Diffractive optical element and method for manufacturing same

Details Diffractive optical element and method for manufacturing same Diffractive optical element and method for manufacturing same

2006-08-10

2009-06-30

Chang, Audrey Y (Department: 2872)

Optical: systems and elements

Diffraction

From grating

C359S569000, C359S571000, C359S566000

Reexamination Certificate

active

07554733

ABSTRACT:
A diffractive optical element includes at least a first diffractive element and a second diffractive element. The conditional expression 0.5≦D/DS≦0.9 is preferably satisfied where DS denotes the summation of the optimum designed groove height of the first diffractive element d1S and that of the second diffractive element d2S, and D denotes the summation of an actual groove height of the first diffractive element d1and that of the second diffractive element d2. At least one of the first diffractive element and the second diffractive element is made of glass. At least one of the first diffractive element and the second diffractive element is made of resin. The optimum designed value of groove heights of the diffractive optical element are determined so as to satisfy a condition for correcting chromatic aberration at both d-line and g-line.

REFERENCES:
patent: 4436398 (1984-03-01), Endo et al.
patent: 5734502 (1998-03-01), Ebstein
patent: 5847877 (1998-12-01), Imamura et al.
patent: 6157488 (2000-12-01), Ishii
patent: 6330109 (2001-12-01), Ishii
patent: 6330110 (2001-12-01), Nakai
patent: 6392805 (2002-05-01), Ohmori
patent: 6528005 (2003-03-01), Amagai et al.
patent: 6693744 (2004-02-01), Shimomura
patent: 7042642 (2006-05-01), Tokoyoda et al.
patent: 2001/0015848 (2001-08-01), Nakai
patent: 2001/0036012 (2001-11-01), Nakai et al.
patent: 2001/0038503 (2001-11-01), Nakai
patent: 11-271513 (1999-10-01), None
patent: 2001-249208 (2001-09-01), None

Affiliated with

Also associated with

Rating

Diffractive optical element and method for manufacturing 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 Diffractive optical element and method for manufacturing same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diffractive optical element and method for manufacturing same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4109427