CN110596904B - Laser plane generating device based on micro-cylindrical lens array - Google Patents
Laser plane generating device based on micro-cylindrical lens array Download PDFInfo
- Publication number
- CN110596904B CN110596904B CN201910928002.XA CN201910928002A CN110596904B CN 110596904 B CN110596904 B CN 110596904B CN 201910928002 A CN201910928002 A CN 201910928002A CN 110596904 B CN110596904 B CN 110596904B
- Authority
- CN
- China
- Prior art keywords
- laser
- micro
- lens array
- module
- cylindrical lens
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0916—Adapting the beam shape of a semiconductor light source such as a laser diode or an LED, e.g. for efficiently coupling into optical fibers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
- G02B27/0961—Lens arrays
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
- G02B27/0966—Cylindrical lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0972—Prisms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
Abstract
The invention discloses a laser plane generating device based on a micro-cylindrical lens array. The device comprises a laser light source module, a rotating prism module, a micro-cylindrical lens array module and an adjusting mechanism; the micro cylindrical lens array module is formed by closely arranging a plurality of micro cylindrical lenses on a flat waveguide substrate made of polymethyl methacrylate materials, a laser light source module emits a bundle of collimated laser, a rotating prism module deflects the transmission direction of the laser by 90 degrees, after the laser irradiates the micro cylindrical lens array module, the transmitted laser light can be widened along the radial direction of the cylindrical lenses, and a laser sector is formed in the space; the gradient and the height position of the laser sector can be flexibly changed by controlling a stepping motor or a rotating prism module. The invention can realize the generation of the laser plane by a simple device and flexibly control the gradient and the height of the laser plane.
Description
Technical Field
The invention relates to a laser plane generating device, in particular to a laser plane generating device based on a micro-cylindrical lens array.
Background
Compared with traditional light sources such as incandescent lamps and light emitting diodes, laser has the advantages of high brightness, high coherence, good directivity and the like, and is widely applied to the fields of optical ranging, optical positioning, optical radars, optical sensing and the like. In many scenes, the distance and the direction of a far target object can be accurately measured by using a laser beam, and compared with a traditional measuring mode, the laser measuring method has the advantages of higher accuracy, more compact structure and lower power consumption. However, the narrow irradiation range of the single laser beam is limited, and the requirements of many scenes cannot be met, for example, when multiple targets need laser calibration at the same time, the single laser beam cannot be realized, and a laser plane is needed. The laser plane has extensive application in aspects such as building engineering and machine-building, for example can generate a horizontally laser plane and assist and accomplish land leveling work, the floating work on level ground and indoor decoration work etc. compare in traditional ink marker and theodolite, not only can save a large amount of manpower and materials with the help of the laser plane, raise the efficiency, but also can reach better effect.
However, the laser plane is generated by deflecting a light beam emitted from a laser by using a rectangular prism or a pentagonal prism, and then driving the prism to rotate rapidly by using a rotating motor, so as to generate a scanned laser plane in a space environment. The generation mode of the laser plane is widely applied to instruments similar to a laser swinger and the like, and although the use requirements of some scenes can be met, the instrument has larger volume, heavier weight and larger energy consumption due to the fact that the instrument comprises a motor.
Disclosure of Invention
In order to overcome the above disadvantages, an object of the present invention is to provide a laser plane generating device based on a micro-cylinder lens array, wherein the micro-cylinder lens array made of PMMA material is used to widen a laser beam along the radial direction of the cylinder lens, a laser sector is formed in the space, the micro-cylinder lens array module is driven to rotate around the laser axis by controlling a stepping motor to change the slope of the laser sector and the rotating prism module is controlled to change the height of the laser sector.
The invention discloses a laser plane generating device based on a micro-cylindrical lens array, which comprises: the laser light source module adopts a semiconductor laser diode, and a collimating lens structure is arranged at an emergent end, so that the divergence angle of emergent laser is reduced; the rotating prism module receives the emergent laser light of the laser light source module and deflects the laser transmission direction by 90 degrees by utilizing mirror reflection; the micro-cylindrical lens array module is formed by closely arranging a plurality of micro-cylindrical lenses on a flat waveguide substrate, laser rays emitted by the rotating prism module are uniformly spread along a certain direction, and laser leaves the micro-cylindrical lens array module to form a laser sector in a free space; the adjusting structure comprises a stepping motor, a thread block, a screw rod and a transmission mechanism, wherein the thread block is connected with the micro-cylindrical lens array module, and the stepping motor drives the thread block on the screw rod through the transmission mechanism to drive the micro-cylindrical lens array module to rotate.
