JPH0614173Y2 - Centering mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an optical device, and more particularly to a centering mechanism for holding an objective lens of a microscope to perform centering.

[Prior Art] Conventionally, a centering mechanism of this type has a rotating mechanism and a biaxial (X,
A moving mechanism in the Y direction is not incorporated, and the centering is performed by using the parallel movement of the objective lens supported by three points. (Fig. 2 (a), (b)).

In the figure, 21 is a holding unit attached to the revolver, 2
3 is a holding plate, 24 is a rotating unit, and 26 is a moving unit. The holding unit 21 is fixed to the rotation unit 24 with a fixing screw 22. In addition, the moving unit 26
Is attached to the rotary unit 24 by a holding plate 23 so as to be movable within a predetermined range.
By adjusting the three moving screws 25 of No. 4, the objective lens attached to the moving unit 26 is centered.

[Problems to be Solved by the Invention] Although the conventional centering mechanism described above is suitable for aligning the center of the visual field of each objective lens when using a plurality of objective lenses, one objective lens is used. In that case, there is a drawback in that it is impossible to move the field of view of the objective lens to an arbitrary position and rotate the objective lens at that position to confirm whether or not it is the center of the field of view.

[Means for Solving the Problems] The present invention which solves the above-mentioned conventional drawbacks, in a centering mechanism for centering an objective lens used in a microscope, a holding unit attached to a revolver of the microscope, and the holding unit. A first rotation unit fixed to the unit and having XY push screws in the two X and Y axis directions, and a stepped cylindrical shape having three steps, and a slip surface made of planes orthogonal to each other in the middle step portion thereof. An XY moving unit that is housed inside the first rotating unit and moves in the two X and Y axis directions with respect to the first rotating unit by bringing the XY push screw into contact with the sliding surface, and the XY moving unit. And a second rotation unit that holds the objective lens and is rotatably attached to the XY moving unit. It is configured.

[Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

1 (a) and 1 (b) are a longitudinal sectional view and an exploded perspective view of an embodiment of the present invention.

The holding unit 1 is a portion to be attached to the revolver, and fixes the first rotation unit 4 with a fixing screw 2 so as not to drop. The holding plate 3 is screwed into the XY moving unit 8 so as to sandwich the first rotating unit 4. Thereby, the XY moving unit 8 is movably attached to the first rotating unit 4. The first rotation unit 4 can be freely rotated by loosening the fixing screw 2.

As shown in the figure, the XY moving unit 8 is formed in a stepped shape with three steps, in which sliding surfaces 8a, 8a orthogonal to each other are formed in the middle step portion, and the second step is provided at three points in the lower step portion.
A rotary unit fixing screw 9 is provided. The XY push screw 5 of the first rotation unit 4 pushes the slide surfaces 8a, 8a of the XY moving unit 8 via the XY slide plate 7, and
The moving unit 8 can be independently moved in the X and Y directions. In addition, the first rotation unit 4 and X
A push spring 6 is interposed between the Y moving units 8. The push spring 6 pushes the XY moving unit 8 toward the XY push screw 5 so that the XY push screw 5 works effectively. The XY slide plate 7 is a spacer that the XY moving unit 8 moves smoothly.

The second rotation unit fixing screw 9 of the XY moving unit 8 is
The second rotating unit 10 is held as shown.

The second rotation unit 10 is a portion that holds the objective lens, and can be rotated by loosening the second rotation unit fixing screw 9.

Next, the usage will be described. Usually, the holding unit 1 is attached to the revolver. The objective lens is attached to the second rotation unit 10.

First, the fixing screw 2 is loosened, the first rotary unit 4 is rotated so that the XY push screw 5 is located at a position where it can be easily used, and then the fixing screw 2 is fixed. Next, using the XY push screw 5, the XY moving unit 8 is moved in the X and Y directions to change the field of view of the objective lens, and the second rotating unit 10 is rotated each time to rotate the objective lens. At this time, it is found that the center of the visual field does not move even if the objective lens is rotated. When it comes to such a position, the center of the objective lens coincides with the center of the visual field.

[Advantages of the Invention] As described above, the present invention is a centering mechanism for centering an objective lens used in a microscope, and pushes in two axial directions X and Y attached to a revolver of the microscope.
A unit having a Y push screw, and an XY that moves in the biaxial directions of X and Y by the XY push screw with respect to the unit.
By including a moving unit and a rotating unit that holds the objective lens and is rotatably attached to the moving unit, the objective lens can be moved in the XY directions while being rotated to align the center of the objective lens with the center of the visual field. There is an effect that can be done.

As described above, according to the centering mechanism of the present invention, the objective lens of the microscope can be easily and accurately centered without using a special tool, and the simple structure makes the assembly of the mechanism very easy. There is the effect that there are few failures.

[Brief description of drawings]

1 (a) and 1 (b) are a longitudinal sectional view and an exploded perspective view of a centering mechanism according to an embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are conventional centering mechanisms. It is a longitudinal cross-sectional view and an exploded perspective view. 1: Holding unit, 2: Fixing screw 3: Holding plate, 4: 1st rotation unit 5: XY push screw, 6: Push spring 7: XY slide plate, 8: XY moving unit 9: Second rotation unit fixing screw 10 : Second rotation unit

Claims (1)

[Scope of utility model registration request] 1. A centering mechanism for centering an objective lens used in a microscope, a holding unit attached to a revolver of a microscope, and an XY push screw fixed to the holding unit in two axial directions of X and Y. And a first rotary unit having a stepped cylindrical shape having three steps, and a middle surface of the first rotary unit having sliding surfaces made of planes orthogonal to each other. An XY moving unit that moves in the X and Y biaxial directions with respect to the first rotating unit by contacting the sliding surface, a pressing spring that presses the XY moving unit in the XY pressing screw direction, and an objective lens. And a second rotation unit that is attached to the XY moving unit so as to be rotatable with respect to the XY moving unit.