Optical polarisation device

Details Optical polarisation device Optical polarisation device

1998-01-29

2000-06-06

Spyrou, Cassandra

Optical: systems and elements

Polarization without modulation

Polarizarion by dichroism

359483, 359485, 359833, 359834, G02B 530, G02B 504

Patent

active

060726288

ABSTRACT:
An optical polarization device includes a source of light emitting a non-polarised light beam. A polarization separator reflects one polarization component of the light beam and transmits the other polarization component. A reflection means receives the component reflected by the polarization separator, rotates its polarization plane through 90.degree., and returns it to the polarization separator. The polarization separator is a plane element. The reflection means is positioned on the source side of the separator and consists of a regular network of prisms, each partially covered with a reflective layer associated with a .lambda./4 plate.

REFERENCES:
patent: 5124841 (1992-06-01), Oishi
patent: 5410421 (1995-04-01), Huignard et al.
patent: 5828471 (1998-10-01), Davis et al.
patent: 5900973 (1999-05-01), Marcellin-Dibon
Patent Abstracts of Japan, vol. 011, No. 216, (P-595) 14 Juillet 1987 & JP 62034104A (Mitsubishi Electric Corp.), 14 Fevrier 1987.
Search Report for French Appln. No. 9700919.

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