投射型表示装置

Projection display apparatus

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projection display apparatus capable of striving for a low cost and, at the same time, preventing the deterioration of picture quality of a projection picture due to heat of a polarization element. <P>SOLUTION: The projection display apparatus is provided with a color splitting means for splitting irradiating light from a light source into light rays of a plurality of colors, a plurality of light modulating means for modulating the split light rays respectively, a color synthesizing means for synthesizing the light rays modulated respectively by a plurality of the light modulating means and a projection means for projecting the synthesized light to the surface to be projected. Therein, the color synthesizing means has a first prism in which the polarization element and a substrate are stuck together and a second prism whose volume is larger than that of the first prism in which the polarization element is stuck. <P>COPYRIGHT: (C)2005,JPO&NCIPI
【課題】低コストを図りつつ、偏光素子の熱による投射画像の画質劣化を防止できる。 【解決手段】光源からの照射光を複数の色の光に分割する色分割手段と、分割された光をそれぞれ変調する複数の光変調手段と、前記複数の光変調手段によりそれぞれ変調された光を合成する色合成手段と、合成された光を被投射面に投射する投射手段とを具備する投射型表示装置において、前記色合成手段は、偏光素子と基板が貼り合わされた第1のプリズムと、偏光素子が貼り付けられた前記第1のプリズムより体積が大きい第2のプリズムを有している。 【選択図】 図2

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)

    Title

Cited By (3)

    Publication numberPublication dateAssigneeTitle
    JP-2006113544-AApril 27, 2006Seiko Epson Corp, セイコーエプソン株式会社光学装置及びプロジェクタ
    JP-4687295-B2May 25, 2011セイコーエプソン株式会社光学装置及びプロジェクタ
    US-7623200-B2November 24, 2009Seiko Epson CorporationPolarizing plate, liquid crystal device, and electronic apparatus