发明名称 |
Light source device, lighting device and image display device |
摘要 |
A light source device includes an optical element 22 having a first face 1 opposed to a solid light emitting element 21. The optical element 22 includes second and third faces 2, 3 opposing in parallel to each other and both substantially perpendicular to the first face 1, a fourth face 4 substantially perpendicular to the second and third faces 2, 3 and also obliquely-opposed to the first face 1 and a fifth face 5 as an exit face. The fifth face 5 has an area smaller than an area of a light emitting face of the solid light emitting element 21. The light source device further includes a polarization converting element 42 having an incident surface opposing in substantially-parallel to the fifth face 5 through a space, polarization separating elements 43 for separating incident light from the optical element 22 in polarization, a first reflecting surface 45 for reflecting one of polarization-separated fluxes and wave plates 44 for converting either of phases of the polarization-separated fluxes.
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申请公布号 |
US8152317(B2) |
申请公布日期 |
2012.04.10 |
申请号 |
US20080318295 |
申请日期 |
2008.12.24 |
申请人 |
OKAMOTO NAOYA;NAKAGOSHI RYOSUKE;TAKAHASHI RYUSAKU;AIZAKI TAKATSUGU;FURUKAWA TADASHI;VICTOR COMPANY OF JAPAN, LIMITED |
发明人 |
OKAMOTO NAOYA;NAKAGOSHI RYOSUKE;TAKAHASHI RYUSAKU;AIZAKI TAKATSUGU;FURUKAWA TADASHI |
分类号 |
F21V9/14 |
主分类号 |
F21V9/14 |
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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