阅读说明：本技术 一种可调扩束镜 (Adjustable beam expanding lens ) 是由 周志凯 李秋园 徐海锋 于 2020-08-17 设计创作，主要内容包括：本发明公开了一种可调扩束镜,包括镜筒、第一镜片和第二镜片,所述第一镜片固定安装在镜筒的前内部,在所述镜筒的后内部设置有调节筒,镜筒的后外部通过螺纹套装有调节环,所述第二镜片固定安装在调节筒内,连接件径向穿过镜筒将调节筒与调节环连接在一起,拧动调节环能通过连接件带动第二镜片前后移动。通过增设过调节环、调节筒和连接件,连接件穿过镜筒将调节环、调节筒连接在一起,通过拧动调节环来实现其中一个镜片的可调节安装,结构简单、安装调试方便,能通过调节满足多种使用场景的需求。(The invention discloses an adjustable beam expanding lens which comprises a lens barrel, a first lens and a second lens, wherein the first lens is fixedly arranged in the front inner part of the lens barrel, an adjusting cylinder is arranged in the rear inner part of the lens barrel, an adjusting ring is sleeved on the rear outer part of the lens barrel through threads, the second lens is fixedly arranged in the adjusting cylinder, a connecting piece radially penetrates through the lens barrel to connect the adjusting cylinder and the adjusting ring together, and the adjusting ring is screwed to drive the second lens to move back and forth through the connecting piece. Through addding adjustable ring, regulation section of thick bamboo and connecting piece, the connecting piece passes the lens cone and links together adjustable ring, regulation section of thick bamboo, realizes the adjustable installation of one of them lens through twisting the adjustable ring, and simple structure, installation and debugging are convenient, can satisfy the demand of multiple use scene through adjusting.)

1. The utility model provides an adjustable beam expanding lens, includes lens cone (1), first lens (2) and second lens (3), first lens (2) fixed mounting is inside its characterized in that before lens cone (1): the rear inner part of the lens cone (1) is provided with an adjusting cylinder (4), the rear outer part of the lens cone (1) is sleeved with an adjusting ring (12) through threads, the second lens (3) is fixedly installed in the adjusting cylinder (4), the connecting piece (5) radially penetrates through the lens cone (1) to connect the adjusting cylinder (4) and the adjusting ring (12) together, and the adjusting ring (12) is screwed to drive the second lens (3) to move back and forth through the connecting piece (5).

2. The adjustable beam expander of claim 1, wherein: the power density of the first lens (2) is larger than that of the second lens (3), and a water inlet pipe joint (6), a water outlet pipe joint (7), a sealing sleeve (8) and a retainer ring (9) are mounted on the front outer portion of the lens barrel (1), so that a cavity structure capable of being connected with a cooling medium is formed on the front outer portion of the lens barrel (1).

3. The adjustable beam expander of claim 2, wherein: the front outer part of the lens cone (1) is provided with an annular groove, the sealing sleeve (8) covers the annular groove and is sealed through sealing rings at two ends, the water inlet pipe joint (6) and the water outlet pipe joint (7) are oppositely arranged, the end of the water inlet pipe joint is right opposite to the annular groove, the rear end of the sealing sleeve (8) is abutted to a step arranged outside the lens cone (1), the front end of the sealing sleeve (8) is prevented from moving back through a check ring (9), and the check ring (9) is screwed outside the lens cone (1) through threads.

4. The adjustable beam expander lens of claim 1 or 2, wherein: open on the outer wall of adjustable ring (12) has circular via hole (3a), it has annular adjustment groove (3b) to open on the inner wall of adjustable ring (12), connecting piece (5) adopt have the end, the screw pin structure of screw rod down, it has transverse groove (1a) to open on lens cone (1), the upper end of connecting piece (5) passes circular via hole (3a) and falls into annular adjustment groove (3b) in, the lower screw rod of connecting piece (5) is twisted in adjusting a section of thick bamboo (4), when twisting adjustable ring (12) and rotating, connecting piece (5) drive second lens (3) back-and-forth movement, can not take place to rotate.

5. The adjustable beam expander of claim 1, wherein: the first lens (2) is arranged in the lens barrel (1) through a first pressing ring (10), and the second lens (3) is arranged in the adjusting barrel (4) through a second pressing ring (11).

6. The adjustable beam expander of claim 2, wherein: the front end of the lens cone (1) extends out of the retainer ring (9), and a front mounting interface (1b) is arranged at the front end of the lens cone (1); the rear end of the lens cone (1) extends out of the adjusting ring (12), and a rear mounting interface (1c) is arranged at the rear end of the lens cone (1).

