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Title:
LIGHT THERAPY DEVICE AND LIGHT THERAPY DEVICE OPERATION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/040008
Kind Code:
A1
Abstract:
A light therapy device 1 is structured so as to comprise: a laser light source 8 that irradiates a target location T with a laser; a limit switch 10 that detects that the laser light source 8 has approached a prescribed distance with regard to the target location T, and outputs a proximity signal; and an optical sensor 7 that detects the distance to the target location T and outputs a distance signal S corresponding to said distance, wherein after the proximity signal has been detected, a reference value L0 is set on the basis of the detected distance signal S, and the laser irradiation by the laser light source 8 is allowed in accordance with the amount of variation in the distance signal S with regard to the reference value L0.

Inventors:
NANJO TAKUYA (JP)
KAWASE YUKI (JP)
SATO TOSHIHIRO (JP)
TAKAHASHI KAZUNORI (JP)
Application Number:
PCT/JP2020/032720
Publication Date:
March 04, 2021
Filing Date:
August 28, 2020
Export Citation:
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Assignee:
TEIJIN PHARMA LTD (JP)
UNITAC CO LTD (JP)
International Classes:
A61N5/067
Foreign References:
JP2000342702A2000-12-12
JPS63182764U1988-11-25
US20190015681A12019-01-17
JPS6123910A1986-02-01
DE102015101880A12015-08-13
JP2000334053A2000-12-05
JP2012231978A2012-11-29
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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