Broad band polarizing beam splitter

Details Broad band polarizing beam splitter Broad band polarizing beam splitter

1995-03-15

1997-04-29

Healy, Brian

Optical: systems and elements

Polarization without modulation

Polarizarion by dichroism

359483, 359495, 359496, 359497, 359498, 359583, 359586, 359587, 359589, G02B 530

Patent

active

056254911

ABSTRACT:
A broad band polarizing beam splitter includes a first prism, including an incident beam surface, and an interface surface. A second prism is also included with an interface surface. The second prism is positioned adjacent to the first prism with the interface surfaces of the first and second prisms being adjacent to each other. A coating is disposed between the two interface surfaces. The coating is made of a geometric or arithmetic progression of layer thicknesses of alternating high and low refractive indices. A ratio of high refractive index to low refractive index is 1.1 or greater.

REFERENCES:
patent: 2403731 (1946-07-01), MacNeille
patent: 2815695 (1957-12-01), Scharf et al.
patent: 3998524 (1976-12-01), Hubby, Jr. et al.
patent: 4955692 (1990-09-01), Merlin et al.
patent: 4966438 (1990-10-01), Mouchart et al.
patent: 5339441 (1994-08-01), Kardos et al.
patent: 5400179 (1995-03-01), Ito

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