JPS5986020A - Microscope device with variable visual field - Google Patents

Abstract

PURPOSE:To perform speedily and accurately positioning by making the effective diameter of the 1st objective greater than that of the 2nd objective lens and moving the 1st objective lens to and from a lens barrel part including the 2nd objective lens and an object at right angles to an optical axis. CONSTITUTION:The effective diameter of the 1st objective lens O1 is made much greater than that of the 2nd objective lens O2, so when the lens O1 is moved by a fine adjusting screw 4 at right angles to the optical axis, a conjugate point P0 on the object S which corresponds to one point Q on a focal surface F moves to a point P1 together with the lens O1 in the same direction. Since the point P1 is the intersection of an object surface S and the optical axis of the lens O1, the point P1 is formed imagewise at the point Q on the focal surface F in the center of the visual field of an ocular E through the lenses O1 and O2 at all times. Therefore, the positioning is carried out speedily, accurately, and continuously without any out-of-focus state.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mirror device with a variable field of view that allows continuous observation of different positions of an object while the object is fixed.

1. Observe the enlargement of the internal body, or (with a camera that can be photographed), observe or photograph the object of the roasted food. jba aya!11
Conventionally, for the so-called positioning of the 1 medium flame i city (hereinafter referred to as A41 aid 1-1), the group-shape sharpening system that operates the nu'j'Pa lens and the eyepiece is first aligned in the optical axis direction with respect to the object. After focusing by relatively moving the object, it is generally done to move the object in a plane perpendicular to the original axis of the objective lens and position it at a desired position. Recently, quite large devices such as photographing equipment, photometering equipment, ITV light receiving units, etc. are often installed on the lens barrel side, and the entire lens barrel must be moved precisely. The number of scales that have a structure in which the sharp tube is fixed integrally with the pig base is increasing in view of the mechanical strength of earthquake-resistant scales. Objects to be inspected are becoming more diverse, and it is now possible to cut out a part of a large object for testing purposes.In addition, there may be cases where it is necessary to magnify and observe a part of a heavy object without moving it. In this case, focusing can be done by fixing the microscope barrel in the immediate vicinity of the observation object and moving only the objective lens in the optical axis direction. Yes, but.
For positioning, copy! Adjust 1tIJ ゛ -
Since it was not possible to do this, the method used was to move the entire mirror base, align it, and then refocus it. Therefore, in conventionally known microscopes, much time is wasted in positioning the microscope, and it is difficult to precisely position the microscope at a desired position.

The present invention solves the drawbacks of the conventionally known microscopes as described above, fixes both the object to be examined and the main body of the moving GT microscope, and allows quick, smooth and accurate positioning of the object to be examined. To provide a variable field of view microscope device capable of continuously changing the field of view from one point on the side to another desired point without losing focus.

In order to achieve the above object, in the present invention, an objective lens receives a parallel light flux from a first objective lens, a second objective lens, and the first objective lens, and focuses an image of the main object at a predetermined focal position. In a microscope having an objective lens optical system consisting of a second objective lens for forming an image, the effective diameter of the first objective lens is formed to be larger than the effective diameter of the second objective lens, and the first objective lens is formed as a second objective lens. It is movable in a plane perpendicular to the optical axis so as to be able to center θ relative to the lens. The present invention is characterized by a structure in which a specimen is fixed in one trench, and different positions of the specimen can be continuously observed.

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

...−°Py1. J″ ゛
;, ゛Figure 1 is a sectional view of one embodiment of the present invention, and Figure 2 is a scientific diagram (not showing the state in which the first objective 1/ance in the implementation row O in Figure 1 has been moved). . The first column I shows the single-crop microscope installation, and the objective lens optical string O is the first objective lens 0. and 2nd objective/s02 and r, 4, 1st objective
:j97)l/ :/s0+') Ne10 to the front focus
The image of the object S to be examined is focused upward to infinity in FIG. 1 by the first objective lens O. Therefore, one point Pa of the object S passing through the a11 objective lens 0□
The light from force 1 is a parallel beam of light, and the second objective lens 02 is
The parallel light beam is received and a source of point Pa is formed at point Q on a predetermined focal plane F. The image of point Q is observed at the center of the uterus as an imaginary image magnified through eyepiece B.

