PLAN-APOCHROMATIC HIGH-APERTURE MICROLENS WITH LONG OPERATING DISTANCE Russian patent published in 2013 - IPC G02B21/02 G02B9/64 G02B11/34 

FIELD: physics.

SUBSTANCE: microlens has five components arranged in series, the first of which is in form of a meniscus whose concave surface faces the object space. The second positive component is made from a glued biconvex lens and a negative meniscus whose concave surface faces the object space; the third double-glued component is made from a negative meniscus facing the image space with its concave surface, and a biconvex lens, and the fifth component is made from a single biconcave lens and two menisci facing the object space with their concave surfaces. The dispersion coefficient ν_d of the positive lenses of the second and third components and the meniscus situated behind the biconcave lens in the fifth component ν_d≥70, and the negative meniscus of the glued lens of the third and component and the biconcave lens of the fifth component have the dispersion coefficient 42≤ν_d≤48.

EFFECT: longer operating distance to enable operation with cuvettes and manipulators, as well as high input numerical aperture while maintaining plan-apochromatic correction.

1 dwg, 1 app