JPH10227976A - Microscope and intermediate tube of microscope - Google Patents

Abstract

(57) [Problem] To provide a microscope and an intermediate lens barrel of a microscope, which keep a reticle index at a predetermined position in an observation field even when an image of a sample is rotated in the observation field. obtain. SOLUTION: An imaging lens (2) which is arranged in a microscope optical path between an objective lens and an eyepiece and forms an image of light from a sample, and which is arranged on an imaging surface of the imaging lens (2),
A reticle (R) provided with an index of a predetermined shape which can be observed together with the image of the sample, a rotating means (8) for rotating the image of the sample within an observation field of view by an eyepiece, and a rotating operation of the rotating means Correction means (16, 1) for rotating the reticle (R) to rotate the reticle index together with the image of the sample.
7).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a microscope and an intermediate lens barrel of the microscope.

[0002]

2. Description of the Related Art In a conventional microscope, trimming an image of a sample within an observation field of view and simultaneously observing a scale, observation conditions, and the like together with the image of the sample are operations particularly well performed when observing the sample. It is. In order to perform such an operation, an image rotator that rotates an image of a sample in an observation field and a reticle on which an index such as a scale is formed in a microscope optical path are known.

A microscope in which a microscope body has a minimum necessary function and an intermediate lens barrel which is detachably mounted between the microscope body and the lens barrel has the above-mentioned function is also disclosed in Japanese Patent Laid-Open Publication No. Hei. 8
-292352.

[0004]

At present, an infinity system is often used as an optical system of a microscope. In this case, the light emitted from the microscope objective lens becomes a parallel light flux, which forms an intermediate image of the sample by the imaging lens. Usually, the reticle is arranged on the image plane of this intermediate image. Then, after the light that has passed through the reticle is converted into a parallel light beam by a predetermined lens again, an optical system such as an image rotator or an intermediate variable power is arranged and guided to a second objective lens (imaging lens) provided in a lens barrel. .

In such an arrangement of each optical system, when an observation image is to be rotated by an image rotator,
The index provided on the reticle also rotates with the observation image, which causes a problem that the index becomes difficult to see. Here, by arranging the image rotator in front of the reticle in the microscope optical path, the above-described problem is solved, but it is difficult to arrange the image rotator between the objective lens and the second objective lens due to optical performance. This leads to an increase in the size of the device. Also, when a reticle is arranged on the eyepiece image plane formed by the second objective lens in the lens barrel, data drawn on the reticle cannot be transferred to a photographic device or a television camera attached to a microscope.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems. Even when an image of a sample is rotated in an observation visual field, the index of the reticle does not rotate and the reticle index does not rotate. It is an object of the present invention to obtain a microscope maintained at a predetermined position and an intermediate lens barrel of the microscope. The invention according to claim 1 is
An imaging lens (2) arranged in the optical path of the microscope between the objective lens and the eyepiece and configured to image light from the sample, and an imaging lens (2) arranged on an imaging plane formed by the imaging lens (2); Reticle (R) provided with an index of a predetermined shape that can be observed
A rotation unit (8) for rotating an image of the sample within an observation field of view by an eyepiece, and a correction unit for rotating a reticle in accordance with a rotation operation of the rotation unit, and rotating an index of the reticle together with the image of the sample ( 16, 17).

The present invention according to claim 2 provides a reticle (R)
Are detachably mounted on the microscope. According to a third aspect of the present invention, there is provided an imaging lens (2) which is detachable between a microscope main body (107) and a lens barrel (106) having an eyepiece, and forms an image of light from a sample. A reticle (R) arranged on an image plane formed by the imaging lens (2) and provided with an index having a predetermined shape that can be observed together with the image of the sample, and a rotation of the image of the sample within an observation field of view by the eyepiece. And a correcting means (16, 17) for rotating the reticle in accordance with the rotating operation of the rotating means and rotating the index of the reticle together with the image of the sample. It is characterized by the following.

The present invention according to claim 4 provides a reticle (R)
Are detachably mounted on the intermediate lens barrel.

[0009]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing an embodiment of the microscope of the present invention. This microscope enables the function of rotating an image, the function of zooming, and the function of imprinting various scales and data.

