of natural white light into light of planar polarization has a divider (3) of said natural white light into two beams of mutually orthogonal polarization, each consisting essentially of planar polarized light of p-polarization or s-polarization; a rotator (6) for turning the plane of polarization of one of the two beams, and means (4, 5, 7) for combining the two emerging beams with the same polarization. According to the invention, the divider (3) consist of a stack of alternating parallel plates of two distinct optical media and refractive indices, the angle of incidence of the beam arriving from the natural white light source (1) being equal to or greater than the Brewster angle as determined by the refractive indices of the two optical media. The invention finds industrial applicability as a source of polarized light in video image projectors.</p> |
