LIGHT BELT AND PROJECTOR USING THE SAME

• Main Author: LEE, EUNG SANG
• Format: Patent
• Language: English; Korean
• Published: 14.11.2002
• Edition: 7
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

PURPOSE: A light belt and a projector using the light belt are provided to simplify the structure of the light belt and improve light utilization efficiency and to produce a projector using a reduction color mixture. CONSTITUTION: A light belt(30) is placed in front of a light source(51) to form a color image. The light belt includes four liquid crystal display devices(31,32,33,34) that are laminated, a color polarizer(42,43,44) located between neighboring liquid crystal display devices, and a neutral polarizer(41,41'). The polarizing axes of the polarizers are parallel. A projector includes a light source, a light belt that is located in front of the light source to form a color image according to a reduction color mixture, and a projection lens(53) set in front of the light belt. A reflection plate(52) is placed behind the light source. 본 발명은 액정 라이트 밸브와 이를 이용한 투사장치를 개시한다. 본 발명은 광원과, 이 광원의 전면에 설치되며 감법혼색법에 의해 칼라 화상을 형성하는 라이트 밸브와, 이 라이트 밸브의 전면에 설치되는 투사렌즈군을 구비하여 된 것에 그 특징이 있으며, 이는 투사장치의 박형화 및 소형화가 가능하고 광이용효율을 향상시킬 수 있는 이점을 가진다.