Invention Grant
US09228702B2 LED lamp comprising light guide including first and second diffusing surfaces
有权
LED灯包括包括第一和第二扩散表面的光导
- Patent Title: LED lamp comprising light guide including first and second diffusing surfaces
- Patent Title (中): LED灯包括包括第一和第二扩散表面的光导
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Application No.: US13257839Application Date: 2010-03-23
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Publication No.: US09228702B2Publication Date: 2016-01-05
- Inventor: Petrus Johannes Maria Welten
- Applicant: Petrus Johannes Maria Welten
- Applicant Address: NL Son en Breugel
- Assignee: ELDOLAB HOLDING B.V.
- Current Assignee: ELDOLAB HOLDING B.V.
- Current Assignee Address: NL Son en Breugel
- Agency: Browdy and Neimark, PLLC
- International Application: PCT/NL2010/000052 WO 20100323
- International Announcement: WO2010/110652 WO 20100930
- Main IPC: F21V5/04
- IPC: F21V5/04 ; F21K99/00 ; F21V3/00 ; F21V8/00 ; F21Y101/02 ; F21Y113/00
Abstract:
An LED lamp is described, the LED lamp comprising an LED unit, e.g. provided on a base, in an embodiment, a fitting for contacting a power supply, and a light guide arranged to receive a light beam from the LED unit and guide the light beam towards a first light diffusing surface thereby providing a diffused light beam and whereby the light guide further comprises a second light diffusing surface facing the first light diffusing surface for diffusing at least part of the diffused light beam. The LED lamp as described enables to provide an omnidirectional light distribution, comparable to the light distribution of a conventional filament based light bulb.
Public/Granted literature
- US20120014111A1 LED LAMP COMPRISING LIGHT GUIDE INCLUDING FIRST AND SECOND DIFFUSING SURFACES Public/Granted day:2012-01-19
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