JPH10253890A - Dummy ocular lens-barrel and monocular microscope provided therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dummy ocular lens-barrel and a monocular microscope equipped with the dummy ocular lens-barrel, capable of eliminating trouble at an observation process using a monocular microscope, and keeping the eyes less fatigued even when sample observation extends over a long time. SOLUTION: This monocular microscope has a rotary holder 20 detachable from and rotatable around an ocular lens-barrel 30, a dummy ocular lens-barrel 40 supported on the rotary holder 20 in parallel with the ocular lens-barrel 30, and rotation limiting pins 12 and 13 for supporting the rotary holder 20 at a position where the dummy ocular lens-barrel 40 has an angle of depression approximately equal to that of the ocular lens-barrel 30. Also, the dummy ocular lens-barrel 40 is internally colored dark.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a dummy eyepiece tube and a monocular microscope with a dummy eyepiece tube.

[0002]

2. Description of the Related Art A monocular microscope has only one eyepiece tube, and its structure is simple, easy to handle, and inexpensive.
Widely used in various fields. In particular, the monocular microscope is one of so-called factory microscopes because it is frequently used for observation and inspection measurement of a sample such as a workpiece.

This monocular microscope includes a stage, a microscope eyepiece barrel main body, an objective lens, an eyepiece lens barrel, a focusing knob, and the like.

In order to observe a sample on a stage using a monocular microscope, one eye is put on an eye ring of an eyepiece tube.
By operating the focusing knob in that posture, the focal position of the objective lens is adjusted to the sample. Also, the user adjusts the focus by operating the diopter adjustment unit while keeping his eye on the eyepiece ring of the eyepiece tube.

[0005]

During the observation, the other eye that is not observing will be closed or vaguely looking somewhere. However, it is troublesome to observe the unobserved eye while closing the eyes or vaguely looking at somewhere, and when the sample is observed for a long time, the eyes are tired.

The present invention has been made in view of such circumstances, and its object is to eliminate the troublesomeness of observation using a monocular microscope, and to reduce eyestrain even when observation of a sample takes a long time. And a monocular microscope with a dummy eyepiece tube and a dummy eyepiece tube.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a dummy eyepiece tube according to the first aspect of the present invention has a depression angle near the eyepiece tube of a monocular microscope, which is substantially equal to that of the eyepiece tube. And an eye ring attached to one end of the cylindrical portion, and the inside of the cylindrical portion is dark.

By keeping the eye not observing the sample in contact with the eye ring, the eye can be kept open, so that it is not necessary to perform an operation such as closing the eye each time observation is performed.

A dummy eyepiece tube according to a second aspect of the present invention is the dummy eyepiece tube according to the first aspect, wherein the dark color is black.

Since the inside of the cylindrical portion is black, nothing is seen when looking through the dummy eyepiece tube, and eyestrain is reduced.

A monocular microscope with a dummy eyepiece tube according to the invention of claim 3 is detachable from the eyepiece tube,
A rotary holder rotatable around the eyepiece tube, a dummy eyepiece tube held in parallel with the eyepiece tube on the rotary holder, and the dummy eyepiece tube has a depression angle substantially equal to the eyepiece tube And a holder supporting means for supporting the rotary holder at a position, wherein the inside of the dummy eyepiece tube is dark.

When observing the sample, the eye for observing the sample is brought into contact with the eyepiece tube, and the eye for not observing the sample is brought into contact with the dummy eyepiece tube. Observation can be performed as if observing with.

According to a fourth aspect of the present invention, there is provided a monocular microscope with a dummy eyepiece tube according to the third aspect of the present invention, wherein the appearance of the eyepiece tube and the appearance of the dummy eyepiece tube are different from each other. Are different from each other.

Since the appearance of the eyepiece tube and the appearance of the dummy eyepiece tube are different from each other, the two can be easily distinguished at a glance.

According to a fifth aspect of the present invention, there is provided the monocular microscope with the dummy eyepiece tube according to the third or fourth aspect, wherein the eyepiece ring shape of the eyepiece tube and the dummy eyepiece are provided. It is characterized in that the shape of the eyepiece ring of the eyeglass tube is different.

Since the eyepiece ring of the eyepiece tube and the eyepiece ring of the dummy eyepiece tube have different shapes, they can be easily distinguished at a glance.

