Diffraction optical element

Details Diffraction optical element Diffraction optical element

2007-06-26

2007-06-26

Boutsikaris, Leonidas (Department: 2872)

Optical: systems and elements

Diffraction

From grating

C359S566000, C359S569000, C359S575000, C359S576000

Reexamination Certificate

active

11116083

ABSTRACT:
In a diffraction optical element in which a plurality of diffraction gratings are laminated and the maximum difference of length among optical paths of light passing through the plurality of diffraction gratins is integer multiples of a plurality of wavelengths, diffraction efficiency is further improved and even when an environmental condition changes, a deviation of the diffraction efficiency is reduced. More specifically, a diffraction optical element is disclosed which includes, as the plurality of diffraction gratings, a first diffraction grating made of a resin material, in which inorganic fine particles are dispersed, and a second diffraction grating made of a material whose organic matter composition is substantially same as that of the resin material.

REFERENCES:
patent: 5044706 (1991-09-01), Chen
patent: 5790321 (1998-08-01), Goto
patent: 6157488 (2000-12-01), Ishii
patent: 6480332 (2002-11-01), Nakai
patent: 6560019 (2003-05-01), Nakai
patent: 2003/0231396 (2003-12-01), Nakai
patent: 2004/0042102 (2004-03-01), Ukuda
patent: 0 895 099 (1999-02-01), None
patent: 1 342 557 (2003-09-01), None
patent: 1 376 161 (2004-01-01), None
patent: 04-213421 (1992-08-01), None
patent: 06-324262 (1994-11-01), None
patent: 9127322 (1997-05-01), None
patent: 2000-98118 (2000-04-01), None
patent: 3495884 (2003-11-01), None
patent: 2004-078166 (2004-03-01), None
SPIE vol. 1354 International Lens Design Conference, Jun. 11-14, 1990.

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