Dielectric layer polarizer

Details Dielectric layer polarizer Dielectric layer polarizer

1989-04-04

1990-10-30

Arnold, Bruce Y.

350164, 350166, G02B 2710, G02B 528, G02B 110, G02B 2728

Patent

active

049664387

ABSTRACT:
The invention relates in particular to polarizing light whose angle of incidence may vary substantially, e.g. over .+-.10.degree.. A polarizing stack (22) constituted by dielectric layers (30, 31, 32, 33, 34, . . . ) is formed on an oblique face (4). It is in the form of a repetitive sucession of symmetrical sequences (30, 31, 40) each constituted by two half-thickness low refractive index layers (30, 40) on either side of a high refracture index layer (31). The invention is particularly applicable to polarizing the light emitted by a semiconductor laser.

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