JP2000180730A - Optical observation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical observation device whose holding ability in the case of being used as a microscope is improved. SOLUTION: When this device is used as the microscope, an observer draws and separates a stand barrel 33 from an observation device main body 45 to a front part first. Next, the observer extends an extension barrel 31 to the front part from a moving barrel 13, then a bayonet lug 41 is engaged with an engaging projection 43, so that the barrel 33 is attached to the leading end of the barrel 31 in a state where the barrel 33 are set facing with the front and the rear reversed. The observer attaches another base ring 47 which is a ring-state supporting member to the leading end of the barrel 33, then places this device on the observation base 49 and observers an object to be observed. At this time, the observer adequately and relatively slides a focusing ring 7 (that is, barrel 13) and a fixed barrel 1 along the optical axis, then the barrel 1 and the ring 7 are adequately and relatively turned, so that focusing with respect to the object to be observed can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical observation apparatus capable of adjusting a focal length in a wide range, and more particularly to a technique for improving a holding performance when used as a microscope.

[0002]

2. Description of the Related Art An optical observation apparatus is an apparatus for enlarging an image of an object to be observed by an eyepiece lens group and an objective lens group.
When observing a distant view or the like, a telescope with a relatively low magnification is used, and when observing an insect or a mineral specimen, a microscope with a relatively high magnification is used. However, in recent years, an optical observation device that can be used as a telescope or a microscope by changing the focal length over a wide range, even though it is a relatively small monocular, has been developed. In this type of optical observation device, a fixed cylinder holding the eyepiece lens group and a movable cylinder holding the objective lens group are screwed together with a helicoid screw, and by rotating the movable cylinder with respect to the fixed cylinder, The distance between the eyepiece group and the objective group (ie,
Focal length) changes. When used as a microscope, the observer can obtain a desired magnification by appropriately changing the distance between the objective lens group and the object to be observed.

[0003]

When the above-mentioned optical observation apparatus is used as a microscope, the observer holds the fixed tube and the moving tube with the left and right hands, respectively, and turns the moving tube to focus. I do. However, when the optical observation device is held by hand in this manner, a slight blur of the observer's hand is inevitable. Therefore, especially at a high magnification or the like, the image of the object to be observed greatly fluctuates in the field of view of the observer due to the vibration of the optical observation apparatus, and there has been a problem that the observation becomes extremely difficult. In addition, since it is necessary to hold the optical observation device with both hands even after focusing, there has been a problem that it is not possible to sketch the object while observing the object to be observed or to write down feature points. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an optical observation device that improves the holding performance when used as a microscope.

[0004]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, there is provided a fixed barrel for holding an eyepiece group, an objective lens group, and an optical axis direction with respect to the fixed barrel. An observing apparatus main body composed of a moving cylinder that advances and retreats, and is detachably connected to the tip of the observing apparatus main body, and is used for regulating the distance between the objective lens group and the object to be observed and erecting the main body. An optical observation device including a stand is proposed. According to the present invention, when the observer uses the optical observation device as a microscope, for example, a state where the stand is connected to the tip of the moving cylinder and the observation device main body is erected on the observation table or the like via the stand Observe the object under observation.

According to a second aspect of the present invention, in the optical observation apparatus according to the first aspect, the stand is a transparent or translucent cylindrical member which is fitted and stored in the observation apparatus main body when not in use. Suggest what is. According to this invention, when using or transporting the optical observation device as a telescope, the observer aims to make the optical observation device compact and prevent the stand from being lost by fitting the stand outside the movable cylinder. In addition, when the optical observation device is used as a microscope, light from the outside passes through the stand and illuminates the object, so that the object can be easily observed.

According to a third aspect of the present invention, there is provided the optical observation apparatus according to the first or second aspect, wherein the stand has a distal end to which an annular support member having a diameter larger than that of the stand is detachably connected. I do. According to the present invention, when the optical observation device is used as a microscope, stable support of the observation device main body is realized by the annular support member.

