Title:
LIGHTING SYSTEM, LIGHTING METHOD, AND ENDOSCOPE
Document Type and Number:
Japanese Patent JP2015223462
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce speckle noises by a further simple method.SOLUTION: The lighting system includes: at least one laser light source exiting laser beams; a coupling optical system for coupling the laser beams exited from the laser source, with optical fibers; a collimating optical system shaping the laser beams exited from the optical fibers, into a parallel light flux; a diffusion member disposed near a rear-side focal position of the collimating optical system and diffusing the parallel light flux to generate a secondary light source; and a condenser optical system forming an image of the secondary light source at an incidence end of a light guide at a prescribed paraxial lateral magnification.
Inventors:
MATSUNOBU TAKESHI
YAMAGUCHI KYOJI
FURUKAWA AKIO
YAMAGUCHI KYOJI
FURUKAWA AKIO
Application Number:
JP2014111994A
Publication Date:
December 14, 2015
Filing Date:
May 30, 2014
Export Citation:
Assignee:
SONY CORP
International Classes:
A61B1/00; G02B13/18; G02B19/00; G02B23/26; G02B25/02
Domestic Patent References:
| JP2013090706A | 2013-05-16 | |||
| JP2013195489A | 2013-09-30 | |||
| JP2013099458A | 2013-05-23 | |||
| JP2012231835A | 2012-11-29 | |||
| JP2010175549A | 2010-08-12 | |||
| JP2012248401A | 2012-12-13 | |||
| JPH03155518A | 1991-07-03 | |||
| JP2008242371A | 2008-10-09 |
Foreign References:
| WO2013146014A1 | 2013-10-03 |
Attorney, Agent or Firm:
Miaki Kametani
Tetsuo Kanamoto
Koji Hagiwara
Kazuki Matsumoto
Tetsuo Kanamoto
Koji Hagiwara
Kazuki Matsumoto
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