Title:
照明装置
Document Type and Number:
Japanese Patent JP6650447
Kind Code:
B2
Abstract:
One embodiment of the present invention is an illumination apparatus comprising first and second wavelength conversion members which absorb part of excitation light and emits first and second wavelength-converted light, and a holder which holds the wavelength conversion members. The holder includes a holder incidence portion which the excitation light enters, a holder emission portion which emits the first and second wavelength-converted light, and a through hole extending from the holder incidence portion to the holder emission portion. A reflector is formed on an inner surface of the through hole to reflect the first and the second wavelength-converted light. At least two regions of an equal light distribution angle emission region where light distribution angles of light emitted from within a predetermined region are substantially equal and a light distribution angle varying emission region where light distribution angles are different, are present in a region surrounded by the reflector. The first and second wavelength-converted light whose light distribution angles are substantially equal are emitted by disposing both a substantial light emission point of the first wavelength conversion member and a substantial light emission point of the second wavelength conversion member in the equal light distribution angle emission region.
Inventors:
Kazuaki Tamura
Masahiro Nishio
Satoshi Ohara
Masahiro Nishio
Satoshi Ohara
Application Number:
JP2017523024A
Publication Date:
February 19, 2020
Filing Date:
June 10, 2015
Export Citation:
Assignee:
Olympus Endo Technology America Inc.
International Classes:
F21S2/00; F21V8/00; F21V9/38; G02B5/20
Domestic Patent References:
| JP2014171511A | ||||
| JP2013244297A | ||||
| JP2006173498A | ||||
| JP2014023815A | ||||
| JP2014154313A |
Foreign References:
| WO2012144522A1 |
Attorney, Agent or Firm:
Kurata Masatoshi
Nobuhisa Nogawa
Naoki Kono
Tadashi Inoue
Ukai Ken
Shigeru Iino
Nobuhisa Nogawa
Naoki Kono
Tadashi Inoue
Ukai Ken
Shigeru Iino