ANGLE ADJUSTMENT MECHANISM OF OPTICAL INSTRUMENT FOR OPTICAL COMMUNICATION

PROBLEM TO BE SOLVED: To provide an angle adjustment system which compensates for a variable amount of a luminous parallel degree for directly leading light to a single mode fiber from spatial light with ease, efficiently, at a low cost in optical radio communication within a close range. SOLUTION: An angle adjustment mechanism of an optical receiving fiber collimator is composed of a fixing and supporting portion, a driven supporting portion for supporting a fiber collimator, a fixed supporting axis fixed to at least one fixed part of the fixing and supporting portion and the driven supporting portion, a first elastic member shortening the distance between moving parts of the fixing and supporting portion and the driven supporting portion, a second elastic member elongating the distance between moving bodies of the fixing and supporting body and the driven supporting body, an angle adjusting mechanism driven by an external drive control portion, an optical coupler 42 taking out monitor light from received light, and a control portion controlling the angle adjusting mechanism so that a power measured value of the monitored light becomes the maximum, through the external drive control portion 54. COPYRIGHT: (C)2005,JPO&NCIPI