According to a sixth aspect of the present invention, there is provided the monocular microscope with the dummy eyepiece tube according to any one of the third to fifth aspects, wherein the dark color is black. I do.

Since the inside of the cylindrical portion is black, nothing is seen when looking into the dummy eyepiece tube, and eyestrain is reduced.

A monocular microscope with a dummy eyepiece tube according to the invention of claim 7 is the monocular microscope with a dummy eyepiece tube according to any one of claims 3 to 5, wherein the dummy eyepiece tube is provided with the eyepiece. It is characterized in that an interpupillary distance adjusting mechanism for adjusting the distance to the tube is provided.

Since the dummy eyepiece tube is provided with an interpupillary distance adjusting mechanism for adjusting the distance to the eyepiece tube, the interpupillary distance adjusting mechanism can easily adjust the interpupillary distance, so that the observer can always be adjusted. Microscope observation with an interpupillary distance suitable for the subject.

The monocular microscope with a dummy eyepiece tube according to the invention of claim 8 is the monocular microscope with a dummy eyepiece tube according to any one of claims 3 to 5, wherein the eyepiece ring of the dummy eyepiece tube is An oblong window is formed.

Since the eyepiece ring of the dummy eyepiece tube is formed with an oblong hole, the interpupillary distance can be adjusted without moving the dummy eyepiece tube. It can be carried out.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a monocular microscope with a dummy eyepiece tube according to an embodiment of the present invention.

A monocular microscope with a dummy eyepiece tube (hereinafter simply referred to as a microscope) 1 shown in FIG.
And the microscope eyepiece tube body (hereinafter simply referred to as the body)
10, a rotation holder 20, rotation restriction pins (holder support means) 12, 13, an objective lens 3, an eyepiece barrel 30, a dummy eyepiece barrel 40, and an illumination lamp house 4.
And an operation knob 5 for focusing.

The illumination lamp house 4 includes, for example, a halogen lamp, and irradiates the sample 50 mounted on the XY stage 2 with halogen illumination light.

The objective lens 3 receives the light from the sample 50 generated by the halogen illumination light and forms an image.

The focusing operation knob 5 moves the objective lens 3 in a direction perpendicular to the plane of the XY stage 2 by, for example, a rack and pinion method, and adjusts the focal position of the objective lens 3 to the sample 50.

A male screw (not shown) is formed in the eyepiece lens barrel 30, and this male screw is formed on the mounting surface 11 of the main body 10 and is screwed to a screw (not shown). The mounting surface 11 is formed so as to be inclined so that the depression angle of the observer with respect to the right eye 61 is, for example, 45 °.

The eyepiece lens barrel 30 includes a diopter adjustment unit 31 having an eyepiece and a rubber eye ring 32. The image formed on the objective lens 3 by the eyepiece is enlarged. The diopter adjustment unit 31 adjusts the distance of the eyepiece in the direction of the optical axis L1 according to the diopter of the observer, and performs focusing.

The dummy eyepiece tube 40 is held by the rotary holder 20, and the dummy eyepiece tube 40 is separated from the eyepiece tube 30 by the interpupillary distance (the distance between the observer's pupils).
0 are parallel to each other (the optical axis L1 and the optical axis L2 are parallel).

The dummy eyepiece tube 40 includes a cylindrical tube portion 41 having a black interior, and a rubber eye ring 43 mounted on one end of the tube portion 41 and having a viewing window 42 formed therein.

The viewing window 42 is formed in an oval shape that is long in the longitudinal direction of the rotary holder 20 in consideration of individual differences in interpupillary distance (see FIG. 2).

An eye ring 43 of the dummy eyepiece tube 40 is also provided.
Has a rectangular shape, whereas the one end of the eyepiece ring 32 of the eyepiece tube 30 has a circular shape.

The rotation limiting pin 1 is provided on the mounting surface 11 of the main body 10.
The rotation limit pins 12 and 13 restrict the rotation range of the rotation holder 20.

The rotation holder 20 is set in a substantially horizontal position (FIG. 1) in which the rotation in the counterclockwise direction is restricted by the rotation restricting pin 12.
When the rotation holder 20 is rotated clockwise (in the direction of arrow a in FIG. 1) from this horizontal position, the rotation limiting pin 1
3 rotates between the horizontal position where the clockwise movement is restricted. Therefore, the dummy eyepiece tube 40 and the eyepiece tube 30 have substantially the same depression angle at any of the restriction positions.

