JPH07261096A - Stereo-microscope - Google Patents

Abstract

PURPOSE: To actualize an observing and a photographing function for a body at the same time by making use of internal lighting and prevent a ghost from appearing at an ocular part. CONSTITUTION: Ocular parts are arranged above the optical axes L1 and L2 of a couple of objective groups 15 and 17, and half-reflection members 15 and 17 are interposed respectively. The light from a light source 27 is passed through 2nd and 3rd reflection members 29 and 31 and 4th and 5th reflection members 33 and 35 to irradiate the body. To one half-reflection member 17, a mirror box 23 is fixed together with a 1st reflection member 21; as the mirror box 23 moves, the irradiation light along an optical axis L2 is cut off and reflected light from the body is reflected by the 1st reflection member 21 to the side of a camera 19. To prevent a ghost from appearing, polarizing filters 4, 6, 8a, and 10a are provided for the irradiation light and reflected light.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binocular stereomicroscope, and more specifically, it enables an object to be observed and photographed at the same time by utilizing internal illumination, and a ghost generated in an eyepiece section. ) Relates to a binocular stereomicroscope capable of preventing.

[0002]

2. Description of the Related Art Generally, a microscope is a kind of magnifying glass,
It is composed of two groups of lenses in front and rear, that is, an objective lens group and an eyepiece lens group, and is for observing a fine structure which cannot be discriminated by the naked eye.

As one of such microscopes, a stereoscopic microscope having two stereoscopic eyepiece groups, that is, a binocular stereomicroscope, has been developed so that an observer can observe an object three-dimensionally with the naked eye. Has been done. Such a stereoscopic microscope observes an object with an Abbe type in which an optical axis of an objective lens group is parallel to observe an object, and an optical axis of the objective lens group forms a predetermined optical angle. There is a Greenhouse format.

[0004]

However, in such a conventional binocular stereomicroscope, in order for an observer to observe or photograph an object using the internal illumination means, an objective lens unit having a zoom lens group is used. When internally illuminating along the optical axis, the illumination light emitted from the internal illumination means passes through the lens and is reflected by the object to be observed and reflected while passing through the lens. Since the light (ghost) is collected and incident on the eyepiece lens portion, the light diffusely reflected by the eyes of the observer can be seen. Therefore, there is a problem that it becomes impossible to observe an object in detail.

Further, when an object to be observed is photographed by using an external photographing means, the amount of light is insufficient only by the internal illumination, and an external illumination device such as a fluorescent lamp or a fiber illumination is separately provided. Often installed. However, if the external illumination means is separately provided in this way, there is a space limitation and the configuration becomes complicated.

Therefore, the present invention was devised in order to solve the above-mentioned problems of the prior art, and the object of the present invention appears on the eyepiece side when the optical axis illumination is performed by the internal illumination means. It is to provide a binocular stereomicroscope capable of preventing ghosts and allowing clear observation of objects.

Another object of the present invention is to enable internal illumination through an optical system for observing an object, and to selectively change the optical path of the internal illumination to enable photographing, thereby improving the observation and photographing functions. It is to provide a binocular stereomicroscope that can be realized at the same time.

[0008]

[Means for Solving the Problems] In order to realize this,
The binocular stereomicroscope of the present invention includes a light source; a first eyepiece lens group, a first objective lens group, and light emitted from the light source is deflected toward the subject side through the first objective lens group and from the subject side. The light reflected again is the first
A first lens system including first reflecting means for deflecting the eyepiece lens group; a second eyepiece lens group, a second objective lens group, and light emitted from the light source, the second objective lens group A second lens system including a second reflecting means for deflecting light reflected by the subject side to the second eyepiece group through the second lens system; A third reflecting means for deflecting the light re-reflected from the subject to the photographing means; and one of the third reflecting means and one of the first and second reflecting means. And a transfer unit for selectively deflecting the light reflected from the subject side with respect to the eyepiece lens group and the photographing unit by moving in the optical axis direction.

In another embodiment, the binocular stereomicroscope is
In order to prevent a ghost of illumination light from the light source, a ghost preventing means is provided between the light source and the first and second reflecting means.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

It should be noted that the use of terms such as up and down, left and right, and front and rear in the description of the present embodiment shows the positional relationship in the drawings for convenience of description, and does not limit the present invention. In order to avoid duplication of description, the same reference numerals are given to the same parts throughout the drawings.

