Patent ID: 6104553
Filing Date: 2000-08-15
Classification: G02B

Abstract:
An image-forming lens consisting of no more than two lens elements, as follows, in order from the object side:a first lens element of negative refractive power and a meniscus shape, with its convex surface on the object side; anda second lens element of positive refractive power and a biconvex shape;said image-forming lens satisfying the following conditions-1.4.ltoreq.f.sub.1 /f.ltoreq.-1.10.55.ltoreq.D.sub.1 /f.ltoreq.1.2where f.sub.1 is the focal distance of the first lens element, f is the focal distance of the image-forming lens, and D.sub.1 is the on-axis thickness of the first lens element.