JP2003302600A - Line laser module and manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laser module in which the center line of the main body coincides with that of radiant light beams, making accurate marking possible as it is without needing readjustment, and also to provide the manufacturing method. <P>SOLUTION: In the manufacturing method of the line laser module, a laser diode and an aspherical lens are made freely slidable using a slide frame to form, in the front, a module frame with a rod lens mounting frame arranged. While the module frame is placed on the XY table, angle measuring equipment is placed on the opposite side, making collimating adjustment as well as feeding back the measured data to the XY table, with the optical axis of the laser beam adjusted relative to the aspherical lens to fix the module frame. The structure is characterized in that the module frame is placed on a fixture whose perpendicularity is secured, so that the rod lens is vertically fixed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line laser module for converting a single light emitted from a laser diode into a linear shape and using the linear laser module for marking in construction and civil engineering, and a method for manufacturing the same.

[Prior art]

A conventional line laser module is shown in FIG.
As shown in (A), an aspherical lens that performs collimation adjustment is opposed and fixed to a laser diode that serves as a light source, and a rod lens that bends light linearly is arranged at the focal position of the aspherical lens. . However, in this manufacturing method, since the laser die auto and the aspherical lens are not accurately centered, the light incident on the lot lens does not hit the rod lens vertically, and as a result, it is originally a straight line. The emitted light from the rod lens, which should be Therefore, in order to correct this, a means for adjusting the inclination of the rod lens and correcting the curvature of the emitted light in a straight line is adopted. However, in such a method, the curvature is corrected at a position deviated from the center point of the module,
As a result, the center line of the radiated light does not match the laser module body, and it is not possible to accurately mark the ink as it is.Therefore, it is necessary to readjust when mounting the laser module on the body. (See FIG. 1B).

[0003]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned drawbacks, and the laser module main body and the center line of the radiated light coincide with each other, and accurate marking is performed as it is without the need for re-adjustment. The present invention provides a laser module and a manufacturing method thereof.

[0004]

According to the line laser module of the present invention as set forth in claim 1, the laser diode and the aspherical lens are made slidable by a slide frame, and a mounting frame for the rod lens is arranged at the tip thereof. A laser module in which a laser diode and an aspherical lens are fixed to the module frame with the collimation adjustment and the optical axis adjusted, and the rod lens is vertically fixed to the rod lens mounting frame. It is characterized in that the main body and the center line of the emitted light coincide with each other.

According to a second aspect of the present invention, there is provided a method of manufacturing a line laser module, wherein a laser diode and an aspherical lens are slidable by a slide frame, and a rod lens mounting frame is provided at the front of the module frame. And make XY on the laser diode side of the module frame.
While the table is placed on the table, the angle measuring machine is placed opposite to the opposite side, and the slide frame is moved back and forth to adjust the collimation. At the same time, the angle data measured by the angle measuring machine is fed back to the XY table to laser the laser. Adjust the optical axis of the light with respect to the aspherical lens, fix the module frame including the die doddle and the aspherical lens with the adhesive prepared in advance in the adjusted state, and place the module frame on the jig whose verticality is secured. Then, the rod lens is vertically fixed to the rod lens mounting frame.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described based on the following drawings. In FIG. 1, 1 is a module frame 1
Then, the slide frame 4 is formed at the tip of the fixed table 3 on which the laser diode 2 is arranged, and the slide frame 6 extending from the aspherical lens 5 is fitted so that the slide frames 4 and 6 are movable in the front-rear direction. And a mounting frame 7 for fixing a rod lens after the aspherical lens 5 is formed.

Once the module frame is created, then
As shown in FIG. 2, place the laser diode side on X
A Y table is placed, and a laser angle measuring machine that measures the angle by capturing the optical axis is placed on the opposite side.

First, the slide frames 4 and 6 of the module frame 1 are moved to perform collimation adjustment for matching the distance between the laser diode and the aspherical lens.

Next, when the collimating adjustment is completed, X
The Y table is operated to change the position of the laser diode 2 placed on the Y table in the vertical and horizontal directions, and the angle of the laser beam is measured by a laser angle measuring device which is placed oppositely, that is, the bending of the optical axis of the laser. To measure. Then, the measured data is digitized and fed back to the digitized XY table side, and adjustment by the XY table is performed until the bending of the laser light approaches zero as much as possible. At this time, a laser angle measuring instrument LA-2000 manufactured by Keyence Corp. can be used as the laser angle measuring instrument, its resolution can be measured up to an accuracy of 5 seconds, and the bending of the optical axis of the laser can be accurately adjusted. Becomes Moreover, the digitized measured value can be managed by a numerical value regardless of the visual measurement or the like.

