HIGH-MAGNIFICATION PLAN-APOCHROMATIC HIGH-APERTURE IMMERSION MICROLENS Russian patent published in 2015 - IPC G02B21/02 G02B9/64 

FIELD: physics.

SUBSTANCE: microlens comprises three components. The first component comprises a positive double-glued lens and a positive meniscus in the form of a single lens, which faces the object space with the concave surface. The second component consists of three positive lenses, the first of which is a single biconvex lens, the second is glued from a negative and a biconvex lens, the third is glued from a biconvex lens and a negative meniscus which faces the object space with the concave surface. The third component comprises two glued negative menisci, the first of which includes a positive meniscus and a negative meniscus, which face the image space with the concave surface, and the second is made of a positive meniscus and a negative meniscus, which face the object space with the concave surface.

EFFECT: larger linear image field, improved aberrations on the image field and eliminating chromatism of magnification.

1 dwg, 1 tbl