JPH0569717U - Microscope adapter for simple camera - Google Patents

Abstract

(57) [Summary] [Purpose] Make it possible to take clear and clear micrographs with a simple camera. [Structure] An eyepiece receiver 1 and a camera holder 2 which are externally fitted to an eyepiece frame 4 of an eyepiece 3 of a microscope are integrated. A through hole 12 communicating with the inside 20 of the eyepiece receiver 1 is formed in the camera holder 2. Simple camera 8 is camera holder 2
Camera lens 9 when attached to eyepiece 3
It is formed so as to come to the eye point position 22 of.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to an adapter that is interposed between a microscope and a camera when taking a micrograph.

[0002]

[Prior Art]

 Conventionally, there is no dedicated adapter for a disposable camera (hereinafter referred to as a simple camera) that is commercially available under the name of film with lens, camera with film or 35 mm camera with film loaded, and body is made of lightweight material such as paper box. , No photomicrograph is taken with a simple camera.

Micrographs are taken with a single-lens reflex camera or a dedicated camera, and in both cases, an adapter is interposed between the microscope and the camera.

[0004]

[Problems to be solved by the device]

 Since there is no adapter for a simple camera, it is not possible to easily enjoy micrographs with a simple camera. Also, when using a single-lens reflex camera, it is necessary to prepare a dedicated lens. Above all, the camera itself is heavy, so a support stand that supports the camera body is required in addition to the adapter, or the microscope itself has a camera. It is not possible with a small microscope because it requires strength and structure that can support the. A dedicated camera requires complicated functions, which requires complicated equipment such as a complicated and high-strength adapter and is expensive, and since the film is used only for taking a micrograph, it remains after the taking. The film in use is wasted.

[0005]

[Means for Solving the Problems]

 This invention eliminates the above-mentioned inconvenience, has a simple structure, and is capable of taking a micrograph easily and surely with a simple camera, that is, an eyepiece lens receiver fitted on the eyepiece frame of a microscope eyepiece lens. And a camera holder integrated with the eyepiece receiver, and a through hole communicating with the inside of the eyepiece receiver is formed in the camera holder, so that the camera lens is attached to the camera holder when the simple camera is attached to the camera holder. It is characterized in that it is formed so as to come to the eye point position of the eyepiece lens.

[0006]

【Example】

 The embodiment is composed of a plastic eyepiece receiver 1 and a plastic camera holder 2, and the eyepiece receiver 1 is a cylindrical portion to the upper end opening of a cylindrical portion 5 which is fitted onto an eyepiece frame 4 of an eyepiece 3 of a microscope. 5, a collar portion 6 concentric with that of the camera holder 2 is formed, and the camera holder 2 has a recess 11 for fitting a protrusion 10 in which a camera lens 9 of a simple camera 8 is housed in the center of a thick bottom plate 7. Further, a through hole 12 of a circular shape communicating with the concave portion 11 is formed, a fitting portion 13 of the collar portion 6 is formed on the lower surface of the bottom plate 7, and a rectangle that is attached to the body 14 of the simple camera 8 in front of and behind the bottom plate 7. A short plate 15 and a rectangular long plate 16 are provided so as to project, and locking claws 17 and 18 are formed on the upper edges of the rectangular short plate 15 and the rectangular long plate 16. The diameter of the through hole 12 is at least approximately equal to the effective diameter of the eye-side lens 19 of the eyepiece lens 3. Then, the collar portion 6 is fitted into the fitting portion 13 and adhered to the eyepiece lens receiver 1 and the camera holder 2 to be integrated, and the recess 11, the through hole 12 and the inside 20 of the eyepiece lens receiver 1 are communicated with each other. ing. Further, this adapter is formed so that the camera lens 9 comes to the eye point position 22 of the optical axis 21 of the eyepiece lens 3 when the simple camera 8 is attached to the camera holder 2. Here, the eye point is a range on the optical axis where the entire field of view can be seen at one time, that is, the range where the central light beam that passes through the eyepiece of the microscope and is emitted as a parallel light beam and the peripheral light beam intersect on the optical axis. The central point in. Further, the eye point position is usually represented by the distance from the tip of the eye side lens 19 of the eyepiece lens 3, which is predetermined by the eyepiece lens of the microscope to be used, and in this embodiment, it is 6 mm. The thickness of the bottom plate 7 is set so that the distance d in FIG. 1 is 6 mm. The eyepiece of this embodiment is of the Kelner type, but when the distance d to the eyepoint position is different as in other types of eyepieces, the thickness of the bottom plate 7 is changed according to this difference. Just set it. In any case, this adapter may be formed so that the position of the camera lens 9 is at the eyepoint position 22 on the optical axis 21 when the simple camera 8 is attached to the camera holder 2. The holder 2 is not limited to the one in which a separate member is adhered as in the above-described embodiment, and it may be obtained by integral molding or the like as long as they are integrated. Further, the eyepiece lens receiver 1 is not limited to a cylindrical shape, It suffices that the camera holder 2 can be fitted onto the sight frame 4 such as consisting of a plurality of pieces attached to the sight frame 4, and the camera holder 2 is limited to the bottom plate 7, the rectangular short plate 15 and the rectangular long plate 16. However, the simple camera 8 may be held according to the shape of the simple camera 8, and in the case of the simple camera 8 that does not have the protruding portion 10, the concave portion 11 may be omitted.

