JP2503557Y2 - Eyepiece device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an eyepiece device, and is used as an eyepiece device of a microscope, for example.

[Conventional technology]

This type of device in a conventional microscope having a diopter correction helicoid and a photographic focusing mirror built in the eyepiece itself has a structure as shown in FIGS. In the vertical cross-sectional view of the lens barrel shown in FIG. 6 and the plan view of the lens barrel shown in FIG. 7 (a view taken in the direction of arrow C in FIG. 6), the eyepiece sleeve 12 formed to project from the lens barrel main body 11 is shown. Is the groove 1 in the thrust direction from the body surface 12a.
3 is provided, and the pin 15 screwed to the eyepiece lens 14 shown in FIGS. 8 and 9 attaches the eyepiece lens 14 to the eyepiece sleeve 12
When engaged in the groove 13 engages with the groove 13, the barrel surface 12a of the lens barrel abuts the barrel surface 16a formed by the collar 16 of the eyepiece lens 14,
The mounting of the eyepiece lens 14 on the eyepiece sleeve 12 is completed. At this time, because of the pin 15 that fits in the groove 13, the eyepiece 14
The structure of the main body is restricted so as not to rotate within the eyepiece sleeve 12.

[Problems to be solved by the device]

In the prior art as described above, if an eyepiece lens with a pin is attached to a lens barrel that does not have a groove in the lens barrel sleeve, the pin becomes a limitation when it is inserted, and the lens barrel length of the microscope is larger than the specified value. There is a drawback that it becomes long and impairs the performance of the microscope. Also, the tube of the eyepiece lens of the screwed portion of the pin often cannot be thickened, and if the thread is small and the pin is frequently attached and detached, the thread is crushed and there is a drawback that the pin cannot be mounted, Further, there is a drawback in that the attachment / detachment of a pin requires a complicated tool such as a driver. In view of such conventional problems, the present invention aims to maintain compatibility without changing the length of the lens barrel, without using a tool, and with or without the rotation limitation of the eyepiece.

[Means for solving the problem]

In order to solve the above-mentioned problems, the present invention first forms at least one groove or projection in the thrust direction from the body mounting surface for the eyepiece on the outer circumference of the eyepiece sleeve of the lens barrel, and engages with the groove or projection. A ring having fitting protrusions or grooves inside is fitted to the outer circumference of the sleeve to form an eyepiece tube, and the collar side surface forming the body mounting surface of the eyepiece fitted to the inner circumference of the sleeve is provided with a ring of the ring. An eyepiece for a microscope, characterized in that a groove or a protrusion that fits the protrusion or the groove is formed, and the ring is detachably fitted to the outer circumference of the sleeve. A device, further comprising an eyepiece sleeve outer circumference and an inner circumference of the ring, a projection for preventing the ring from coming off and a groove in which the projection fits, are formed. In addition, at least one groove or projection is formed on the outer circumference of the eyepiece sleeve in the thrust direction from the body-mounting surface for the eyepiece lens, and a ring having a projection or a groove that fits with the groove or the projection is provided inside the sleeve. An eyepiece tube characterized by being removably fitted to the outer periphery, and further, at least one groove or protrusion protruding in the thrust direction is formed in the vicinity of the outer periphery of the body mounting surface of the eyepiece sleeve. The eyepiece tube is configured, and a protrusion or a groove that fits with the groove or the protrusion is formed on a side surface of the brim that forms a body attachment surface of the eyepiece fitted to the inner circumference of the sleeve. It is an eyepiece device.

[Action]

In the present invention, when the eyepiece having the rotation limitation is used for the lens barrel having no limitation, the rotation limitation is on the side surface of the collar forming the surface of the eyepiece body, so that it does not interfere.
It can be used as it is.In addition, when using an eyepiece that does not have a rotation restriction for a lens barrel that has a rotation restriction, the outer diameter of the collar that forms the eyepiece barrel attachment surface must be smaller than the minimum inner diameter of the ring of the eyepiece tube. If the collar has a large outer diameter, it can be used by removing the ring, and each has compatibility.

