JPH07191246A - Optical member holder - Google Patents

Abstract

PURPOSE:To facilitate exact positioning of an optical member. CONSTITUTION:This optical holding member has a supporting base 35 which supports the optical member and a base plate 11 which has guide grooves 50, 51 for guiding the movement of this supporting base 35 and fixes and supports the supporting base 35. The supporting base 35 has fitting projections 37 for positioning the supporting base 35 by fitting to these guide grooves 50, 51 and fixing fittings 41 which detain nuts 43 with the guide grooves 50, 51 and tighten and fix these nuts to the contact surfaces between the supporting base 35 and the base plate 11 from a direction perpendicular thereto. The guide grooves 50, 51 have contact surfaces 53 which exactly position the supporting base 35 by coming into contact with the fitting projections 37 from both sides thereof and expanded groove parts 54 which exist on the deep side of the contact surfaces 53 and are formed to expand from the spacing between the contact surfaces 53 to detain the nuts 43 of the fixing fittings 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention corresponds to optical members such as a lamp house and a resonance mirror used for a laser marker, an optical experimental device, etc., under a predetermined positional relationship (for example, on the same optical axis). The present invention relates to an optical member holding device that is arranged and held at a predetermined interval, and particularly to an optical member holding device that can adjust the positional relationship of each optical member with high accuracy and easily.

[0002]

2. Description of the Related Art Generally, as an optical member holding device for holding various optical members, one shown in FIG. 11 is known.

Reference numeral 1 in the drawing is a base. A guide rail 2 is provided above the base 1. This guide rail 2
Is formed in an inverted trapezoidal shape.

Reference numeral 3 is a support for supporting the optical member. Optical members such as a lamp house and a resonance mirror are attached to the support base 3. That is, one optical member is attached to one support base 3. A dovetail groove 4 is formed on the lower surface of the support base 3. By fitting the dovetail groove 4 into the guide rail 2, the support base 3 is fixedly supported by the base 1.

The support base 3 is divided into two, one (right side) of which serves as a main body portion 3A for supporting each optical member, and the other is attached by a bolt 5 which grips the groove 4 depending on the degree of tightening of the bolt 5. Then, it becomes a fixing piece 3B for fixing the support base 3 to the base 1. This allows bolt 5
The support base 3 is moved to a predetermined position in a state where it is loosened, and the bolt 5 is tightened to hold the guide rail 2 by the main body portion 3A and the fixing piece 3B, so that the support base 3 is fixed to the base 1 side. Has become.

In this structure, the side surface 4A on the main body 3A side of the dovetail groove 4 of the support base 3 and the right side surface 2A of the guide rail 2 are mirror-finished, and these surfaces 4A, 2A are formed.
The optical members are positioned with reference to.

The support base 3 is appropriately set to a size suitable for each optical member, and is adjusted to a position corresponding to each optical member.

[0008]

However, when the guide rail 2 is laterally gripped by the bolt 5 as a means for fixing the support base 3 to the guide rail 2 side, the following problems occur. is there.

(1) Although it is easy to move the support base 3 by loosening the bolts 5, the support base 3 is used as the base 1.
When it is fixed to, sufficient accuracy cannot be obtained. That is, by tightening the bolt 5, the position of each optical member is adjusted with reference to the side surface 4A of the dovetail groove 4, but a slight deviation occurs depending on the degree to which the bolt 5 is tightened. Therefore, there is a problem that fine adjustment must be performed after tightening the bolt 5.

(2) Further, if the tightening force of the bolt 5 is increased, the guide rail 2 or the support base 3 is subtly deformed, which further deteriorates the accuracy.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an optical member holding device capable of easily performing accurate positioning of an optical member.

[0012]

In order to solve the problems, an optical member holding device according to the present invention comprises a support base for supporting optical members arranged at intervals in a predetermined positional relationship, In an optical member holding device having one or a plurality of guide grooves for guiding the movement of the support base and a base for fixedly supporting the support base, the support base is fitted into the guide grooves and the support is provided. A fitting protrusion for positioning the base and an enlarged tip head are locked in the guide groove and tightened from a direction perpendicular to the contact surface between the support and the base to form the base. A fixing metal fitting for fixing to the base side, the guide groove contacting the fitting projection from both sides thereof to accurately position the support base, and a position on the back side of the contacting surface. Is formed so as to be wider than the distance between the contact surfaces, And having a larger groove and the sealed are.

