SU993190A1 - Stereo microscope - Google Patents

Description

(54) STERIOMICROSCOPE

one

The invention relates to optical instrumentation and can be used to provide a wide range of small objects with an EMM increase.

The optical system of a magnifying lens, each branch of which is made from a positive meniscus of a dilated concavity) to an image of a two-glued lens, made up by e | g

lvna with optical powers of different signs and three single menisci. The illuminator itself is located at the binocular itself, giving a central beam of light, illuminating: Ü Operational field in the review npetn 15; Meta with the help of a binocular. Increase in the device (3.5-4.5); the subject length is (4-5) the focal length of the magnifying glass, 13.

A system of attachments to binoculars is known, containing two components, the prefix itself and the binocular attachment. The optical system, which turns the binoculars into a stereo microscope, is placed

on the holder, which is mounted on a shaft connected to binoculars. The additional optical system contains a positivist lens cap, as well as two reflection binoculars on each channel, angled to one another. Reflection edges, which are the first along the rays, shade the direction of convergence required for stereoscopic sp. The second, along the beam, the reflecting faces direct the ground beam, coinciding with the optical axis, into the corresponding channel of the binoculars. In order to focus on the distance between the lens attachment, the observed object can change the tension 2.

The disadvantages of such systems are a small field of view, a small working segment, and a high degree of fatigue of the observer due to strict fixed fixation of the head relative to a fixed weigher. 39 A stereomicroscope containing a fixed optical system and a binocular attachment consisting of two branches symmetrically located with respect to the median plane is known. 3 The disadvantages of the system are a small field of view, a microscope fixedly mounted relative to the subject plane, the binocular attachment is structurally rigidly connected to the main optical the system that witnesses the drying is when using the effect of the convection, the observer’s head is strictly fixed with respect to the unfixed pr ie by rapid fatigue occurs, which is a negative factor with prolonged use stereomikros cop. The purpose of the invention is to increase the field of view and the distance to the object of observation, as well as reduce the fatigue of the observer. The goal is achieved by the fact that a B stereo microscope containing a stationary optical system and a binocular nozzle consisting of two branches symmetrically located relative to the mid-plane, under the optical system consists of two successively arranged along the beam of the lens groups between which the prism is mounted, moreover, the front lens group is made in the form of a double-glue lens consisting of lenses with optical powers of different signs, the rear lens group is in the form of a telescopic system, the composition One of the three single lenses, of which two are flat-faced, and the center one is double chickpea, and the binocular attachment is mounted with the possibility of tilting relative to the optical axis of the fixed syotema, each branch of which is made of three optical blocks, the first of which a two-glue lens, a second prism system, the third one consists of a two-glue and a single flat-convex lens, equipped with a plane to the image, with a two-glue lens of each block consisting of negative and positive lenses. The drawing shows a microscopic optical optical circuit. The optical circuit contains a non-reference L and a mobile Uj component. Component L, consists of two consecutively arranged along the beam of the lens groups between which is installed the prism LS i and the front of the lens group C is made in the EGID of the double-glue lens, c (x; tapped from lenses with optical powers of different signs 1 and 2, the rear lens group in the form of a telescopic sisggema U is represented by three single lenses, the outermost of which are 3 and 4 are flat-convex, and the central 5 is double-curved. The movable component L2 contains three optical units L., t, Ug symmetrically located with respect to opt The main axis of the fixed component C, the first of which is L, is made in the form of two double-glued lenses made up of a negative meniscus b facing the concavity of the image and a convex-shaped lens 7. The second L is a prism system containing three prisms 8-10 of the object wrapping the image. The third L, g consists of two two-glued lenses, made up of double-concave 11 and double, convex 12 lenses and two flat-protruding lenses 13, facing the image to the image (exit pupil of the system). Component L, is installed with the possibility of tilting relative to the optical axis to the components i,. The distance between the inlets (nozzles of the nozzle is set to no more than half the diameter of the exit pupil of the stationary system, and the diameters of the entrance pupils of each branch do not exceed half the diameter of the exit pupil of the collimation magnifier, which allows to obtain the required pictures: images without cutting off the field of vision and vignetting of the light beams. So how the binocular attachment works in parallel beams, when it is tilted relative to the collimation magnifying glass, the defocus of the system is excluded. In its initial zero position at the minute minimum J floor The optical axes of the moving and stationary components are parallel. When the movable component is tilted relative to the optical axis of the original fixed system, strict observance of the parallelism of the optical axes is not required, and the field of view is artificially increased, governed by the field of view of the fixed component, which determines the maximum tilt angle of the movable component. component relative to the original position without cutting off the field of view. The redistribution of increases between the components of the scheme allowed us to achieve

Claims (1)

Claim A stereomicroscope containing a stationary optical system · and a binocular nozzle consisting of two branches symmetrically located relative to the median plane, characterized in that, in order to increase the field of view and distance to the object of observation, as well as reduce the fatigue of the observer, the stationary optical the system consists of two lens groups arranged in series along the beam, between which a prism is mounted, and the front lens group is made in the form of a double-glued lens, consisting of lenses with by bird forces of different signs, the rear lens group is in the form of a telescopic system consisting of three single lenses, the extreme of which are planar 5 convex, and the central one is biconcave, and the binocular nozzle is mounted with the possibility of tilting relative to the optical axis of the stationary system, each branch of which is made of three optical blocks, the first of which is a double-glued lens, the second is a prism system, the third consists of two, glued and single plano-convex lenses, the plane facing the image ^{is 5} , with than double-glued lenses of each block consist of negative and positive lenses.