Optical device and optical system

Details Optical device and optical system Optical device and optical system

2009-02-11

2011-12-20

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S226000, C359S303000, C359S489040, C356S308000, C356S327000

Reexamination Certificate

active

08080777

ABSTRACT:
Provided is an optical device, comprising a plurality of polarizers that are arranged along a propagation direction of incident light; a first phase element that is disposed between the plurality of polarizers and that has a phase lag axis forming a prescribed angle relative to transmission axes of the polarizers arranged along the propagation direction; and a second phase element that is disposed between the first phase element and one of the polarizers arranged along the propagation direction, and that provides the incident light with a prescribed phase difference. An angle of the phase lag axis of the second phase element is adjusted such that the optical device transmits light in a prescribed wavelength region in the incident light.

REFERENCES:
patent: 2005/0047108 (2005-03-01), O'Connor et al.
patent: 2010/0103417 (2010-04-01), Otani et al.
patent: 2971945 (1999-11-01), None
patent: 2000-267127 (2000-09-01), None
patent: 91/06888 (1991-05-01), None

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