SU724124A1

SU724124A1 - Endoscope objective

Info

Publication number: SU724124A1
Application number: SU782648488A
Authority: SU
Inventors: Анатолий Иванович Молев
Original assignee: Всесоюзный Научно-Исследовательский Институт Медицинского Приборостроения
Priority date: 1978-07-24
Filing date: 1978-07-24
Publication date: 1980-03-30

Description

1one

Изобретение от;носит1с ж медицинской технике, а иманмо к о бъектйвам эндоокопав , и щайдет ррименеине в эндоскопах дл осмОтра и ,фотагр1афи,ро1ва:ни .различных полостей и биологических -ка алов тела человека, а тайже дл осмотра каналов в технических у,строй1сгвах.The invention is from; it carries medical technology, and Imanmo is endocoped with objects, and can find the use of endoscopes for osmotras and photomaps, pov: no various cavities and biological tissues of the human body, and the same for inspecting canals in technical equipment, stroy1sgwh .

Известен абъектив эндоскапа, содержащий головную призму, плосковьйтуклуюKnown endoscale abjective lens containing the head prism, flat light

линзу дво ковыпуклый компонент, 1ВЫполгнеиный IB (ВИде склейки 1. The lens is a double-convex component, 1B-half-luminous IB (VI. Splice 1.

Нед оста TiKOiM иэвесиного эндоскопа вл етс то, что поле зрени объектива мало, кроме того «аличи в объективе только кОМпонентов, обладающих положительнюй аптичеакюй силой, поверхность изображенй существенно иакривлена, что (Приводит к Снижению качест1за изображени , особенно то краю лол зрени из-за низ1кой разрешак Щей способности. The week of the TiKOiM and the weighing endoscope is that the field of view of the lens is small, moreover, the difference in the lens is only for components having a positive aptica force, the surface is depicted substantially and that (Leads to the image quality, especially the edge is visible because of low resolution

Целью изобретени вл етс з величение пол зрени и уменьшение кривизны изображени .The aim of the invention is to magnify the field of view and reduce the curvature of the image.

Поставленна цель достигаетс тем, что объектов ана|бжен рааположенным 1перед .голо(вной П1рйзм;ой тлоокапараллельным склеенным компонентам, состо щим, й плоаковюг1Н утой и вьшуклоплоокой, линз, разность показателей преломлени стекол которых не менее 0,15, при этом дво ковыиуклый .компонент состоит из положительной и отрицателыной линз, выполненных из стекол, разность дисперсий которых составл ет не менее 20, причем толщина по оси дво жовыпуклогб компонента составл ет (1,2-5) /, а Поверхность склейки Д1в1о ковьту;клого компонента находитс на рассто нии (iO,05-н1,5) / от плосковьшуклой линзы, лде / - фокусное ра1ссто ние объектива .The goal is achieved by the fact that the objects are compared to 1 piled front (clear Pryrism; oh parallel-glued components that are glued together, lens, the difference in the refractive indices of the glasses is not less than 0.15, while the duplicate glass is not less than 0.15). the component consists of positive and negative lenses made of glass, the dispersion difference of which is not less than 20, and the thickness along the axis of the doubled convex component is (1.2-5) /, and the bonding surface is D1v1o kovyu; at a distance (iO, 05-n1.5) / from a flat-constricted lens, lde / is the focal length of the lens.

На чертеже представлена оптическа схе-ма объектива эндоакопа.The drawing shows the optical scheme of the endoscopic lens.

Объектив содержит головную призму /, плоюковьгпуклую одиночную линзу 2 и .д во ковьшуклый компонент 3, состо щий из положителыной линзы 4 и отрицательной линзы 5. Поверхность склейки линз 4 и 5 находитс на рассто нии (0,05-1,5) f от л-инзы 2, а толщи1на .по оси компонента 3 составл ет (1,2-5) / от фокусного рассто ни объектива. Линзы 4 и 5 вьшолнены из стекол, разность дисперсий которых составЛ . ет не менее 20.The lens contains a head prism /, a flat-tangled single lens 2 and .d in a dome-shaped component 3 consisting of a positive lens 4 and a negative lens 5. The gluing surface of lenses 4 and 5 is at a distance of (0.05-1.5) f from The l-incons 2, and the thickness along the axis of the component 3 is (1.2-5) / from the focal length of the lens. Lenses 4 and 5 are made of glass, the difference in dispersions of which is made up. em no less than 20.

Перед П|ризмой / установлен плоскопаралле .льный склее.нньш компонент. 6, с осто щий из плосковопнутой.линзы 7 и выпукл аплоской линзы 8, разности цоказателей преломлени стекол которых не менее 0,1;5.A plane-parallel splicing is installed in front of the parasol / plane. 6, consisting of a flat lens 7 and a convex lens 8, the difference between the refractive indexes of the glasses being at least 0.1; 5.

Claims

Claim ,

An endoscope lens containing V-V, 'OBZhtSh eZhShZhbp'.t by entering “^ -' 'Щггх ....... in its -component components forms

..... thumbnail objects located 'inside study' cavity on: ^r input end glass-fiber bundle, which will be applied ...... lens. '. J-7

Since the plane-parallel component 6 has negative optical power, it bends the rays coming from the external prism, a plano-convex lens, and a biconvex component made in a gluing unit, which means that “” ^ Ti'SMtneHcnpyeTiCH the curvature of the field is shown in order to increase the field of view and to reduce the curvature of the image introduced by lens 2 and the double-glazed 15 ', it is equipped with the ό' component. which leads to improvement

... .quality .images. '' “‘ L '

At the same time, the greater the ...... difference in the performance of the lenses breaking through the lenses is 7 and 8, the greater is the curvature * and the curvature of a. fig. 4 and 5 and what is the reason for gluing lenses 4 and 5 to lens 2 ,. TFY / 'easier. ~ ^^^ 0TraZh1ёtsya ^; the 'chromatic' tuberration '''•“'u'woeljenip'and, therefore, the Mönchbach have the higher causes of these aberrations. . . - Moreover, the bonding surface of the lenses 4 and

5, 1ТМёВДа`я'7 'negative 7' optical power, helps to eliminate aberration ~ · 'astigmatism. '. ' ^r ... 7. '' of the axial points of the object, - to the optical smallpox So that they freely pass through the head prism I- PRI et & simultaneously located in front of the head prism • a plane-parallel glued component consisting of a flat-bent ry _g . convex lenses, the difference in the refractive indices of the glasses of which is not less than 0.15, while the biconvex component consists of positive and negative 'Lenses made of glasses, the dispersion difference of which is not less than 20, and the thickness along the axis ^{1 of the} biconvex component is (1, 2-5) f, and the gluing surface of the biconvex component is at a distance of (0.05-1.5) f from the plano-convex lens, where f is the focal length of the 30 lens. . ..

In addition, the ratio between the axial ....... ^x 'of the length of component 3 and the magnitude of the focal length of the lens, equal to (1.2-5) /, diameters. The telecentre's lens provides a small amount of light.

Sourse of information, . taken into account during the examination:

1. The application of Germany No. 2430148,. class G 02 B 35 23/02, published. 1975.

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