Optical imaging systems and methods using polarized...

Details Optical imaging systems and methods using polarized... Optical imaging systems and methods using polarized...

2005-11-15

2005-11-15

Epps, Georgia (Department: 2873)

Optical: systems and elements

Lens

With light limiting or controlling means

C355S071000

Reexamination Certificate

active

06965484

ABSTRACT:
Optical imaging systems and methods use polarized illumination and a coordinated pupil filter to achieve high contrast. An imaging system includes a light source to generate light for illuminating an object having features aligned in a first direction and features aligned in a second direction, a lens for imaging the illuminated object onto a surface, a spatial selection device, such as a pupil filter, selective in a first mode of light corresponding to features of the illuminated object aligned in the first direction and selective in a second mode of light corresponding to features of the illuminated object aligned in a second direction, a polarization device optically coupled to the spatial selection device and selective in the first mode of s-polarized light corresponding to the first direction and selective in the second mode of s-polarized light corresponding to the second direction, and a controller for selecting operation in the first mode or in the second mode.

REFERENCES:
patent: 5442184 (1995-08-01), Palmer et al.
patent: 5541026 (1996-07-01), Matsumoto
patent: 5673103 (1997-09-01), Inoue et al.
patent: 5739898 (1998-04-01), Ozawa et al.
patent: 5933219 (1999-08-01), Unno
patent: 07 142338 (1995-06-01), None

Affiliated with

Also associated with

Rating

Optical imaging systems and methods using polarized... 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 imaging systems and methods using polarized..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical imaging systems and methods using polarized... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3453966