Optical transmitter-receiver

Details Optical transmitter-receiver Optical transmitter-receiver

1992-11-12

1996-03-19

Boudreau, Leo

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359172, 359159, H04B 1000

Patent

active

055007546

ABSTRACT:
A two-way optical transmitter in which optical transmitters each having light projecting means and light receiving means on an optical axis intersecting the optical axis of the light projecting means are disposed in opposed relationship with each other with a predetermined distance interposed therebetween and which effects two-way optical transmission, wherein a polarizing beam splitter, having a cemented surface forming a certain angle with respect to the optical axes of the light projecting means and the light receiving means is installed near the point of intersection between the two optical axes, linearly polarized light from the light projecting means is reflected by the cemented surface of the polarizing beam splitter to thereby provide transmission light, and an optical axis leading from the polarizing beam splitter to the light projecting means or an optical axis leading from the polarizing beam splitter to the light receiving means is set at an angle of approximately 45.degree. with respect to the vertical direction when the apparatus is seen from on the optical axis of the transmitted light.

REFERENCES:
patent: 4252404 (1981-02-01), DiVita
patent: 4879763 (1989-11-01), Wood
patent: 4888816 (1989-12-01), Sira, Jr.
patent: 5113403 (1992-05-01), Block et al.

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