SU974321A1

SU974321A1 - Galilean telescope optical system

Info

Publication number: SU974321A1
Application number: SU772553752A
Authority: SU
Inventors: Михаил Михайлович Русинов; Галина Николаевна Юдова; Юрий Владимирович Кудряшов; Петр Яковлевич Агурок
Original assignee: Ленинградский Институт Точной Механики И Оптики
Priority date: 1977-12-12
Filing date: 1977-12-12
Publication date: 1982-11-15

Description

1one

.Изобретение относитс к оптическому приборостроению, к телескопическим системам малого увеличени , используетс в промышленности дл изготовлени театральных биноклей, биноклей-очков.The invention relates to optical instrument making, to small-scale telescopic systems, used in industry for the production of theater binoculars, binocular glasses.

Известны широкоугольные галилеевс кие системы 1 ,Known wide-angle Galilean systems 1,

Однако галилеевские системы обладают недостаточным углом пол зрени , кроме того, компоненты системы представл ют собой толстые линзы больших диаметров, что существенно увеличивает вес прибора.However, Galilean systems have an insufficient field of view, in addition, the components of the system are thick lenses of large diameters, which significantly increases the weight of the device.

Наиболее близкой по технической сущности к изобретению вл етс телескопическа галилеевска оптическа система, содержаща три компонента , из которых первый - положительный одиночный мениск, а третий концентрический мениск, причем оба мениска обращены вогнутостью к диафрагме 2.The closest to the technical essence of the invention is a telescopic Galilean optical system containing three components, of which the first is a positive single meniscus and the third is a concentric meniscus, both meniscus with a concavity facing the diaphragm 2.

Однако известна система обладает недостаточно большим углом пол зрени , кроме того, в схеме использованы т желые стекла с показател ми преломлени 1,7 линзы имеют большие диаметры и толщины, что существенно увеличивает вес прибора.However, the known system has an insufficiently large field of view, in addition, the scheme uses heavy glasses with a refractive index of 1.7 lenses have large diameters and thicknesses, which significantly increases the weight of the device.

Цель изобретени - увеличение угла пол зрени и уменьшение габари10 ТОО системы.The purpose of the invention is to increase the angle of field of view and decrease the size of the LLP system.

Указанна цель достигаетс тем, что в телескопической галилеевской оптической системе, содержащей три компонента, из которых первый - полоis жительный одиночный мениск, а третий - концентрический мениск, причем оба мениска обращены вогнутостью к диафрагме, второй компонент выполнен в виде одиночного положительного 20 мениска., обращенного вогнутостью к диафрагме.This goal is achieved by the fact that in a telescopic Galilean optical system containing three components, of which the first is a positive single meniscus, and the third is a concentric meniscus, both meniscus with a concavity facing the diaphragm, the second component is designed as a single positive 20 meniscus. facing concavity to the diaphragm.

Claims

The drawing shows the optical layout of the lens. 39 The lens consists of three components 1–3, and components 1 and 2 are positive menisci, whose convex surfaces have an optical power exceeding the optical power of the entire component, therefore, are force; the concave surfaces of menisci 1 and 2 are corrective, and component 3 is a xoncentric meniscus. To correct spherical aberration and lens coma, components 1 and 2 are in the form of a positive meniscus. The concave surfaces of components 1 and 2 correct astigmatism. Component 3 serves to correct the curvature of the visual field, since its surfaces are concentric with the exit pupil k. To correct the chromatism of the increase, a chromatic radius (not shown) can be entered into the system in component 3. The use of anastigmatic lenses in the system, as well as the use of glasses with a refractive index of 1.61, distinguishes the proposed system from the known ones, as it increases the field of view by 25% , reduce the weight of optical parts by about 5 times, as a result of which the scope of application of the system is expanded, in particular, it can be used as binocular glasses. Claims of the invention A telescopic Galilean optical system comprising three components, of which the first is a positive single meniscus and the third is a concentric meniscus, both of which are concavity facing the diaphragm, in order to increase the field angle and reduce the size of the system, the second component is made in the form of a single positive meniscus with a concavity facing the diaphragm. Sources of information taken into account in the examination 1. USSR author's certificate Vf 175270, cl. G 02 B 23/00, TEB.

2. USSR author's certificate No. 201716, cl. G 03 23/02, 1966 (prototype).