CN213182213U - Reflective integrator for forming uniform two-dimensional light spots - Google Patents
Reflective integrator for forming uniform two-dimensional light spots Download PDFInfo
- Publication number
- CN213182213U CN213182213U CN202022617396.8U CN202022617396U CN213182213U CN 213182213 U CN213182213 U CN 213182213U CN 202022617396 U CN202022617396 U CN 202022617396U CN 213182213 U CN213182213 U CN 213182213U
- Authority
- CN
- China
- Prior art keywords
- reflecting surface
- sub
- reflecting
- mirror
- horizontal direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention belongs to the technical field of lenses for laser processing, and particularly relates to a reflection type integrating mirror for forming uniform two-dimensional light spots. According to the integrating mirror disclosed by the invention, the light spots can be shaped into flat-top distribution through one integrating mirror, the size of an optical system can be effectively reduced, the integrating mirror is more suitable for a narrow space in a laser head, the design of the laser head is facilitated, and the size of the laser head is reduced.
Description
Technical Field
The invention belongs to the technical field of lenses for laser processing, and particularly relates to a reflective integrator mirror for forming uniform two-dimensional light spots.
Background
The laser heating technology is an important means for processing the non-metallic material by laser, but the melting point of the non-metallic material is low, usually only hundreds of degrees centigrade, and the heat conductivity coefficient is generally low, so that the heat can not be rapidly dissipated, the material can be carbonized only when the laser power is slightly high, and the phenomenon of local carbonization can also occur when the laser power is uneven; the light distribution of the fiber laser is Gaussian distribution, which is not suitable for the application scene of quenching and cladding, and the light spots need to be shaped into flat-top distribution; meanwhile, in the fields of biological fluorescence, medicine and the like, lasers with different wavelengths are required to be uniformly irradiated on a specified area in a specific shape, and the consistency of the spectrum is ensured. Therefore, it is necessary to develop a lens capable of forming a uniform rectangular light spot, so as to realize the sharing of different wavelengths. And because the space is less in the laser head, if can realize not only being favorable to the design of laser head more through the plastic of an integration mirror realization to the facula, still help reducing the size of laser head.
Disclosure of Invention
In order to solve the problems, the invention discloses a reflective integrating mirror for forming uniform two-dimensional light spots, the light spots can be shaped into flat-top distribution by one integrating mirror, the size of light learning can be effectively reduced, the reflective integrating mirror is more suitable for narrow space in a laser head, the design of the laser head is facilitated, and the size of the laser head is reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a reflection-type integrator mirror for forming even two-dimentional facula, includes columniform integrator mirror body, the integrator mirror body includes plane of reflection and the bottom surface relative with the plane of reflection, certain contained angle has between plane of reflection and the bottom surface, the plane of reflection includes the sub-plane of reflection of a plurality of, sub-plane of reflection is the curved surface, the light that sub-plane of reflection reflects all assembles on the working face.
Preferably, the sub-reflecting surfaces are all aspheric curved surfaces which are concave inwards, and the surface types in the horizontal direction and the vertical direction are all paraboloids.
Preferably, the number of the sub-reflecting surfaces is 25, and the sub-reflecting surfaces are formed by uniformly dividing four horizontal edges in the horizontal direction and four vertical edges perpendicular to the horizontal edges.
Preferably, a part between two middle longitudinal edges is a longitudinal central reflecting surface, a part between two left longitudinal edges is a left first reflecting surface, a part, which is far to the left, of the leftmost longitudinal edge is a left second reflecting surface, a part, which is far to the right, of the two right longitudinal edges is a right first reflecting surface, and a part, which is far to the right, of the rightmost longitudinal edge is a right second reflecting surface;
each sub-reflecting surface on the longitudinal central reflecting surface has the same curvature in the horizontal direction, each sub-reflecting surface on the left two reflecting surfaces has the same curvature in the horizontal direction, each sub-reflecting surface on the right reflecting surface has the same curvature in the horizontal direction, and each sub-reflecting surface on the right two reflecting surfaces has the same curvature in the horizontal direction;
the curvatures of the left reflecting surface and the right reflecting surface in the horizontal direction are the same and are both larger than the curvature of the longitudinal central reflecting surface in the horizontal direction; the curvatures of the left second reflecting surface and the right second reflecting surface in the horizontal direction are the same and are both larger than the curvature of the left first reflecting surface in the horizontal direction.