[0013]

In the optical member holding device according to the present invention, each support base is mounted at a predetermined position on the base while supporting various optical members one by one. When performing the positioning adjustment of the support base, the support base is displaced to a predetermined position.
At this time, the fitting protrusion of the support is fitted in the guide groove of the base and is supported by the abutment surface thereof, and the support is displaced to a predetermined position with respect to the base while sliding. The support is accurately positioned with respect to the base when it is moved to a predetermined position.

Next, the fixing metal fitting is tightened in a direction perpendicular to the contact surface between the support base and the base, with the tip of the fixing metal fitting in the enlarged groove portion of the guide groove.
As a result, the support base is securely fixed to the base base while maintaining its position accurately and without causing displacement in the contact surface with the base base.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an optical member holding device according to the present invention will be described below with reference to the drawings. Here, a case where the optical member holding device is used as a laser marker will be described as an example. FIG. 4 is a front view showing the laser marker, and FIG. 5 is a plan view showing the laser marker.

Reference numeral 11 in the drawing is a base. On the base 11, a lamp house 12, resonator mirrors 13, 14, Q
The switch 15, the shutter 16 and the like are arranged on the optical axis.

The lamp house 12 has a laser rod and an excitation lamp (both not shown) provided in parallel inside thereof, and the excitation rod excites the laser rod. The resonator mirrors 13 and 14 resonate the laser light generated in the lamp house 12.
It is arranged on both sides with 2 in between. The Q switch 15 is for adjusting the Q value when the lamp house 12 and the resonator mirrors 13 and 14 resonate to obtain a high-power laser beam, and is mounted between the lamp house 12 and the resonator mirror 13. Has been. The shutter 16 is used to forcibly stop the resonance, and shields the optical axis (not shown).
Block with and stop the resonance of the laser light.

In addition to the above, a beam expander 18 for expanding the laser beam diameter, an irradiation unit 19 for irradiating an object to be marked with laser light, a semiconductor laser device 20, and a pinhole 21 are provided on the base 11. It is installed.
The irradiation unit 19 controls the laser beam expanded by the beam expander 18 in the X and Y directions to draw marks on the object and the galvano mirrors 23 and 24, and focuses on the surface of the object whose distance differs depending on the irradiation position. And an f.theta. Lens 25 for adjusting. The semiconductor laser device 20 outputs laser light in the visible region to an optical system and aligns each optical member on the optical axis. Specifically, the visible light laser 2
7 and two mirrors 28 and 29 for guiding the laser light from the visible light laser 27 to the optical axis. Note that reference numerals 30 and 31 are protective covers.

In the laser marker having the above construction, the lamp house 12, the resonator mirrors 13 and 14, the Q switch 1
5, the shutter 16, the beam expander 18, the semiconductor laser device 20, and the pinhole 21 are provided with support bases that respectively support these optical materials. Although the support bases of the respective devices are different in size, shape, etc., here, the support bases of the respective devices are represented by the support bases 35 shown in FIGS. 1 to 3, 6 and 7.

As shown in the figure, the support base 35 is formed in a flat plate shape, and a guiding protrusion 36 is formed on the lower side surface thereof. The guiding raised portion 36 is formed by extending the lower surface of the support base 35 into a rectangular cross section and extending over the entire length of the support base 35 (in the vertical direction in FIG. 6). The guide protrusion 36 is fitted into a guide groove 49 of the base 11, which will be described later, and is guided. Further, a fitting protrusion 37 is formed on the lower side surface of the support base 35 in parallel with the guide protrusion 36. The fitting protrusions 37 are formed so as to fit the widths of the guide grooves 50 and 51, which will be described later, so as to be closely fitted to the guide grooves 50 and 51. Further, the fitting protrusion 37 is formed over the entire length of the support base 35, similarly to the guide protrusion 36.

