MICROOBJECTIVE LENS WITH INCREASED WORKING DISTANCE

摘要

optics. SUBSTANCE: microobjective lens includes five components placed in sequence along optical axis. First component comprises two positive single lenses and one lens cemented together from negative and positive lenses. Second positive component comes in the form of single biconvex lens. Third component is cemented together from positive and negative lenses. Fourth negative component is cemented together from positive and negative lenses. Additional fifth negative component comprises meniscus-shaped lens facing space of objects with concavity and biconvex lens cemented together. EFFECT: potential for correction of monochromatic and chromatic aberrations with increase of working distance. 1 dwg