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Patent Searching and Data


Title:
OBSTACLE DETECTOR FOR AUTOMATIC DOOR
Document Type and Number:
Japanese Patent JPH10197651
Kind Code:
A
Abstract:

To provide an obstacle detector for automatic door capable of detecting the existence of obstacles in a detection area with a simple constitution without requiring high accuracy for setting angle of a reflector.

A detector is provided with a flood light 1 and a light receiver 2 arranged with a specific interval at one of door opening surface of an automatic door 6b, a reflection means 4 arranged on the other opening surface for reflecting the light cast from the flood light 1 and a reflection means 5 guiding the light to the light receiver 2 by reflecting the reflection light and at least one of the reflection means 4 and the means 5 is constituted of a convex mirror or at least one of reflection means is provided with a concave lens at the front or the back.


Inventors:
MORISHITA MASAZUMI
Application Number:
JP1997000004597
Publication Date:
July 31, 1998
Filing Date:
January 14, 1997
Export Citation:
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Assignee:
OPT KK
International Classes:
E05F15/14; G01J1/02; G01V8/12; G01V8/14; (IPC1-7): G01V8/14; E05F15/14; G01J1/02; G01V8/12
Attorney, Agent or Firm:
倉内 義朗