FIG. 2 is a plan view of a rotary holder on which a dummy eyepiece tube is mounted.

An eyepiece tube 3 is provided at one end of the rotary holder 20.
An opening 21 having the same shape as the diopter adjustment unit 31 of 0 and an inner diameter slightly larger than the outer diameter of the diopter adjustment unit 31 is formed.

The rotary holder 20 is mounted on the mounting surface 11 as follows.

First, the eyepiece tube 30 is detached from the mounting surface 11.

Next, the male screw of the eyepiece tube 30 is screwed into the female screw of the mounting surface 11 with the opening 21 of the rotary holder 20 aligned with the position of the female screw of the mounting surface 11.

As a result, the eyepiece tube 30 is fitted into the opening 21 (see FIG. 1), and the rotary holder 20 can rotate around the eyepiece tube 30.

To remove the rotary holder 20 from the eyepiece tube 30, the reverse process may be performed.

FIG. 3 is a plan view showing a modification of the rotary holder on which the dummy eyepiece tube is mounted.

In this modification, an arc-shaped notch 121 is formed instead of forming an opening in the rotary holder 120. One end 121a of the notch 121 is located at the center O of the arc.
It is formed so as to extend further in the longitudinal direction of the rotary holder 120. However, the length of the arc is not limited to this shape as long as it is at least half of the outer circumference of the eyepiece tube 30.

The rotary holder 120 is mounted on the mounting surface 11 as follows.

With the eyepiece tube 30 attached to the mounting surface 11, the notch 121 is pushed into the outer peripheral surface of the eyepiece tube 30 while elastically deforming the distal end portion 121a.

As a result, the notch 121a and the eyepiece tube 30 are fitted, and the rotary holder 120 can rotate around the eyepiece tube 30.

When the rotary holder 120 is to be removed from the eyepiece tube 30, the rotation holder 20 may be pulled out from the outer peripheral surface of the eyepiece tube 30 while elastically deforming the rotary holder 20.

The monocular microscope 1 with the dummy eyepiece tube is used as follows.

When observing the sample 50 with the right eye, the rotary holder 20 is rotated counterclockwise, the dummy eyepiece tube 40 is arranged on the left side of the eyepiece tube 30 (see FIG. 1), and the right eye 61 is placed on the eye ring. The left eye 62 may be brought into contact with the eye ring 43 at 30.

By rotating the rotary holder 20 by 180 ° in the direction of arrow a to move the dummy eyepiece tube 40 to the right side of the eyepiece tube 30, and hitting the right eye 61 on the eye ring 32, it is possible to use the left eye as in the prior art. You can also watch and take notes.

When the dummy eyepiece tube 40 is arranged on the right side of the eyepiece tube 30, the left eye 62 faces the eye ring 30.
Then, the right eye 61 is brought into contact with the eye ring 43, and the left eye
An observation of 0 can also be made.

According to this embodiment, it is possible to observe as if observing with both eyes with both eyes open, and the non-observing eye can see nothing except black. Each time, the troublesomeness of closing one's eyes that are not observing or looking at somewhere vaguely disappears,
Even when the observation of the sample lasts for a long time, eye fatigue can be reduced.

Further, the eyepiece tube 30 and the dummy eyepiece tube 40
Since the shapes of the eyepiece rings differ from each other, the two can be easily distinguished, and the inconvenience at the time of sample observation, such as erroneously selecting the eyepiece tube 30 and the dummy eyepiece tube 40, is eliminated.

Instead of providing the oblong window, an eye width adjusting mechanism (not shown) is provided and the dummy eyepiece tube 4 is provided.
0 in the longitudinal direction of the rotary holder 20, for example, 48 to 74 mm
It is good also as composition which can slide over the range of. Even in this way, the trouble of adjusting the interpupillary distance can be eliminated. In addition,
In this case, the viewing window 142 does not have to be an elliptical hole, but may have a circular shape as shown.

The inside of the dummy eyepiece tube 40 is not limited to black, but may be any dark color such as dark blue.

Further, the eyepiece tube 30 and the dummy eyepiece tube 40
By differentiating the appearance (for example, overall shape, color, pattern, etc.), the two can be easily distinguished from each other, such as when the eyepiece tube and the dummy eyepiece tube are erroneously selected when observing a sample. The inconvenience disappears.