Preferably, a portion between two middle transverse edges is a transverse central reflecting surface, a portion between two upper transverse edges is a previous reflecting surface, a portion above the uppermost transverse edge is a next reflecting surface, a portion below the lowermost transverse edge is a next reflecting surface, and a portion below the lowermost transverse edge is a next reflecting surface;
each of the sub-reflecting surfaces on the transverse central reflecting surface has the same curvature in the longitudinal direction, each of the sub-reflecting surfaces on the upper two reflecting surfaces has the same curvature in the longitudinal direction, each of the sub-reflecting surfaces on the lower reflecting surface has the same curvature in the longitudinal direction, and each of the sub-reflecting surfaces on the lower two reflecting surfaces has the same curvature in the longitudinal direction;
and the curvatures of the upper two reflecting surfaces, the upper reflecting surface, the transverse central reflecting surface, the lower reflecting surface and the lower two reflecting surfaces in the longitudinal direction are reduced in sequence.
Preferably, the bottom surface of the integrating mirror body is provided with a fixing hole, a water inlet and a water outlet, and the fixing hole is used for fixing the integrating mirror on equipment; the water inlet is used for introducing cooling water into the integrating mirror to cool the integrating mirror, and the cooling water flows out through the water outlet.
Preferably, the bottom surface of the integrating mirror body is further provided with at least one positioning hole to prevent the integrating mirror from rotating.
Preferably, the included angle between the reflecting surface and the bottom surface is 45 degrees; the working distance of the integrating mirror is 300 mm.
Preferably, the front projection of the reflecting surface is circular and has a diameter of 49.5 mm.
Preferably, the integrating mirror body is made of oxygen-free copper TU 1.
The invention has the following beneficial effects:
(1) according to the integrating mirror disclosed by the invention, the light spots can be shaped into flat-top distribution through one integrating mirror, the size of an optical system can be effectively reduced, the integrating mirror is more suitable for a narrow space in a laser head, the design of the laser head is facilitated, and the size of the laser head is reduced;
(2) by adopting the integrating mirror, light spots obtained on the working plane are both flattop distributed in the length direction and the width direction;
(3) by modifying the parameters of the reflecting surfaces, the curvature of each sub reflecting surface in the transverse direction and the longitudinal direction can realize light spots of 5mm multiplied by 5mm to 20mm multiplied by 20mm, and special-shaped light spots can be realized and can be set according to specific requirements to meet different light spot requirements;
(4) the integrator lens of the invention can be used for shaping laser, changing the material of the integrator lens and shaping ultraviolet light and far infrared light.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a reflective surface of the present invention;
FIG. 3 is a schematic view of the structure on the bottom side of the present invention;
FIG. 4 is a schematic diagram of the optical path of the present invention;
FIG. 5 is a schematic view of a light spot obtained by one embodiment of the present invention;
in the figure: 1. an integrator mirror body; 11. a reflective surface; 111. a sub-reflecting surface; 112. a transverse edge; 113. longitudinal edges; 12. a bottom surface; 121. a fixing hole; 122. a water inlet; 123. a water outlet; 124. positioning holes; 21. a transverse central reflective surface; 22. a last reflecting surface; 23. an upper two reflecting surfaces; 24. a next reflective surface; 25. a lower two reflecting surfaces; 31. a longitudinal central reflective surface; 32. a left reflecting surface; 33. a left second reflecting surface; 34. a right reflecting surface; 35. a right two reflecting surfaces; 7. a laser beam; 8. reflecting the light; 9. a light spot.
Detailed Description
The present invention will now be described in further detail with reference to examples.
