Optical image rotators

Details Optical image rotators Optical image rotators

1988-09-02

1990-08-14

Arnold, Bruce Y.

350166, 350286, G02B 530, G02B 504

Patent

active

049482289

ABSTRACT:
An optical rotator such as a Pechan rotator is arranged to rotate an image about a given axis. Light entering an input surface of the rotator is subjected to a number (e.g. five) of reflections, alternate reflections being total internal reflections and the intervening ones being mirror reflections. At least one of the surfaces, preferably one at which total internal reflection occurs, bears a layered polarizing material arranged to impart a defined polarization effect as between light entering and exiting the rotator.

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patent: 4657356 (1987-04-01), Matsumura

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