Patent ID: 6330115
Filing Date: 2001-12-11
Classification: G02B

Abstract:
Microscope eyepiece with 10.times. magnification, a field of view number FVN.ltoreq.25 and a field stop (3), in which there is provided in front of the field stop (3) in the direction of light a field lens (L.sub.1) and behind the field stop (3) a negative lens (L.sub.2, L.sub.2 '), as the first lens of an eye lens part (AL) which can be displaced in relation to the field stop (3) for dioptric setting, characterized in thata) the field lens (L.sub.1) is designed in the form of a simple thick meniscus, convex with respect to the field stop (3), with a positive refractive power,b) the field lens (L.sub.1) has a field lens factor beta' with 0.95.ltoreq.beta'.ltoreq.1.05 andc) the eyepiece has a Petzval sum SP with 0.014.ltoreq.SP.ltoreq.0.021.