Equivalent wollaston prism for an optical pick-up head and an op

Details Equivalent wollaston prism for an optical pick-up head and an op Equivalent wollaston prism for an optical pick-up head and an op

1993-09-03

1995-09-05

Ullah, Akm E.

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

G02B 2710, G02B 2712

Patent

active

054484073

ABSTRACT:
An equivalent Wollaston prism is disclosed for splitting an incident light beam into two adjacent beams which are S-polarized and P-polarized respectively. The polarized light beams are at approximately a right angle with the incident light beam, therefore the structure of optical pick-up head will not be limited to a straight line configuration. The entire structure is compact, easy to align, and economical.

REFERENCES:
patent: 4367009 (1983-01-01), Suzki
patent: 4963003 (1990-10-01), Hiiro
patent: 4969730 (1990-11-01), van den Brandt
patent: 5056887 (1991-10-01), Ohshima
patent: 5084783 (1992-01-01), Dewey et al.

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