Technical Field

The invention relates to the technical field of laser processing equipment parts, in particular to an adjustable beam expander.

Background

The laser processing technology is a one-step processing technology for cutting, welding, surface processing, punching, micro-processing and the like of materials (including metals and non-metals) by utilizing the interaction characteristic of a laser beam and a substance. Laser processing has been widely used in automobile, electronics, electrical appliances, aviation, metallurgy, machine manufacturing, etc. as an advanced manufacturing technique, and plays an important role in improving product quality, labor productivity, automation, no pollution, reducing material consumption, etc.

The existing beam expander has larger overall size, needs larger operation space adjustment in the use process, and is not beneficial to the design of a compact laser system in a limited space; in high power laser applications, higher power is necessary for heat dissipation requirements, tending to further increase the volume of the laser system; in order to achieve better effect in high-power laser application, fine adjustment of an actual optical path system is necessary, and some systems have severe requirements on adjustment accuracy. In practical laser application, the requirements of an optical-mechanical system on a compact structure and multiple necessary functions exist simultaneously, and the two requirements have certain contradiction.

Disclosure of Invention

The invention aims to solve the problems of high difficulty in installation and debugging, complex structure and single use scene of the existing beam expander.

Therefore, the technical scheme adopted by the invention is as follows: the utility model provides an adjustable beam expanding lens, includes lens cone, first lens and second lens, first lens fixed mounting is inside in the front of lens cone the inside regulation section of thick bamboo that is provided with in back of lens cone, the back outside of lens cone is equipped with the adjustable ring through the screw thread cover, second lens fixed mounting is in adjusting the section of thick bamboo, and the connecting piece radially passes the lens cone will adjust a section of thick bamboo and link together with the adjustable ring, twists the adjustable ring and can drive the second lens back-and-forth movement through the connecting piece.

Preferably, the power density of the first lens is greater than that of the second lens, and a water inlet pipe joint, a water outlet pipe joint, a sealing sleeve and a retaining ring are mounted on the front outer part of the lens barrel, so that a cavity structure capable of being accessed with a cooling medium is formed on the front outer part of the lens barrel. The water cooling structure is additionally arranged outside the lens barrel at the end with high power density, so that heat can be dissipated in time, and the heat dissipation effect of a product is improved, so that the lens barrel is suitable for a higher use power application scene.

Preferably, an annular groove is formed in the front outer portion of the lens cone, the sealing sleeve covers the annular groove and is sealed through sealing rings at two ends, the water inlet pipe joint and the water outlet pipe joint are oppositely arranged, the end of the water inlet pipe joint is opposite to the annular groove, the rear end of the sealing sleeve abuts against a step arranged outside the lens cone, the front end of the sealing sleeve is prevented from moving back through a retaining ring, and the retaining ring is screwed outside the lens cone through threads. The arrangement of the water cooling structure is further optimized, and the installation is compact and reliable.

Further preferably, the outer wall of the adjusting ring is provided with a circular through hole, the inner wall of the adjusting ring is provided with an annular adjusting groove, the connecting piece adopts a threaded pin structure with an upper end and a lower screw rod, the lens barrel is provided with a transverse groove, the upper end of the connecting piece penetrates through the circular through hole and falls into the annular adjusting groove, the lower screw rod of the connecting piece is screwed into the adjusting barrel, and when the adjusting ring is screwed to rotate, the connecting piece drives the second lens to move back and forth, so that the second lens cannot rotate. The adjustable mounting structure of the second lens is optimized, so that when the adjusting ring is screwed, the second lens only moves forwards and backwards and does not rotate, the inner adjusting cylinder can realize finer adjusting precision, and the concentricity is easier to guarantee; meanwhile, the water cooling structure and the adjustable structure are arranged in a staggered mode from front to back, and overall spatial arrangement is facilitated.

Preferably, the first lens is mounted in the lens barrel through a first pressing ring, and the second lens is mounted in the adjusting barrel through a second pressing ring.

Preferably, the front end of the lens cone extends out of the retainer ring, and a front mounting interface is arranged at the front end of the lens cone; the rear end of the lens cone extends out of the adjusting ring, and a rear mounting interface is arranged on the rear end head of the lens cone. The installation interfaces are arranged at the two ends of the lens cone, the two ends of the lens cone are respectively butted to directly realize the coaxiality of a light path, a complex installation and debugging link is omitted, the function of single-end connection is realized, and the installation mode is flexible.