1 and 2 are a front view and a right side view showing the appearance of a binocular stereomicroscope according to the present invention. Reference numeral (1) represents the main body of the binocular stereomicroscope according to the present invention.

Two eyepieces (3) and (5) are provided on the upper front surface of the main body (1) so that an object can be observed. An objective lens section (7) is provided at the lower end of the main body (1) with a predetermined inclination angle. This objective lens section (7)
Has a zoom lens group.

Further, on both sides of the main body (1), there are disposed adjusting levers (9a) and (9b) for changing the magnification by interlocking with the zoom lens group of the objective lens section (7),
An internal illumination unit (11) for illuminating via the objective lens group is disposed on the rear upper side. Along with the observation of the object, a photographing device (not shown) for photographing the observed object is supported by the support base (13), and the observed object is selectively photographed. It is like this.

FIG. 3 is a drawing showing the configuration of the optical system of the microscope of this embodiment. In addition, FIGS. 4 to 7 show specific configurations of each part of the optical system. As shown in these drawings, an image of the object is provided on the upper side of the pair of objective lens groups (7a), (7b) of the objective lens section (7) and on the side of each eyepiece section (3) (5) for observing the object. To be incident,
Half-reflecting member (15) (1) capable of transmitting a part of light
7) is arranged.

One half reflecting member (15) is fixedly installed so as to form a predetermined inclination angle with respect to the optical axis (L1) of the one objective lens group (7a). The other half-reflecting member (17) is the other objective lens group (7b).
A first reflecting member which forms a predetermined tilt angle with respect to the optical axis (L2) of the object and selectively reflects the optical path of the object toward a photographing device such as a CCD camera connected to a camera (19) or a monitor ( It is fixedly installed in a mirror box (23) slidably installed in the main body (1) in such a posture as to pass each other.

A conversion lever (25) is provided on one side of the mirror box (23), and a main body (1) is provided.
The outer side of the mirror box (23) projects to facilitate the transfer of the mirror box (23) according to the observer's selective use. Further, the half reflection members (15) and (17) are
Second and third reflecting members (29) and (31) for reflecting light from a light source (27) built in the internal lighting section (11) and fourth and fifth reflecting members arranged at a predetermined distance from them. (33) It is located at a position intersecting the optical path of the light reflected by (35), reflects the path of this irradiation light, and irradiates the object through the respective object lever groups (7a) (7b). There is. And the objective lever group (7a)
The object is observed through the eyepieces (3) and (5) installed on the extension of the optical axes (L1 and L2) of (7b).

Here, the half reflection member (17) described above.
Together with the first reflecting member (21) and the mirror box (2
The mirror box (23) is fixedly mounted on the mirror box (3) so that it can move together with the mirror box (23), and after observing an object through the respective eyepiece lens sections (3) and (5), the position of the mirror box (23). Is moved to move the position of the half reflection member (17), the light emitted from the light source (27) is blocked, and the reflected light of the object from the optical axis (L2) is changed to the first reflection member (21). It is adapted to be incident on a camera (19) which is a photographing means through.

That is, the path of the light emitted from the first reflecting member (21) is changed so that the light reflected by the first reflecting member (21) enters the lens portion of the camera (19). A sixth reflecting member (37) is arranged (see FIG. 8).

Further, in the mirror box (23), the light emitted from the light source (27) at the time of photographing passes through the half reflecting member (17) and passes through the first reflecting member (21) to the camera (19) side. A light shielding unit is provided so as not to affect the light of the object incident on the optical system and to block the light incident from the eyepiece lens unit (5). In the present embodiment, as the light shielding means, the first reflecting member (21) is provided so as to absorb the light passing through the half reflecting member (17) and the light incident from the eyepiece lens part (5) and prevent the reflection thereof. The black coating portion (21a) is provided on the back surface of the above, but is not limited to this.

Each reflecting member is constructed as a plane mirror.

In the binocular stereomicroscope of the present invention thus constructed, when the light source (27) is turned on for observing a target object, the light emitted from the light source (27) emits the second and third light. Reflecting members (29) (31) and fourth and fifth
The paths are changed by the reflecting members (33) and (35) and further reflected by the respective half reflecting members (15) and (17) as shown in FIG. The object is illuminated through the objective lens groups (7a) and (7b).

