| 发明名称 | Multi-lens LED-array optic system | ||
| 摘要 | Lighting apparatus having a first lens over the LED emitter and a second lens over the first lens, and including: a first optical surface which is a first-lens outer surface configured to refract light from the emitter; a second optical surface which is a second-lens inner surface spaced from the first optical surface; and a third optical surface which is a second-lens outer surface configured to refract light from the second optical surface toward a preferential side. One embodiment includes asymmetric primary and secondary lenses. | ||
| 申请公布号 | US9255686(B2) | 申请公布日期 | 2016.02.09 |
| 申请号 | US201213441540 | 申请日期 | 2012.04.06 |
| 申请人 | Cree, Inc. | 发明人 | Wilcox Kurt S.;Keller Bernd;Lowes Ted;Andrews Peter S.;Strom Christopher |
| 分类号 | F21V5/00;F21V7/00;F21V5/04;F21V13/02;G02B19/00;F21W131/103;F21Y101/02;F21Y105/00;H01L25/075;H01L33/54 | 主分类号 | F21V5/00 |
| 代理机构 | Jannson Munger McKinley & Kirby Ltd. | 代理人 | Jannson Munger McKinley & Kirby Ltd. |
| 主权项 | 1. A lighting apparatus for preferential-side illumination from an LED light emitter having an axis, the apparatus having a first lens over the emitter and a second lens over the first lens, the apparatus comprising: a first optical surface which is a first-lens outer surface configured to refract light from the emitter; a second optical surface which is a second-lens inner surface spaced from the first optical surface and which includes: a refracting portion surrounding the first optical surface and including front and back sectors configured differently from one another; anda reflecting portion around the back sector, the reflecting portion positioned to receive light refracted by the back sector for total internal reflection (TIR) toward the preferential side; and a third optical surface which is a second-lens outer surface configured to refract light from the second optical surface toward the preferential side. | ||
| 地址 | Durham NC US | ||