When the collimation adjustment and the XY table adjustment are completed, the laser light emitted from the diode and the aspherical lens are collimated and the optical axes are parallel to each other. The ultraviolet curable adhesive previously applied in step 1 is irradiated with ultraviolet rays to fix the whole. The ultraviolet curable adhesive, for example,
Loctite is available.

Next, the module frame is placed on the jig 10 having verticality. The jig 10 having verticality is as shown in FIG. 11 is provided, support pillars 12 and 13 are arranged on the left and right sides thereof, and springs 12a and 13a for pressing are arranged on the upper parts of the support pillars 12 and 13, and left and right support is provided at the bottom dead center of the springs 12a and 13a. It is constructed by straddling a pillar and disposing a holding frame 14. With respect to the jig 10, the rod lens 6 is attached to the attachment frame 7 of the module frame 1 fixed with the adhesive, and the rod lens 6 is brought into contact with the horizontal surface 11a of the lower base 11, while the upper portion is held by the holding frame 14 Hold down. Then, the rod lens 6 is held down by the horizontal surface 11a and maintained horizontal over the entire length, while the module frame 1 is supported by the support frames 12 and 13, and the verticality is accurately ensured. Therefore, in the same manner as described above, the pre-applied ultraviolet curable adhesive is irradiated with ultraviolet rays to fix the rod lens 6 to the mounting frame 7.

In this way, the laser diode and the aspherical lens are made slidable by the slide frame, and the module frame in which the rod lens mounting frame is disposed is formed at the tip of the slide frame, and collimator adjustment and optical A line laser module is obtained in which the laser diode and aspherical lens are fixed with the axis adjusted, and the rod lens is vertically fixed to the rod lens mounting frame so that the laser module body and the center line of the emitted light coincide with each other. To be
The laser module has a curve-corrected line on the center point of the module as shown in FIG. 4 (C).

[0013]

EFFECTS OF THE INVENTION The present invention is as described above, in which the laser module main body is provided by the collimator adjustment and the optical axis adjustment utilizing the module frame preparation and the angle measurement, and the rod lens mounting jig whose verticality is ensured. On the other hand, it is an advantageous invention to provide a laser module having an unprecedented epoch-making function in which the center lines of radiated light coincide with each other and accurate marking can be performed without the need for readjustment and a manufacturing method thereof. .

[Brief description of drawings]

FIG. 1 is a sectional view showing a module frame.

FIG. 2 is a schematic diagram showing a relationship among an XY table, a module frame, and an angle measuring machine.

FIG. 3 is a front view showing a rod lens mounting jig.

FIG. 4 is a perspective view showing an irradiation state by a line laser module, where (A) shows a case where the laser line curve is not corrected, (B) shows a case where the tilt of the rod lens is adjusted,
(C) shows the case according to the present invention.

[Explanation of symbols]

1 module frame 2 laser diode 3 fixed base 4 slide frames 5 Aspherical lens 6 slide frames 7 mounting frame 8 rod lens 10 Rod lens mounting jig 11 bases 11a Horizontal plane 12,13 Support pillar 12a, 13a Hold spring 14 restraint frame

Claims (2)

[Claims] 1. A module frame in which a laser diode and an aspherical lens are slidable by a slide frame and a rod lens mounting frame is disposed at the tip of the slide frame is formed, and collimator adjustment and an optical axis are formed in the module frame. Fix the laser die dode and aspherical lens in the adjusted state,
In addition, the line laser module is characterized in that the rod lens is vertically fixed to the rod lens mounting frame so that the laser module main body and the center line of the emitted light coincide with each other. 2. A module frame in which a laser diode and an aspherical lens are slidable with a slide frame and a rod lens mounting frame is disposed at the tip of the slide frame is formed, and the laser diode side of the module frame is placed on an XY table. On the other hand, the angle measuring machine is placed on the opposite side while being mounted, and the slide frame is moved back and forth to adjust the collimation. At the same time, the angle data measured by the angle measuring machine is fed back to the XY table so that the laser beam Adjust the optical axis with respect to the aspherical lens, fix the module frame including the die doddle and the aspherical lens with an adhesive prepared in advance in the adjusted state, and place the module frame on a jig whose verticality is ensured. A method for manufacturing a line laser module, characterized in that the rod lens is vertically fixed to the rod lens mounting frame. Law.