Therefore, the observer can see that the half reflection member (1
5) Through (17), the object can be accurately observed by the respective eyepieces (3) and (5) located on the extension of the optical axis (L1, L2). At this time, the magnification of the object is adjusted by the adjusting levers (9a) and (9b) that interlock the objective lens groups (7a) and (7b).

After the observation of the object is completed in this way, the mirror box (2
The conversion lever (25) of 3) is slid in the direction of arrow E in FIG. Then, the half reflection member (17) and the first reflection member (21) fixed to the mirror box (23).
As shown in FIG. 8, the object moves through the mirror box (23), the reflected light of the object incident through the objective lever group (7b) is reflected by the first reflecting member (21), and the sixth The camera (1
It is incident on the lens portion of 9).

When the light reflected from the object is incident on the camera (19), the photographer can obtain a fine structure of the object through the camera (19). If a CCD camera connected to a monitor is applied instead of the camera (19), observation and image memory can be performed.

On the other hand, the microscope according to the present invention is provided with means for absorbing the ghost due to diffused reflection of the light reflected from the object side.

That is, the half reflection member (15) (1
On the upper side of 7), the first and second polarization filters (4) that prevent ghosts by absorbing the component of diffuse reflection of the light reflected from the object side and allowing only the light of a fixed polarization direction to pass through. (6) is provided.

The fourth and fifth reflecting members (33) (3)
On the upper side of 5), there is installed a ghost prevention assembly (8) (10) having third and fourth polarization filters (8a) (10a) for preventing irregular reflection of illumination light.
The anti-ghost assembly (8) (10) is rotatable so as to adjust the polarization direction of the illumination light.

That is, as shown in FIG. 3, the vibration plane of the polarized light which is reflected from the object side and passes through the first polarization filter (4) and the vibration of the polarization of the illumination light which passes through the fourth polarization filter (10a). The plane becomes vertical, and the plane of vibration of polarized light reflected from the object side and passing through the second polarization filter (6) and the plane of polarized light of illumination light passing through the third polarization filter (8a) become vertical. Then, adjust each ghost prevention assembly (8) (10) by rotating. This allows
It is possible to prevent ghosts induced by the optical device. The second and third reflecting members (29) and (31) are arranged on the upper side of the polarization filters 8a and 10a so as to face each other, and the second and third reflecting members (29) and (31) and the light source (27). ), Condenser lenses (28) and (30) are arranged respectively.

Therefore, when the light source (27) of the internal illumination unit (11) is turned on in order to observe a predetermined object, the light emitted from the light source is the condenser lens (28) (3).
0) and the optical path is changed by the second and third reflecting members (29) and (31).
The light enters the polarization filters (8a) and (10a).

Light incident on the respective polarization filters (8a) and (10a) becomes polarized light having a vibrating surface in the directions of arrows A and B as shown in FIG. 3, and the fourth and fifth reflecting members (3).
3) (35) and the first and second half reflection members (15, 1)
It is reflected by 7) and is irradiated to the object side through the objective lens groups (7a) and (7b).

Thus, the object is illuminated by the optical axis illumination performed along the optical axis of the objective lens section (7). Then, the subject image re-reflected from the object side is passed through the first and second half reflection members (15) and (17) and the first and second polarization filters (4) and (6) to the eyepieces (3) and (5). Then, I come to observe the image of the object.

At this time, the illumination light illuminated through the third polarization filter (8a) is only the polarization component of the vibrating surface in the direction of arrow A, and other illumination light is absorbed, so that a ghost can be prevented and the object side When the second polarization filter (6) is reflected again by and is incident on the eyepiece lens part (5), the second polarization filter (6) vibrates in a direction orthogonal to the direction of arrow A of the third polarization filter (8a), that is, in the direction of arrow D. Since only the polarized light of (1) is transmitted and the other components are absorbed, it is possible to prevent ghost when observing through the eyepiece lens part (5), and clear observation is possible.

