JP2795723B2 - Optical device position adjustment jig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] The present invention relates to a method for adjusting a visual axis position of an optical device, which aims at a method that can easily and accurately adjust the visual axis position, has an opening in the center, and is orthogonal to each other. A slide plate laminated and fixed in a cross shape, a concave portion for fitting the vertical or horizontal slide plate of the cross-shaped slide plate is provided on the back side, holes are provided at four corners, and an optical surface is provided on the surface side. A support plate for holding the member, a groove orthogonal to the concave portion provided in the support plate and having one of the slide plates fitted therein, a screw hole provided in each of four corners, and a support plate for mounting the support plate A jig, and fitting one of the slide plates into the concave portion of the support plate or the groove of the support plate installation jig, installing the support plate on the installation jig, and supporting one of the slide plates on the support jig. In the recess of the plate or in the support plate installation jig Constitute by screwed into place the support plate is moved along the inside.

[Industrial applications]

The present invention relates to a jig for adjusting a visual axis position of an optical device, and more particularly to a position adjusting jig for focusing an optical axis of an optical device on a determined image forming position.

In an optical device such as an infrared imaging device, it is desired that the focal point of the optical lens be coincident with the optical axis of the optical device.

[Conventional technology]

Conventionally, as a method of adjusting the visual axis position of an optical device such that the focal point of such an optical lens coincides with the optical axis of the optical device, screw holes 1 are provided at four corners as shown in FIG. The optical lens is inserted into the opening of the support plate 4 of the optical lens having the opening 3 into which the optical lens 2 is inserted.

Next, a light beam is emitted from the light source 5 along the arrow A direction. Then, the support plate 4 is installed on a support plate installation jig 6,
The support plate is moved along X and the Y direction orthogonal to the X direction so that the surface 11 of the support plate and the surface 12 of the support plate installation jig are rubbed against each other. And screen 7
Focal point 8 of optical lens and optical axis 9 of optical device
The support plate 4 and the support plate installation jig 6 are fastened and fixed to each other by using a screw 10 at a position where と matches.

[Problems to be solved by the invention]

In the above-described conventional method, the support plate 4 is moved to a predetermined position in the X direction on the support plate installation jig 6 so that the focal position of the optical lens and the optical axis of the optical device coincide with each other.
After the support plate 4 and the support plate installation jig 6 are loosely fastened using 10, the support plate 4 is further moved to a predetermined position in the Y direction, and the focal position of the optical lens and the optical device The axis is matched.

However, in this method, as shown in FIG. 6, first, the support plate is moved on the support plate installation jig in the X direction to align the focal position of the optical lens with the optical axis of the optical device. O
Therefore, when the support plate is moved along the Y direction, the support plate may move to the position of the point O 'and may be displaced.

That is, with the conventional visual axis position adjustment method, it is difficult to move the support plate independently in the X or Y direction to align the focal position of the optical lens with the optical axis of the optical device.

This means that when the support plate 4 is moved to a predetermined position in the X direction so that the focal position of the optical lens coincides with the optical axis of the optical device, and then the support plate is moved in the Y direction, This is probably because the plate was not securely fixed to the support plate installation jig.

An object of the present invention is to provide a position adjusting jig for an optical device which can eliminate the above-mentioned problems and can perform position adjustment independently in the X direction and the Y direction.

[Means for solving the problem]

The position adjusting jig of the optical device according to the present invention, which achieves the above object, includes a slide plate having an opening at the center and laminated and fixed in a cross shape orthogonal to each other, and a cross plate on the back side of the cross shape slide plate. A supporting plate for holding an optical member on the front surface side with holes provided at four corners and providing a concave portion to which a vertical or horizontal sliding plate is fitted, and orthogonal to the concave portion provided on the supporting plate, and A slide plate is provided with a groove for fitting one side, a screw hole is provided at each of the four corners, and a support plate installation jig for installing the support plate is provided. One of the plates is fitted, the support plate is placed on the installation jig, and one of the slide plates is moved along the concave portion of the support plate or along the groove of the support plate installation jig to support the support plate. The feature is that the board is fixed in place with screws. Sign.

(Operation)

FIG. 4 is an explanatory view of the principle of the jig of the present invention. In FIG. 4, reference numeral 22 denotes a concave portion 22 provided in the support plate 21 shown in FIG.
Reference numeral 24 in the figure indicates the groove 24 of the support plate installation jig 23 shown in FIG.

4A is the slide plate 25A shown in FIG.
4B shows the slide plate 25B of FIG. 1 (b).

The slide plate 25A of FIG. 1 (b) is fitted into the recess 22 of the support plate 21 of FIG. 1 (a), and the groove 24 of the support plate installation jig 23 of FIG. 1 (c) is inserted into the groove 24 of FIG. 1 (b). Of the slide plate 25B.

Next, as shown in FIG. 4, the slide plate 25B is moved in the X direction along the groove 24 to make a coarse adjustment to focus the optical lens on the optical axis of the optical device. At the time of fine adjustment for moving the focal point of the optical lens 2 to the optical axis of the optical device by moving it in the Y direction along 22, even if it is attempted to rotate in the direction of arrow B from the first alignment point O, The slide plate 25B is an edge 24A of the groove 24.
And is not rotated by the edge 22A of the concave portion 22 and is fixed at the first alignment point O.
Independent alignment can be achieved along the direction.