According to a fourth aspect of the present invention, in the optical observation apparatus according to the third aspect, when the height from the ground surface to the center of gravity of the annular support member during use is h, the radius of the annular support member is defined as h. It is proposed that r is set to be larger than h · tan 15 °. According to the present invention, when the inclination of the observation table or the like is at least 15 ° or less, the optical observation apparatus does not fall down.

According to a fifth aspect of the present invention, there is provided an observation apparatus main body comprising a fixed barrel for holding an eyepiece lens group, and a movable barrel for holding an objective lens group and moving back and forth in the optical axis direction with respect to the fixed barrel. A stand that is detachably connected to the tip of the observation device main body and that is used for regulating the distance between the objective lens group and the object to be observed and for erecting the main body. At least one of which is capable of expanding and contracting stepwise. According to this invention, the observer, for example, expands and contracts the stand in stages,
The desired magnification is obtained by appropriately changing the distance between the objective lens group and the object to be observed.

According to a sixth aspect of the present invention, in the optical observation apparatus according to the fifth aspect, the stand or the moving cylinder is operated by a rotation operation and an expansion / contraction operation, and an operation force required for the rotation operation. Is set to be larger than the operation force required for the telescopic operation. According to the present invention, when the observer operates the stand or the moving cylinder, the expansion and contraction operation can be performed with a relatively small operation force, and the operation of the stand is reliably stopped by appropriately performing the rotation operation at the predetermined expansion and contraction position. Let me do.

According to a seventh aspect of the present invention, in the optical observation device according to the fifth or sixth aspect, at least one of the stand and the movable barrel has a magnification notation substantially corresponding to a magnification corresponding to expansion and contraction. Suggest what is being done. According to the present invention, the observer can easily observe the object at a desired magnification by confirming the magnification notation.

Further, in the invention of claim 8, according to claims 5 to 7,
In the optical observation apparatus of (1), a stand in which a variable power lens group is provided in the stand is proposed. According to the present invention, the observer can observe the object at a magnification larger than the maximum magnification obtained by the observation apparatus main body by connecting, for example, a stand in which the lens group having the magnification is built. It can be performed.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of the optical observation device according to the first embodiment of the present invention. In FIG. 1, a member denoted by reference numeral 1 is a fixed cylinder, and an eyepiece lens group holding frame 5 in which an eyepiece lens group 3 is mounted is screwed to a rear portion thereof. A focus ring 7 is loosely fitted on the outer periphery of the fixed cylinder 1, while a sliding cylinder 9 is fitted on the inner peripheral surface of the fixed cylinder 1 so as to be movable back and forth with a predetermined sliding resistance. A moving barrel 13 in which the objective lens group 11 is mounted is screwed to the tip of the focus ring 7, and the moving barrel 13 and the focus ring 7 move integrally. Also. The sliding cylinder 9 has a pin 1 which engages with a rectilinear groove 15 formed on the inner peripheral surface of the fixed cylinder 1 on the outer peripheral surface thereof.
7 is formed, while a female helicoid screw 21 is screwed into a male helicoid screw 19 formed on the outer peripheral surface of the moving cylinder 13.
Are formed on the inner peripheral surface.

With these arrangements, when the observer moves the focus ring 7 back and forth, the movable barrel 13 and the slide barrel 9 move back and forth (coarse movement) integrally with the focus ring 7, and move the focus ring 7. When rotated, both helicoid screws 19, 21
Causes the focus ring 7 and the movable barrel 13 to move back and forth (slightly move). In the figure, a member indicated by reference numeral 23 is a locking key screwed to the sliding cylinder 9, and engages with a screwing restriction groove 25 formed on the outer periphery of the moving cylinder 13, thereby allowing the movable cylinder 13 to engage with the moving cylinder 13. The amount of relative movement with respect to the sliding cylinder 9 (the amount of advance of the two helicoid screws 19 and 21) is regulated. The symbol L in the drawing indicates the optical axis.