A sample 102 placed on a stage 101
Is illuminated by light from the lamp house 103 via the condenser lens 104. Light from the sample 102 is converted into a parallel light beam by the objective lens 105 and is incident on the total reflection prism 1 provided in the microscope main body 100. FIG. 2 is a sectional view taken along the line AA of FIG. As shown in FIG. 2, light from the sample passing vertically upward through the objective lens 105 enters the total reflection prism 1 from below (to the rear of the paper in FIG. 1) the total reflection prism 1 shown in FIG. . The total reflection prism 1 deflects this light in a horizontal direction (a direction parallel to the plane of FIG. 1) and projects the light onto the imaging lens 2. The light passing through the imaging lens 2 is reflected by a mirror 3 and forms an image on an imaging surface 4. A reticle R is disposed at the position of the image plane 4. Indices such as scales and coordinates are drawn on the reticle R, for example, and can be observed from the eyepiece 108 provided in the lens barrel 106 together with the image of the sample. The index is generally a scale, a mask for a photograph finder, a grain scale, or the like, but other information such as a date and a title can be imprinted as data on an image of a sample. The use of such a reticle to capture the information of the spectator's preference on the sample image
This is particularly effective when photographing an image of a sample.

The index formed on the reticle R is usually formed by depositing a scale or the like on a glass surface. However, when imprinting a large number of unspecified information such as dates and titles, a colorless transparent glass or the like is used. It may be simply written by a pen with a pen on plastic. Of course, a liquid crystal screen may be arranged in the optical path as the reticle R, and various data may be input from the outside to observe the data and the image of the sample at the same time.

The reticle R is held on the lens 2 by the holding member 18.
Is provided so as to be rotatable with respect to the optical axis. A gear is formed at a part of a peripheral portion of the holding member 18 and meshes with a gear 17 described later. The light that has passed through the reticle R is reflected by the mirror 5 and becomes a parallel light beam by the lens 6. This parallel light beam enters the image rotator prism 8 via the mirror 7. The image rotator prism 8 is fixed to the holding member 11 and is provided rotatably with respect to the optical axis of the lens 6.

A gear is formed on a part of the holding member 11, and a gear 14 is fixed to the microscope main body 100 so as to mesh with the gear. A part of the gear 14 protrudes from a hole 15 provided in the microscope main body 100. By rotating the gear 14 from this protruding part, the image rotator prism 8 is rotated about the optical axis of the lens 6. Can be. This makes it possible to rotate the image of the sample within the viewing field.

The light emitted from the image rotator prism 8 enters a zoom lens group 9. The observer rotates the cam 13 by rotating the adjustment handle 12, moves the zoom lens group 9 in the optical axis direction, and enlarges or reduces the image of the sample. The light that has passed through the zoom lens group 9 passes through a pentaprism 10, is deflected vertically upward by the total reflection prism 1, and is incident on a lens barrel 106 shown in FIG. Then, the image of the sample is formed again by the second objective lens provided in the lens barrel 106, and the observer moves the eyepiece 10.
The image of this sample is observed from 8.

Returning to FIG. 2, a mechanism for preventing the index provided on the reticle R from rotating with the rotation of the sample image will be described. The gear formed on a part of the holding member 11 meshes with a gear 16a having a larger diameter among the gears 16 having two gears 16a and 16b arranged coaxially with different diameters. The small-diameter gear 16 b meshes with the gear 17, and the gear 17 meshes with the gear provided on the holding member 18. Therefore, when the image rotator prism 8 and the holding member 11 rotate, the rotational force is transmitted to the holding member 18 via the gears 16 and 17, and the reticle R is rotated. Here, when the image rotator prism 8 rotates by 90 degrees, the image in the observation visual field rotates by 180 degrees. At this time, if the reticle R does not rotate, it will rotate 180 degrees together with the observation image. In order for the index of the reticle R not to rotate even when the observation image rotates, the reticle R may be rotated by twice the rotation angle of the image rotator prism 8 with the rotation of the image rotator prism 8. Therefore, the gears 16a and 1
6b has the same gear pitch and twice the number of teeth. That is, the number of teeth of the gear 16a is twice the number of teeth of the gear 16b.

