JP2002031765A - Adapter for microscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adapter for microscope capable of attaching a photographing device having a photographing lens to both of the photographing port and the eyepiece lens barrel of a microscope. SOLUTION: This adapter for microscope is provided with a screw part 3a for connecting the photographing lens 53a of a camera at one end of an adapter part 1A, a cylinder part 4a inserted in the eyepiece inserting part of the microscope and a screw part 8 to which a C mount adapter 50 is connected at the other end. A lens barrel 3 is provided with a lens 20 for forming an observed image on the image pickup surface of the camera with the objective lens of the microscope and the photographing lens 53a on the inside. Furthermore, the outer peripheral surface of the cylinder part 4a is prevented from being scratched by attaching a cover part 1b to the cylinder part 4a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microscope adapter for mounting a photographing apparatus having a photographing lens on a microscope.

[0002]

2. Description of the Related Art Conventionally, a microscope 10 having a photographing port as shown in FIG. The microscope 10 is provided with a photographing port 56 separately from the eyepiece lens barrel 11, and a light beam from the objective lens 57 is guided to both the eyepiece lens barrel 11 and / or the photographing port 56. A photographing device 58, for example, an electronic camera having no photographing lens using a CCD image pickup device, has a photographing port 56 through a dedicated adapter 50.
Attached to.

The mounting portion of the photographing device 58 is manufactured based on a standard called C-mount standard, and the connection portion on the adapter 50 side also conforms to the C-mount standard. Such an adapter of the C mount standard is called a C mount adapter. In the C mount standard, the distance from the body of the connection portion of the imaging device to the imaging surface is defined as 17.526 mm.

The photographing device 58 used here is specially manufactured for a microscope and has a drawback that it is more expensive than a commercially available electronic camera with a lens (digital still camera). . In recent years, the performance of electronic cameras has been dramatically improved, and adapters with lenses that allow the electronic cameras to be attached to the C-mount adapter 50 have been devised. In addition, even with a microscope having no imaging port 56, an adapter with a lens that allows an electronic camera with a lens to be attached to the eyepiece to take an observation image,
It is disclosed in Japanese Utility Model Registration No. 306847. In this case, instead of the eyepiece, an adapter with a lens is inserted into the eyepiece insertion part 54 of the eyepiece barrel 11 and used.

[0005]

However, the mounting port on the microscope side differs between the adapter for the photographing port and the adapter used by being inserted into the eyepiece insertion section 54, so that the adapter for the photographing port is connected to the eyepiece. Insert the eyepiece lens adapter into the insertion section 54
It cannot be attached to the mount adapter 50. Therefore, when the electronic camera is replaced between the photographing port 56 and the eyepiece barrel 11 in accordance with photographing, or when both a microscope having the photographing port 56 and a microscope not having the photographing port 56 are used, both are used. It was necessary to prepare an adapter.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a microscope adapter that can mount a photographing device having a photographing lens to both a photographing port of a microscope and an eyepiece lens barrel.

[0007]

An embodiment of the present invention will be described with reference to FIG. 1 and FIGS. (1) Explaining with reference to FIG.
A microscope adapter in which a photographing lens connecting portion 3a for connecting a photographing lens 53a of a camera is provided at one end of the cylindrical body 1A, and a cylindrical portion 4a inserted into an eyepiece insertion portion of the microscope is provided at the other end. An adapter connection portion 8 provided at the tip of the cylindrical portion 4a and connected to the imaging device adapter 50 for the microscope, and an imaging surface of the camera provided together with the objective lens and the imaging lens 53a of the microscope, provided in the cylindrical body 1A. The above-described object is achieved by providing the optical system 20 for forming an observation image in the optical system. (2) According to a second aspect of the present invention, in the adapter for a microscope according to the first aspect, a cylindrical cover member 1B for covering the outer peripheral surface of the cylindrical portion 4a is detachably provided. (3) In connection with FIG. 5, the invention of claim 3 is provided with a photographing lens connecting portion 3a for connecting a photographing lens 53a of a camera to one end of a cylindrical body 30A and a microscope at the other end. Cylindrical part 31a inserted into eyepiece insertion part
Is a microscope adapter provided with a cylindrical portion 31a.
Cover the outer peripheral surface of the camera, and attach a photographing device adapter 50 for a microscope to the end.
A cylindrical cover member 30B provided with an adapter connection portion 8 for connecting the camera and a cylindrical body 30A are provided in the cylindrical body 30A, and form an observation image on an imaging surface of a camera together with an objective lens and a photographing lens 53a of a microscope. The above-mentioned object is achieved by providing the optical system 20 for the purpose. (4) When described in association with FIGS. 6 and 7, the invention of claim 4 is a microscope adapter for connecting a camera having a photographing lens 53a to a microscope, and has a photographing lens of the camera at one end. A photographing lens connecting portion 3a for connecting the photographing lens 53a and a first fastening portion 41 at the other end are provided, respectively.
A first cylindrical body 40A having an optical system 20 for forming an observation image on the imaging surface of the camera, and a second fastening portion capable of fastening to the first fastening portion 41 at one end thereof A second cylindrical body 40 provided with a cylindrical portion 42 provided at the other end thereof and inserted into the eyepiece insertion portion of the microscope main body.
C, and a third tubular body 40B provided with a second fastening portion 44 at one end and an adapter connection portion 8 connected to the microscope photographing device adapter at the other end. ,
One of the second or third cylindrical bodies 40C, 40B is the first
The above object is achieved by being selectively fastened to the cylindrical body 40A. (5) According to a fifth aspect of the present invention, in the microscope adapter according to any one of the first to fourth aspects, an optical system equivalent to an eyepiece of the microscope is used as the optical system 20.

