Invention Grant
- Patent Title: Surface illumination method using point light source, linear light source device, and surface illumination device using linear light source device
- Patent Title (中): 使用点光源的表面照明方法，线性光源装置和使用线性光源装置的表面照明装置
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Application No.: US13393933Application Date: 2010-09-10
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Publication No.: US08690380B2Publication Date: 2014-04-08
- Inventor: Eiichi Sato , Hiroyasu Sato , Ken Sato
- Applicant: Eiichi Sato , Hiroyasu Sato , Ken Sato
- Applicant Address: JP
- Assignee: Opto Design, Inc.
- Current Assignee: Opto Design, Inc.
- Current Assignee Address: JP
- Agency: Schwegman, Lundberg & Woessner, P.A.
- Priority: JP2009-211131 20090911
- International Application: PCT/JP2010/065630 WO 20100910
- International Announcement: WO2011/030856 WO 20110317
- Main IPC: F21V7/00
- IPC: F21V7/00 ; F21V21/00
Abstract:
A surface illumination device includes: a point light source I having high directionality; a linear light conversion unit II that converts light from the point light source into linear light; a linear light diffusion unit III that diffuses the linear light; and a surface lighting unit IV that is irradiated with diffused light and outputs surface light. The light from the point light source I is converted into the linear light by the linear light conversion unit II. The linear light thus converted is diffused in a predetermined direction by the linear light diffusion unit III. The diffused light is radiated on the surface lighting unit IV to be converted into surface light and radiated.
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