OBJECTIVE Russian patent published in 2005 - IPC

FIELD: optics.

SUBSTANCE: device has positive component including biconvex lens and negative lens in form of meniscus, on the side of object, and negative component, in form of meniscus, on the side of image. Onto one of optical surfaces of positive component lenses a hologram optical element is applied having optical force 0.01-0.1 of total objective force, while characteristic equation of hologram optical element is V_H=A₁y²+A₃y⁶+A₃y⁶, where A₁, A₂, A₃ - coefficients; y - height on surface of hologram optical element. Coefficient A₁ is proportional to optical force of hologram optical element, and coefficients A₂ and A₃, respectively, are proportional to spherical aberration of positive and negative objective components. Negative component on the side of image is directed to it by convex portion. Negative lens of positive component is placed between biconvex lens and object and is directed to object by convex portion. Objective is also equipped with additional component in form of biconvex lens, placed between negative and positive components.

EFFECT: higher efficiency, higher image quality.

5 cl, 2 dwg