A reflective integrating mirror for forming uniform two-dimensional light spots is disclosed, as shown in fig. 1, fig. 3 and fig. 4, the reflective integrating mirror comprises a cylindrical integrating mirror body 1, the integrating mirror body 1 comprises a reflecting surface 11 and a bottom surface 12 opposite to the reflecting surface 11, a certain included angle is formed between the reflecting surface 11 and the bottom surface 12, the reflecting surface 11 comprises a plurality of sub reflecting surfaces 111, the sub reflecting surfaces 111 are curved surfaces, and light rays reflected by the sub reflecting surfaces 111 are converged on a working surface. The light rays reflected by each sub-reflecting surface 11 are converged and superposed on the working surface to form light spots with set shapes and set sizes.
In one specific embodiment, the sub-reflecting surfaces 111 are each an inwardly concave aspheric curved surface, and each of the horizontal and vertical surface shapes is a paraboloid. Since the curvature of the curved surface is very small, the curvature is not clearly shown in the drawings.
In one specific embodiment, as shown in fig. 1, 25 sub-reflecting surfaces 111 are provided, and are uniformly divided by four horizontal transverse edges 112 and four longitudinal edges 113 perpendicular to the transverse edges 112.
In a specific embodiment, as shown in fig. 1-2, a portion between two middle longitudinal edges 113 is a longitudinal central reflecting surface 31, a portion between two left longitudinal edges 113 is a left reflecting surface 32, a portion of a leftmost longitudinal edge 113 toward the left is a left second reflecting surface 33, a portion between two right longitudinal edges 113 is a right first reflecting surface 34, and a portion of a rightmost longitudinal edge 113 toward the right is a right second reflecting surface 35; each sub-reflecting surface 111 on the longitudinal central reflecting surface 31 has the same curvature in the horizontal direction, each sub-reflecting surface 111 on the left first reflecting surface 32 has the same curvature in the horizontal direction, each sub-reflecting surface 111 on the left second reflecting surface 33 has the same curvature in the horizontal direction, each sub-reflecting surface 111 on the right first reflecting surface 34 has the same curvature in the horizontal direction, and each sub-reflecting surface 111 on the right second reflecting surface 35 has the same curvature in the horizontal direction; the curvatures of the left reflecting surface 32 and the right reflecting surface 34 in the horizontal direction are the same and are both larger than the curvature of the longitudinal central reflecting surface 31 in the horizontal direction; the curvatures of the left second reflecting surface 33 and the right second reflecting surface 35 in the horizontal direction are the same and are both larger than the curvature of the left first reflecting surface 32 in the horizontal direction.
In a specific embodiment, as shown in fig. 1-2, the portion between the two middle transverse ribs 112 is the transverse central reflecting surface 21, the portion between the two upper transverse ribs 112 is the upper reflecting surface 22, the portion above the uppermost transverse rib 112 is the upper two reflecting surfaces 23, the portion between the two lower transverse ribs 112 is the lower reflecting surface 24, and the portion below the lowermost transverse rib 112 is the lower two reflecting surfaces 25; each of the sub-reflecting surfaces 111 on the transverse central reflecting surface 21 has the same curvature in the longitudinal direction, each of the sub-reflecting surfaces 111 on the upper reflecting surface 22 has the same curvature in the longitudinal direction, each of the sub-reflecting surfaces 111 on the upper two reflecting surfaces 23 has the same curvature in the longitudinal direction, each of the sub-reflecting surfaces 111 on the lower reflecting surface 24 has the same curvature in the longitudinal direction, and each of the sub-reflecting surfaces 111 on the lower two reflecting surfaces 25 has the same curvature in the longitudinal direction; the curvatures of the upper two reflecting surfaces 23, the upper one reflecting surface 22, the transverse central reflecting surface 21, the lower one reflecting surface 24 and the lower two reflecting surface 25 in the longitudinal direction are sequentially reduced.
The above design is beneficial to enable the light rays reflected by each sub-reflecting surface 111 to converge and completely coincide on the working surface, so as to obtain the light spot with the set size.
