TWI890156B - Structure and method for automatic positioning laser multi-lens combination - Google Patents

Abstract

The invention relates to a structure and a method for automatic positioning a laser multi-lens combination. The structure primarily comprises a focusing lens having a conical ring at a first end thereof and a lined lens having a conical groove at a second end thereof. When the conical ring of the focusing lens correspondingly combines with the conical groove of the lined lens to form a conicity therebetween, the center of the arc convex-shaped light-emitting part surrounded by the conical ring of the focusing lens can be aligned with the sawtooth-shaped light-receiving part on the top of the conical groove of the lined lens automatically. Consequently, the inconvenience of using external structures such as screws for calibration and the deviations caused by the improper adjustment can be avoided, thereby significantly enhancing the convenience and accuracy of laser alignment devices.

Description

Laser multi-lens assembly automatic positioning structure and implementation method thereof

This invention relates to the field of laser marking device technology, and more particularly to a laser multi-lens assembly automatic positioning structure and its implementation method.

Please refer to Taiwan Publication No. TW200503369A, "Laser Line Module Device," a common laser marking device currently available on the market. It primarily comprises a body having a first end and a second end, within which a laser light module is mounted, and a triangular prism mounted on the first end of the body. Several screw holes are provided around the periphery of the first end of the body, which are screwed in with corresponding screws. By adjusting the screws, the position of the laser light module relative to the center of the body can be fine-tuned to prevent deviation of the laser light from the laser module. When the laser light module illuminates the triangular prism, the emitted laser light forms a straight beam, which can be used for machine positioning, processing, or laser 3D scanning.

While the "Laser Line Module Device" (Taiwan Publication No. TW200503369A) can provide mechanical positioning and processing, the accuracy of its laser light emission requires screw adjustment to align the laser light emitting unit with the center of the main body. This method of adjusting and calibrating using external structures such as screws is not only time-consuming but also prone to errors due to improper adjustment. As a result, the accuracy adjustment of existing laser marking devices such as the "Laser Line Module Device" (Taiwan Publication No. TW200503369A) still needs to be improved.

The inventors, in light of the aforementioned deficiencies in the practical application of existing laser marking devices, have developed this invention, drawing upon their many years of manufacturing and design experience and knowledge in related fields and after much ingenuity.

This invention relates to a structure for automatically aligning the centers of multiple lenses in a laser multi-lens assembly and its implementation method. Its primary purpose is to provide a method for automatically aligning the centers of multiple lenses, thereby improving the ease of use and accuracy of laser marking devices. A secondary purpose is to provide a structure for stably assembling multiple lenses and its implementation method.

In order to achieve the above-mentioned implementation objectives, the inventors have developed the following laser multi-lens assembly automatic positioning structure, which includes: a focusing lens, wherein the focusing lens is formed with a first end and a second end opposite to each other, and a cavity is provided in the focusing lens, and the cavity opening is formed at the second end of the focusing lens, and an arc-shaped convex light-emitting portion is provided at the first end of the focusing lens, and a convex light-emitting portion is provided at the first end of the focusing lens. A tapered ring is formed around the arc-shaped convex light-emitting portion; a bonding lens is formed with a first end and a second end, and a tapered groove is formed at the second end of the bonding lens. The tapered ring of the focusing lens is correspondingly engaged with the tapered groove of the bonding lens. A saw-shaped light-entry portion is formed at the top of the tapered groove, and a light-emitting surface is formed at the first end of the bonding lens.

In the aforementioned automatic positioning structure for a laser multi-lens assembly, the depth of the conical groove of the bonding lens is less than the height of the conical ring of the focusing lens, thereby forming a gap between the first end of the focusing lens and the second end of the bonding lens.

In the aforementioned automatic positioning structure for a laser multi-lens assembly, a groove is formed around the second end of the bonding lens to form a glue storage space together with the gap formed between the first end of the focusing lens and the second end of the bonding lens.

In the aforementioned automatic positioning structure for a laser multi-lens assembly, the light-emitting surface of the bonding lens is a flat surface.

