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JPH112780A Expired / Lapsed JP ⏱️ 0.0 years remaining

Reflective projector

Assignee: Samsung Electronics Co Ltd
•
Filing: 1998-04-03
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Granted: —
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Expires: 2018-04-03
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Abstract

Abstract Translated from Japanese (57)【要約】 (修正有) 【課題】 臨界角プリズムを採用して光の進行経路を変 換させうるようにし、スクリーンの明るさを大幅向上さ せえ、また、偏光による光経路変換時、光の入射角に敏 感な偏光ビームスプリッタの使用を不要とすることによ って光学的整列が容易になる反射型プロジェクターを提 供する。 【解決手段】 光を生成投射する光源110と、各々独 立的に駆動される2次元アレイ構造を有する多数の画素 を含んで前記光源側から入射された光から画像を生成 し、これを反射させる画像生成手段160と、前記光源 側から入射された光を透過させ、前記画像生成手段から 反射されて再入射された光を反射させるように光経路上 に傾いて配置された透過/反射面を有する臨界角プリズ ム150と、前記臨界角プリズムの透過/反射面から反 射して入射された光がスクリーンに向かうように拡大透 過させる投射レンズユニット170とを含む。 (57) [Summary] (with correction) [Problem] To enable the traveling path of light to be changed by employing a critical angle prism, to greatly improve the brightness of a screen, and to change the light path by polarized light. Provided is a reflective projector that facilitates optical alignment by eliminating the need for a polarizing beam splitter that is sensitive to the angle of incidence of light. SOLUTION: An image is generated from light incident from the light source side including a light source 110 for generating and projecting light, and a plurality of pixels each having an independently driven two-dimensional array structure, and reflecting the image. An image generation means 160 and a transmission / reflection surface inclined on an optical path so as to transmit light incident from the light source side and reflect light reflected and re-entered from the image generation means. A critical angle prism 150 and a projection lens unit 170 for expanding and transmitting incident light reflected from the transmission / reflection surface of the critical angle prism toward the screen.

Inventors

  • 👤 Soon-Cheol Choi
  • 👤 舜 ▲てつ▼ 崔

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-09 15:22
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/31; H04N9/3141; H04N9/315; H04N5/00; H04N5/74; H04N5/7416; H04N5/7441; H04N5/7458

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