发明名称 |
TRANSMISSIVE PHASE PLATE, POLARIZED BEAM SPLITTER, AND PROJECTION DISPLAY |
摘要 |
A transmissive phase plate with a function of correcting direction of polarization of light rays in an incident divergent or convergent light flux in addition to functions as a wave plate. Conditions of polarization of incident light rays are corrected by a polarization-correcting optical multi-layer coating which is formed by alternately depositing a high refractivity layer and a low refractivity layer on curved substrative surface of a predetermined radius of curvature. The transmissive phase plate can be applied to correct conditions of polarization of incident light rays of a polarized beam splitter for the purpose of improving contrast ratio of a projection display.
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申请公布号 |
US2007104073(A1) |
申请公布日期 |
2007.05.10 |
申请号 |
US20060556406 |
申请日期 |
2006.11.03 |
申请人 |
FUJINON SANO CORPORATION |
发明人 |
KATO SHIGERU;KOMATSU TAKUYA;KAWAMURA YOSHIJI |
分类号 |
G11B7/135 |
主分类号 |
G11B7/135 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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