Title:
照明装置
Document Type and Number:
Japanese Patent JP7117488
Kind Code:
B2
Abstract:
To provide a luminaire capable of enhancing the dependability of detecting the disconnection of an optical fiber.SOLUTION: A luminaire 10 includes a laser light source 41, an optical fiber 30 for guiding light emitted by the laser light source 41, a wavelength conversion element 21 for converting the light guided by the optical fiber 30 into illumination light having a different wavelength band, a light receiving part 42 for receiving return light as part of the illumination light, guided by the optical fiber 30 in the opposite direction to the light, a control part 49 (a disconnection detection part) for detecting the disconnection of the optical fiber 30 on the basis of the detection result of the light receiving part 42, and a bandpass filter 52 (a first filter) arranged on a light path L1 of the light from the laser light source 41 to the optical fiber 30, where there is no interference with the return light, for extracting light having a first wavelength band including the emission peak wavelength of the light from the light.SELECTED DRAWING: Figure 2
Inventors:
Hiroshi Kitano
Takayuki Yoshiyuki
Shuji Kawachi
Shinichi Kitaoka
Erika Kawabata
Takayuki Yoshiyuki
Shuji Kawachi
Shinichi Kitaoka
Erika Kawabata
Application Number:
JP2018210978A
Publication Date:
August 15, 2022
Filing Date:
November 09, 2018
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
F21S2/00; F21V7/00; F21V8/00; F21V9/20; F21V9/30; F21V23/00; F21V25/04
Domestic Patent References:
| JP2008026698A | ||||
| JP2003247959A | ||||
| JP2013197033A | ||||
| JP2017120864A | ||||
| JP9181384A |
Attorney, Agent or Firm:
Hiroi Arai
Teraya Eisaku
Shinichi Michizaka
Teraya Eisaku
Shinichi Michizaka