The micro cylindrical lenses on the micro cylindrical lens array module have the same size, the diameter of each cylindrical lens is smaller than the diameter of a light spot of laser emitted by the laser source module, and when laser passes through the micro cylindrical lenses, the length of the broadened light is larger and larger along with the propagation distance, so that a laser sector is formed in a space environment.
One end of the micro-cylindrical lens array module is installed on the thread block, and the stepping motor drives the micro-cylindrical lens array module to rotate around a laser optical axis to form a laser sector with gradient.
The micro-cylindrical lens array module is made of polymethyl methacrylate, the cylindrical lens is formed through thermal molding, and the protruding part is half of the cylindrical lens.
The wavelength of the laser light source module is 635nm or 532 nm.
The rotating prism module is a right-angle prism or a pentagonal prism.
When the rotary prism module moves up and down along the laser optical axis, the height position of the formed laser sector in the space is changed in response.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has the advantages of simple mechanical structure, small device volume, easy installation and adjustment, flexible and convenient use and the like.
2. The laser plane with different heights and different gradients can be realized by controlling the adjusting structure, so that the laser plane with the adjustable height can be applied to more occasions and is more widely applied.
Drawings
FIG. 1 is a block diagram of the module of the laser plane generating device based on micro-cylindrical lens array according to the present invention;
FIG. 2 is a schematic structural diagram of a laser plane generating device based on a micro-cylindrical lens array according to the present invention;
FIG. 3 is a schematic structural diagram of another laser plane generating device based on micro-cylindrical lens array according to the present invention;
FIG. 4 is a schematic structural diagram of a micro-cylindrical lens array module according to the present invention;
FIG. 5 is an image of a laser spot incident on a micro-lenticular lens array;
fig. 6 is an image of a laser spot emitted from the micro-cylinder lens array.
In the figure: the device comprises a laser light source module 1, a right-angle prism 2, a micro-cylindrical lens array module 3, an adjusting mechanism 4, incident laser rays 5, deflection laser rays 6, a laser sector 7 and a pentagonal prism 8.
Detailed Description
The invention is further elucidated with reference to the drawing.
As shown in fig. 1, the laser plane generating apparatus based on the micro-cylindrical lens array of the present invention includes a laser light source module, a rotating prism module, a micro-cylindrical lens array module, and an adjusting mechanism.
Fig. 2 is a schematic structural diagram of a laser plane generating device based on a micro-cylindrical lens array according to the present invention, including: the laser light source module 1 adopts a semiconductor laser diode, a collimating lens structure is arranged at an emergent end, the divergence angle of emergent laser is reduced, and in order to increase the visibility of a laser plane, a laser light source is selected to be red light with a wavelength of 635nm or green light with a wavelength of 532 nm; the rotating prism module adopts a right-angle prism 2, and deflects the laser light 5 received from the laser light source module by 90 degrees by utilizing mirror reflection to emit the laser light; the right-angle prism can move up and down along the incident laser ray 5 to achieve the purpose of adjusting the height of the laser plane. The micro-cylindrical lens array module 3 uniformly spreads laser rays 6 emitted by the rotating prism module along a certain direction, laser leaves the micro-cylindrical lens array module 3 and forms a laser sector 7 in a free space, and the laser sector 7 is vertical to the axial direction of the micro-cylindrical lens; adjust structure 4, including step motor, thread block, lead screw and drive mechanism, the thread block with little cylindricality lens array module 3 is connected, and step motor drives through the thread block on the drive mechanism drive lead screw, drives then little cylindricality lens array module 3 is rotatory, adjusts the slope of laser sector 7.
Fig. 3 is another schematic structural diagram of a laser plane generating device based on a micro-cylindrical lens array according to the present invention, including: the laser light source module 1 adopts a semiconductor laser diode, a collimating lens structure is arranged at an emergent end, the divergence angle of emergent laser is reduced, and in order to increase the visibility of a laser plane, a laser light source is selected to be red light with a wavelength of 635nm or green light with a wavelength of 532 nm; the rotating prism module adopts a pentagonal prism 8, and deflects the laser light 5 received from the laser light source module by 90 degrees by utilizing mirror reflection to emit the laser light; the pentagonal prism 8 can move up and down along the incident laser ray 5 to achieve the purpose of adjusting the height of the laser plane. The micro-cylindrical lens array module 3 uniformly spreads laser rays 6 emitted by the rotating prism module along a certain direction, laser leaves the micro-cylindrical lens array module 3 and forms a laser sector 7 in a free space, and the laser sector 7 is vertical to the axial direction of the micro-cylindrical lens; adjust structure 4, including step motor, thread block, lead screw and drive mechanism, the thread block with little cylindricality lens array module 3 is connected, and step motor drives through the thread block on the drive mechanism drive lead screw, drives then little cylindricality lens array module 3 is rotatory, adjusts the slope of laser sector 7.
