发明授权
US5748272A Method for making an optical device using a laser beam interference
pattern
失效
使用激光束干涉图案制造光学装置的方法
- 专利标题: Method for making an optical device using a laser beam interference pattern
- 专利标题(中): 使用激光束干涉图案制造光学装置的方法
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申请号: US661018申请日: 1996-06-10
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公开(公告)号: US5748272A公开(公告)日: 1998-05-05
- 发明人: Keiji Tanaka , Kinya Kato , Shinji Tsuru , Shigenobu Sakai
- 申请人: Keiji Tanaka , Kinya Kato , Shinji Tsuru , Shigenobu Sakai
- 申请人地址: JPX Tokyo
- 专利权人: Nippon Telegraph and Telephone Corporation
- 当前专利权人: Nippon Telegraph and Telephone Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX5-31721 19930222; JPX5-33221 19930223; JPX5-100596 19930427; JPX5-233253 19930920; JPX5-296287 19931126
- 主分类号: G02F1/1334
- IPC分类号: G02F1/1334 ; G02F1/1347 ; G02F1/1333
摘要:
A polymer dispersed liquid crystal optical device is presented which has optical elements which control reflection, transmission and diffraction of incident light entering the device by adjusting the magnitude of the electrical field applied to the device between a maximum and a minimum limits. An optical element consists of a polymer material having an electrical field-independent refractive index, and a liquid crystal material having an electrical field-dependent refractive index. The optical elements are distributed through the device at specific inter-element spacings, thus enabling to generate reflection of incident light in accordance with Bragg's law of reflection. The inter-element spacings can also be varied by the application of the field, thus enabling to generate reflection of light of a desired wavelength. Such optical elements are ideal for use in full color optical display apparatus of a matrix driven type. Methods for producing the optical device and optical display apparatus are also presented.