In the meantime, in the section of the means for solving the above-mentioned problems which explains the constitution of the present invention, the drawings of the embodiments of the present invention are used to make the present invention easy to understand, but the present invention However, the present invention is not limited to the embodiment.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. -First Embodiment- Fig. 1 is a diagram showing a first embodiment of a microscope adapter 1 according to the present invention, and (a) shows a usage pattern when a photographing device is mounted on a photographing port. (B) shows a usage pattern when the photographing device is mounted on an eyepiece lens barrel. FIG. 2 is a sectional view of an eyepiece used for a microscope. In the adapter 1 of the present embodiment, FIG.
As shown in FIG. 1A, the camera comprises an adapter 1A and a cover 1B. When the camera is mounted on an eyepiece of a microscope, the cover 1B is detached and used as shown in FIG. 1B.

The adapter section 1A is composed of a lens barrel 3 and a connection section 4.
(20a, 20b, 20c) are provided. In the present embodiment, the same lens as that provided in the eyepiece 52 shown in FIG.
The distance between d and the lenses 20a, 20b, 20c is determined by the distance between the end face 52a of the eyepiece 52 and the lenses 20a, 20b, 20c.
Is set to be the same as

Reference numeral 5 denotes a holding ring for fixing the lens 20 in the lens barrel 3. The lens barrel 3 is formed with a screw portion 3a, and the tip portion of the photographing lens 53a of the camera is connected to the screw portion 3a. Normally, a female screw portion for mounting an accessory such as a filter is formed at the tip of the photographing lens 53a.
Is formed with a male screw to be screwed into the female screw portion.

On the other hand, the connecting portion 4 has a cylindrical portion 4a and a flange portion 4b, and a screw portion 8 for connecting a C mount adapter is formed on the inner periphery of the cylindrical portion 4a. Cylindrical part 4
The outer diameter dimension A of “a” is set to be equal to the outer dimension A of the insertion portion 55 (see FIG. 2) of the eyepiece 52. The length from the flange end surface of the portion having the outer diameter A of the cylindrical portion 4a is equal to the length (about 22.5 mm) from the end surface 52a of the eyepiece 52 to the tip of the insertion portion. Also, since the distance from the end face 4d of the flange portion 4b to the focal plane of the objective lens (the position of the observation elephant 14) is 10 mm, and the distance from the body of the C mount adapter 50 to the focal plane of the objective lens is 17.526 mm, connection is made from the end face 4d. The length to the tip of the part 4 is 27.526 mm. Generally, the length of the insertion portion 55 of the eyepiece 52 is about 22.5 mm, but since the length from the end surface 4d to the tip of the connection portion 4 is longer than 22.5 mm in the adapter portion 1A, it is 22.5 mm.
The outer diameter dimension on the tip side from m was smaller than A.

In the use mode shown in FIG. 1A, the cover 1B is used in a state where the cover 1B is externally fixed to the connection 4 of the adapter 1A. A set screw 15 is provided on the cover 1B. The set screw 15 is engaged with a V-groove 4c provided on the outer peripheral surface of the connection portion 4 and the set screw 15 is tightened, so that the cover 1B becomes an adapter. It is fixed to the section 1A.
FIG. 3 is a view showing a mounting procedure when the camera 53 is mounted on the photographing port 56 of the microscope 10. As shown in FIG. 1A, the cover 1B is fixed to the adapter 1A, and the lens barrel 3 is fixed.
The photographing lens 53a of the camera 53 is connected to the screw portion 3a.

