Thin film beamsplitter optical element for use in an image-formi

Details Thin film beamsplitter optical element for use in an image-formi Thin film beamsplitter optical element for use in an image-formi

1988-04-22

1990-01-30

Sugarman, Scott J.

350446, G02B 1700

Patent

active

048969524

ABSTRACT:
A beamsplitter optical element, including a triangular substrate, such as a prism, having a plane face corresponding to the hypotenuse of the prism which is coated with a thin film structure having materials and thicknesses, which effect a division of each light beam such as into a reflected and a transmitted portion, in such a way that the beams suffer no net aberration as a result of multiple reflections within the thin film structure, and a second triangular substrate, such as a prism having a plane face, corresponding to the hypotenuse, optically bonded to the thin film structure deposited on the hypotenuse of the first prism.

REFERENCES:
patent: 3712711 (1973-01-01), Adachi
patent: 3748020 (1973-07-01), Fischer et al.
patent: 4128303 (1978-12-01), Onoki et al.
patent: 4171871 (1979-10-01), Dill et al.
patent: 4195908 (1980-04-01), Kestigian et al.
patent: 4199226 (1980-04-01), Weber et al.

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