Bolt holes 38 are provided at four positions of the support base 35 corresponding to the guide grooves 50 and 51, and fixing brackets 41 (see FIG. 1) are attached. The fixing fitting 41 is composed of a fixing bolt 42 and a nut 43. Note that, here, the nut 43 is used as the enlarged head portion of the fixing bracket 41. The nut 43 fits into the enlarged groove portion 54 described later.

Numeral 45 is a bolt hole formed on both side edges sandwiching the guiding ridge 36 to fix each optical member mounted on the upper side of the support base 35.

As shown in FIGS. 8 to 10, the base 11 is formed into a substantially rectangular flat plate shape as a whole. Two strip-shaped raised portions 47 and 48 are formed on the upper surface of the base 11 over the entire length thereof. This ridge 47,4
The reference numeral 8 is provided at a position near the center of the upper side surface of the base 11, parallel to the longitudinal direction thereof. This strip-shaped ridge 47, 48
A guide groove 49 is formed between the guide ridges 36 of the support base 35 to prevent the support base 35 from shifting in the left-right direction (left-right direction in FIG. 8).

Guide grooves 50, 51 are formed at the upper ends of the strip-shaped raised portions 47, 48 in the longitudinal direction and over the entire length. The guide grooves 50 and 51 are formed so as to open upward. A contact surface 53 is formed on the upper portion of the inner side surfaces of the guide grooves 50, 51. The contact surface 53 contacts the fitting protrusion 37 from both sides in a state where the fitting protrusion 37 is fitted, and accurately positions and supports the support base 35. Both side surfaces of the fitting protrusion 37 and the contact surface 53 are mirror-finished. Furthermore, the strip-shaped ridges 47, 48
Mirror finish is also applied to the upper side surface and the lower side surface of the support base 35 which is in sliding contact with the strip-shaped raised portions 47 and 48.

Of the guide grooves 50, 51, an enlarged groove portion 54 is formed on the inner side (lower side in FIG. 8) of the contact surface 53. The enlarged groove portion 54 is formed so as to be wider than the interval of the contact surface 53, and the nut 43 which is the tip end head portion of the fixing metal fitting 41 is locked. The enlarged groove portion 54 is set to such a size that the nut 43 can be loosely fitted therein and moved in the enlarged groove portion 54, and that the enlarged groove portion 54 does not rotate.

In the optical member holding device constructed as described above, each optical member is positioned and fixed as follows.

The support base 35 supporting each optical member is placed on the strip-shaped raised portions 47 and 48. At this time, the fixing bolts 42 of the fixing metal fittings 41 are attached to the bolt holes 3 of the support base 35.
8 is extended to the guide grooves 50 and 51, and the guide groove 5
It is screwed into the nut 43 fitted into the 0, 51 enlarged groove portions 54. The fixing bracket 41 is in a loosened state. Laser light from the visible light laser 27 of the semiconductor laser device 20 is passed on the optical axis of the laser marker by the mirrors 28 and 29. Based on this laser light, each support 35
Is moved to a predetermined position between the respective optical members to perform positioning adjustment.

At this time, the fitting projections 37 of the support base 35 are fitted into the guide grooves 50, and both sides of the fitting projections 37 are in contact with the contact surfaces 53 of the guide grooves 50. When they are moved, they are accurately supported with respect to the base 11 without shifting to the left or right. Therefore, when the support base 35 is displaced to a predetermined position, the accurate positioning of the support base 35 with respect to the base 11 is completed.

After the support base 35 is accurately positioned,
Tighten the fixing bolts 42 of the fixing bracket 41 to support the support base 3
5 is fixed to the base 11 side. At this time, the nut 43, which is the front end of the fixing bracket 41, is fitted and locked in the enlarged groove portion 54 of the guide grooves 50 and 51. By tightening the fixing bolts 42, the fixing brackets 41 are fixed to the support base 35 and the base 1.
These are clamped and fixed to each other in a direction perpendicular to the contact surface between the two.

