发明授权
- 专利标题: Hologram lens
- 专利标题(中): 全息镜头
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申请号: US632848申请日: 1984-07-20
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公开(公告)号: US4688880A公开(公告)日: 1987-08-25
- 发明人: Kimio Tatsuno , Keiji Kataoka , Seiji Yonezawa
- 申请人: Kimio Tatsuno , Keiji Kataoka , Seiji Yonezawa
- 申请人地址: JPX Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX58-134325 19830725
- 主分类号: G02B5/32
- IPC分类号: G02B5/32 ; G03H1/02 ; G11B7/135
摘要:
A hologram lens of the present invention has a spherical hologram surface, the center of said spherical surface being in agreement with a focal point of the lens, and the radius of said spherical surface being in agreement with a focal distance of the lens. Therefore, the hologram lens of the invention produces little aberration.
公开/授权文献
- US5639069A Fence construction assembly and method of making the same 公开/授权日:1997-06-17
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