The movable cylinder 13 has an extension cylinder 31 at its tip end.
Are fitted inside, so that the extension tube 31 can be extended forward. A semi-transparent stand tube 33 is fitted on the focus ring 7, and the stand tube 33 is fitted on the rear part of the focus ring 7 and the tip of the extension tube. A plurality of bayonet lugs 35 are formed at the rear of the focus ring 7, and these bayonet lugs 35 are engaged with locking projections 37 formed at the rear end of the stand cylinder 33. Further, a plurality of bayonet lugs 41 are also formed at the tip of the extension cylinder 31, and these bayonet lugs 41 are formed on locking tips 43 formed at the tip of the stand cylinder 33.
Can be engaged. In the case of the present embodiment, the portion excluding the stand cylinder 33 is the observation device main body 4 of the optical observation device.
5, the stand cylinder 33 is detachable from the observation apparatus main body. In the state shown in FIG. 1, the bayonet lug 41 on the extension cylinder 31 and the locking projection 43 on the stand cylinder 33 are not engaged.

The operation of the first embodiment will be described below. When the optical observation apparatus of the present embodiment is used as a telescope, the observer holds the fixed cylinder 1 and the stand cylinder 33 with left and right hands as shown in FIG. Observe. At this time, when the observer turns the fixed cylinder 1 and the stand cylinder 33 appropriately relative to each other, the two helicoid screws 1 described above are rotated.
The sliding ring 9 held on the fixed barrel 1 side and the focus ring 7 engaged with the stand barrel 33 side by the screwing action of 9 and 21.
(I.e., the movable barrel 13) relatively moves along the optical axis L, whereby the distance between the eyepiece lens group 3 and the objective lens group 11 changes to achieve focusing.

On the other hand, when the optical observation apparatus of the present embodiment is used as a microscope, the observer first checks the observation apparatus main body 45.
Then, the stand cylinder 33 is pulled out to the front and separated. Next, as shown in FIG. 3, the observer pulls out the extension tube 31 forward from the movable tube 13, and then engages the bayonet lug 41 with the locking protrusion 43, so that the distal end of the extension tube 31 Is mounted on the stand cylinder 33 with the front and rear reversed. Then, in the present embodiment, the observer holds the stand cylinder 33.
After further mounting a base ring 47 as an annular support member, which is an annular support member, at the end of the optical observation device, the optical observation device is mounted on an observation table 49 to observe an object to be observed (not shown). At this time, the observer slides the focus ring 7 (that is, the moving barrel 13) and the fixed barrel 1 appropriately relative to each other along the optical axis L, and then moves the fixed barrel 1
And the focus ring 7 are appropriately rotated relative to each other to perform focusing on the object to be observed.

In the case of this embodiment, the radius r of the base ring 47 is
Is set to a value of h · tan 15 ° where h is the height from the ground surface of the base ring 47 to the center of gravity G of the entire optical observation apparatus. Thereby, as shown in FIG. 4, even if the inclination angle θ of the observation table 49 is 15 °, the optical observation apparatus does not fall. Thus, even when the optical observation device is placed on the top surface of a rock or the like outdoors, the optical observation device hardly collapses, and it is possible to sketch the object while observing the object to be observed and to note a feature point. Become.
In addition, the present inventors conducted various tests, and it was confirmed that if the optical observation device was not tilted at an inclination of 15 °, it would be sufficiently practical in ordinary microscope observation.

FIG. 5 is a longitudinal sectional view of an optical observation apparatus according to a second embodiment of the present invention. In the second embodiment, the observation device main body 45 'is different from the first device described above except that the stand tube 55 is not fitted outside and the extension tube is not present.
Since the observation device main body 45 is the same as that of the embodiment, the same reference numerals are given to the main members of the observation device main body 45, and the repeated description is omitted. In the present embodiment, as shown in FIG. 5, a fine female screw 51 is formed on the inner peripheral surface of the front end of the focus ring 7 ', and a male screw 53 screwed to the female screw 51 is provided on the focus ring 7 at the rear end. The stand cylinder 55 included in the section can be mounted.