In a specific embodiment, as shown in fig. 3, a fixing hole 121, a water inlet 122 and a water outlet 123 are provided on the bottom surface 12 of the integrating mirror body 1, the fixing hole 121 is used for fixing the integrating mirror on a device; the water inlet 122 is used for introducing cooling water into the integrating mirror to cool the integrating mirror, and the cooling water flows out through the water outlet 123. In actual operation, cooling water flows into a channel in the integrating mirror through the water inlet 122 and flows out through the water outlet 123, so that the integrating mirror is favorably cooled, and the integrating mirror is prevented from being in a high-temperature state for a long time.
In a specific embodiment, as shown in fig. 3, a machining hole is formed in the side wall of the integrating mirror, and the machining hole is formed when a cooling water channel is machined in the integrating mirror and can be blocked by a rubber plug during use.
In a specific embodiment, as shown in fig. 3, at least one positioning hole 124 is further provided on the bottom surface 12 of the integrating mirror body 1 to prevent the integrating mirror from rotating.
In one particular embodiment, the angle between the reflective surface 11 and the bottom surface 12 is 45 °; the working distance of the integrating mirror is 300 mm.
In a specific embodiment, the front projection of the reflecting surface 11 is circular and has a diameter of 49.5 mm. Can be applied to most of the existing laser heads.
In a specific embodiment, the integrating mirror body 1 is made of oxygen-free copper TU 1. In an embodiment, if shaping is performed for ultraviolet light and far infrared light, other suitable materials may be selected.
In the use process, as shown in fig. 4, when a light spot of 5 × 15mm needs to be obtained, the integrating mirror is firstly fixed on the processing system through the fixing hole 121 and the positioning hole 124, cooling water is introduced into the water inlet 122 to cool the integrating mirror, and the cooling water flows out through the water outlet 123. The collimated laser beam 7 is a circular light spot with the diameter of about 40mm, the circular light spot is incident on the reflecting surface 11 of the integrating mirror, the laser beam is divided into 25 light beams, the reflected light 8 reflected by the reflecting surface 11 forms a light spot 9 on the working surface, the non-metal material is heated, the temperature distribution of the working point is fed back in real time through a far infrared detector, the laser power is adjusted, and the temperature of the heating pad is controlled to be between 400 ℃ and 450 ℃.
According to the size of the required light spot area, the curvature of each sub-reflecting surface 111 of the two-dimensional integrating mirror can be adjusted, so that the required light spot can be obtained in shape, for example, the light spots distributed on a rectangular flat top with the size of 5 × 5mm to 20 × 20mm, or the flat-top light spots with the shapes of octagon or hexagon, etc., at this time, the reflecting surface 11 of the integrating mirror body 1 needs to be divided into the sub-reflecting surfaces 111 with the shapes of octagon or hexagon, etc., corresponding to the light spot, in this case, the curvature of each sub-reflecting surface 111 in the horizontal direction or the longitudinal direction perpendicular to the horizontal direction also needs to be designed according to the actual situation, and all the sub-reflecting surfaces 111 can be converged on the working plane.
In a specific embodiment, as shown in FIG. 2, the curvature in the X-direction is X, the curvature in the Y-direction is Y, and the curvature of the longitudinal central reflecting surface 31 in the X-direction is X2= -565.92×Y2The curvature of the left reflecting surface 32 in the X direction is (X +3.33)2= -566.04 × (Y +0.04), of the left two reflection surfaces 33The curvature is (X +6.65) in the X direction2= -566.68 × (Y +0.16), the curvature of the right reflecting surface 34 in the X direction is (X-3.33)2= -566.04 × (Y +0.04), the curvature of the right two reflecting surfaces 35 is (X-6.65) in the X direction2= 566.68 × (Y + 0.16). The curvature of the transverse central reflecting surface 21 is Y in the Y direction2= -240.2 × X, the curvature of the last reflecting surface 22 in the Y direction is (Y-5.92)2= 240.2 × (X +6.16), the curvature of the upper two reflecting surfaces 23 is (Y-11.77) in the Y direction2= -240.52 × (X +12.48), the curvature of the next reflecting surface 24 in the Y direction is (Y-5.92)2= 240.2 × (X-6.16), the curvature of the lower reflecting surface 25 in the Y direction is (Y +12.09)2= 240.24 × (X-11.85). As shown in fig. 5, the spot obtained by the above-mentioned integrating mirror is 5 × 15mm, and the focal spot is flat-topped in both x and y directions.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A reflective integrator mirror for forming a uniform two-dimensional light spot, comprising a cylindrical integrator mirror body (1), said integrator mirror body (1) comprising a reflective surface (11) and a bottom surface (12) opposite to the reflective surface (11), said reflective surface (11) and bottom surface (12) having a certain included angle therebetween, characterized in that: the reflecting surface (11) comprises a plurality of sub reflecting surfaces (111), the sub reflecting surfaces (111) are all curved surfaces, and light rays reflected by the sub reflecting surfaces (111) are converged on the working surface.
