Title:
光源装置
Document Type and Number:
Japanese Patent JP6746897
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a light emitting device that exhibits a so-called blindfold effect by reducing transmission of external light, that is, reduces visibility from an exterior of individual phosphor layers to be arranged in the light source device without falling an amount of emerging light with respect to an amount of incident light from a light emitting element.SOLUTION: A light source device comprises: a Fresnel lens 12 that has a light incident surface 12a and light emerging surface 12b, and includes a light transmission part T, and light reflection parts R provided outside the light transmission part; and a light emitting element that opposes the light incident surface, and is arranged below the light transmission part and a part of a light transmission part side of the light reflection part.SELECTED DRAWING: Figure 1
Inventors:
Takanori Ariga
Application Number:
JP2015223193A
Publication Date:
August 26, 2020
Filing Date:
November 13, 2015
Export Citation:
Assignee:
Nichia Corporation
International Classes:
F21L4/00; G03B15/05; F21V5/00; F21V5/02; F21V5/04; F21V5/10; G02B3/08; G03B15/02
Domestic Patent References:
| JP2013168346A | ||||
| JP2011151218A | ||||
| JP2013068751A | ||||
| JP2011192494A | ||||
| JP2011171086A | ||||
| JP5281402A |
Foreign References:
| WO2013024836A1 | ||||
| US20140204592 | ||||
| CN103733093A | ||||
| US20150003081 |
Attorney, Agent or Firm:
Shinki Global IP Patent Corporation