The stand cylinder 55 includes a translucent lens group holding cylinder 63 in which the magnifying lens group 61 is provided, and a translucent tapered cylinder 65 connected to the lens group holding cylinder 63. As shown in the developed view of FIG. 6, the lens group holding cylinder 63 is formed with three sets of four-stage expansion / contraction amount adjusting grooves 75 each including an axial groove 71 and a rotational groove 73. As shown in the perspective view of FIG.
Three engagement claws 77 that engage with the expansion / contraction amount adjusting groove 75 are formed. In the case of this embodiment, the engaging claw 77 is loosely fitted in the axial groove 71 and fitted with a predetermined frictional force in the rotational groove 73. Therefore, when the stand cylinder 55 is extended or contracted, the operation force required for the rotation operation is significantly larger than the operation force required for the extension operation.
As shown in FIG. 6, four magnification indicators 79 corresponding to the respective rotation direction grooves 73 are provided on the side surface of the lens group holding cylinder 63.
(50 ×, 40 ×, 30 ×, 25 ×) are engraved.

The operation of the second embodiment will be described below. When the optical observation apparatus of the present embodiment is used as a microscope, the observer can focus on the focus ring 7 'as shown in FIGS.
After the stand cylinder 55 is screwed into the distal end of the base, the engaging claw 77 is engaged with a predetermined position of the expansion / contraction amount adjusting groove 75, and the optical observation apparatus is mounted on the observation table 49 to observe the object (not shown). Observation). For example, FIG. 8 shows a state in which the stand cylinder 55 is most shortened, and the observer observes the object with a magnification of 50 times by the magnifying action of the observation device main body 45 and the magnifying action of the magnifying lens group 61. can do. FIG. 9 shows a state in which the stand cylinder 55 is fully extended, and the observer observes the object with a 25-fold magnification by increasing the distance between the magnifying lens group 61 and the object. Can be. At this time, since the magnification display is engraved on the side surface of the stand cylinder 55, the observer can easily perform observation at a desired magnification.

When the viewer expands and contracts the stand cylinder 55 to change the magnification, the observer can perform the expansion and contraction operation with a relatively small operation force, and at the same time, the predetermined expansion and contraction position (magnification magnification).
Thus, the expansion and contraction of the stand cylinder 55 can be reliably stopped. That is, when the observer expands and contracts the stand cylinder 55 in order to obtain a desired magnification, the operation is very easily performed because the engaging claw 77 is loosely fitted in the axial groove 71. After that, the engaging claw 77 is
When the engaging member 77 is engaged with the rotating groove 73, the entire length of the stand cylinder 55 is securely held by the frictional force between the engaging claw 77 and the rotating groove 73.

The description of the specific embodiment has been completed.
Aspects of the present invention are not limited to this embodiment.
For example, in both of the above embodiments, when changing the distance between the eyepiece lens group and the objective lens group, the focus ring is moved in the optical axis direction to perform coarse movement, and the focus ring is rotated to perform fine movement. However, these operations may be performed only by rotating the focus ring. In the above embodiments, the stand is a translucent cylinder. However, the stand may be composed of a plurality of legs or the like, or may be a transparent or net-like cylinder. Further, in the above-described second embodiment, the magnifying lens group is housed in the stand cylinder, but the reducing lens group may be housed in the stand cylinder, or the variable magnification lens group may not be provided. In the second embodiment, the stand cylinder is expanded and contracted in order to change the magnification. However, the moving cylinder may be expanded and contracted. Further, other specific configurations of the optical observation device are not limited to the above-described embodiment, and can be appropriately changed according to design convenience or the like.

[0023]

According to the optical observation apparatus of the present invention, a fixed barrel for holding the eyepiece group and a movable barrel for holding the objective lens group and moving forward and backward with respect to the fixed barrel in the optical axis direction are provided. Since the observation device main body, and a stand that is detachably connected to the tip of the observation device main body and that is provided for regulating the distance between the objective lens group and the object to be observed and for erecting the main body, When using the optical observation device as a microscope, the observer observes the object to be observed in a state where, for example, a stand is connected to the tip of the moving cylinder, and the observation device body is erected on an observation table or the like via the stand. You can sketch while observing the object,
It is easy to write down feature points.