2. The reflective integrator mirror of claim 1, wherein: the sub-reflecting surfaces (111) are all concave aspheric curved surfaces, and the surface types in the horizontal direction and the vertical direction are paraboloids.
3. The reflective integrator mirror of claim 1, wherein: the number of the sub-reflecting surfaces (111) is 25, and the sub-reflecting surfaces are formed by uniformly dividing four horizontal edges (112) in the horizontal direction and four longitudinal edges (113) perpendicular to the horizontal edges (112).
4. A reflective integrator mirror for forming a uniform two-dimensional spot, as claimed in claim 3, wherein: the part between two middle longitudinal edges (113) is a longitudinal central reflecting surface (31), the part between two left longitudinal edges (113) is a left first reflecting surface (32), the part, towards the left, of the leftmost longitudinal edge (113) is a left second reflecting surface (33), the part between two right longitudinal edges (113) is a right first reflecting surface (34), and the part, towards the right, of the rightmost longitudinal edge (113) is a right second reflecting surface (35);
each sub-reflecting surface (111) on the longitudinal central reflecting surface (31) has the same curvature in the horizontal direction, each sub-reflecting surface (111) on the left reflecting surface (32) has the same curvature in the horizontal direction, each sub-reflecting surface (111) on the left reflecting surface (33) has the same curvature in the horizontal direction, each sub-reflecting surface (111) on the right reflecting surface (34) has the same curvature in the horizontal direction, and each sub-reflecting surface (111) on the right reflecting surface (35) has the same curvature in the horizontal direction;
the curvatures of the left reflecting surface (32) and the right reflecting surface (34) in the horizontal direction are the same and are both larger than the curvature of the longitudinal central reflecting surface (31) in the horizontal direction; the curvatures of the left second reflecting surface (33) and the right second reflecting surface (35) in the horizontal direction are the same and are both larger than the curvature of the left first reflecting surface (32) in the horizontal direction.
5. A reflective integrator mirror for forming a uniform two-dimensional spot, as claimed in claim 3, wherein: the part between two middle transverse edges (112) is a transverse central reflecting surface (21), the part between two upper transverse edges (112) is an upper reflecting surface (22), the part above the uppermost transverse edge (112) is an upper second reflecting surface (23), the part between two lower transverse edges (112) is a lower reflecting surface (24), and the part below the lowermost transverse edge (112) is a lower second reflecting surface (25);
each sub-reflecting surface (111) on the transverse central reflecting surface (21) has the same curvature in the longitudinal direction, each sub-reflecting surface (111) on the upper reflecting surface (22) has the same curvature in the longitudinal direction, each sub-reflecting surface (111) on the upper two reflecting surfaces (23) has the same curvature in the longitudinal direction, each sub-reflecting surface (111) on the lower reflecting surface (24) has the same curvature in the longitudinal direction, and each sub-reflecting surface (111) on the lower two reflecting surfaces (25) has the same curvature in the longitudinal direction;
and the curvatures of the upper two reflecting surfaces (23), the upper one reflecting surface (22), the transverse central reflecting surface (21), the lower one reflecting surface (24) and the lower two reflecting surfaces (25) in the longitudinal direction are reduced in sequence.
