发明授权
- 专利标题: Image display apparatus, and transmissive screen and reflecting mirror used for same
- 专利标题(中): 图像显示装置,以及用于其的透射屏和反射镜
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申请号: US11062742申请日: 2005-02-23
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公开(公告)号: US07460301B2公开(公告)日: 2008-12-02
- 发明人: Daisuke Imafuku , Hiroki Yoshikawa , Tetsu Ohishi
- 申请人: Daisuke Imafuku , Hiroki Yoshikawa , Tetsu Ohishi
- 申请人地址: JP Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: McDermott Will & Emery LLP
- 优先权: JP2004-315002 20041029
- 主分类号: G03B21/56
- IPC分类号: G03B21/56 ; G03B21/60 ; G02B3/08
摘要:
The present invention provides a technique suitable for making a set more compact by realizing reduction in height and reduction in depth. An image display apparatus of the present invention includes a reflecting mirror (4) for reflecting the image sent from a projection lens (2), and guiding the image to a transmissive screen (3). The reflecting-mirror (4) includes a planar mirror section (4a) for reflecting, of the entire image exiting the projection lens (2), only image portions projected onto the upper section of the transmissive screen (3), and a Fresnel mirror section (4b) with multiple reflective prisms for reflecting only image portions projected onto the lower section of the screen (3).
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