Fig. 4 is a schematic structural diagram of a micro-cylindrical lens array module according to the present invention, the micro-cylindrical lens array module is formed by closely arranging a plurality of micro-cylindrical lenses on a slab waveguide substrate, the micro-cylindrical lens array module may be made of polymethyl methacrylate (PMMA), and the cylindrical lenses are formed by thermal molding.
Application examples
Fig. 5 is a laser spot image of the incident micro-cylindrical lens array, the laser spot of the incident micro-cylindrical lens array is simulated through ZEMAX optical simulation software, the wavelength of the laser light source is set to be 635nm, the diameter of the laser spot is 7mm, the laser spot does not change before the laser is not incident on the micro-cylindrical lens array module, the circularly symmetric shape is maintained, and fig. 5 is the simulated laser spot image of the incident micro-cylindrical lens array.
Fig. 6 is an image of a laser spot emitted from the micro-cylinder lens array. Simulating laser spots incident on the micro cylindrical lens array by ZEMAX optical simulation software, wherein the wavelength of a laser source is set to be 635nm, the diameter of the laser spots is 7mm, the height of each convex part of each micro cylindrical lens in the micro cylindrical lens array module is set to be 0.05mm, the width of each convex part of each micro cylindrical lens is set to be 0.32mm, and a laser spot image is obtained by simulation when laser is emitted from the micro cylindrical lens array and transmitted for 1000mm, as shown in FIG. 6; from the results in the figure, it can be seen that the originally circularly symmetric laser spot becomes a slender laser line, the length of the laser line is about 800mm, and the width is equal to the diameter of the incident laser spot, which is 7 mm.
Claims (2)
1. A laser plane generating device based on micro-cylindrical lens array is characterized in that: the device comprises a laser light source module, a rotating prism module, a micro-cylindrical lens array module and an adjusting mechanism;
the laser light source module adopts a semiconductor laser diode, and the emergent end of the semiconductor laser diode is provided with a collimating lens structure, so that the divergence angle of emergent laser is reduced;
the rotating prism module receives the emergent laser light of the laser light source module and deflects the laser transmission direction by 90 degrees by utilizing mirror reflection;
the micro columnar lens array module is formed by tightly arranging a plurality of micro columnar lenses on a flat waveguide substrate, and uniformly spreads laser rays emitted by the rotating prism module to form a laser sector;
the adjusting mechanism comprises a stepping motor, a thread block, a screw rod and a transmission mechanism, wherein the thread block is connected with the micro-cylindrical lens array module, and the stepping motor drives the thread block on the screw rod to be driven through the transmission mechanism so as to drive the micro-cylindrical lens array module to rotate;
the micro cylindrical lenses on the micro cylindrical lens array module have the same size, and the diameter of each cylindrical lens is smaller than the diameter of a light spot of laser emitted by the laser light source module;
the micro-cylindrical lens array module is made of polymethyl methacrylate, the cylindrical lens is formed by thermal molding, part of the cylindrical lens protrudes out of the slab waveguide substrate, and the rest part of the cylindrical lens is integrated with the slab waveguide substrate;
one end of the micro columnar lens array module is arranged on the thread block, and the stepping motor works to drive the micro columnar lens array module to rotate around a laser optical axis to form a laser sector with gradient;
the rotating prism module is a right-angle prism or a pentagonal prism;
the rotating prism module can move up and down along the laser optical axis.