The screw portion 8 of the connection portion 4 is a screw of the same standard as that of the photographing device connection screw portion of the C-mount adapter 50, and the adapter portion 1A to which the camera 53 is attached using the screw portion 8 is used. Connect to C mount adapter 50. When the adapter section 1A is attached to the C-mount adapter 50, the C-mount adapter 50 is inserted into the imaging port 56 of the microscope 10.

FIG. 4 is a view showing a mounting procedure when the camera 53 is mounted on the eyepiece barrel 11 of the microscope 10. The photographing lens 53a of the camera 53 is attached to the screw portion 3a of the lens barrel 3.
Is connected, one of the eyepieces 52 is removed from the eyepiece insertion part 54, and the cylindrical part 4a of the adapter part 1A to which the camera 53 is connected is inserted into the eyepiece insertion part 54. At this time, 22.5 mm of the eyepiece insertion portion 54
Even if a deeper portion has an inwardly protruding portion, for example, a stepped portion, the outer diameter of the cylindrical portion 4a on the tip side of 22.5 mm is smaller than A, so that it does not interfere with the protruding portion.

Numeral 14 denotes an observation image formed by the objective lens of the microscope. Usually, the position of the observation image 14 is 10 mm from the tip of the eyepiece insertion portion 54 (see FIGS. 1 and 4). Stipulated. That is, the observation image 14 is positioned at a distance of 10 mm from the end face 52a of the eyepiece 52.
Is imaged. Also in the present embodiment, when the camera 53 is mounted on the eyepiece insertion part 54 using the adapter part 1A as shown in FIG.
An observation image 14 is formed at a position m.

The light beam from the observation image 14 is refracted by the lens 20 to become a substantially parallel light beam, and is formed on the image pickup surface of the camera by the photographing lens 53a. That is, in the case of a camera using a film, an observation image is formed on a film surface, and in the case of an electronic camera, an observation image is formed on an imaging surface of a CCD image sensor.

On the other hand, when the C-mount adapter 50 is mounted on the photographing port 56 (see FIG. 3), the C-mount adapter 50 is 17.52 as shown in FIG.
It is determined that the observation image 14 is formed at a position of 6 mm. The distance of the observation image 14 from the end face 4d of the flange portion 4b is 10 mm, which is the same as in the case of FIG. 1B. The light flux from the observation image 14 is formed on the imaging surface of the camera by the lens 20.

By the way, the dimension A is set so that the adapter portion 1 does not rattle in the eyepiece insertion portion 54, that is,
The gap between the outer peripheral surface of the connection portion 4 and the inner peripheral surface of the eyepiece insertion portion 54 is set to be small. Therefore, if the outer peripheral surface of the connection portion 4 is scratched, the insertion will be hindered or the external appearance will be impaired. However, in this embodiment, when the adapter 1 is not used or when the adapter 1A is attached to the C-mount adapter 50, the cylindrical portion 4a is attached by attaching the cover 1B.
Can be prevented from being damaged.

Second Embodiment FIG. 5 is a view showing a second embodiment of the microscope adapter according to the present invention.
0A and an imaging port adapter 30B. In addition,
The same parts as those in the first embodiment are denoted by the same reference numerals. The eyepiece adapter 30A is composed of a lens barrel 3 and a connection part 31 similarly to the first embodiment, and the lens barrel 3 has lenses 20 (20a, 20b, 20c).
Is provided. The connecting portion 31 has a cylindrical portion 31a and a flange portion 31b, and the length of the cylindrical portion 31a is as shown in FIG.
Is equal to the length of the insertion portion 55 of the eyepiece 52 shown in FIG.
22.5 mm).

On the other hand, the imaging adapter 30B includes a cylindrical portion 33 covering the periphery of the cylindrical portion 31a and a C-mount adapter 5.
0 is formed. This photographing port adapter 30B is an eyepiece adapter 30A.
, And is fixed by a set screw 15. A set screw 15 is provided on the outer periphery of the cylindrical portion 31a.
A V groove 31c with which the.