The aforementioned automatic positioning structure for a multi-lens laser assembly further includes a laser light source disposed within the cavity of the focusing lens.

In the aforementioned implementation method of the automatic positioning structure for a laser multi-lens assembly, a conical ring provided on the first end of the focusing lens is aligned with a conical groove provided on the second end of the bonding lens. The conical ring and the conical groove are tapered to each other, so that the center of the arc-shaped convex light-emitting portion provided on the conical ring of the focusing lens and the saw-shaped light-entering portion provided on the top of the conical groove of the bonding lens are automatically aligned.

In the aforementioned implementation method of the automatic positioning structure for a laser multi-lens assembly, the depth of the tapered groove of the bonding lens is less than the height of the tapered ring of the focusing lens. After the focusing lens and the bonding lens are assembled and positioned, a gap is formed between the first end of the focusing lens and the second end of the bonding lens. Glue is then injected into the gap to bond the focusing lens and the bonding lens together.

In the aforementioned implementation method of the automatic positioning structure for a laser multi-lens assembly, a groove is formed around the second end of the bonding lens, and glue is injected from the groove around the second end of the bonding lens into the gap formed between the first end of the focusing lens and the second end of the bonding lens.

In the aforementioned implementation method of the automatic positioning structure for a laser multi-lens assembly, the light-emitting surface of the bonding lens is a flat surface.

In the aforementioned implementation method of the automatic positioning structure for a laser multi-lens assembly, the structure further includes a laser light source disposed within the cavity of the focusing lens. The laser light source is then activated to emit a laser beam. After being focused by the arc-shaped convex light-emitting portion of the focusing lens, the laser beam is projected onto the saw-shaped light-incoming portion of the bonding lens. The beam is then projected from the light-emitting surface at the first end of the bonding lens and converted into a linear beam.

Thus, the invention utilizes the tapered design of the tapered ring of the focusing lens and the tapered groove of the bonding lens to match each other. When the tapered ring of the focusing lens and the tapered groove of the bonding lens are combined, the arc-shaped convex light-emitting portion of the tapered ring of the focusing lens and the saw-tooth light-entering portion of the groove top of the tapered groove of the bonding lens are automatically aligned, thereby avoiding the trouble and adjustment of using external structures such as screws for correction. This significantly improves the usability and accuracy of laser marking devices by eliminating errors. Furthermore, by designing the depth of the tapered groove of the bonding lens to be less than the height of the tapered ring of the focusing lens, a gap is created between the end faces of the focusing lens and the bonding lens when the tapered ring and the tapered groove are combined. This increases the bonding area between the focusing lens and the bonding lens, achieving a stable bond between the two lenses.

1: Focusing lens

11: Cavity

12: Light output department

13: Conical Ring

2: Wire bonding lens

21: Tapered groove

22: Gap

23: Groove

24: Glue storage space

25: Light entrance part

26: Bright side

3: Laser light source

4: Glue

Figure 1: A three-dimensional exploded anatomical view of the present invention

Figure 2: Analytical view of the present invention

Figure 3: Cross-sectional view of the assembly of the present invention

Figure 4: Partially enlarged cross-sectional view of the assembly of the present invention

To provide a more complete and clear disclosure of the technical means of the present invention and the effects it can achieve, a detailed description is provided below. Please also refer to the disclosed drawings and figure numbers:

First, please refer to the first and second figures, which are the laser multi-lens assembly automatic positioning structure of the present invention, which mainly includes: a focusing lens (1), which forms a first end and a second end relative to each other, and a cavity (11) is provided in the focusing lens (1), so that the cavity (11) is formed at the second end of the focusing lens (1), and an arc-shaped convex light outlet is provided at the first end of the focusing lens (1). The focusing lens (1) has a first end formed with a tapered ring (13) surrounding the arc-shaped convex light-emitting portion (12); a bonding lens (2) is formed with a first end and a second end of the bonding lens (2), and a tapered groove (21) is formed at the second end of the bonding lens (2), and the tapered ring (13) of the focusing lens (1) corresponds to the tapered groove (21) of the bonding lens (2). The depth of the tapered groove (21) is smaller than the height of the tapered ring (13), so that the tapered ring (13) and the tapered groove (21) are joined. Please refer to the fourth figure, a gap (22) is formed between the first end of the focusing lens (1) and the second end of the wire bonding lens (2), and a groove (23) is provided around the second end of the wire bonding lens (2) to engage with the first end of the focusing lens (1) and the wire bonding lens (2). The gap (22) between the second ends of the line mirror (2) together forms a glue storage space (24), and a sawtooth-shaped light entrance portion (25) is formed on the top of the conical groove (21), and a flat light exit surface (26) is formed on the first end of the line mirror (2); a laser light source (3) is arranged in the cavity (11) of the focusing lens (1), and the laser light source (3) can be a laser diode.

Therefore, when assembling and using, please refer to the third and fourth figures, which show that the conical ring (13) provided at the first end of the focusing lens (1) is correspondingly joined with the conical groove (21) provided at the second end of the bonding lens (2). At this time, by utilizing the mutually matching conical design of the conical ring (13) and the conical groove (21), the arc-shaped convex light-emitting portion (12) surrounded by the conical ring (13) of the focusing lens (1) and the saw-toothed light-entering portion (25) provided at the top of the conical groove (21) of the bonding lens (2) can be automatically aligned.

After the focusing lens (1) and the bonding lens (2) are assembled and positioned, a gap (22) is formed between the end faces of the first end of the focusing lens (1) and the second end of the bonding lens (2) because the depth of the tapered groove (21) is less than the height of the tapered ring (13). Then, glue (4) is injected into the first end of the focusing lens (1) and the bonding lens (2) through the groove (23) provided on the periphery of the second end of the bonding lens (2). (2) and the second end to form a gap (22) to fill the adhesive storage space (24) formed by the peripheral groove (23) of the bonding lens (2) extending to the focusing lens (1) and the end gap (22) of the bonding lens (2). Thereby, the bonding area of the focusing lens (1) and the bonding lens (2) is increased, achieving the effect of firmly bonding the focusing lens (1) and the bonding lens (2).

Then, the laser light source (3) is installed in the cavity (11) of the focusing lens (1), and then the laser light source (3) is activated to emit a laser beam. The laser beam is then focused on the arc-shaped convex light-emitting portion (12) of the focusing lens (1), and then projected onto the saw-shaped light-incoming portion (25) of the bonding lens (2). It is then projected out from the flat light-emitting surface (26) provided at the first end of the bonding lens (2) and transformed into a linear light line, which is used as a reference line for mechanical positioning and processing operations.

Here, by utilizing the tapered design of the tapered ring (13) of the focusing lens (1) and the tapered groove (21) of the wire bonding lens (2) that fits with each other, when the tapered ring (13) of the focusing lens (1) is assembled and pushed into the tapered groove (21) of the wire bonding lens (2), the centers of the arc-shaped convex light-emitting portion (12) of the focusing lens (1) and the saw-shaped light-entering portion (25) of the wire bonding lens (2) are automatically aligned. This effectively solves the problem of the existing laser marking device requiring time-consuming adjustment and calibration through external structures such as screws, and at the same time avoids problems such as errors caused by improper adjustment, thereby greatly improving the convenience and accuracy of the laser marking device.

The aforementioned embodiments or drawings do not limit the implementation of the present invention. Any appropriate changes or modifications made by those with ordinary skill in the art should be considered to be within the patent scope of the present invention.

From the above structure and implementation, it can be seen that the present invention has the following advantages:

1. The present invention's automatic positioning structure for a multi-lens laser assembly and its implementation method utilize a tapered ring on the focusing lens and a tapered groove on the bonding lens. By utilizing the tapered design of the tapered ring and the groove, the center of the lens is automatically aligned when the tapered ring and the groove are aligned.