2. The laser facet generation apparatus of claim 1, wherein: the wavelength of the laser light source module is 635nm or 532 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928002.XA CN110596904B (en) | 2019-09-27 | 2019-09-27 | Laser plane generating device based on micro-cylindrical lens array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928002.XA CN110596904B (en) | 2019-09-27 | 2019-09-27 | Laser plane generating device based on micro-cylindrical lens array |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110596904A CN110596904A (en) | 2019-12-20 |
| CN110596904B true CN110596904B (en) | 2021-05-18 |
Family
ID=68864355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910928002.XA Active CN110596904B (en) | 2019-09-27 | 2019-09-27 | Laser plane generating device based on micro-cylindrical lens array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110596904B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664391B (en) * | 2021-09-03 | 2024-06-07 | 上海百琪迈科技(集团)有限公司 | High-efficient thin material combination formula laser fast cutting equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5095386A (en) * | 1990-05-01 | 1992-03-10 | Charles Lescrenier | Optical system for generating lines of light using crossed cylindrical lenses |
| CN1294551A (en) * | 1997-04-23 | 2001-05-09 | 蓝天研究所 | Process for mfg. cylindrical microlenses |
| CN1629601A (en) * | 2003-12-15 | 2005-06-22 | 上海浩顺科技有限公司 | Laser test control device and method for pavement construction flatness |
| CN1646848A (en) * | 2002-04-19 | 2005-07-27 | 诺斯克埃莱克特罗奥普体克公司 | Pipeline internal inspection device and method |
| CN107044847A (en) * | 2015-11-04 | 2017-08-15 | 赫克斯冈技术中心 | Laser module including microlens array |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2320985Y (en) * | 1998-03-04 | 1999-05-26 | 吴小勇 | Digital display laser slope measuring instrument |
| CN109343226A (en) * | 2018-11-22 | 2019-02-15 | 常州英诺激光科技有限公司 | A kind of optical system that laser facula is converted to uniform alignment hot spot |
-
2019
- 2019-09-27 CN CN201910928002.XA patent/CN110596904B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5095386A (en) * | 1990-05-01 | 1992-03-10 | Charles Lescrenier | Optical system for generating lines of light using crossed cylindrical lenses |
| CN1294551A (en) * | 1997-04-23 | 2001-05-09 | 蓝天研究所 | Process for mfg. cylindrical microlenses |
| CN1646848A (en) * | 2002-04-19 | 2005-07-27 | 诺斯克埃莱克特罗奥普体克公司 | Pipeline internal inspection device and method |
| CN1629601A (en) * | 2003-12-15 | 2005-06-22 | 上海浩顺科技有限公司 | Laser test control device and method for pavement construction flatness |
| CN107044847A (en) * | 2015-11-04 | 2017-08-15 | 赫克斯冈技术中心 | Laser module including microlens array |
Non-Patent Citations (1)
| Title |
|---|
| 轨道车辆车底多曲面检测与补偿***;王子洲;《中国优秀硕士学位论文全文数据库工程科技II辑》;20190615(第6期);正文第5-6页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110596904A (en) | 2019-12-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104914445A (en) | Composite scanning system used for laser radar | |
| CN102305988A (en) | Automatic focusing device for projective bulb based on light spot detection and use method thereof | |
| US20240027584A1 (en) | Detection device and control method thereof | |
| CN107632297B (en) | A kind of microlight-type laser irradiation device | |
| CN110596904B (en) | Laser plane generating device based on micro-cylindrical lens array | |
| JP2021529973A (en) | Laser device with low structural height | |
| CN211786402U (en) | Light beam shaping device for laser radar | |
| CN111308725B (en) | Beam shaping device for laser radar and shaping method of beam shaping device for laser radar on far-field light spots | |
| CN109283805A (en) | Laser direct-writing device based on Darman raster | |
| CN109031241A (en) | Laser radar emission system | |
| CN202275254U (en) | Projection lamp bulb automatic focusing device based on light spot detection | |
| CN111272083B (en) | Measuring device and measuring method for off-axis quantity of off-axis parabolic mirror | |
| CN108333858A (en) | Laser emitter, optoelectronic device, depth camera and electronic device | |
| CN112799033A (en) | Large-field-of-view scanning MEMS laser radar device and scanning system | |
| CN110611243A (en) | Tunable laser plane generating device | |
| CN210693009U (en) | Tunable laser plane generating device | |
| CN109871035A (en) | A kind of accuracy control method that light beam is directed toward | |
| CN112781839B (en) | Lens performance test system | |
| CN205156922U (en) | Laser marking device based on reflection of circular cone off -axis | |
| CN114815132A (en) | Dimming system and dimming method of gradient array reflector | |
| CN108318889A (en) | One kind being based on MEMS micromirror laser range sensor | |
| CN115145020A (en) | Optical adjusting system and method for enabling laser propagation direction to be parallel to optical platform | |
| CN105371830A (en) | Laser marking device based on cone off-axis reflection | |
| CN112684464A (en) | Device and method for projecting laser line and optical detection distance measuring device | |
| CN113534483A (en) | Distortion-eliminating dot matrix projection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |