JPS6019120A - Optical system for opposed type discussion microscope - Google Patents

Abstract

PURPOSE:To make it possible that two observers observe the image of the same object simultaneously from eye points in the same level, by dividing the light from a focusing lens to two lights directed to different directions and forming object images due to individual divided lights in positions of the same level which are equally distant from the optical axis of the focusing lens. CONSTITUTION:An optical system including a dividing element 4, direction converting optical elements 5, 7, and 9, and relay lenses 6 and 8 is stored in a microscope body, and the light from the object which passes through a focusing lens is divided to the first and the second lights by the dividing element 4, and object images I1 and I2 due to these two lights are formed in positions of the same level which are equally distant from the optical axis of the focusing lens 3. Consequently, observers A1 and A2 can observe the same object image simultaneously from eye points in the same level in the state where they face each other with the microscope body between them.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a facing type discussion microscope that allows two TMM viewers facing each other to simultaneously observe the image of the same object.

A discussion microscope is constructed by taking multiple images of the same object and placing eyepiece lenses on each branched optical path. With this conventional microscope, the top and bottom of the image differ depending on the observation point.

Align the left and right sides and tell the observer! This is done to make the posture of the observed elephant constant and convenient for discussion (see Japanese Patent Application Laid-open No. 13-0511-1983), but such image adjustment is not possible with ordinary microscopic techniques. (t'ji.

Even if it is not a problem in our opinion, the entity class (1=i;:
In the case of work that requires observation, such as surgical fusuma micropods, this results in a marked deterioration of work efficiency.

In addition, in this type of conventional discussion microscope, the image posture is determined in consideration of workability.
Lesson 1: The observer's eye point (distance from the object to the observer's eye) varies depending on the observation point, and may be difficult for the observer.
As a result of forcing the worker to take a restful attitude, work efficiency was worsened.

Furthermore, with conventional discussion microscopes, images that can be observed by multiple observers are at the same magnification, and the images can be enlarged as appropriate during discussion or work. It was inconvenient for long distance work and detailed work. .

In view of the above-mentioned circumstances, an object of the present invention is to provide a face-to-face type which enables two observers facing each other to observe the image of the same object from the same height eye point at the same magnification or different magnifications. A complete discussion microscope is provided.

According to the present invention, an optical system for a dinucanozoyon microscope includes a light splitting element that splits light from an imaging lens into a first light beam and a second light beam directed in different directions; an optical element for directing the light in the same direction as the first light; a relay lens disposed in each optical path of the first light and the second light; and a direction changing optical element disposed in each optical path of the second light beam to direct each of the light beams in different directions.
This is achieved by arranging a variable magnification lens in at least one of the optical paths of the first light and second light split by the light splitting element.

This will be explained in detail below based on the illustrated embodiment. First, in FIGS. 1 to 3, M is the microscope body, 1.2 is the contact lens, 3 is the I-Sung lens, A... , A, l
[The observer, 4, passes through the imaging lens 3 / ζζ The first light goes in the optical axis direction of the imaging lens 3, and the second light goes in the direction perpendicular to 1''L. The light splitting elements 5 and 6 are arranged in the optical path of the first light, and the relay lens 7i (it) is arranged in the optical path of the second light. An optical element for directing the second light in substantially the same direction as the first light; 8 and 9 are relay lenses arranged in the optical path of the second light directed in substantially the same direction as the first light; It is a conversion optical element.In addition, the light splitting element 4 described in "2" and the direction conversion optical element 5, 7
9 and a relay lens 6.8 is housed in the microscope main body M, and the object images I, I2 formed by the first light and the second light are equidistant from the optical axis of the imaging lens 3. The optical elements are arranged so that they are formed at the same level of distance.

Since the first embodiment of the present invention is configured as described above, the light from the object passing through the imaging lens 3 is split into first and second lights by the light splitting element 4, and , Hexagram and I2
The images are respectively formed at the positions shown by 1. Therefore, observers A and A2 can simultaneously observe the same object image from eye points at the same height while facing each other with the microscope main body M in between.

FIG. 4 shows a second embodiment of the invention.

In this embodiment, lenses are placed in front and behind the light splitting element 4.
, ii, and 12 are arranged so that the magnification can be changed by a combination of these.

In this embodiment, considering the exit pupil position of the imaging lens 3 and the entrance pupil position of the eyepiece lens 1.2, if the irradiance of the imaging lens 3 is too close to the object, the A convex lens is used as the lens 10 as shown in FIG.
If the exit pupil of the imaging lens 3 is too similar to the object, a concave lens may be used as the lens 10, and a concave lens may be used as the lens 1.
If convex lenses 1 and 12 are used, deterioration of peripheral images due to pupil vignetting can also be prevented.

