发明申请
- 专利标题: Wide emitting lens for LED useful for backlighting
- 专利标题(中): 用于LED的宽发射透镜可用于背光
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申请号: US11093961申请日: 2005-03-29
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公开(公告)号: US20060102914A1公开(公告)日: 2006-05-18
- 发明人: Willem Smits , Robert Hendriks , Grigoriy Basin , Frans Konijn , Robert West , Paul Martin , Gerard Harbers
- 申请人: Willem Smits , Robert Hendriks , Grigoriy Basin , Frans Konijn , Robert West , Paul Martin , Gerard Harbers
- 专利权人: Lumileds Lighting U.S., LLC
- 当前专利权人: Lumileds Lighting U.S., LLC
- 主分类号: H01L33/00
- IPC分类号: H01L33/00 ; H01L29/22 ; H01L29/227
摘要:
Lenses and certain fabrication techniques are described. A wide-emitting lens refracts light emitted by an LED die to cause a peak intensity to occur within 50-80 degrees off the center axis and an intensity along the center axis to be between 5% and 33% of the peak intensity. The lens is particularly useful in a LCD backlighting application. In one embodiment, the lens is affixed to the backplane on which the LED die is mounted and surrounds the LED die. The lens has a hollow portion that forms an air gap between the LED die and the lens, where the light is bent towards the sides both at the air gap interface and the outer lens surface interface. The lens may be a secondary lens surrounding an interior lens molded directly over the LED die.
公开/授权文献
- US07352011B2 Wide emitting lens for LED useful for backlighting 公开/授权日:2008-04-01
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