Title:
LIGHT INPUT DEVICE
Document Type and Number:
Japanese Patent JPH02300640
Kind Code:
A
Abstract:
PURPOSE:To give the high-speed and stable change of optical characteristic with simple structure by providing a switch and an optical characteristic conversion part in respective entrance parts in a light conductor provided with plural entrances and one or more exists. CONSTITUTION:Light transmitted from a light source 1 to a photodetector part 6 passes through the entrance whose light incident port 3 with the switch is open and then passes through a light filter attaching part 2 for converting the optical characteristic. Since a condition is set only by the action of the switch 3, an operation is stably performed at a quite high speed.
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Inventors:
WATANABE FUMIHIRO
Application Number:
JP12310989A
Publication Date:
December 12, 1990
Filing Date:
May 16, 1989
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G01N21/01; G01J1/02; G02B6/28; G02B26/02; (IPC1-7): G01J1/02; G01N21/01; G02B6/28; G02B26/02
Attorney, Agent or Firm:
Masuo Oiwa (2 outside)