SU1283690A1

SU1283690A1 - Reproduction lens

Info

Publication number: SU1283690A1
Application number: SU853874293A
Authority: SU
Inventors: Евгений Николаевич Гончаренко; Вера Серафимовна Кадыкова; Надежда Ивановна Каспарова
Original assignee: Предприятие П/Я Р-6681
Priority date: 1985-03-26
Filing date: 1985-03-26
Publication date: 1987-01-15

Abstract

Изобретение относитс к оптическому приборостроению. Дл повышени качества изображени в niipCKoM спектральном диапазоне линзы (Л) 3 и 5 выполнены в виде менисков, о б- ращенных вогнутостью к диафрагме 9,. Л 4 вл етс положительной, а Л 6 - дво ковогнутой. Фокусные рассто ни Л 3 и Л 4 составл ют соответственно, 0,42483 и 0,7762 фокусного рассто ни объектива, а рассто ни между Л 2 и Л 3 и между Л 6 и Л 7 составл ют соответственно 0,0541 и 0,02432 фокусного рассто ни объектива. Объектив обладает высоким качеством изображени как дл точки на оси, так и, по полю зрени . Фокусное рассто ние объектива 74 мм, относительное отверстие 1:255, поле зрени I3 30 . 1 ил.This invention relates to an optical instrument. In order to improve the image quality in the niipCKoM spectral range, lenses (L) 3 and 5 are made in the form of meniscuses, which are concave towards the diaphragm 9 ,. L 4 is positive, and L 6 is double-concave. The focal lengths of L 3 and L 4 are respectively 0.42483 and 0.7762 of the focal length of the lens, and the distances between L 2 and L 3 and between L 6 and L 7 are 0.0541 and 0.02432, respectively. lens focal length. The lens has a high image quality for both the point on the axis and the field of view. The focal length of the lens is 74 mm, the relative aperture is 1: 255, the field of view is I3 30. 1 il.

Description

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Редактор М,БандураEditor M, Pandora

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Составитель В,Архипов Техред К.КадарCompiled by, Tehred Arkhipov K. Kadar

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Claims

Invention Formula

A reproduction lens containing eight single lenses and located between the fourth and fifth

lenses aperture diaphragm, when-. the first lens is positive, the second is a positive meniscus facing its concavity towards the diaphragm, a third is negative, a quarter 20

five

the meniscus facing the concavity toward the diaphragm, the fifth and the pole are negative, the seventh and eighth are two convex, differing in that, in order to improve the image quality in a wide spectral range, the first, third and fifth lenses are made in the form of meniscuses facing the concavity towards the diaphragm ,

The fourth is positive, the pole is double folded, and the focal lengths of the third and fourth lenses are respectively 0.42483 and. 0.7762 lens focal length, and the distance between the second and third and between the sixth and seventh lenses are respectively 0.0541 and 0.02432 of the lens focal length, t

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Editor M, Pandora

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Compiled by, Tehred Arkhipov K. Kadar

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Corrector C, Shekmar

Order 7435/44. Circulation 522Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab ,, d, 4/5

Production and printing, enterprise, Uzhgorod, st. Project, 4