Imaging lens

Details Imaging lens Imaging lens

2007-10-25

2009-10-06

Harrington, Alicia M (Department: 2873)

Optical: systems and elements

Lens

With multipart element

Reexamination Certificate

active

07599128

ABSTRACT:
An imaging lens is provided, whose lens characteristics can be switched between e.g. normal imaging and close-up imaging without requiring mechanically movable mechanism or attachment/removal of another lens. Switching of lens function is realized by combining a liquid crystal diffraction lens and a refractive lens and applying a voltage to a liquid crystal layer of the liquid crystal lens. The liquid crystal lens is constituted by two liquid crystal lenses that are laminated together so that their polarization directions producing lens functions are perpendicular to each other, which suppresses chromatic aberration and achieves good imaging characteristics by appropriately selecting focal lengths and Abbe numbers.

REFERENCES:
patent: 6166784 (2000-12-01), Murata et al.
patent: 6882482 (2005-04-01), Ogasawara
patent: 2007/0127348 (2007-06-01), Ooi et al.
patent: 62-170934 (1987-07-01), None
patent: 2-289806 (1990-11-01), None
patent: 9-230300 (1997-05-01), None
patent: 10-73758 (1998-03-01), None
patent: 10-104491 (1998-04-01), None
patent: 2002-357804 (2002-12-01), None
patent: 3094156 (2003-03-01), None

Affiliated with

Also associated with

Rating

Imaging lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4070187