OPTICAL TRANSMISSION AND RECEPTION DEVICE

摘要

PROBLEM TO BE SOLVED: To lighten in weight and miniaturize a device and to improve tracking speed by cantilever-supporting a first axis rotation mechanism held by a first supporting member so that it rotates a light transmission/reception unit around a first axis and the optical transmission/reception unit by means of a second supporting member so that they rotate around a second axis orthogonal to the first axis and rotating them by means of a second rotation mechanism. SOLUTION: An optical transmission/reception unit 10 emits the transmission light of light emitting element through a transmission lens 12 and received light collected through a reception lens 13 by a light-receiving element. A first axis rotation mechanism 30 is supported by the first feed forked first supporting member 20 so that it can be rotated with the first axes 15 and 15 supporting the optical transmission/reception unit 10. A second axis rotation mechanism 50 is fitted to a second supporting member 40 so that it cantilever-supports a first supporting member 20 through a second axis 24 orthogonal to the first axis 15 and it rotates the second axis 24. The optical transmission/reception unit 10 can be rotated with the first axes 15 and 15 as centers or the second axis 24 as a center and tracking can satisfactorily be executed.