Similarly, the illumination light given through the fourth polarization filter (10a) becomes the polarization of the vibrating plane in the arrow B direction, and in the first polarization filter (4), the direction orthogonal to the arrow B direction, that is, the arrow Since only the polarized component in the C direction is passed and the other components are absorbed, ghost can be prevented, and a clear subject image can be observed when observing through the eyepiece lens part (3).

[0035]

As described above, according to the binocular stereomicroscope of the present invention, when an object is to be observed, the illuminating light emitted from the light source of the internal illuminating unit has a certain polarization component by the ghost preventing unit. Ghost light is temporarily prevented by passing only the light, and when the light from the optical axis illumination of the objective lens unit is reflected again by the object and enters through the eyepiece lens unit, the same vibration as the polarization filter of the ghost prevention unit is generated. Since only the polarized component in the plane direction is passed and other illumination light is absorbed, it is possible to reliably prevent ghost generation, enable accurate and clear observation, and improve reliability. Moreover, since the photographing function of the photographing means can be executed at the same time by utilizing the lighting efficiency of the internal lighting to the maximum even without a separate external lighting, it is structurally simple and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view of a binocular stereomicroscope according to a preferred embodiment of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a drawing showing a configuration of an optical system of a microscope according to the present invention.

FIG. 4 is a front view showing a specific configuration of a microscope of this optical system.

5 is a plan view of FIG.

6 is a right side view of FIG. 4.

7 is a right side view of FIG.

FIG. 8 is a diagram for explaining a switching operation state of the optical system according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main body 3 ... Eyepiece part 5 ... Eyepiece part 7 ... Objective lens part 9a ... Adjustment lever 9b ... Adjustment lever 13 ... Support stand 15, 17 ... Half reflection member 19 ... Camera 23 ... Mirror box 25 ... Conversion lever

Claims (10)

[Claims] 1. A light source; a first eyepiece lens group, a first objective lens group, and light emitted from the light source is deflected toward the subject side through the first objective lens group and is reflected again from the subject side. A first lens system including first reflecting means for deflecting incoming light to the first eyepiece lens group; a second eyepiece lens group, and a second objective lens group;
Second reflecting means for deflecting the light emitted from the light source to the subject side through the second objective lens group and deflecting the light re-reflected from the subject side to the second eyepiece lens group. A second lens system included; a photographing means for photographing an image of a subject to be observed; a light provided to one of the first and second lens systems and selectively directed to the photographing means by the light directed to the eyepiece lens. Binocular stereomicroscope, which comprises: 2. The optical path conversion means includes third reflecting means for deflecting light re-reflected from the subject to the photographing means; and light reflected from the subject side is selectively deflected to the photographing means. The binocular according to claim 1, further comprising a mirror box for selectively moving one of the third reflecting means and one of the first and second reflecting means in the optical axis direction. Stereo microscope. 3. The binocular stereomicroscope according to claim 2, wherein the optical path changing means is provided with a light blocking means for blocking the light incident on the eyepiece lens. 4. The binocular stereomicroscope according to claim 3, wherein the light shielding means has a black coating formed on the back surface of the third reflecting means. 5. A conversion lever is projected from the mirror box to the outside so that the mirror box can be moved from the outside of the microscope body.
The binocular stereomicroscope described. 6. A ghost prevention unit is provided between the light source and the first and second reflection units to prevent ghosts of the respective irradiation lights.
The binocular stereomicroscope described. 7. The ghost prevention means includes a first polarization filter arranged between the light source and the first reflecting member,
A second polarizing filter arranged between the light source and the second reflecting member, a third polarizing filter arranged between the first reflecting member and the first eyepiece lens group, and the second reflecting member. 7. A fourth polarizing filter arranged between the second eyepiece lens group, and the fourth polarizing filter.
The binocular stereomicroscope described. 8. The vibration direction of light passing through the first polarization filter is the same as the vibration direction of light passing through the fourth polarization filter, and the vibration direction of light passing through the second polarization filter is the first vibration direction. The binocular stereomicroscope according to claim 7, wherein the vibration direction of the light passing through the four-polarization filter is the same. 9. The binocular stereomicroscope according to claim 7, wherein the third and fourth polarizing filters are mounted on a swivelable filter assembly. 10. The binocular stereomicroscope according to claim 8, wherein the polarization filter is installed so as to be rotatable so as to pass only a specific polarization of the illumination light.