In the above optical system, the objective lens barrel 1 holding the first objective lens OI valves the objective lens outer barrel IA,
It is supported by the microscope sharp tube body 2 and is movable within a plane perpendicular to the original axis. A second objective lens 02 is supported at the bottom of the optical system.

The eyepiece 1/nozzle system E is held in the eyepiece barrel 3,
The upper part of the sharp part main body 2 is supported by this layer. In addition, two fine adjustment screws 4 and two springs 5 are provided at the lower end of the lens barrel body 2, and the fine adjustment screws 4 are moved back and forth against the biasing force of the springs. When the objective lens outer cylinder IA
M:, illζ moves on the vertical inner surface and is composed of y[1<C. Further, the objective lens h1 is shown in the objective lens outer cylinder IA and is screwed together by a screw means.
It is composed of nine movable parts in the optical axis direction. Therefore, when the object S is not at the front focal position of the first objective lens 01, the object 1 objective lens OL is moved in the optical axis direction ζ to change the distance between it and the second objective 1/nozz 0. You can adjust the focus by Of course, the first objective lens is 0+.

Focusing may be performed by moving the entire microscope optical system consisting of the objective lens optical system 0 consisting of the second objective lens 0 and the eyepiece optical system E in the optical axis direction.

As shown in FIG. 1 (7:l), the first objective lens 01 is formed to have an effective diameter larger by an amount of light than the second objective lens O8. Then, move the first objective lens 01 in the vertical direction relative to the light @ 11, and as shown in Fig. 2, the second objective lens 01/ZO! When the nine-dimensional lens including the eyepiece B and the eyepiece B are decentered, the conjugate point on the virtual object S corresponding to a point Qi on the focal plane moves in the same direction as the first objective lens 01. , point P.

The object is moved to the position (the intersection of the first objective lens O+c/) optical axis and the test object S). In this case, since it is the intersection of the point PI Ii, the object surface S, and the light beam of the first objective lens O+, all the light beams emitted from point 1 and passing through the first objective lens O+ are Parallel to the optical axis of 1 f
It becomes λ luminous flux. , Therefore, the point P is the first objective lens 0
8 and the second illusion 9/Os (Thus, the image is formed at a point Q on the focal plane at the center of the field of view of the eyepiece E at the time of n. By moving perpendicularly to ^(, the bit will not slip off,
Follow the eyepiece E, wl, festival 41. point P0
At the age of 21, you can change your mind continuously. In this case, the luminous flux will be vignetted. FIG. 3 is a diagram showing the optical system arrangement of an embodiment of the present invention, and FIG. 4 shows the first objective lens in the embodiment of FIG. 3. 3 is a side view of the optical system showing a moved state. In FIG. 3, the first objective lens 01 of the objective lens optical system 0 is aligned with the optical axis of two parallel second objective lenses O!a and Otb. Its width and diameter are made larger than the first objective lens of a conventional parallel stereoscopic microscope so that it can move in a direction perpendicular to the plane 2 (in Fig. 3, perpendicular to the plane of the paper). The other 2
A pair of individual second objectives 1/nozzle (ha, 02 b) and a pair of eyepiece optical systems Ea, P; b# are similar to the optical system of a conventional parallel stereoscopic microscope.

In other words, the light beam that passes through the intersection point Po between the object S and the original axis of the first objective lens (J+) passes through the first objective lens peak [,
Therefore, the parallel light fluxes that have passed through regions that are symmetrical to the optical axis of the first objective lens 01 are
A pair of second objective lenses 02a and Orb form images at points Qa and Qb on D'a and Fb.
As the images are formed at these points Qa and Qbζ, the target acupuncture point is observed three-dimensionally by following the respective tilt lens optical systems Ea and Eb.

In this case, in this embodiment, ζ
．． is translated in the direction perpendicular to the plane of the paper in Figure 3.
fs is formed, and during its movement (this, the second objective lens 02
a.
The effective diameter of the objective 1/th is made larger by the amount of light.1. ing. Therefore, in Figure 4 (as shown in Figure 4), the real axis ζ is shown from the position of the first objective Renos mountain from the point +1.
When the object S is moved to a position 7 degrees away, the point of the object S that is conjugate to the points Qa and Qb on the focal plane moves from Po to P8.