The invention has the beneficial effects that: through addding adjustable ring, regulation section of thick bamboo and connecting piece, the connecting piece passes the lens cone and links together adjustable ring, regulation section of thick bamboo, realizes the adjustable installation of one of them lens through twisting the adjustable ring, and simple structure, installation and debugging are convenient, can satisfy the demand of multiple use scene through adjusting.

Drawings

Fig. 1 is a half sectional view of the present invention.

Fig. 2 is a top view of fig. 1.

FIG. 3 is a cross-sectional view 1/4 of the present invention.

Fig. 4 is a top view of fig. 3.

Detailed Description

The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:

referring to fig. 1-4, an adjustable beam expanding lens is mainly composed of a lens barrel 1, a first lens 2, a second lens 3, an adjusting cylinder 4, a connecting piece 5, a water inlet pipe joint 6, a water outlet pipe joint 7, a sealing sleeve 8, a retainer ring 9, a first pressing ring 10, a second pressing ring 11, and an adjusting ring 12.

The first lens 2 is fixedly arranged in the front of the lens barrel 1, the adjusting barrel 4 is arranged in the rear of the lens barrel 1, and the adjusting ring 12 is sleeved on the rear outer portion of the lens barrel 1 through threads. The second lens 3 is fixedly arranged in the adjusting cylinder 4, the connecting piece 5 radially penetrates through the lens barrel 1 to connect the adjusting cylinder 4 with the adjusting ring 12, and the adjusting ring 12 is screwed to drive the second lens 3 to move back and forth through the connecting piece 5, so that the adjustable installation of the second lens 3 is realized.

Preferably, the power density of the first lens 2 is greater than the power density of the second lens 3. In order to ensure the effective heat dissipation of the front end of the lens cone 1, a water cooling structure is additionally arranged at the front end of the lens cone 1. A water inlet pipe joint 6, a water outlet pipe joint 7, a sealing sleeve 8 and a retainer ring 9 are arranged at the front outer part of the lens barrel 1, so that a cavity structure which can be accessed with a cooling medium is formed at the front outer part of the lens barrel 1.

The concrete structure is as follows: an annular groove is formed in the front outer portion of the lens barrel 1, and the sealing sleeve 8 covers the annular groove and is sealed through sealing rings at two ends. The water inlet pipe joint 6 and the water outlet pipe joint 7 are arranged oppositely, the end heads of the water inlet pipe joint and the water outlet pipe joint are opposite to the annular groove, the water inlet pipe joint 6 is used for inputting cold water into the annular groove, and the water outlet pipe joint 7 is used for discharging the water after temperature rise. The rear end of the sealing sleeve 8 is abutted against a step arranged outside the lens barrel 1, the front end of the sealing sleeve 8 is prevented from moving back through a retaining ring 9, and the retaining ring 9 is screwed outside the lens barrel 1 through threads. The form of adding the water cooling structure outside the lens barrel is not limited to this.

Preferably, the outer wall of the adjusting ring 12 is provided with a circular through hole 3a, and the inner wall of the adjusting ring 12 is provided with an annular adjusting groove 3 b. The connecting piece 5 adopts a threaded pin structure with an upper end and a lower screw rod. The lens barrel 1 is provided with a transverse groove 1 a. The upper end of the connecting piece 5 passes through the circular through hole 3a and falls into the annular adjusting groove 3b, the lower screw of the connecting piece 5 is screwed into the adjusting cylinder 4, and when the adjusting ring 12 is screwed to rotate, the connecting piece 5 drives the second lens 3 to move back and forth, so that the second lens cannot rotate. The structure form of driving the second lens to move back and forth by screwing the adjusting ring is not limited to the structure form, and compared with the mode that the second lens moves back and forth along with the synchronous rotation of the adjusting ring, the structure has the advantages that the adjustable precision is higher, and the coaxiality is easier to ensure.

Preferably, the first lens 2 is mounted in the lens barrel 1 by a first pressing ring 10, and the second lens 3 is mounted in the adjusting barrel 4 by a second pressing ring 11.

The front end of the lens cone 1 extends out of the retainer ring 9, and the front end of the lens cone 1 is provided with a front mounting interface 1 b; the rear end of the lens cone 1 extends out of the adjusting ring 12, and a rear mounting interface 1c is arranged at the rear end of the lens cone 1.

The adjustable beam expanding lens is flexible and convenient to mount, and the coaxiality of an optical path is easier to ensure; the water cooling structure, the adjusting structure and the optical structure are mutually embedded, so that a higher rated service power is easily obtained while the beam contraction effect is ensured, and meanwhile, the fine adjusting precision is realized.