Diffraction optical device and optical system including same

Details Diffraction optical device and optical system including same Diffraction optical device and optical system including same

2006-03-21

2006-03-21

Chang, Audrey (Department: 2872)

Optical: systems and elements

Diffraction

From grating

C359S566000, C359S673000, C359S692000

Reexamination Certificate

active

07016114

ABSTRACT:
A diffraction optical device includes a first diffraction element and a second diffraction element arranged adjacent to each other. One of the first diffraction element and the second diffraction element has a positive power, and the other has a negative power. The first diffraction element reduces the incident angle of light upon the second diffraction element. As a result, a lowering of diffraction efficiency due to the dependency thereof upon the incident angle of light is suppressed, and flare light is prevented from occurring due to diffracted light of unnecessary orders.

REFERENCES:
patent: 4390279 (1983-06-01), Suwa
patent: 5044706 (1991-09-01), Chen
patent: 5148314 (1992-09-01), Chen
patent: 5170207 (1992-12-01), Tezuka et al.
patent: 5229880 (1993-07-01), Spencer et al.
patent: 5253087 (1993-10-01), Yang
patent: 5631779 (1997-05-01), Kashima
patent: 5636000 (1997-06-01), Ushiba et al.
patent: 5790321 (1998-08-01), Goto
patent: 5847877 (1998-12-01), Imamura et al.
patent: 5864381 (1999-01-01), Neal et al.
patent: 5995279 (1999-11-01), Ogino et al.
patent: 5999327 (1999-12-01), Nagaoka
patent: 5999334 (1999-12-01), Kohno
patent: 6018414 (2000-01-01), Chipper
patent: 6052234 (2000-04-01), Mukai et al.
patent: 6067196 (2000-05-01), Yamamoto et al.
patent: 6097547 (2000-08-01), Ogata et al.
patent: 6104533 (2000-08-01), Clark et al.
patent: 6157488 (2000-12-01), Ishii
patent: 6301062 (2001-10-01), Ohmori et al.
patent: 4-213421 (1992-08-01), None
patent: 4-214516 (1992-08-01), None
patent: 6-324262 (1994-11-01), None
patent: 9-127322 (1997-05-01), None
patent: 10-133149 (1998-05-01), None
patent: 11-223717 (1999-08-01), None
M.W. Farn, et al., “Diffractive Doublet Corrected On-Axis at Two Wavelengths,”Proceedings of the SPIE: International Lens Design Conference, vol. 1354, Jun. 11-14, 1990, pp. 24-29.
C. Londoño, et al., “The Design of Achromatized Hybrid Diffractive Lens Systems,”Proceedings of the SPIE: International Lens Design Conference, vol. 1354, Jun. 11-14, 1990, pp. 30-37.
A.D. Lathman, et al., “Binary Optics in Lens Design”, Proceedings of the SPIE: International Lens Design Conference, vol. 1354, Jun. 11-14, 1990, pp. 297-309.
A.P. Wood, “Using hybrid refractive-diffractive elements in infrared Petzval objectives”, Proceedings of the SPIE: International Lens Design Conference, vol. 1354, Jun. 11-14, 1990, pp. 316-323.

Affiliated with

Also associated with

Rating

Diffraction optical device and optical system including same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Diffraction optical device and optical system including same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diffraction optical device and optical system including same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3560669