2. The present invention's automatic positioning structure for a multi-lens laser assembly and its implementation method utilizes a tapered groove in the bonding lens that is less deep than the tapered ring in the focusing lens. This allows the tapered ring and groove to be assembled together, creating a gap between the end faces of the focusing and bonding lenses. This increases the bonding area between the focusing and bonding lenses, achieving a secure bond between the two lenses.

In summary, the embodiments of this invention can indeed achieve the intended effects. Furthermore, the specific structure disclosed herein is not only unprecedented in similar products, but has also not been disclosed prior to filing this application. Therefore, this invention fully complies with the provisions and requirements of the Patent Law. Therefore, we hereby file an application for an invention patent in accordance with the law and earnestly request your review and approval of the patent. I would be truly grateful for this.

1: Focusing lens

11: Cavity

12: Light output department

13: Conical Ring

2: Wire bonding lens

21: Tapered groove

23: Groove

25: Light entrance part

26: Bright side

3: Laser light source

Claims (10)

A laser multi-lens assembly automatic positioning structure comprises: A focusing lens, wherein the focusing lens is formed with a first end and a second end opposite to each other, a cavity is defined within the focusing lens, and an opening of the cavity is formed at the second end of the focusing lens; an arc-shaped convex light-emitting portion is provided at the first end of the focusing lens, and a tapered ring is formed on the first end of the focusing lens and surrounds the arc-shaped convex light-emitting portion; A bonding lens is formed with a first end and a second end, and a tapered groove is formed on the second end of the bonding lens. The tapered ring of the focusing lens is aligned with the tapered groove of the bonding lens. A saw-shaped light entrance portion is formed at the top of the tapered groove, and a light exit surface is formed on the first end of the bonding lens. As described in claim 1, the laser multi-lens assembly automatic positioning structure, wherein the depth of the tapered groove of the bonding lens is less than the height of the tapered ring of the focusing lens, so as to form a gap between the first end of the focusing lens and the second end of the bonding lens. As described in claim 2, the laser multi-lens assembly automatic positioning structure, wherein a groove is provided around the second end of the bonding lens to form a glue storage space together with the gap formed between the first end of the focusing lens and the second end of the bonding lens. The laser multi-lens assembly automatic positioning structure as described in claim 1, wherein the light-emitting surface of the bonding lens is a flat surface. As described in claim 1, the automatic positioning structure of the laser multi-lens assembly further includes a laser light source, and the laser light source is arranged in the cavity of the focusing lens. A method for implementing an automatic positioning structure for a laser multi-lens assembly utilizes the automatic positioning structure of claim 1, wherein a tapered ring provided on a first end of a focusing lens is aligned with a tapered groove provided on a second end of a bonding lens. The tapered ring and the tapered groove are adapted to engage each other, thereby automatically aligning the centers of an arc-shaped light-emitting portion encircling the tapered ring of the focusing lens with a saw-toothed light-entering portion provided at the top of the tapered groove of the bonding lens. In the embodiment of the automatic positioning structure for a laser multi-lens assembly as described in claim 6, the depth of the tapered groove of the bonding lens is less than the height of the tapered ring of the focusing lens, so that after the focusing lens and the bonding lens are assembled and positioned, a gap is formed between the first end of the focusing lens and the second end of the bonding lens, and glue is then injected into the gap to bond the focusing lens and the bonding lens together. As described in claim 7, an implementation method of the automatic positioning structure of a laser multi-lens assembly, wherein a groove is provided around the second end of the bonding lens, and glue is injected from the groove provided around the second end of the bonding lens into the gap formed between the first end of the focusing lens and the second end of the bonding lens. As described in claim 6, the implementation method of the automatic positioning structure of the laser multi-lens assembly, wherein the light-emitting surface of the wire-bonding lens is a flat surface. As described in claim 9, the method for implementing the automatic positioning structure of a laser multi-lens assembly further includes a laser light source, which is disposed in the cavity of the focusing lens and then activated to emit a laser beam. The laser beam is focused by the arc-shaped convex light-emitting portion of the focusing lens, then projected onto the saw-shaped light-incoming portion of the bonding lens, and then projected out from the light-emitting surface of the first end of the bonding lens to be converted into a linear light beam.