Title:
OPTICAL SENSOR DEVICE
Document Type and Number:
Japanese Patent JP2010078328
Kind Code:
A
Abstract:
To prevent dirt of an optical window or a lens, a mirror, or the like by a simple technique, when an optical sensor is used in elevator surroundings where a lot of dust and oil splashes exist.
This optical sensor device includes a lens barrel 0207 having an opening touching an external fluid at one end and an optical window 0206 at the other end, and a means for generating thermal convection for the lens barrel.
Inventors:
INOUE HIDEKI
ONUKI AKIRA
ONUKI AKIRA
Application Number:
JP2008243533A
Publication Date:
April 08, 2010
Filing Date:
September 24, 2008
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G01J1/04; B66B3/02; G02B7/02
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Yuji Toda