With the above arrangement, the reticle R does not rotate when the image of the sample is rotated, so that the observer can concentrate on observation. Also, while observing the photographic data drawn on the reticle R together with the sample,
By rotating the observation image, it is possible to determine an optimal composition when taking a photograph. FIG. 3 shows a modification of the above embodiment. Members having the same functions as those in FIG. 2 are denoted by the same reference numerals, and descriptions of those members will be omitted.

This modification is an example in which the reticle R is detachable from the microscope main body. The slider 20 holds the holding member 18 holding the reticle R rotatably in a plane perpendicular to the optical path. The microscope main body 100 is provided with a slider receiving portion 21 for sliding the slider 20 in a direction along the plane of FIG. By inserting the slider 20 along the groove provided in the slider receiving portion 21, the gear provided on a part of the holding member 18 meshes with the gear 17.

With such a configuration, when the reticle R is unnecessary, the reticle R can be removed from the microscope main body. FIG. 4 is a side view showing a second embodiment of the present invention.
The same members as those shown in FIG. 1 are denoted by the same reference numerals. In the present embodiment, the intermediate lens barrel 40 that can be mounted between the microscope main body 107 and the lens barrel 106 has the image rotation function, zoom function, and various scale and data printing functions in the first embodiment. It is what we have. The cross-sectional view of the intermediate lens barrel 40 taken along the line BB is the same as that shown in FIG. 2 or FIG. 3 except that the reference numeral 100 is changed to the intermediate lens barrel 40. Is the same as Therefore, the description is omitted here.

With the above-described configuration, the intermediate lens barrel 40 is mounted between the microscope main body 107 and the lens barrel 106 only when these functions (rotation function, zoom function, data imprinting function) are required. You can easily add functions. Further, since the intermediate lens barrel 40 can be attached to and detached from the microscope, maintenance of each optical member can be easily performed.

[0020]

As described above, according to the present invention, even when the image of the sample is rotated in the observation visual field, the index of the reticle does not rotate and is maintained at a predetermined position in the observation visual field. Therefore, the observer can concentrate on the observation. In addition, while observing photographic data and the like drawn on the reticle together with the sample, the observation image can be rotated to determine an optimal composition at the time of photographing. In addition, in addition to the above-described effects, the present invention described in claim 3 moves the intermediate lens barrel between the microscope main body and the lens barrel only when a function of imprinting data and scale and rotating the image is required. It only needs to be attached, and functions can be easily added. Further, since the intermediate barrel can be attached to and detached from the microscope, maintenance of each optical member can be easily performed. Further, the inventions according to the second and fourth aspects are convenient because the reticle may be inserted only when data or scale is required to be printed during observation or photographing.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view showing a modification of the first embodiment.

FIG. 4 is a side view showing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Total reflection prism 2 ... Image forming lens 3, 5, 7 ... Mirror 4 ... Image forming surface 6 ... Lens 8 ... Image rotator prism 9 ... Zoom lens group Reference Signs List 10 pentaprism 11, 18 holding member 14, 16, 17 gear 40 intermediate lens barrel 100, 107 microscope body 105 objective lens R reticle

Claims (4)

[Claims] An imaging lens disposed in an optical path of a microscope between an objective lens and an eyepiece and configured to form an image of light from a specimen; and an imaging lens disposed on an imaging plane formed by the imaging lens. A reticle provided with an index of a predetermined shape that can be observed together with the reticle, a rotation unit for rotating the image of the sample within an observation field of view by the eyepiece, and rotating the reticle with a rotation operation of the rotation unit. A microscope having correction means for rotating the index of the reticle together with the image of the sample. 2. A microscope according to claim 1, wherein said reticle is detachably mounted on said microscope. 3. An imaging lens which is detachable between a microscope main body and a lens barrel provided with an eyepiece, is arranged on an imaging surface formed by the imaging lens, and forms an image of light from the sample. A reticle provided with an index of a predetermined shape that can be observed together with the image of the sample, and an intermediate lens barrel of a microscope including a rotating unit for rotating the image of the sample in an observation field of view by the eyepiece lens. An intermediate lens barrel of a microscope, comprising: a correction unit configured to rotate the reticle in accordance with a rotation operation of the rotation unit and rotate an index of the reticle together with the image of the sample. 4. The intermediate lens barrel according to claim 3, wherein said reticle is detachably mounted on said intermediate lens barrel.