发明名称 |
Optically retro-reflecting sphere |
摘要 |
An optically retro-reflecting sphere includes an inner sphere and an outer concentric spherical shell, and can be coupled to a reflective surface. Light entering the optically retro-reflecting sphere from an incident direction is reflected by the sphere generally towards an exit direction, where the exit direction is parallel and opposite to the incident direction. The inner sphere and outer shell have different refractive indices, selected so that the reflected light is reflected with a non-uniform angular distribution about the exit direction.
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申请公布号 |
US7224533(B2) |
申请公布日期 |
2007.05.29 |
申请号 |
US20040984344 |
申请日期 |
2004.11.08 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
LERNER SCOTT;KOCH TIM R.;PRASAD RAVI |
分类号 |
G02B5/126;G02B3/00;G02B17/00 |
主分类号 |
G02B5/126 |
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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