Title:
DEVICE FOR PREVENTING SOILING OF CAMERA LENS FOR MEASURING INSTRUMENT
Document Type and Number:
Japanese Patent JPH06202220
Kind Code:
A
Abstract:
PURPOSE: To provide a camera lens soiling preventing device simple in maintainability so that lens is surely protected from being soiled with dust, etc.
CONSTITUTION: In the staining preventing device protecting the camera lens for a measuring instrument used by locating the camera in an observing place from the dust, a filmy filter 4 unreeled from a roll 5 is arranged in the front surface of the lens 2 of the camera 1 to cover a lens surface, and a filter has a scroll operation periodically or as necessary, so that filter unreeled from the roll is wound by a winding part 6 and the filter surface covering the lens is refreshed to a pure filter surface one after another.
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Inventors:
ONO KAZUO
ARAGAI KAZUTERU
KITAMURA TOMIO
ARAGAI KAZUTERU
KITAMURA TOMIO
Application Number:
JP34740892A
Publication Date:
July 22, 1994
Filing Date:
December 28, 1992
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD
International Classes:
G02B7/02; G03B17/02; (IPC1-7): G03B17/02; G02B7/02
Attorney, Agent or Firm:
Iwao Yamaguchi