6. The reflective integrator mirror of claim 1, wherein: a fixing hole (121), a water inlet (122) and a water outlet (123) are formed in the bottom surface (12) of the integrating mirror body (1), and the fixing hole (121) is used for fixing the integrating mirror on equipment; the water inlet (122) is used for introducing cooling water into the integrating mirror to cool the integrating mirror, and the cooling water flows out through the water outlet (123).
7. The reflective integrator mirror of claim 1, wherein: the bottom surface (12) of the integrating mirror body (1) is also provided with at least one positioning hole (124) to prevent the integrating mirror from rotating.
8. The reflective integrator mirror of claim 1, wherein: the included angle between the reflecting surface (11) and the bottom surface (12) is 45 degrees; the working distance of the integrating mirror is 300 mm.
9. The reflective integrator mirror of claim 1, wherein: the orthographic projection of the reflecting surface (11) is circular, and the diameter of the orthographic projection is 49.5 mm.
10. The reflective integrator mirror of claim 1, wherein: the integrating mirror body (1) is made of oxygen-free copper TU 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022617396.8U CN213182213U (en) | 2020-11-13 | 2020-11-13 | Reflective integrator for forming uniform two-dimensional light spots |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022617396.8U CN213182213U (en) | 2020-11-13 | 2020-11-13 | Reflective integrator for forming uniform two-dimensional light spots |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213182213U true CN213182213U (en) | 2021-05-11 |
Family
ID=75781841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022617396.8U Active CN213182213U (en) | 2020-11-13 | 2020-11-13 | Reflective integrator for forming uniform two-dimensional light spots |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213182213U (en) |
-
2020
- 2020-11-13 CN CN202022617396.8U patent/CN213182213U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8303290B2 (en) | Method and installation for the production of containers | |
| CN103368066A (en) | Inclined plane type multi-tube semiconductor laser coupling device and method | |
| CN105033250B (en) | A kind of coaxial double light beam laser preheating shapes slow cooling stress delayed release device and method | |
| CN107065155A (en) | A kind of laser cleaning varifocal optical unit and laser cleaner | |
| CN107065215B (en) | Expansible array fibre output laser | |
| CN112269269A (en) | Reflective integrator for forming uniform two-dimensional light spots | |
| CN106711765B (en) | A kind of semiconductor laser cladding light-source structure with three hot spots irradiation one-pass molding function | |
| CN213182213U (en) | Reflective integrator for forming uniform two-dimensional light spots | |
| US9547176B2 (en) | Device for generating laser radiation having a linear intensity distribution | |
| US6373025B1 (en) | Apparatus and method for laser fusion bonding | |
| CN103219648A (en) | Optical fiber coupling system of laser light source | |
| CN109465447A (en) | A kind of increasing material manufacturing method and apparatus of three laser assisteds preheating slow cooling | |
| CN207918694U (en) | A kind of device of the quick sliver cutting of glass | |
| CN108241193A (en) | A kind of more single tube coupled laser devices of high power semi-conductor | |
| CN101788713A (en) | Semiconductor laser glue solidification device and application method thereof | |
| CN111487782A (en) | Transmission type shaping mirror group for forming uniform light spots | |
| CN203398519U (en) | Inclined-surface type multi-diode semiconductor laser coupling device | |
| CN107703636A (en) | The laser dodging device of antireflection | |
| Wang et al. | A homogeneous focusing system for diode lasers and its applications in metal surface modification | |
| CN108427205A (en) | A kind of adjustable delustring of Transflective width is dizzy to homogenize optical system | |
| CN111560612B (en) | Laser cladding device and method capable of changing non-uniform distribution of Gaussian light energy | |
| CN210243981U (en) | Laser linear light spot shaping optical system | |
| KR102612372B1 (en) | Beam generation system for chamfering using Airy beam | |
| CN211956013U (en) | Transmission type shaping mirror group for forming uniform light spots | |
| CN113634880A (en) | Multi-beam water-guided laser processing device and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |