JP2513327Y2 - Optical element switching slider - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to an optical element switching slider used for switching optical elements such as a microscope.

[Prior Art] In optical instruments such as a microscope and an optical measuring instrument and its accessories, most of various optical elements are switched and inserted into an optical path to inspect. An optical element switching slider is prepared as one of the devices for enabling this switching insertion.

Further, in microscopic observation, the polarizing plate is used as a polarizer and an analyzer in a polarization microscope and a differential interference microscope, and is one of important optical elements. In the optical measuring device, a polarizing plate or a 1 / 2λ plate is often inserted in the optical axis in a rotatable state, or a diaphragm is inserted.

In particular, the polarizing plate requires a precise rotation mechanism in order to create a crossed Nicol state and to measure the polarization state of the sample.

Therefore, a conventional optical element switching slider having a rotating function is provided with two openings 1a, 1b as shown in FIG. 7, for example.
Are arranged side by side and engage with a click pin of the optical device to position the optical device switching slider so that light passes through each opening when the optical device switching slider is inserted into an optical device (not shown). Click groove 1f, 1g
A main body case 1 in which is formed, a polarizing plate 2 is rotatably supported in the opening 1a, a central opening portion is attached with a polarizing plate 2, and a lever 3 protruding from a notch 1e of the main body case 1 is fixed to the outer peripheral portion. It is composed of an annular support frame 4 and a lid 5 which has openings 5a and 5b arranged concentrically with the openings 1a and 1b and is fixed to the main body case 1 by screws (not shown) or the like. .

Further, as shown in FIG. 8, instead of the annular support frame 4, an annular gear 6 rotatably supported in the opening 1a and having a polarizing plate 2 attached to the central opening is provided. In some cases, a small gear 7 that meshes with and partially protrudes from the notch 1e of the body case 1 is pivotally attached to the body case 1.

Further, as shown in FIG. 9, the ring gear 6 is rotatably supported in the opening 1b, and the gear 8 partially protruding from the notch 1e of the body case 1 is provided on the opposite side. There is also one in which the gears 6 and 8 are linked to each other by a timing belt 9 so that the rotation operation can be performed at a position away from the optical axis.

Further, as shown in FIG. 10, in addition to the structure shown in FIG. 9, a disc portion 8a having a diameter larger than that of the gear portion is integrally formed on the gear, and the disc portion 8a
In some cases, the timing belt 9 is not exposed so that the timing belt 9 can be rotated by touching.

[Problems to be solved by the device]

However, the one shown in FIGS. 7 and 8 has a problem that it is often difficult to operate because the operation lever 3 or the pinion gear is close to the optical axis. Also, the one shown in FIG.
Since the movable range of the lever 3 is limited by the width of the notch 1e, it is often impossible to obtain the minimum rotation angle of 90 ° that is necessary to match the vibration direction of the polarizing plate 2 in all cases. was there. Also, the one shown in FIG.
Although a rotation angle of 0 ° can be obtained, there is a problem that the angular scale cannot be provided on the small gear because the number of teeth of the annular gear 6 and the small gear do not match.

In addition, although the one shown in FIG. 9 solves the above problems, the width of the main body case 1 is increased by the amount of the timing belt 9, and a part of the timing belt 9 is exposed to provide a good appearance. Instead, the belt is directly touched during the rotating operation, which causes a slip problem.

In addition, although the problem shown in FIG. 10 has solved this problem, the problem that the main body case 1 becomes large as in the case of FIG. 9 still remains, and the disc portion 8a has a problem. There is also a problem that the body case 1 becomes thick.

In view of the above problems, the present invention is easy to operate, can obtain a rotation angle required for an optical element that needs to be rotated, can provide an angle scale on the operation portion, can configure the main body case compactly, and has an external appearance. Another object is to provide a good optical element switching slider.

[Means and Actions for Solving the Problems]

An optical element switching slider according to the present invention is an optical element switching slider for switching and inserting any one of a plurality of optical elements into an optical path, and is rotatably supported by a plurality of openings arranged in parallel in a slider body. A plurality of annular gears each having a different optical element attached to the central opening or leaving the central opening as a hole, and at least two of the plurality of annular gears have the same number of teeth. The gears are in mesh with each other, and a part of one of the gears protrudes out of the slider body.

That is, the optical element switching slider of the present invention is operated at a position relatively distant from the optical axis because the operating annular gear has a large diameter, and is easy to operate. Further, since the ring gear can rotate 360 °, the rotation angle required for the optical element that requires rotation can be obtained. Further, since the operating annular gear and the annular gear that meshes with the operating annular gear have the same number of teeth, an angular scale can be provided on the operating portion. Further, since the timing belt and the disc portion for special operation are not provided, the width and thickness of the body case are not increased, and the body case can be made compact.
Also, since the timing belt and the like are not exposed, the appearance is good.

〔Example〕

Hereinafter, the present invention will be described in detail based on the illustrated embodiment by assigning the same reference numerals to the same members as those in the conventional example.

1 and 2 are an exploded perspective view and a sectional view of the first embodiment, respectively, in which an annular gear 6 having a polarizing plate 2 attached to a central opening is rotatably supported by the openings 1b and 5b. There is. 1
Reference numeral 0 denotes an operating annular gear that is rotatably supported by the openings 1b and 5b and has a central opening portion that is a hole 11. It has the same number of teeth as the annular gear 6 and meshes with the annular gear 6. In addition, a part thereof projects from the notch 1e to the outside of the main body case 1, and an annular scale that can be further exposed is engraved with an angle scale 10a. When the angle scale 10a is 0 °, the vibrating direction of the polarizing plate 2 is set to coincide with the longitudinal direction or the lateral direction of the body case 1, and the annular gear 6 is rotated in synchronization with the rotation of the annular gear 10. It is designed to be used.

The embodiment of the present invention is configured as described above, and since the operating annular gear 10 has a large diameter, it is operated at a position relatively distant from the optical axis and is easy to operate. Also, the ring gear 10 is 360 °
Since it is rotatable, the rotation angle required for the polarizing plate 2 that requires rotation can be obtained. Further, since the operating annular gear 10 and the annular gear 6 meshing with the operating annular gear 10 have the same number of teeth, the angle scale 10a can be provided on the operating portion, that is, the exposed portion of the annular gear 10. Further, since the timing belt and the disc portion for special operation are not provided, the width and thickness of the main body case 1 are not increased, and the main body case 1 can be made compact.

FIG. 3 is a sectional view of the second embodiment, which shows three openings 1a, 1b, 1c and 5a, 5 in the main body case 1 and the lid 5, respectively.
b, 5c are arranged side by side, an operating annular gear 10 is attached to the openings 1a, 5a, a filter 12 such as an ND filter is attached to the central openings of the openings 1b, 5b, and the annular gear 6 and the number of teeth are The same annular gear 13 and the annular gear 6 having the polarizing plate 2 in the openings 1c and 5c
Rotatably fitted to each other, and further three gears 10, 13, 6
The adjacent ones are made to mesh with each other so that they are interlocked.

This embodiment is configured as described above, and many optical elements such as two different optical elements and one hole can be switched, so that it is possible to handle a multipurpose speculum with simple switching and operation. it can.

FIG. 4 is a sectional view of the third embodiment, which shows the opening 1
A ring gear 10 for operation is provided in a and 5a, and a polarizing plate 2 is provided in openings 1b and 5b.
Each of the annular gears 6 having the above is rotatably fitted, and the opening 5c is rotatably fitted with the annular gear 14 having the same number of teeth as the annular gear 6 and the edge of the opening 1c is shown in FIG. A)
A plurality of diaphragm blades 15 are pivotally attached to each other as shown in the enlarged view of FIG. 3, and a pin 15a fixed to the diaphragm blades 15 and a slot 14a (see FIG. 5 (B)) formed in the annular gear 14 are slid together to form a diaphragm. It consists of 16 parts.

Since this embodiment is configured as described above, the annular gear
When 10 is rotated, the polarizing plate 2 can be rotated and the diaphragm can be adjusted. However, since the rotation range of the annular gear 14 cannot be 360 ° due to the presence of the diaphragm blades 15, the polarizing plate 2 cannot be rotated 360 °.

FIG. 6 is a cross-sectional view of the fourth embodiment, which shows four openings 1a, 1b, 1c, 1d and 5a for the body case 1 and the lid 5, respectively.
5b, 5c, 5d are arranged side by side, respectively, and the first operating annular gear 10 is rotatably fitted in the openings 1a, 5a, and the annular gear 6 having a polarizing plate 2 is rotatably fitted in the openings 1b, 5b. The apertures 1c and 5c are provided with the same diaphragm 16 as in the third embodiment, and the apertures 1d and 5d are provided with the second apertures.
The operating annular gear 10 is rotatably fitted, and the first operating annular gear 10 and the annular gear 6 have the same number of teeth and are meshed with each other, and the second operating annular gear 10 is engaged.
And the ring gear 14 of the diaphragm 16 are engaged with each other, and the ring gear 6 and the ring gear 14 are made independent.

This embodiment is configured as described above, and since the annular gear 6 having the polarizing plate 2 and the annular gear 14 of the diaphragm 16 can be rotated separately, 360 ° rotation of the polarizing plate 2 and adjustment of the diaphragm 16 can be performed. It has the advantage of being independent.

Needless to say, in each of the above-mentioned embodiments, any filter, 1/2 λ plate or the like may be attached to the hole 11.

[Effect of device]

As described above, the optical element switching slider according to the present invention is easy to operate, the rotation angle required for the optical element requiring rotation can be obtained, and the angle scale can be provided on the operation portion, and the body case is compactly configured. It has a practically important advantage of being good and having a good appearance. Further, when the number of optical elements is increased, there is an advantage that a multipurpose speculum can be dealt with by simple switching and operation.

[Brief description of drawings]

1 and 2 are respectively an exploded perspective view and a sectional view of the first embodiment, FIG. 3 is a sectional view of the second embodiment, FIG. 4 is a sectional view of the third embodiment, and FIG. ) And (B) are enlarged cross-sectional views of an essential part of the third embodiment and an enlarged perspective view of an essential part of the rear surface of the annular gear of the diaphragm, respectively. FIG. 6 is a cross-sectional view of the fourth embodiment, and FIGS.
FIG. 10 is an exploded perspective view of each conventional example, and FIG. 10 is an enlarged sectional view of a main part of another conventional example. 1 …… Main body case, 1a, 1b, 1c, 1d, 5a, 5b, 5c, 5d …… Opening, 1e …… Notch, 1f, 1g …… Click groove, 2 …… Polarizing plate, 6,10,13 , 14 …… annular gear, 11 …… hole, 12 …… filter, 14a …… slot, 15 …… stopper blade, 15a …… pin, 16 …… stopper.

Claims (1)

(57) [Scope of utility model registration request] 1. An optical element switching slider for switching and inserting any one of a plurality of optical elements into an optical path, wherein each slider is rotatably supported by a plurality of openings arranged in parallel in a slider body and a central opening. A plurality of annular gears each having a different optical element attached thereto or the central opening portion of which is left as a hole, and at least two of the plurality of annular gears having the same number of teeth mesh with each other. An optical element switching slider, wherein a part of one of them protrudes out of the slider body.