Optical element, lens and optical head device

Details Optical element, lens and optical head device Optical element, lens and optical head device

2006-11-21

2006-11-21

Amari, Alessandro (Department: 2872)

Optical: systems and elements

Diffraction

From grating

C369S112030

Reexamination Certificate

active

07139126

ABSTRACT:
An optical element includes a diffraction grating by which both a first laser beam and a second laser beam are diffracted. A diffraction performance of the diffraction grating is expressed by an optical path difference function, a third spherical aberration SA31of the first laser beam and a third spherical aberration SA32of the second laser beam in a wave front aberration calculated by the optical path difference function satisfy the following conditional expressions:in-line-formulae description="In-line Formulae" end="lead"?0.005<|SA31−SA32|<0.015[λrms]in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?SA31×SA32<0.in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 6728042 (2004-04-01), Ota et al.
patent: 6898168 (2005-05-01), Kimura et al.
patent: 2000-081566 (2000-03-01), None

Affiliated with

Also associated with

Rating

Optical element, lens and optical head device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3641862