发明授权
US4054358A Recording a phase hologram having reduced intermodulation distortion
失效
记录具有降低的互调失真的相位全息图
- 专利标题： Recording a phase hologram having reduced intermodulation distortion
- 专利标题（中）： 记录具有降低的互调失真的相位全息图
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申请号： US684238申请日： 1976-05-07
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公开(公告)号： US4054358A公开(公告)日： 1977-10-18
- 发明人: William Joseph Burke , Ping Sheng
- 申请人： William Joseph Burke , Ping Sheng
- 申请人地址： NY New York
- 专利权人： RCA Corporation
- 当前专利权人： RCA Corporation
- 当前专利权人地址： NY New York
- 主分类号： G03H1/00
- IPC分类号： G03H1/00 ; G03H1/04
摘要：
A moveable mask with a pin hole therethrough is disposed between a source of an object beam and a holographic recording medium. The pin hole limits the angular range of rays of the object beam transmitted to the medium, thereby preventing intermodulation distortion caused by rays of the object beam that have large angles therebetween. The mask may be moved to cause all of the rays of the object beam to pass through the pin hole, whereby a hologram is recorded.
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