〔Example〕

1 to 5 show an embodiment in which the present invention is applied to a microscope, and as shown in FIG. 1 and FIG. 2 which is a view taken along arrow A of FIG. A groove 5 is formed on the outer circumference of the eyepiece 2 in the thrust direction from the body attachment surface 2a of the eyepiece lens 2,
A projection 4 provided on the inner diameter of the ring 3 shown in a perspective view in FIG. 3 is fitted in the groove 5 like a key and a key groove. Further, in the collar 10 forming the body-attached surface 10a of the eyepiece 8 shown in FIG. 4 and the arrow B view of FIG. 4, a groove which is fitted to the projection 4 when the eyepiece 8 is inserted into the eyepiece sleeve 2 is formed. 9 is provided. As shown in FIGS. 1 and 3, the ring 3 has another protrusion 6, 6'on its inner diameter.
As shown in the drawing, the projections 6 and 6 ′ are fitted in the grooves 7 and 7 ′ provided on the outer circumference of the eyepiece sleeve 2. The grooves 7 and 7'may be ring-shaped grooves. The ring 3 is made of a material such as a synthetic resin that can be expanded and contracted to some extent so that it can be artificially detached from the sleeve 2, or the inner periphery of the ring 3 and the outer periphery of the sleeve 2 are fitted to each other to some extent so as to be easily deformed. It is configured to have a gap. In the above configuration, in the case of the combination of the lens barrel and the eyepiece, the projection 4 provided on the ring 3, the eyepiece sleeve 2, and the grooves 5 and 9 of the eyepiece 8 serve to limit the rotation of the eyepiece. That is,
The protrusion 4 of the ring 4 is fitted into the groove 5 of the eyepiece sleeve 2 and the rotation of the ring 4 is restricted. When the attaching surface 10a abuts, the collar 10 of the eyepiece lens
The groove 9 is fitted into the protrusion 4 and its rotation is restricted. When inserting an eyepiece having no rotation limitation into the eyepiece sleeve 2, when the outer diameter of the collar 10 forming the body-attached surface 10a of the eyepiece 8 is smaller than the inner diameter of the protrusion 4 of the ring 3, the collar 10 is a protrusion. Since it does not hit the lens 4, the lens 8 can be inserted until the protrusions 4 do not hinder and the body attachment surfaces 2a and 10a come into contact with each other.
Can not be inserted any further, but the ring 3 is attached to the eyepiece sleeve 2
It can be inserted until the body-attached surfaces 2a, 10a come into contact with each other by removing the body from the body without any trouble. When the eyepiece lens shown in FIGS. 4 and 5 is used for a normal lens barrel (without a rotation stopper), the eyepiece sleeve of the normal lens barrel has no restraint and is used as it is. be able to.

In the above embodiment, the eyepiece sleeve 2 and the ring 3 are detachable, so that even if the projection 3 is formed on the ring 3, it is possible to combine with any eyepiece lens. Are limited in type,
In the case where the outer circumference of the collar of the eyepiece lens that does not need to be restricted has a small diameter that does not interfere with the ring inner diameter projection 4, the eyepiece sleeve 2 and the ring 3 may be fixed, and the function of the ring 3 may be added. It may be held by itself.

Further, although the above-described embodiments are applied to a microscope, the present invention can be widely applied to an optical device having an eyepiece lens.

[Effect of device]

As described above, according to the present invention, the rotation limitation of the eyepiece is outside the body attachment surface of the eyepiece sleeve of the lens barrel and the eyepiece, so that compatibility between the rotation limitation and the rotation limitation is possible. There is. Further, since the rotation limit is not screwed to the thin portion, there is an effect that the rotation limit cannot be attached due to crushing of the screw thread due to attachment / detachment of the rotation limit, and the failure is unlikely to occur.

Further, by making it possible to artificially remove the rotation limitation of the lens barrel, it becomes possible to use an eyepiece lens having a diameter large enough to come into contact with the rotation limitation of the lens barrel.

[Brief description of drawings]

FIG. 1 is a sectional view of an eyepiece tube according to the present invention, and FIG.
FIG. 3 is a perspective view of the ring 3, FIG. 3 is a perspective view of the ring 3, FIG. 4 is a side view of the eyepiece according to the present invention, FIG. 5 is a perspective view of FIG. 4B, and FIG. FIG. 7 is a sectional view of the cylinder, FIG. 7 is a view taken in the direction of arrow C in FIG. 6, FIG. 8 is a side view of a conventional eyepiece lens, and FIG. 9 is a view taken in the direction of arrow D in FIG. [Explanation of symbols of main parts] 2 ... eyepiece sleeve, 2a ... body attachment surface, 3 ... ring, 4
…… Ring inner diameter protrusion, 5 …… Lens barrel sleeve groove, 9 …… Eyepiece groove, 10 …… Tsuba, 10a …… Body surface.

Claims (5)

(57) [Scope of utility model registration request] 1. At least one groove or projection is formed in the thrust direction from the body mounting surface for the eyepiece on the outer circumference of the eyepiece sleeve of the lens barrel, and the inside of the projection or groove is fitted with the groove or projection. A groove is formed by fitting a ring to the outer circumference of the sleeve to form an eyepiece tube, and a flange side surface that forms a body mounting surface of an eyepiece fitted to the inner circumference of the sleeve, and is fitted with a protrusion or groove of the ring. Alternatively, an eyepiece device formed by forming a protrusion. 2. The eyepiece device according to claim 1, wherein the ring is detachably fitted to the outer circumference of the sleeve. 3. The eyepiece device according to claim 2, wherein a protrusion for preventing the ring from coming off and a groove into which the protrusion fits are formed on the outer periphery of the eyepiece sleeve and the inner periphery of the ring. Characteristic eyepiece device. 4. A ring having at least one groove or projection formed on the outer circumference of the eyepiece sleeve in the thrust direction from the body-mounting surface for the eyepiece lens, and having a projection or groove which fits into the groove or projection inside. An eyepiece tube, which is detachably fitted to the outer circumference of the sleeve. 5. An eyepiece tube which is formed in the vicinity of the outer circumference of the body-attaching surface of the eyepiece sleeve in the thrust direction to form at least one groove or protrusion to form an eyepiece tube, which is fitted to the inner circumference of the sleeve. An eyepiece device, characterized in that a protrusion or a groove that fits with the groove or the protrusion is formed on a side surface of a brim forming a body mounting surface.