Polarization-balanced beamsplitter

Details Polarization-balanced beamsplitter Polarization-balanced beamsplitter

1996-06-11

1998-02-17

Shafer, Ricky D.

Optical: systems and elements

Polarization without modulation

Polarizarion by dichroism

359495, 359496, 359497, 359629, 359634, 359638, G02B 530, G02B 2710, G02B 2728

Patent

active

057197024

ABSTRACT:
A beamsplitter assembly that includes several beamsplitter cubes arranged to define a plurality of polarization-balanced light paths. Each polarization-balanced light path contains one or more balanced pairs of light paths, where each balanced pair of light paths includes either two transmission light paths with orthogonal polarization effects or two reflection light paths with orthogonal polarization effects. The orthogonal pairing of said transmission and reflection light paths cancels polarization effects otherwise caused by beamsplitting.

REFERENCES:
patent: 1320625 (1919-11-01), Kunz
patent: 2267948 (1941-12-01), Rantsch
patent: 3501640 (1970-03-01), Harris
patent: 3817624 (1974-06-01), Martin
patent: 4309108 (1982-01-01), Siebert
patent: 4749259 (1988-06-01), Ledebuhr
patent: 4989076 (1991-01-01), Owada et al.
patent: 5165080 (1992-11-01), Healey
E. C. Ho and J. A. Dobrowolski "Neutral and Color Sensitive Beam Splitting Assemblies with Polarization Independent Intensities",: Applied Optics, vol. 31, No. 19, 1 Jul. 1992, pp. 3813-3820.

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