SU1278774A1 - Binocular stereoscopic magnifier - Google Patents

Abstract

The invention can be used to correct the vision of the visually impaired. In order to increase the linear field of view, the lens of each of the two micro I I pupils I 1 of the roscopes 1, 2 contains flat-convex lenses 3j 4, convex facing each other, and positive menisci 5, 6, convex facing the subject. The location of the lenses 3, 4 parallel to the plane of the object makes it possible to obtain the same image depth over the field of view. An intermediate image of the object is created in the back focal plane of the menisci 5, 6, coinciding with the anterior focal plane of the eyelet 7, made in the form of glued positive 8 and negative 9 menisci from materials whose refractive index difference is not less than 0.05, and the difference of dispersion coefficients is not less than 10. Binocular stereoscopic magnifying glass has good aberration correction. 1 il. O) 00 p1 Plane npedffemoB L

Description

The invention relates to optical instrument making, namely, to binocular stereoscopic loupes and microscopes, and can be applied in vision correction for the visually impaired.

The aim of the invention is to increase the linear field of view.

The drawing shows a basic optical scheme of a binocular - tO stereoscopic magnifier.

A stereoscopic binocular loupe consists of two microscopes 1 and 2 whose optical axes are inclined towards each other at an acute angle. The object is located at the point A of the convergence of the axes.

Each microscope contains a lens of two flat-convex lenses Z. and 4, convex to each other, and positive menisci 5 and 6, obliquely spaced towards the space. images. The eyepiece p 7 is made in the form of a negative lens, facing a concavity towards the exit pupil of the microscope glued from a positive 8 and. negative 9 menisci made respectively of crown and flint glass.

A binocular stereoscopic loupe serves to view objects at a finite distance and provides an magnification on the retina of the image. wives of the subjects in question.

The plane of the object passes through the point of intersection of the optical axes 35 of the microscopes and is located perpendicular to the bisector of the angle between the optical axes of the microscopes.

Stereoscopic magnifier works as follows .40

The plane of the object is located in the focal plane of two flat-convex lenses 3 and 4 of each microscope, therefore after them the image of the device

peaking magnifier. In the focal plane of the lens, an imaginary direct magnified image of the object is obtained, which is viewed by an ocular 7.

The exit pupil of a binocular stereoscopic magnifying glass is located at a distance of 9.0 mm. The pupil of the observer's eye is combined with the exit pupil of a magnifying glass.

As an example of a specific embodiment, a binocular stereoscopic magnifier with the following main characteristics was calculated; magnification x 5.5, linear field size 2U 60 mm, exit pupil diameter 4 mm, exit pupil removal 9 mm, distance to the object 125 mm, the length of the optical system of each microscope along the optical axis 50 mm.

In the above version of the calculation. For each microscope, the spherical aberration does not exceed 3.

For Kra Paul L. 2.58; Lg -0.57 mm, for zone C 1.23, Lg 0.27 mm.

Chromatism of position no more than 0.11 mm, magnification chromatism:

on

edge of floor 12, on zone 7

Claims (1)

Invention Formula A binocular stereoscopic magnifying glass containing two microscopes, the optical axes of which intersect with each other at an acute angle, each of the microscopes containing an objective and an ocular, which in order to increase the linear field of view, in each of the microscopes the objective is made of two flat-tilted lenses convex to each other, and two positive menisci facing in with a concavity towards the object, an eye-beam is made in the form of fading away to infinity. Then, a parallel 45-meniscus, reversed by the volley beam of rays after two positive menisci 5 and 6, creates an intermediate image in their back focal plane, which coincides with the front focal plane of the negative ocular 7. Lenses 3, 4, 5, and 6 are binocular stereo lens. Order 6833/44 Circulation 501 Subscription Will produce V.-polygraph, pre-e, g. Uzhgo-genus, st. Project, 4 peaking magnifier. In the focal plane of the lens, an imaginary direct magnified image of the object is obtained, which is viewed by an ocular 7. The exit pupil of a binocular stereoscopic magnifying glass is located at a distance of 9.0 mm. The pupil of the observer's eye is combined with the exit pupil of a magnifying glass. As an example of a specific embodiment, a binocular stereoscopic magnifier with the following main characteristics was calculated; magnification x 5.5, linear field size 2U 60 mm, exit pupil diameter 4 mm, exit pupil removal 9 mm, distance to the object 125 mm, the length of the optical system of each microscope along the optical axis 50 mm. In the above version of the calculation. For each microscope, the spherical aberration does not exceed 3. For Kra Paul L. 2.58; Lg -0.57 mm, for zone C 1.23, Lg 0.27 mm. Chromatism of position no more than 0.11 mm, magnification chromatism: on edge of floor 12, on zone 7 Invention Formula A binocular stereoscopic magnifying glass containing two microscopes, the optical axes of which intersect with each other at an acute angle, each of the microscopes containing an objective and an ocular, which in order to increase the linear field of view, in each of the microscopes the objective is made of two flat-tilted lenses that are convex to each other, and two positive meniscuses that are facing the concavity of the object, the eye-beam is made in the form of flexing to the image and glued together from positive and negative menisci znost. indicators of pre-; the breaking of materials of which is not less than 0.05, and the difference of the dispersion coefficients is not less than 10, while the axis of the plane is 1) Gh of the objective lenses are parallel to each other.