〔Example〕

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

1 (a), 1 (b) and 1 (c) are perspective views of the position adjusting jig of the present invention.

As shown in FIG. 1 (a), a concave portion 22 into which, for example, a vertical slide plate 25A of the cross-shaped slide plates 25A and 25B shown in FIG.
A support plate 21 having thread holes 27 at four corners and an opening 29 on the front side for fitting and holding an optical lens 28 is prepared.

Further, as shown in FIG. 1 (b), slide plates 25A and 25B having an opening 26 through which light passes in the center and laminated and fixed in a cross shape perpendicular to each other are prepared.

No bending stress is applied to this slide plate, so 1-2m
It may be formed by punching out a suitable steel material with a thickness of about m.

Further, as shown in FIG. 1 (c), the horizontal slide plate 25 orthogonal to the recess 22 provided in the support plate 21 is provided.
A support plate installation jig 23 for installing the support plate 21 is provided by providing a groove 24 into which B is fitted, providing screw holes 31 at four corners.

After the slide plate 25A is fitted to the support plate 21 and the slide plate 25B is fitted to the support plate installation jig 23, a screw 32 for fastening and fixing the support plate to the support plate installation jig is prepared.

The case where the visual axis position is adjusted using such a position adjusting jig of the optical device of the present invention will be described.

As shown in FIG. 2, an optical lens is provided in the opening 29 of the support plate 21.
28, a vertical slide plate 25A is fitted into the concave portion 22 on the back side of the support plate, and a horizontal slide plate 25B is further inserted.
Into the groove 24 of the support plate installation jig 23,
Is set on the support plate setting jig 23.

Next, light is emitted from the white light source 5 to the optical lens, and the lateral slide plate 25B is moved in the X direction so that the focal point 8 of the optical lens coincides with the optical axis 9 of the optical device, and the screw 32 is used. The support plate 21 is loosely fastened to the support plate installation jig 23 to make coarse adjustment.

Next, the support plate 21 is moved in the Y direction along the slide plate 25A, the position where the optical axis 9 and the focal point 8 match is confirmed, and the support plate 21 is further fixed to the support plate installation jig 23 using screws 32. Tighten and fine-tune.

With this configuration, after the support plate 21 is positioned at a predetermined position in the X direction on the support plate installation jig 23, when the support plate 21 is further positioned at a predetermined position along the Y direction, the positioning in the X direction is performed. Positioning in the Y direction can be performed in a state where the position does not move.

FIG. 3 is a perspective view showing an optical device adjusted by such a position adjusting jig of the present invention.

This optical device has a structure in which the slide plate of the present invention is inserted, but since the slide plate is not subjected to bending stress, it may have a thickness of about 1 to 2 mm, which may affect the capacity of the optical device. There is no.

As described above, according to the position adjusting jig of the optical device of the present invention, the optical device can be independently aligned along the X and Y directions. For example, after the optical device is aligned along the X direction, the optical device can be aligned in the Y direction. In the case of positioning along, it is easy to position the initial position positioned in the X direction along the Y direction without fluctuating, and the visual axis adjustment of the optical device can be easily and accurately performed. Becomes

〔The invention's effect〕

As is apparent from the above description, according to the present invention, it is easy to adjust the visual field position of the optical device, and it is possible to form a focal point of an image on the optical axis of the optical device with high accuracy and easily. is there.

[Brief description of the drawings]

1 (a), 1 (b) and 1 (c) are perspective views of a position adjusting jig of the optical device of the present invention, and FIG. 2 is a visual axis position adjusting method using the jig of the present invention. FIG. 3 is a perspective view of an optical device adjusted by the jig of the present invention, FIG. 4 is an explanatory view of the principle of the jig of the present invention, and FIG. 5 is a description of a conventional visual axis position adjusting method. FIG. 6 is an inconvenient state diagram in the conventional method. In the figure, 5 is a light source, 7 is a screen, 8 is a focal point, 9 is an optical axis, 21 is a support plate, 22 is a recess, 22A is an edge of a recess, 23 is a support plate installation jig, 24 is a groove, and 24A is a groove. Edge, 25A, 25B are slide plates, 26,2
9 is an opening, 27 and 31 are screw holes, 28 is an optical lens, and 32 is a screw.

Continuation of the front page (56) References Japanese Utility Model sho 59-45741 (JP, U) Japanese Utility Model sho 59-157228 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G02B 7 / 00

Claims (1)

(57) [Claims] 1. A slide plate having an opening at the center and laminated and fixed in a cross shape orthogonal to each other, and a vertical or horizontal slide plate of the cross-shaped slide plate is fitted on the back side. A supporting plate for holding an optical member, and a groove perpendicular to the concave portion provided in the supporting plate, and having a groove in which one of the slide plates is fitted. A position adjusting jig for an optical device, comprising a support plate installation jig provided with a corresponding screw hole and installing the support plate.