SU570001A1

SU570001A1 - Microscope ocular

Info

Publication number: SU570001A1
Application number: SU7602344711A
Authority: SU
Inventors: Лев Николаевич Андреев; Ольга Васильевна Багдасарова
Original assignee: Предприятие П/Я Р-6681
Priority date: 1976-04-01
Filing date: 1976-04-01
Publication date: 1977-08-25

Description

(54) ОКУЛЯР МИКРОСКОПА(54) OCULAR MICROSCOPE

1one

Изобретение относитс к оптике, в частности к окул рам микроскопа и может быть использовано в современных микрюскопах различных назначений.The invention relates to optics, in particular to the eyebrows of a microscope, and can be used in modern micro-eyewear for various purposes.

Известны окул ры дл микроскопа, содер жащие тройной склеенный компонент и сто щую вплотную к некгу простую плосковыпуклую линзу, обращенную плоскостью к глазу l . Однако эти компенсационные окул ры с удовлетворительно исправленными полевыми аберраци ми и достаточно удаленным выходным зрачком имеют серьеэный Недостаток - непосто нство хроматизма увеличени по полю зрени . У объек тивов Же микроскопа хроматизм увеличени практически посто нен по полю. Несогласованность в исправлении хроматической разности увеличений приводит к возникновению окраски в поле зрени микроскопа, котора наблюдаетс уже в непосредственной бли- . зости от центра. The oculars for the microscope are known, which contain a triple glued component and stand close to a simple simple convex lens, facing the eye l with a plane. However, these compensating eyes with satisfactorily corrected field aberrations and a sufficiently distant exit pupil have a grayness. The disadvantage is the lack of chromatism of an increase in field of vision. In the same microscope's objects, the chromatism of magnification is almost constant over the field. Inconsistency in correcting the chromatic difference of magnifications leads to the appearance of color in the field of view of the microscope, which is already observed in the immediate vicinity. from the center.

Наиболее близким по технической сущ- . НОСТ7Л к предлагаемому изобретению вл етс объектив микроскопа, содержащий поло- жительные коллектив и глазной компонент, The closest to the technical noun. The NOST7L of the present invention is a microscope objective, containing a positive collective and an eye component,

между которыми расположена двухсклеепна положительна линза 2.between which there is a double-lens positive lens 2.

К недостаткам тшсой оптической системы можно отнести то, что сетка или шкала, расположенна в фокальной плоскости окул ра, имеет заметную окраску, вызванную хрома тизмом увеличени , устранить которую в данной оптической схеме прин1шт1апьно невозможно .The disadvantages of the optical system include the fact that the grid or scale, located in the focal plane of the ocular, has a noticeable color, caused by magnification chromatism, which cannot be eliminated in this optical design.

Недостатком такой схемы вл етс 7акже небольшое угловое поле зрени .; The disadvantage of this scheme is also a small angular field of view;

Цель изобретени - увеличение углового пол зрени с одновременным сохране1тем посто нства хроматизма увеличени .The purpose of the invention is to increase the angular field of view while maintaining the constant chromaticity of magnification.

Claims

To do this, in the eye of a microscope containing a positive team and an eye component, between which there is a double-glued positive lens, the team is made as a pinzel glued together from positive and negative lenses, while the difference between the refractive indices of the materials of the negative and the positive lenses does not exceed 0.03 and raznoet kef. Fipientov average dispersion does not exceed 20.. The drawing shows a schematic diagram of the ocular. The ocular is composed of collective 1, the ocular component 2, and the intergranular lens 3 located between them. Collective 1 contains positive 4 and positive 5 lenses. Lenses 4 and 5 are made of materials whose difference in the index of indices does not exceed 0.03, and the difference in the coefficients of the average dispersion does not exceed 2O. Bifurcated lens 3 consists of two pulses 6, 7f made of glass with a small difference in refractive indices for the average wavelength, but with a significant difference in the coefficients of the average dispersion. Ocular component 2 Consists of glued positive 8 and negative 9 lenses. The eyebrow of the described structure has significant advantages compared to the existing eyeglasses. Obtaining a chromatic difference of magnification of the order of 1.5-2% and the constancy of chromaticism of magnification over the field of view allows these oculars to be used together with strong achromates, apochromats and plano lenses. Increasing the angular field of view allows the use of a compensating eye in the present invention with new metallographic and biological microscopes. Claims of the invention: An ocular microscope containing a positive collective and an eye component, between which there is a double-glued pole lens, characterized in that, in order to improve chromatism correction and increase the field of view, the collective is made in the form of a lens glued together from a positive and negative lens, This is the difference between the refractive indices of materials of negative and positive lenses. It does not exceed 0.03, and the difference of the coefficients of the average dispersion does not exceed 2O. Sources of information taken into account in the examination: 1. Slyusarev G. G. Methods of calculation of optical systems. M., Mashinostroenie, 1969, p.

2. USSR Author's Certificate No. 28О916, cl. G-02 B 25 / OO, 1969.