A fixed cylinder for holding the eyepiece group;
An observation device main body including a moving cylinder that holds the objective lens group and advances and retreats in the optical axis direction with respect to the fixed cylinder, and is detachably connected to a distal end of the observation device main body; In an optical observation device comprising a stand provided for regulating the distance to and standing the main body, and at least one of the stand and the movable cylinder can be expanded and contracted in steps, the observer may, for example, By extending and retracting the stand in a stepwise manner, the distance between the objective lens group and the object to be observed can be appropriately changed, a desired magnification can be obtained, and observation corresponding to the object to be observed becomes easy.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an optical observation device according to a first embodiment of the present invention.

FIG. 2 is a side view when the optical observation device of the first embodiment is used as a telescope.

FIG. 3 is a longitudinal sectional view when the optical observation device according to the first embodiment is used as a microscope.

FIG. 4 is an explanatory diagram illustrating an operation of the annular support member according to the first embodiment.

FIG. 5 is a longitudinal sectional view of an optical observation device according to a second embodiment of the present invention.

FIG. 6 is a development view of a lens group holding cylinder in the second embodiment.

FIG. 7 is a perspective view of a tapered cylinder in a second embodiment.

FIG. 8 is a side view when the optical observation device of the second embodiment is used as a microscope.

FIG. 9 is a side view when the optical observation device of the second embodiment is used as a microscope.

[Explanation of symbols]

 1 Fixed tube 3 Eyepiece lens group 5 Eyepiece lens group holding frame 7 Focus ring 7 'Focus ring 9 Sliding cylinder 11 Objective lens group 13 Moving cylinder 31 Extension tube 33 ‥‥ Stand tube 45 ‥‥ Observation device body 45 '‥‥ Observation device body 47 ‥‥ Base ring 49 ‥‥ Observation table 55 ‥‥ Stand tube 61 ‥‥ Magnifying lens group 63 ‥‥ Lens group holding tube 65 ‥ ‥ Tapered cylinder 71 ‥‥ Axial groove 73 ‥‥ Rotation groove 75 ‥‥ Extension / contraction adjustment groove 77 ‥‥ Engagement claw 79 ‥‥ Magnification display L ‥‥ Optical axis

Claims (8)

[Claims] 1. An observation device main body comprising a fixed cylinder holding an eyepiece lens group, a moving cylinder holding an objective lens group and moving back and forth in the optical axis direction with respect to the fixed cylinder, and a tip of the observation device main body. An optical observation apparatus, comprising: a stand detachably connected to the camera and a stand provided for regulating a distance between the objective lens group and the object to be observed and for erecting the main body. 2. The optical observation apparatus according to claim 1, wherein said stand is a transparent or translucent cylindrical member which is fitted and stored in said observation apparatus main body when not in use. . 3. The optical observation apparatus according to claim 1, wherein an annular support member having a diameter larger than that of the stand is detachably connected to a tip of the stand. 4. When the height from the ground contact surface to the center of gravity of the annular support member during use is h, the radius r of the annular support member is set to be larger than h · tan15 °. The optical observation device according to claim 3. 5. An observation device main body comprising a fixed cylinder holding an eyepiece group, a moving cylinder holding the objective lens group and moving back and forth in the optical axis direction with respect to the fixed cylinder, and a tip of the observation device main body. A stand that is detachably connected to the object and that is used to regulate the distance between the objective lens group and the object to be observed and to stand the main body. At least one of the stand and the movable cylinder is stepwise An optical observation device, which is extendable and contractible. 6. An operation of the stand or the moving cylinder is performed by a rotation operation and an expansion / contraction operation, and an operation force required for the rotation operation is set to be larger than an operation force required for the expansion / contraction operation. The optical observation device according to claim 5, wherein: 7. An optical system according to claim 5, wherein at least one of said stand and said movable cylinder is provided with a magnification notation substantially corresponding to an enlargement magnification corresponding to expansion and contraction. Observation device. 8. The optical observation apparatus according to claim 5, wherein a zoom lens group is provided in the stand.