Patent ID: 7101054
Filing Date: 2006-09-05
Classification: F21S,G02B

Abstract:
1. A light emitting apparatus comprising; a light source for emitting non-polarized light, a parabolic mirror for making non-polarized light emitted from the light-source into parallel light beams, a reflecting section disposed on outer circumferential portions of the first and second polarized light splitting sections for reflecting the s polarized light reflected by the first and second polarized light splitting sections in the same direction as the p polarized light, the s polarized light reflected by the polarized light splitting sections being reflected to the outer circumferential portions of the polarized light splitting sections, and a conversion section for converting by 90° an electric field vibration plane of said p polarized light, wherein p polarized light split by the first and second polarized light splitting sections is transmitted in the same direction as the non-polarized light and is thereafter converted to second vertical polarized light by the conversion section, and s polarized light split by the first and second polarized light splitting sections is emitted as first vertical polarized light which is reflected and is thereafter emitted in the same direction as the p polarized light by the reflecting section, and wherein one of the s polarized light and the p polarized light which are split by the first and second polarized light splitting sections is emitted as first vertical polarized light having a vibration plane in an electric field which is substantially normal to the ground, and the other of the p polarized light and the s polarized light is converted as second vertical polarized light having a vibration plane in an electric field which is substantially normal to the ground by said conversion section.