FIELD: optics. SUBSTANCE: immersion-free achromatic microlens includes four components. First component is manufactured in the form of positive meniscus-shaped or plano-convex lens facing image with convexity, second component is double-layer component formed by negative and positive lenses, third component is positive component formed by positive lens confined between two negative lenses and fourth component is negative meniscus facing image with concavity. Positive lenses of microlens are produced from material displaying dispersion factor over 49 and distance between third and fourth component reaches 4.7-9.2 focal distance of microlens. EFFECT: enlarged aperture and raised resolution of microlens, improved quality of image. 1 dwg
