Complex lens

Details Complex lens Complex lens

2007-11-27

2007-11-27

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

C359S664000, C359S708000

Reexamination Certificate

active

11288898

ABSTRACT:
An embodiment of a complex lens (1) includes a central substrate (10), two opposite glass layers (12), and two opposite IR-cut layers (13). The substrate is made of transparent plastic, such as polycarbonate or polymethyl methacrylate. The glass layers are deposited on opposite surfaces of the substrate. The IR-cut layers are deposited on surfaces of the glass layers. The substrate has a spherical or an aspheric surface. The IR-cut layers have a function of filtering infrared rays, thereby improving the image-forming quality of the complex lens. The substrate is typically made of polycarbonate or polymethyl methacrylate. The glass layers are typically made of ZrO2—Y2O3or SiC. Each IR-cut layer includes a plurality of films of Ti2O3and SiO2.

REFERENCES:
patent: 4052520 (1977-10-01), Chang et al.
patent: 4268134 (1981-05-01), Gulati et al.
patent: 5825549 (1998-10-01), Kawamata et al.
patent: 6250758 (2001-06-01), Yoshihara et al.
patent: 2005/0231812 (2005-10-01), Leu et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3823492