Astigmatism generating device

Details Astigmatism generating device Astigmatism generating device

1990-05-18

1993-08-03

Arnold, Bruce Y.

Optical: systems and elements

Polarization without modulation

Polarization by scattering

359606, 359638, 359833, 369112, G02B 2728, G02B 504, G11B 700

Patent

active

052334660

ABSTRACT:
An optical device with an improved efficiency in the transmission of light through the device is disclosed. The device having an optical element in a block shape which is made up of a first plane on which incident light is presented at a predetermined incidence angle. The incident light is transmitted through the first plane and is reflected off of another plane which is oriented at a predetermined angle with respect to a plane perpendicular to the first plane. The reflected light is next totally transmitted through an exit plane situated parallel to the first plane. The incidence angle is predetermined so that the angle at which the light is finally transmitted with respect to the exit plane is a polarization angle satisfying Brewster's rule. Therefore, at the exit plane, the light is totally transmitted and thus none of the light is reflected, resulting in a greatly improved degree of efficiency in the transmission of light through the device.

REFERENCES:
patent: 4514050 (1985-04-01), Stites
patent: 4525034 (1985-06-01), Simmons
patent: 4778984 (1988-10-01), Nakamura
patent: 4805992 (1989-02-01), Maeda
patent: 4930878 (1990-06-01), Bergner et al.

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