Photographing port 56 of microscope 10 (see FIG. 3)
When the camera is mounted on the camera, the photographing port adapter 30B is attached to the cylindrical portion 31a of the eyepiece adapter 30A as shown in FIG. Connecting. On the other hand, when the camera is mounted on the eyepiece insertion section 54 of the microscope 10 (see FIG. 4),
B is removed, and only the eyepiece adapter 30A is inserted into the eyepiece insertion part 13.

Regardless of whether the camera is mounted on the photographing port 56 or the eyepiece insertion portion 54, the observation image 14 is positioned 10 mm from the end surface 31d of the flange portion 31b, as in the first embodiment. Is imaged. for that reason,
The observation image can be photographed by the camera.

Third Embodiment FIG. 6 is a view showing a third embodiment of the microscope adapter according to the present invention. The microscope adapter 40 includes a lens barrel 40A and a photographing port connecting portion 40B. , Eyepiece connection 4
0C. The lens barrel 40A has the same structure as the lens barrel 3 described above, and includes the lenses 20a and 20a.
b, 20c, which hold down the retaining ring 5 with the screw 4
It is fixed by screwing it into 1. Also lens barrel 4
A threaded portion 3a for connecting a photographing lens is formed at the right end in the figure of 0A.

The photographing port connecting portion 40B forms a cylindrical body, and a screw portion 44 is formed at one end of the cylindrical body, and a screw portion 8 is formed at the other end. This photographing port connection 4
7B can be integrated with the lens barrel 40A as shown in FIG. 7A by screwing the screw portion 44 into the screw portion 41. On the other hand, the eyepiece connection portion 40C is a cylindrical portion 42.
And a flange portion 43. The outer diameter of the cylindrical portion 42 is A and the length is 22.5 mm. Also in the case of the eyepiece connection part 40C, a screw part 44 is formed at the right end in the figure, and by screwing this screw part 44 to the screw part 41, as shown in FIG. It can be integrated with 40A.

As described above, the adapter 40 of the present embodiment
Then, by selectively connecting the photographing port connecting portion 40B or the eyepiece connecting portion 40C to the lens barrel 40A and integrating them, the configuration C as shown in FIG.
It can be set in two forms, such as form D as in (b). In the form C, the camera is connected to the imaging port 56 of the microscope 10.
(See FIG. 3) This is an adapter form when attached to the screw 3a of the lens barrel 40A.
a, and the connection portion 4 for the photographing port using the screw portion 8.
0B is connected to the C mount adapter 50. The observation image 14 by the objective lens is formed at a position of 17.526 mm from the left end surface of the imaging port connection portion 40B. The light flux from the observation image 14 is formed on the imaging surface of the camera by the optical system of the lenses 20a to 20c and the photographing lens 53a.

On the other hand, the form D is an adapter form when the camera is mounted on the eyepiece insertion portion 54 (see FIG. 4) of the microscope 10, and the photographing lens 53a is connected to the screw 3a of the lens barrel 40A, The eyepiece insertion part 5
Insert into 4. In this case, the observation image 14 by the objective lens
Is formed at a position 10 mm from the end face of the flange 43, and the light beam from the observation image 14 is formed on the imaging surface of the camera as in the case of the form C.

In the present embodiment, the photographing port connecting portion 40B and the eyepiece connecting portion 4 are connected to the lens barrel 40A.
By connecting any one of the OCs, the camera can be attached to both the photographing port and the eyepiece insertion section 54. In this case, compared to the conventional adapter which requires the adapter having the lens 20 for each of the photographing port and the eyepiece, in this embodiment, only one set of the lens 20 is required, so that the cost can be reduced. it can. In the above-described embodiment, the case where there are two types of the connection units 40B and 40C has been described. However, three or more types may be provided according to the connection mode of the microscope and the camera. Also in that case, only one kind of lens barrel 40A can be used.

In the correspondence between the embodiment described above and the elements of the claims, the screw portion 3a is a photographing lens connection portion, the adapter portion 1A and the eyepiece adapter 30A are a cylindrical body, and the screw portion 8 is an adapter. Connection part, C mount adapter 5
Reference numeral 0 denotes a photographing device adapter for a microscope, a photographing port adapter 30B a cover member, a lens 20 an optical system, a screw portion 41 a first fastening portion, a screw portion 44 a second fastening portion, and a lens mirror. The tube 40A constitutes a first tubular member, the photographing port connecting portion 40C constitutes a second tubular member, and the eyepiece connecting portion 40B constitutes a third tubular member.