[0059]

As described above, according to the dummy eyepiece tube according to the first or second aspect of the present invention, by using this dummy eyepiece tube for a monocular microscope, the eyes are closed each time observation is performed. Since it is not necessary to perform such operations as above, it is possible to observe as if you are observing with both eyes with both eyes open, so each time you observe, close the eyes that you are not observing or vaguely somewhere In addition to eliminating the hassle of looking at the sample, the eye fatigue can be reduced even when the sample is observed for a long time.

According to the microscope according to the third aspect of the present invention, it is possible to observe as if observing with both eyes with both eyes open, so that the eye which is not observing each time is observed. In addition to eliminating the inconvenience of closing or vaguely looking at somewhere, eyestrain can be reduced even when the sample is observed for a long time.

According to the monocular microscope with the dummy eyepiece tube according to the fourth aspect of the present invention, since the appearance of the eyepiece tube and the appearance of the dummy eyepiece tube are different, the two can be easily seen at a glance. Discrimination can be made, and rapid sample observation becomes possible.

According to the monocular microscope with the dummy eyepiece tube according to the fifth aspect of the present invention, the eyepiece ring of the eyepiece tube and the eyepiece ring of the dummy eyepiece tube have different shapes. Both can be easily distinguished, and there is no blurring during sample observation.

According to the monocular microscope with the dummy eyepiece tube according to the sixth aspect of the present invention, since the inside of the tube portion is black, when looking into the dummy eyepiece tube, nothing is seen and eye fatigue is reduced. Can be reduced.

According to the monocular microscope with the dummy eyepiece tube according to the seventh aspect of the present invention, the dummy eyepiece tube is provided with the interpupillary distance adjusting mechanism for adjusting the distance between the dummy eyepiece tube and the eyepiece tube. The interpupillary distance can be easily adjusted by the interpupillary distance adjusting mechanism, and microscopic observation can always be performed with the interpupillary distance suitable for the observer.

According to the monocular microscope with the dummy eyepiece tube according to the eighth aspect of the present invention, since the eyepiece ring of the dummy eyepiece tube is formed with an oblong hole, the eyepiece can be moved without moving the dummy eyepiece tube. The width can be adjusted, and microscopic observation can always be performed with a simple configuration and an eye width suitable for the observer.

[Brief description of the drawings]

FIG. 1 is a perspective view of a monocular microscope with a dummy eyepiece tube according to an embodiment of the present invention.

FIG. 2 is a plan view of a rotary holder on which a dummy eyepiece tube is mounted.

FIG. 3 is a plan view according to a modified example of a rotary holder on which a dummy eyepiece tube is mounted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Monocular microscope 12, 13 Rotation restriction pin (holder support means) 20 Rotation holder 30 Eyepiece tube 32, 43 Eye ring 40 Dummy eyepiece tube 41 Tube part 42 Viewing window

Claims (8)

[Claims] 1. An eyepiece tube of a monocular microscope, comprising: a tube portion mountable so as to have a depression angle substantially equal to that of the eyepiece tube; and an eye ring attached to one end of the tube portion. A dummy eyepiece tube, wherein the inside of the tube portion is dark. 2. The dummy eyepiece tube according to claim 1, wherein the dark color is black. 3. A rotating holder detachable from the eyepiece tube and rotatable about the eyepiece tube, a dummy eyepiece tube held on the rotating holder in parallel with the eyepiece tube, Holder supporting means for supporting the rotary holder at a position where the dummy eyepiece tube has a depression angle substantially equal to the eyepiece tube, wherein the inside of the dummy eyepiece tube is dark. Monocular microscope with tube. 4. The monocular microscope with a dummy eyepiece tube according to claim 3, wherein an appearance of the eyepiece tube and an appearance of the dummy eyepiece tube are different. 5. The monocular microscope with a dummy eyepiece tube according to claim 3, wherein the shape of the eyepiece ring of the eyepiece tube and the shape of the eyepiece ring of the dummy eyepiece tube are different. 6. The monocular microscope with a dummy eyepiece tube according to claim 3, wherein the dark color is black. 7. The dummy according to claim 3, wherein the dummy eyepiece tube is provided with an interpupillary distance adjusting mechanism for adjusting a distance between the dummy eyepiece tube and the eyepiece tube. Monocular microscope with eyepiece tube. 8. The monocular microscope with a dummy eyepiece tube according to claim 3, wherein an oblong window is formed in an eye ring of the dummy eyepiece tube.