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

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

2011-03-23

2011-10-04

Fineman, Lee (Department: 2872)

Optical: systems and elements

Polarization without modulation

Polarization by birefringence

C359S489150

Reexamination Certificate

active

08031401

ABSTRACT:
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.

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Office Action Mailed Jul. 8, 2010 in U.S. Appl. No. 11/783,398.
Foreign Office Action dispatched Jul. 13, 2010 in Japanese Application No. 2007-097996 (with translation).
Office Action mailed Nov. 24, 2010 in U.S. Appl. No. 11/783,398.

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