Title:
LIGHT-EMITTING DEVICE LENS AND LIGHTING APPARATUS
Document Type and Number:
Japanese Patent JP2017063049
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a light-emitting device lens capable of gradient light distribution.SOLUTION: A light-emitting device lens 1 comprises a lens body 2 and a plate-shaped fixing member 3, and is configured such that the lens body 2 includes an incidence surface 2a and an emission surface 2b, the incidence surface 2a and the emission surface 2b are located in a state of facing each other at a certain distance therebetween, light from a light-emitting element is incident on the incidence surface 2a, the incident light is emitted from the emission surface 2b, the plate-shaped fixing member 3 includes: an incidence surface 3a on which the light emitted from the lens body 2 is incident; and an emission surface 3b emitting the incident light, the plate-shaped fixing member 3 further includes a collar part 3c formed from an edge portion, the incidence surface 3a of the plate-shaped fixing member 3 faces the emission surface 2b of the lens body 2, the plate-shaped fixing member 3 is disposed on the emission surface 2b of the lens body 2 in a state in which the collar part 3c of the plate-shaped fixing member 3 is located outside the emission surface 2b of the lens body 2, and an interior of the plate-shaped fixing member 3 exhibits light diffusibility.SELECTED DRAWING: Figure 1
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Inventors:
OKIMURA KATSUYUKI
Application Number:
JP2016235572A
Publication Date:
March 30, 2017
Filing Date:
December 05, 2016
Export Citation:
Assignee:
NEC LIGHTING LTD
International Classes:
F21V5/00; F21K9/23; F21K9/69; F21V5/02; F21V5/04; F21V13/02; F21V17/00; G02B3/00; G02B3/08; G02B5/02; H01L33/58; H01L51/50; H05B33/02
Domestic Patent References:
| JP2010500735A | 2010-01-07 | |||
| JP2007133173A | 2007-05-31 | |||
| JP2000036203A | 2000-02-02 |
Attorney, Agent or Firm:
Koichiro Tsujimaru
Yumi Nakayama
Isaji So
Yumi Nakayama
Isaji So