发明授权
US6163390A Method for producing a hologram and a display device using the same
失效
制造全息图的方法和使用该全息图的显示装置
- 专利标题: Method for producing a hologram and a display device using the same
- 专利标题(中): 制造全息图的方法和使用该全息图的显示装置
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申请号: US516562申请日: 2000-02-29
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公开(公告)号: US6163390A公开(公告)日: 2000-12-19
- 发明人: Tomoyuki Kanda , Kazutoshi Koie , Katsuyoshi Nishii , Masahiro Shiozawa , Katsumi Kamiya , Atsuo Ishizuka , Kenichiro Takada
- 申请人: Tomoyuki Kanda , Kazutoshi Koie , Katsuyoshi Nishii , Masahiro Shiozawa , Katsumi Kamiya , Atsuo Ishizuka , Kenichiro Takada
- 申请人地址: JPX Kariya JPX Nishio
- 专利权人: Denso Corporation,Nippon Soken, Inc.
- 当前专利权人: Denso Corporation,Nippon Soken, Inc.
- 当前专利权人地址: JPX Kariya JPX Nishio
- 优先权: JPX7-282209 19951030; JPX7-287419 19951106; JPX7-347953 19951214; JPX8-28616 19960122
- 主分类号: G02B5/32
- IPC分类号: G02B5/32 ; G03H1/04 ; G03H1/22 ; G03H1/28 ; H04N7/14 ; G03H1/02
摘要:
A method for producing a hologram recording an interference fringe formed by an object light and a reference light on a photosensitive dry plate, and the object light either having diffusing and scattering characteristics or being passed through an optical diffusion body, mainly includes the following steps: In a first step, a ratio .eta..sub.R0 /.eta..sub.00 of a first diffraction efficiency .eta..sub.00 and a second diffraction efficiency .eta..sub.R0, is calculated. The diffraction efficiency .eta..sub.00 is dependent on two object light beams. The efficiency .eta..sub.R0 is dependent on the object light and the reference light. In a second step, the intensity E.sub.O of the object light and the intensity E.sub.R of the reference light is adjusted in such a way that the ratio .eta..sub.R0 /.eta..sub.00 is set to at least 10 and the efficiency .eta..sub.00 does not exceed 5%.A display device using the above hologram is structured by a display unit for generating a signal light; a hologram screen formed by either reflection or transmission hologram, and a projecting unit for projecting the signal light to the hologram screen.According to the present invention, it is possible to easily produce a hologram, for example, a screen hologram, having no cloudiness or cloudy state when an observer observes an image displayed on the screen, and to a display device using the above hologram screen.
公开/授权文献
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