WIDE-ANGLE OBJECTIVE WITH LARGE LENS APERTURE Russian patent published in 2009 - IPC G02B9/64 

FIELD: physics; optics.

SUBSTANCE: objective contains seven optical components and aperture diaphragm located between fifth and sixth components. First component - positive, second - subzero, executed in the form of meniscus converted by incurvation to image. Third - subzero, and fourth - subzero also is conglutinated from biconcave and convexo-convex lenses. Fifth is executed in the form of convexo-convex lens. Sixth is executed in the form of single biconcave lens. Seventh is made in the form of the plus meniscus converted by incurvation to the object. After the seventh component the eighth component executed in the form of convexo-convex lens, ninth component - positive and conglutinated of the subzero meniscus converted by incurvation to image, and the plus lens, tenth builder executed in the form of the subzero meniscus, converted by protuberance to the image, and the eleventh component executed plus and conglutinated from convexo-convex and biconcave lenses are in addition entered.

EFFECT: increase of angular field of vision of objective, angular aperture magnification, improvement of image quality.

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