Laminated half-wave plate, polarizing converter, polarized...

Details Laminated half-wave plate, polarizing converter, polarized... Laminated half-wave plate, polarizing converter, polarized...

2011-08-09

2011-08-09

Fineman, Lee (Department: 2872)

Optical: systems and elements

Polarization without modulation

Polarization by birefringence

C359S489150

Reexamination Certificate

active

07995276

ABSTRACT:
A first and a second wave plates using quartz crystal having birefringence are laminated together in such a manner that their optical axes intersect to form a laminated wave plate functioning as a half-wave plate as a whole. Phase differences of the first and the second wave plates relative to an ordinary ray and an extraordinary ray with respect to a predetermined wavelength λ are set to be Γ1and Γ2, an order of a high-mode order is set to be a natural number n, whereby the high-order mode laminated half-wave plate is formed so as to satisfy: Γ1=180°+360°×n; and Γ2=180°+360°×n.

REFERENCES:
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patent: A-2010-128329 (2010-06-01), None
Ammann, O. E., Synthesis of Optical Birefringent Networks, Progress in Optics IX, Amsterdam, North Holland Pub. Co, New York Interscience Publishers, 1971, pp. 123-177.
Foreign Office Action dispatched Jul. 13, 2010 in Japanese Application No. 2007-097996 (with translation).
Translation of JP-B2-2519198 filed May 17, 1996.

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