FIG. 5 shows a third embodiment of the invention. .

In this embodiment, suitable variable magnification lenses 13 and 14 are placed in the optical path of the second light split by the light splitting element 4,
A feature is that the imaging magnifications of the object images 11 and I2 are different from each other. That is, object +iI.

When increasing the magnification, use variable power lens 1 as shown in the figure.
3, a convex lens may be used as the variable power lens 14, a concave lens may be used as the variable power lens 14, and if the magnification of the object image I2 is to be reduced, a concave lens may be used as the variable power lens 13, and a convex lens may be used as the variable power lens 14. If you want to change the magnification of By appropriately replacing several magnification lenses or by arranging zoom lenses, it becomes possible to observe at various magnifications. Furthermore, it goes without saying that the range of application can be further expanded by combining the second embodiment and the third embodiment with f:m.

In each of the embodiments described above, object maintenance and
0. The direction of ν1j, that is, the direction of the image of the object to be observed, is
When viewed in the arrangement shown in FIG. 1, if the orientation of the object O is as shown in FIG. 6, then IJ < as shown in the same drawing is obtained. That is, although observer A1- can see an upright image of the object, observer A2 may end up leaning against an inverted image of the object, which may be inconvenient7.
In a fourth embodiment of the present invention, image rotation optical elements 15 and 16 are disposed in each optical path of the first light and the second light in order to avoid unnecessary costs. As the optical elements 15' and 16, Porro 11 elements are used, and by using them, the object images I, , l72
Fjr, as shown in Figure 8, both can be observed as erect images of the object O. Incidentally, in order to achieve this purpose, the direction conversion optical elements 5, 9 and the image rotation optical element 15.1 are required.
6 may be integrated and a roof prism may be used.
.

It goes without saying that the various embodiments described above can be used in appropriate combinations with each other. In addition, in the embodiment, the explanation was made assuming that the discussion microscope is for two people, but if the first light and/or the second light is further divided into two and the present invention is applied to this, it is possible to A human microscope system can be provided, all of which are included in the scope of the present invention.

As described above, according to the present invention, two observers facing each other can observe images in the same posture relative to the object from eye points at the same height, which is convenient for image production. Since the observation magnification of each human observer can be changed independently, it is possible to provide an extremely convenient disc/con microscope.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of the opposed discussion microscope according to the present invention, FIG. 2 is a schematic side view of the same microscope, and FIG. 3 is the opposed discussion microscope according to the present invention. FIG. 4 is a side view of the main parts showing the second embodiment of the optical system; FIG. 5 is a side view of the main parts showing the third embodiment of the same optical system; FIG. 6 is a side view of the main parts showing the third embodiment of the optical system. 7 is an explanatory diagram showing the direction of the observation image with respect to the object in the first to third embodiments.
The figure is a side view of a main part showing a fourth embodiment of the optical system, and FIG. 8 is an explanatory diagram showing the direction of an observed image with respect to an object in the fourth embodiment. 1.2...Eyepiece lens, 3...Imaging lens, 4
Light splitting element ■-15, 9... Direction conversion optical element, 6°8... Relay lens, 7... Optical element, 10,
1112... Lens, 13.14... Lens for variable magnification, 15.16... Image rotation optical element, A, ,
A...2 Jil'A 'Jr de person,'' + + ■
2...Object image, M...Microscopic delivery body, 0...
object. Agent Yasushi Shinohara I-1 Figure s-2 Figure 3 Figure 1

Claims (1)

[Claims] (1) A light splitting element for splitting light from an imaging lens into a first light and a second light, and a light splitting element for splitting the light from the imaging lens into a first light and a second light, the second light being substantially the same as the first light. an optical element for directing the light, a relay lens disposed in each of the optical paths of the first light and the second light, and a relay lens disposed in each of the optical paths of the first light and the second light, respectively; An optical system for a facing discussion microscope, comprising a direction conversion optical element for directing the first light and the second light in respective predetermined directions. (2) A relay lens consisting of a lens placed in front of the light splitting WIJ element and a lens placed after the light splitting element on each optical path of the first light and the second light.
The optical system according to claim (1). IJl) The optical system according to claim (1) or (2), wherein a variable magnification lens is disposed at least in the direction of = in each optical path of the g- light and the second light. (4) The optical system according to any one of claims (1) to (3), wherein image rotation optical elements are arranged in the optical paths of the first light and the second light, respectively.