Next, the method of use of this embodiment will be described. First, the eyepiece 3 is attached to the eyepiece sleeve 23 of the microscope, and the focus is adjusted. Next, the cylindrical portion 5 of the eyepiece lens holder 1 is externally fitted onto the facing frame 4 of the eyepiece lens 3. After that, the simple camera 8 is attached to the camera holder 2 as shown in FIG. At this time, the simple camera 8 is placed on the bottom plate 7, the protrusion 10 is fitted in the recess 11, the body 14 is attached to the rectangular short plate 15 and the rectangular long plate 16, and the claw locking portions 17 and 18 are engaged. It is stopped and becomes immobile. If the shutter 24 of the simple camera 8 is cut off here, a micrograph can be taken. Then, if the specimen is moved or changed, remove the eyepiece holder 1 from the eyepiece frame 4, focus it, and then attach the eyepiece holder 1 again to the eyepiece frame 4 and release the shutter 24. Good. This operation can be performed extremely easily and quickly because the simple camera 8 is lightweight.

Next, the principle of the present invention will be described with reference to FIG. A real image of the object is formed at the position 25 of the field stop through the objective lens (not shown) of the microscope. Since the field stop is placed at the focal point F position of the eyepiece 3 to be used, the light flux after forming a real image once passes through the eyepiece 3 and is emitted as a parallel light flux. The central light beam 26 that passes through the stop position on the optical axis 21 travels as a parallel light beam along the optical axis 21, but the peripheral light beam 27 that passes through the edge of the field stop has a certain angle after passing through the eyepiece 3. It is injected across the shaft 21. Here, the eyes of the observer cannot see the entire visual field at a time unless the central light beam 26 and the peripheral light beam 27 are placed within the range where they intersect on the optical axis 21.

The center point of the range on the optical axis 21 where the entire field of view can be seen at once is an eye point. The eyepoint position 22 is usually represented by the distance from the tip of the eye-side lens 19 of the eyepiece lens 3, and the distance d varies depending on the eyepiece lens 3. If the fact that the light beam emitted from the eyepiece lens 3 is a parallel light beam and that the camera lens 9 of the simple camera 8 is adjusted to infinity in advance here, the camera lens 9 is placed at the eye point position 22. This makes it possible to obtain a focused photographic image through a simple camera. In other words, the collimating method is used for photographing.

In addition, since the aperture angle formed by the light flux around the eyepiece lens of the microscope is generally smaller than the angle of view of the camera, the image appears to be round on the film, but as long as the camera lens is at the eyepoint position, the field diaphragm itself is also captured. This makes it possible to capture the surrounding area in a clear, round shape.

[0011]

[Effect of the device]

 According to this invention, it is possible to easily and clearly take a micrograph with a simple camera, there is no need to purchase a dedicated lens or support stand, and it can be used regardless of the size or strength of the microscope. Moreover, after taking the micrograph, the remaining film can be used without wasting it, and the structure is simple and can be provided at a reasonable price.

[Brief description of drawings]

FIG. 1 is a sectional view showing a usage state of an embodiment of the present invention.

FIG. 2 is a perspective view of a main part of the above.

FIG. 3 is an explanatory diagram of eye points.

[Explanation of symbols]

 1 Eyepiece lens receiver 2 Camera holder 3 Eyepiece lens 4 View frame 8 Simple camera 9 Camera lens 12 Through hole 20 Inside 22 Eye point position

Claims (1)

[Scope of utility model registration request] 1. An eyepiece receiver that is externally fitted to an eyepiece frame of an eyepiece of a microscope, and a camera holder that is integral with the eyepiece receiver. A microphotograph adapter for a simple camera, characterized in that a hole is formed so that the camera lens comes to the eye point position of the eyepiece when the simple camera is attached to the camera holder.