SU1432441A1 - Binocularls - Google Patents

Abstract

FIELD: optical instrumentation; used to create high magnification binoculars and telescopes. The purpose of the invention is to simplify the design. A lens made of a double-convex lens 1 and a negative meniscus 3 facing in with an object's concavity creates an image in the plane of the field diaphragm. The image is viewed with the help of an ocular of three components, the first of which is a positive meniscus 5 facing the concavity towards the object, the second component 6 is a positive dual background, the third is a positive meniscus 7 facing the concavity of the image. The radii of the convex surfaces of components 5 and 6 are equal, the radii of the concave outer surfaces of components 6 and 7 are equal in absolute value. The guiding system 4 of two prisms provides a direct image. 1 or.g

Description

SL C

Tsiafragma nojjfl era not;)

Retinal pupil

00

Yu

4ib 4

567

The invention relates to an optical instrument, namely, to devices for remote objects that work with the eye, in particular to binoculars, and can be

used in the optic tubes pain. - ("of that increase.

Purpose of the invention. -; simplified design of binoculars. ,

The drawing shows a basic optical scheme of binoculars.

Binoculars contain a lens made of a single positive double-lens lens 1, located behind it an aperture diaphragm 2 located at a distance of 0.05-0.2 of the focal length, the lens from lens 1, and a single negative meniscus facing the object 3, The wrapping system 4 is made prism. The three components of the ocular are positive menisci, the first of which 5 is a single concavity facing the object, the second 6 is glued from a two-bent negative and two-convex positive lenses with a radius of curvature of its convex, eye-facing surface, an equal radius of curvature of the convex surface meniscus 5, third 7 - with the radius of curvature of the concave surface facing the eye, equal in absolute value to the radius of curvature of the concave surface of the component 6 facing the object.

Binoculars has the following main characteristics:

Zoom field of view

20

zz

,

ten

15 20 25 30 5

0

Output diameter

pupil3 mm

Deleting output

pupil 11 mm

Optical length

systems 176.25 mm

The image quality produced by binoculars is characterized by: spherical aberration 1, position 3 chromatism, image correctness not more than 2.2 D, astigmatism not more than 10 D, distortion 10%, chromatism no more than 5.

Formula inventions

Binoculars containing a lens made of a two-convex lens and a negative meniscus, a prismatic reversing system and an ocular of three components, the first of which is a positive meniscus facing the object inwards, the second is a positive two-point, the other looking positive the image, characterized in that, in order to simplify the construction, the negative meniscus of the lens faces the object, the second component is glued in the eyepiece to two-curved and two-convex lenses, the radii of convex surfaces The dimensions of the first and second components are equal to each other, and the radii of the concave outer surfaces of the second and third components are equal in absolute value.

Claims (1)

Claim Binoculars containing a lens from a biconvex lens and a negative meniscus, a prism wrapping system and an eyepiece of three components, the first of which is a positive meniscus facing concavity to the object, the second is positive two-glued, the third is a positive meniscus facing concavity to the image, characterized in that, in order to simplify the design, the negative meniscus of the lens is turned concave to the object, in the eyepiece the second component is glued from biconcave and biconvex lenses, the radii of the convex surface The first and second components are equal to each other, and the radii of the concave outer surfaces of the second and third components are equal in absolute value.