Lens for reading original

Details Lens for reading original Lens for reading original

1991-08-19

1992-10-06

Howell, Janice A.

Optical: systems and elements

Lens

Multiple component lenses

359763, G02B 934

Patent

active

051537796

ABSTRACT:
A lens for reading an original has first to fifth lens groups sequentially arranged from an object side of a lens system to an image side thereof. The first lens group is constructed by a first lens composed of a negative meniscus lens having a convex face directed on the object side. The second lens group is constructed by a second lens composed of a positive lens. The third lens group is constructed by a third lens composed of a biconcave lens. The fourth lens group is constructed by a fourth lens composed of a positive lens. The fifth lens group is constructed by a fifth lens composed of a positive meniscus lens having a convex face directed on the object side. A combined focal length f of the entire lens system, a focal length f.sub.1 of the first lens group, and a combined focal length f.sub.24 of the second to fourth lens groups satisfy the following conditions.

Affiliated with

Also associated with

Rating

Lens for reading original does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1194865