[0030]

As described above, according to the first to third aspects of the present invention, since the adapter connection portion and the cylindrical portion are provided, the imaging device can be used as a microscope imaging device adapter for a microscope and an eyepiece lens insertion portion. Can be attached to any of them.
According to the second and third aspects, the cylindrical portion is protected by the cover member, thereby preventing the cylindrical portion from being damaged. According to the fourth aspect of the present invention, the first cylindrical body to which the photographing lens of the camera can be connected, the second cylindrical state that can be inserted into the eyepiece insertion portion, or the third tube that can be connected to the microscope photographing adapter. Since the tubular body can be selectively fastened and used, the photographing device can be attached to both the photographing device adapter for the microscope and the eyepiece insertion portion of the microscope. According to the fifth aspect of the present invention, since the optical system is an optical system equivalent to an eyepiece of a microscope, it can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 shows a first example of a microscope adapter 1 according to the present invention.
FIGS. 3A and 3B are diagrams illustrating an embodiment of the present invention, in which FIG. 3A illustrates a use mode when the photographing device is mounted on a photographing port, and FIG.
Shows a usage pattern when the photographing device is mounted on the eyepiece lens barrel.

FIG. 2 is a sectional view of an eyepiece used in a microscope.

FIG. 3 is a diagram showing a mounting procedure when the camera 53 is mounted on the photographing port 56 of the microscope 10.

FIG. 4 is a view showing a mounting procedure when the camera 53 is mounted on the eyepiece barrel 11 of the microscope 10.

FIG. 5 is a view showing a second embodiment of the microscope adapter according to the present invention.

FIG. 6 is a diagram showing a third embodiment of the microscope adapter according to the present invention.

FIG. 7 is a view showing a connection form, in which (a) a lens barrel 4;
0A and the connection portion 40B for the photographing port,
(B) shows the case where the lens barrel 40A and the eyepiece connection part 40C are connected.

FIG. 8 is a diagram illustrating a microscope having an imaging port.

[Explanation of symbols]

 1, 30, 40 Microscope adapter 1A Adapter section 1B Cover section 3, 40A Lens barrel 3a, 8, 41, 44 Screw section 4 Connection section 4a, 31a, 33, 42 Cylindrical section 4b, 31b, 43 Flange section 10 Microscope 14 Observation Image 20, 20a to 20b Lens 30A Eyepiece Adapter 30B Imaging Port Adapter 40B Imaging Port Connection 40C Eyepiece Connection 50 C Mount Adapter 53a Imaging Lens 54 Eyepiece Lens Insertion Portion 56 Imaging Port

Claims (5)

[Claims] 1. An adapter for a microscope, comprising: a tubular lens provided at one end of a tubular body for connecting a photographing lens of a camera; and a cylindrical portion provided at the other end to be inserted into an eyepiece insertion portion of the microscope. An adapter connection portion provided at a tip of the cylindrical portion and connected to an imaging device adapter for a microscope, and an imaging surface of the camera provided with the objective lens and the imaging lens of the microscope provided in the cylindrical body. And an optical system for forming an observation image on the microscope. 2. The adapter for a microscope according to claim 1, wherein a cylindrical cover member for covering an outer peripheral surface of the cylindrical portion is detachably provided. 3. An adapter for a microscope, wherein one end of a cylindrical body is provided with a photographic lens connection portion for connecting a photographic lens of a camera, and the other end is provided with a cylindrical portion inserted into an eyepiece insertion portion of the microscope. A cylindrical cover member that covers an outer peripheral surface of the cylindrical portion and has an adapter connection portion for connecting an imaging device adapter for a microscope at an end portion; And an optical system for forming an observation image on an imaging surface of the camera together with the objective lens and the photographing lens. 4. A microscope adapter for connecting a camera having a photographing lens to a microscope, wherein a photographing lens connecting portion for connecting a photographing lens of the camera to one end and a first lens connecting portion for the other end. A first cylindrical body provided with a fastening portion, and having an optical system for forming an observation image on an imaging surface of the camera together with the objective lens and the photographing lens of the microscope; A second tubular body provided with a second fastening portion that can be fastened to the first fastening portion, and a cylindrical portion that is inserted into the eyepiece insertion portion of the microscope body at the other end; A third tubular body provided with the second fastening portion at one end and an adapter connecting portion connected to the microscope imaging device adapter at the other end; One of the third cylindrical bodies is the first cylindrical body. Microscope adapter characterized in that it is selectively engaged. 5. The microscope adapter according to claim 1, wherein an optical system equivalent to an eyepiece of the microscope is used as the optical system.