发明申请
- 专利标题： Efficient diffuse light source assembly and method
- 专利标题（中）： 高效漫射光源组件及方法
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申请号： US11157275申请日： 2005-06-20
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公开(公告)号： US20060009749A1公开(公告)日： 2006-01-12
- 发明人: Mark Weckwerth , Tobin Island , Robert Grove , Harvey Liu
- 申请人： Mark Weckwerth , Tobin Island , Robert Grove , Harvey Liu
- 主分类号： A61B18/20
- IPC分类号： A61B18/20
摘要：
A diffuse light source assembly and method including a light source for generating forward propagating light, a solid lightguide disposed adjacent the light source, a diffuser and a back reflecting surface. The solid lightguide includes an input face for receiving the forward propagating light, a sidewall for conveying the forward propagating light via total internal reflection, and an output face for transmitting the forward propagating light. The diffuser is disposed adjacent the output face for diffusing the transmitted forward propagating light, wherein a portion of the forward propagating light is transformed into reverse propagating light, by at least one of the output face and the diffuser, that is conveyed by sidewall via total internal reflection and transmitted by the input face. The back reflecting surface is disposed adjacent the light source for reflecting the reverse propagating light back into the lightguide via the input face.
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