发明授权
- 专利标题： Display apparatus
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申请号： US359561申请日： 1989-06-01
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公开(公告)号： US5089903A公开(公告)日： 1992-02-18
- 发明人: Tetsuro Kuwayama , Naosato Taniguchi , Yoko Yoshinaga , Nobuo Kushibiki
- 申请人： Tetsuro Kuwayama , Naosato Taniguchi , Yoko Yoshinaga , Nobuo Kushibiki
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX63-135634 19880603
- 主分类号： B60K35/00
- IPC分类号： B60K35/00 ; G02B27/00 ; G02B27/01 ; G03H1/02
摘要：
A display apparatus comprises a display, a first diffraction grating for diffracting light from the display, and a second diffraction grating for diffracting diffracted light from the first diffraction grating, so that a half-width of the first diffraction grating is set to be larger than that of the second diffraction grating.
公开/授权文献
- US5685331A Oil level regulator 公开/授权日：1997-11-11
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