1985-11-12
1987-06-09
Corbin, John K.
350 9615, 350 9618, 350 9619, 350166, 350173, 350401, G02B 2714, G02B 626, G02B 530
Patent
active
046716130
ABSTRACT:
An improved geometry for an optical beam splitter prism permits all input and output beams to be parallel and to remain parallel while the prism is misaligned. It is particularly useful in conjunction with fiber optic couplers and is applicable to splitting with respect to light intensity, polarization or wavelength. This can be achieved through the construction of a beam splitting prism having an additional reflecting surface on one input beam and on one output beam, whereby each of these surfaces are parallel to the beam splitting surface and with two parallel input and output surfaces through which all beams pass so as to make all input and output beams parallel and remain parallel as the prism is translationally or rotationally misaligned about any axis.
REFERENCES:
patent: 3068743 (1962-12-01), Dyson
patent: 3501640 (1970-03-01), Harris
patent: 3853386 (1974-12-01), Ritter et al.
patent: 4420219 (1983-12-01), Muchel
patent: 4514046 (1985-04-01), Carlsen et al.
patent: 4566761 (1986-01-01), Carlsen et al.
Corbin John K.
Fisher Fred
GTE Laboratories Inc.
Lemmo Vincent J.
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