In this way, the fixing bracket 41 is used to support the support base 35.
By tightening these from the direction perpendicular to the contact surface between the base 11 and the base 11, in the state where the support base 35 is fixed to the base 11, forces act on the contact surfaces in directions deviating from each other. Disappears. Further, in the direction perpendicular to the contact surface, the lower surface of the support base 35 and the strip-shaped ridge 4 are formed.
7, 48 contact with the upper side surface of the support base 35,
However, since these parts have a large contact area with each other and are firmly supported, deformation and the like due to overtightening hardly occur.

As a result, the support base 35 is securely fixed to the base 11 without any positional deviation on the contact surface with the base 11 while maintaining its position accurately.

As a result, the optical members can be accurately positioned easily, and after the positioning, the optical members can be securely fixed without being displaced.

Although the fitting projection 37 is formed over the entire length of the support base 35 in the above embodiment, it may be formed as a partially raised projection.

Although only one fitting protrusion 37 is provided,
Two guide grooves 50 and 51 may be provided in combination. Even when the fitting protrusion 37 is formed as a partially raised protrusion, it may be provided in accordance with the guide grooves 50 and 51.

In the above embodiment, two strip-shaped raised portions 47 and 48 are provided, and two guide grooves 50 and 51 are provided in accordance with the two raised portions. However, one or three or more guide grooves 50 and 51 are also provided. Good.

In the above-described embodiment, the enlarged groove portion 54 is used as the contact surface 5.
Although it is formed so as to be expanded from the contact surface 53 to both sides on the back side of 3, it may be formed to be expanded to only one side. Any shape may be used as long as the tip of the fixing bracket 41 can be locked.

Further, although the nut 43 is used as the tip head of the fixing bracket 41, the head of the fixing bolt 42 may be used as the tip head. Also by this, the same operation and effect as described above can be obtained.

As means for tightening the fixing metal fitting 41, in addition to means for tightening with a screw, other means such as means for tightening using the lever principle or means using the elastic force of a spring may be used.

[0039]

As is apparent from the above description, in the optical member holding device according to the present invention, the fitting projection of the support is fitted into the guide groove of the base and is supported by the abutment surface for positioning. Therefore, the accurate positioning of each optical member can be easily performed.

Furthermore, since the contact surface between the support base and the base is tightened from the direction perpendicular to the contact surface, the support base can be securely fixed to the base without causing positional displacement.

[Brief description of drawings]

FIG. 1 is a side view showing an optical member holding device according to the present invention.

FIG. 2 is a partial front view of the optical member holding device shown in FIG.

FIG. 3 is a partial plan view of the optical member holding device shown in FIG.

FIG. 4 is a front view showing a laser marker using an optical member holding device.

5 is a plan view of the laser marker shown in FIG.

FIG. 6 is a plan view showing a support base.

FIG. 7 is a side view of the support base of FIG.

FIG. 8 is a side view showing a base.

9 is a plan view of the base shown in FIG. 8. FIG.

10 is a front view of the base shown in FIG.

FIG. 11 is a schematic configuration diagram showing a conventional optical member holding device.

[Explanation of symbols]

11 ... Base, 35 ... Support, 36 ... Guidance ridge, 37
... Mating protrusions, 41 ... Fixing metal fittings, 42 ... Fixing bolts, 4
3 ... Nuts, 47, 48 ... Band-shaped ridges, 50, 51 ... Guide grooves, 53 ... Abutment surface, 54 ... Enlarged groove portions.

Claims (1)

[Claims] 1. A support base for supporting optical members arranged at intervals based on a predetermined positional relationship, and one or a plurality of guide grooves for guiding the movement of the support base, and the support base. In an optical member holding device provided with a base for fixed support, the support base fits into the guide groove and a fitting protrusion for positioning the support base, and an enlarged tip head part in the guide groove. A fixing metal fitting that locks and locks the support base to the base side by tightening from a direction perpendicular to the contact surface between the support base and the base base, and the guide groove includes the fitting member. The abutment surface that abuts on the protrusion from both sides to accurately position the support base, and the tip head portion of the fixing bracket that is formed deeper than the abutment surface and is formed to be larger than the distance between the abutment surfaces. An optical member holding device having an enlarged groove portion to be locked.