Optical element, optical element manufacturing method and...

Details Optical element, optical element manufacturing method and... Optical element, optical element manufacturing method and...

2011-03-15

2011-03-15

Agustin, Peter Vincent (Department: 2627)

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07907499

ABSTRACT:
An optical element includes: opposing surfaces each including two areas each of which includes a fine-periodic structure. The fine-periodic structures of the two areas have different directions from each other in each of the opposing surfaces. One of the opposing surfaces with the fine-periodic structures works as a quarter-wave plate and the other of the opposing surfaces with the fine-periodic structures works as a polarization separating element. A boundary of the two areas in one of the opposing surfaces and a boundary of the two areas in the other of the opposing surfaces are positionally identical.

REFERENCES:
patent: 4654839 (1987-03-01), Endo
patent: 5687153 (1997-11-01), Komma et al.
patent: 5825555 (1998-10-01), Oono et al.
patent: 6201780 (2001-03-01), Katayama
patent: 6240053 (2001-05-01), Akiyama
patent: 6272099 (2001-08-01), Mizuno et al.
patent: 7145710 (2006-12-01), Holmes
patent: 7170661 (2007-01-01), Ogasawara et al.
patent: 7236442 (2007-06-01), Sugiki et al.
patent: 2004/0085660 (2004-05-01), Hara
patent: 2007/0159932 (2007-07-01), Takeshita et al.
patent: 2010/0002299 (2010-01-01), Masuda et al.
patent: 61-155801 (1986-09-01), None
patent: 62-212940 (1987-09-01), None
patent: 2005-114704 (2005-04-01), None
patent: 2005-352378 (2005-12-01), None
patent: 2006-252716 (2006-09-01), None
patent: 2006-323926 (2006-11-01), None
patent: 2007-183303 (2007-07-01), None
S. Kawakami, “At the front of practical application of photonic crystal”, o plus E, vol. 28, No. 4, pp. 381-385 (Apr. 2006).

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