Laminated diffraction optical element

Optical: systems and elements – Diffraction – From grating

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C359S569000, C359S566000

Reexamination Certificate

active

07663803

ABSTRACT:
A multi-layered diffraction optical element, comprises a transparent substrate, a first layer having a diffraction grating shape at least on one face and comprised of a relatively high refractive index and low dispersion material, and a second layer having a diffraction grating shape at least on one face and comprised of a relatively low refractive index and high dispersion material, wherein the first and second layers are laminated on the transparent substrate so that the respective diffraction grating shapes are mutually opposed to each other with no space therebetween, and, the first layer is comprised of a first organic resin including a first inorganic fine particle, and the second layer is comprised of a second organic resin including a second inorganic fine particle different from the first inorganic fine particle.

REFERENCES:
patent: 5847877 (1998-12-01), Imamura et al.
patent: 6394613 (2002-05-01), Hatakeyama et al.
patent: 6759471 (2004-07-01), Ukuda
patent: 6870677 (2005-03-01), Ohgane
patent: 6912092 (2005-06-01), Ukuda
patent: 7031078 (2006-04-01), Ukuda
patent: 7046445 (2006-05-01), Ukuda
patent: 7286293 (2007-10-01), Tanaka
patent: 7554733 (2009-06-01), Tokoyoda
patent: 2009/0052040 (2009-02-01), Suzuki et al.
patent: 0 895 100 (1999-02-01), None
patent: 1 065 531 (2001-01-01), None
patent: 1 591 806 (2005-11-01), None
patent: WO 2006/090614 (2006-08-01), None
A.D. Kathman and S.K. Pitalo, “Binary Optics in Lens Design,” International Lens Design Conference, Spie vol. 1354, Jun. 1990, pp. 297-309.
May 26, 2008 European Search Report in European Patent Appln. No. 08000662.0.
Jul. 10, 2009 Chinese Official Action in Chinese Patent Appln. No. 200810005146.X (with translation).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Laminated diffraction optical element does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Laminated diffraction optical element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laminated diffraction optical element will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4167071

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.