The point PI at that time is the first objective (
)1')'ll; Since it is located in a plane perpendicular to the axis, it is emitted from point I]1 and the second objective lens 0
7a and otb+the principal ray of the opposing light beam, the optical axis, and the angle 0), that is, the inner angle, and the angle θ are bilaterally symmetrical. Therefore, the images formed at the two points Qa, Qb of the left and right focal planes have well-balanced aberrations on the left and right sides, and do not adversely affect the actual image. However, when moving the objective lens 01 to the left and right in Fig. 3,
This shows that the I angle θ between the left and right sides is significantly different, and the left and right angles are very different.
3 This appearance is also strange and unfavorable for stereoscopic observation.Therefore, in the case of this stereoscopic microscope armor, the movement of the field of view from side to side is avoided, and it is It is important that the field of view can be moved greatly in the direction of the silver plane.In this example, the focusing is also performed by the lens optical system E a
m Eb 7 together in the original axis direction (can I do this?
The microscope beam optical system (except for the first objective lens O
Second objective lens Ch a, Os b and eyepiece lens Ea.

gb) and the object S to be examined without moving it.

Note that although FIG. 3 does not show the principle of the present invention, it is a diagram of the optical system layout for the actual implementation, but in order to make the image erect, the second objective lens Qla, Otb and the point Qa on the focal plane. , Qh are each provided with a well-known erect prism 7 in the optical path. While keeping it fixed,
Since the observation position of the specimen can be changed, even if a heavy light receiving unit is attached to the microscope end barrel, the lens barrel can remain fixed, and the specimen can be moved evenly. Even if this is not possible, it is possible to directly examine the specimen without taking part of it as a specimen.

Historically, the focus does not become blurred even while changing the field of view, making it possible to continuously change the field of view for examination. Therefore, it is possible to perform extremely efficient microscopy without wasting time in setting up the microscope or changing the field of view, and it is possible to observe the specimen quickly and easily. 4, 1g1 side 1ljl single A till Ming 1st room 1st
FIG. 2 is a cross-sectional schematic diagram showing one embodiment of the present invention; FIG. 2 is a schematic layout diagram showing the embodiment of FIG. FIG. 4 is a side view of the L-system arrangement (the C-system arrangement is 1, and the state in which the objective lens in the embodiment of FIG. 4 is not shown) is shown.

1. 1st objective lens cylinder, IA - 1st objective lens outer cylinder, 4. 1iυ spring, 5. Spring, 01
Nest 1 objective lens, Q! ,02;+ ,Osb--'a-2 objective 1/
Nozzle 1 = j, Ea, Eb eyepiece original school,
S... Test object Figure 3 4th item

Claims (1)

[Scope of Claims] (II. A first objective lens that forms an image of the object at an infinity position, and a parallel light beam from the first objective lens that moves the ball of the object to be examined. Focus position ζ
In the microscope having an objective lens optical system consisting of an objective lens, the effective diameter of the first objective lens is formed to be larger than the effective diameter of the second objective lens.
The objective lens is movable in a plane perpendicular to the C axis so as to be decentered with respect to the second objective lens, and a microscope that operates the second objective lens except for the first objective lens is provided.
Variable field of view microscope device (2) characterized in that it is configured to continuously observe different positions of the object in which the mirror tube part and the object to be examined are fixed.The first objective 1// Field of view ljJ variable microscope device (3) according to claim 1, wherein the optical field (OI) is supported by a first objective lens barrel (1) that is movable in one direction. t'>+J second objective lens is FJ'+J
The first objective 1/nozzle (at) consists of a pair of imaging lenses (Ova, 02b) that are symmetrical about the C-axis ζ and receive parallel light beams passing through different regions. Purchase the binocular solid egg imitation sharp FE thread along with the thread (E ay. gb), and use the above when aligning! ! , 1 pair of proboscis ((Jl)
is a direction perpendicular to the plane 11Uζ that looks at the two optical axes of the second objective lens (02a, 02b).
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