CN111458860A - Laser emitting device with adjustable laser line and control method - Google Patents
Laser emitting device with adjustable laser line and control method Download PDFInfo
- Publication number
- CN111458860A CN111458860A CN202010461865.3A CN202010461865A CN111458860A CN 111458860 A CN111458860 A CN 111458860A CN 202010461865 A CN202010461865 A CN 202010461865A CN 111458860 A CN111458860 A CN 111458860A
- Authority
- CN
- China
- Prior art keywords
- laser
- lens
- emitting device
- line
- adjustable
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/004—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/06—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the phase of light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/12—Fluid-filled or evacuated lenses
- G02B3/14—Fluid-filled or evacuated lenses of variable focal length
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Lenses (AREA)
Abstract
The invention discloses a laser emitting device with adjustable laser lines and a control method, wherein the laser emitting device comprises: the laser beam emitter generates laser, the laser sequentially passes through the deformable liquid lens, the cylindrical lens and the electric control variable-focus lens and then reaches the spectroscope, the laser is split by the spectroscope, one laser beam passes through the optical glass to be imaged on the surface of a target object, the other laser beam reaches the image sensor, the image sensor shoots the imaging condition of a laser line on the surface of the target object and sends image data to the industrial personal computer, and the industrial personal computer outputs control signals for controlling the deformable liquid lens and the electric variable-focus lens. The invention can regulate and control the width and the light intensity of the laser line, solves the problem that the width of the laser line is too large along with the increase of the scanning distance in the traditional three-dimensional laser scanning technology, and widens the application range of the three-dimensional laser scanning technology.
Description
Technical Field
The invention relates to the field of laser scanning and adaptive optics, in particular to a laser emitting device with adjustable laser lines and a control method.
Background
The adaptive optics technology is used for compensating wave front distortion in the optical transmission process, and the core device of the adaptive optics technology is a deformable mirror which is used for generating a wave surface corresponding to the wave front distortion. In the adaptive optical system, a wavefront sensor is usually used for acquiring wavefront characteristics, and a control signal of a deformable mirror is calculated through a closed-loop control algorithm, so that real-time distortion compensation is realized.
Because the cost of the wavefront sensor is high, the image sensor can be used for replacing the wavefront sensor for certain specific application occasions, and iterative optimization calculation is carried out by taking image characteristics such as definition and the like as an objective function. In recent years, adaptive optical systems without wavefront sensors are widely applied to the field of biological microscopy and the like, and related algorithms have been developed and matured.
The three-dimensional laser scanning technology uses laser lines to scan the surface of an object, and a reconstruction algorithm is used to obtain a model of the surface of the object. In a common laser scanning technology, because the focusing position of a laser line is fixed, the laser line widths at different scanning distances are inconsistent, and particularly when the distance is long, the laser line width is too large, so that an algorithm is difficult to operate.
Disclosure of Invention
The embodiment of the invention aims to provide a laser emitting device with an adjustable laser line and a control method, so as to solve the problem that the width of the existing laser line is not adjustable.
In order to achieve the above purpose, the technical solution adopted by the embodiment of the present invention is as follows:
in a first aspect, an embodiment of the present invention provides a laser emitting device with an adjustable laser line, including: laser beam transmitter, liquid lens of deformable, cylindrical lens, automatically controlled zoom lens, spectroscope, image sensor and industrial computer, wherein, laser beam transmitter produces laser, laser loop through liquid lens of deformable, cylindrical lens and the automatically controlled zoom lens after reacing the spectroscope, through the spectroscope beam split back, one of them is restrainted and is passed optical glass and at the formation of image of target object surface, another bundle reachs image sensor, image sensor shoot the laser line at the image forming condition on target object surface to send image data for the industrial computer, the industrial computer output is used for control liquid lens of deformable with the control signal of electronic zoom lens.
Further, the laser beam emitter comprises a laser and a laser collimator, wherein laser emitted by the laser beam emitter is parallel light, and the diameter of the laser beam is smaller than the clear aperture of the deformable liquid lens.
Furthermore, the deformable liquid lens comprises two circular lenses and a plurality of actuators surrounding along the circumference of the circular lenses, and transparent mineral oil is filled between the two lenses.
Furthermore, the actuator generates deformation by accumulating two lenses, and changes the optical paths of the light beams passing through the deformable liquid lens at different positions in the direction vertical to the light beams, so as to control the wavefront characteristics of the light beams.
Furthermore, the actuator is connected with the industrial personal computer through a driver, and the driver converts a control signal of the industrial personal computer into a voltage applied to the actuator.
Further, the cylindrical lens has a focal length F1For converting an incident laser beam of diameter D into an output laser line focused in the y-direction, extended in the x-direction and propagated in the z-direction, the maximum width w of said output laser linemaxCalculated by the following formula:
furthermore, the focal length of the electric control variable-focus lens is a variable F2The focal length F of the lens system is calculated by the following formula:
and d is the distance between the electrically-controlled variable-focus lens and the cylindrical lens, and when the surface of the target object is positioned at the imaging surface of the electrically-controlled variable-focus lens F, the width of the laser line is the minimum.
The laser device comprises a laser beam emitter, a deformable liquid lens, a cylindrical lens, an electric control variable-focus lens, a spectroscope, an image sensor and an industrial personal computer, and is characterized by further comprising a sealed cabin, wherein the laser beam emitter, the deformable liquid lens, the cylindrical lens, the electric control variable-focus lens, the spectroscope, the image sensor and the industrial personal computer are all arranged in the sealed cabin, an optical glass window and a watertight connector are arranged on the sealed cabin, laser passes through the optical glass window to be emitted, and power lines of the laser beam.
In a second aspect, an embodiment of the present invention further provides a method for controlling a laser emitting device with an adjustable laser line, including:
the laser beam emitter generates laser, and the laser sequentially passes through the deformable liquid lens, the cylindrical lens and the electric control variable-focus lens and then reaches the spectroscope;
after the light is split by the spectroscope, one beam of the light passes through the optical glass to be imaged on the surface of a target object, and the other beam of the light reaches the image sensor;
the image sensor shoots the imaging condition of the laser line on the surface of the target object and sends image data to the industrial personal computer;
and the industrial personal computer outputs control signals for controlling the deformable liquid lens and the electric variable-focus lens according to the image data.
Further, the industrial personal computer performs convex optimization operation by using the definition of the image as an objective function and the control signal as an optimization parameter, and obtains the control voltage of the electrically-controlled variable-focus lens and the deformable liquid lens through operation.
According to the technical scheme, the embodiment of the invention provides the laser emitting device with the adjustable laser line, which can be used in the field of three-dimensional laser scanning, solves the problem of limited scanning distance caused by the unadjustable laser line, can self-adaptively adjust the width and the light intensity distribution of the laser line in the using process, and widens the application range of the three-dimensional laser technology. In the embodiment of the invention, the deformable liquid lens is a wavefront compensation device and can control the light intensity distribution of laser, and the electric zoom lens can adjust the focusing position of a laser line by changing the focal length of the voltage control lens and matching with the cylindrical lens, so that the width of the laser line on an imaging surface is changed. Meanwhile, the laser emitting device combines the adaptive optics technology, and also provides an application scheme of the three-dimensional laser scanning technology in special environments such as underwater, high temperature and the like.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a laser emitting device with adjustable laser lines according to an embodiment of the present invention;
in the figure, a laser beam emitter 1, a deformable liquid lens 2, a cylindrical lens 3, an electric zoom lens 4, a spectroscope 5, an optical glass window 6, an image sensor 7, an industrial personal computer 8, a sealed cabin 9, a watertight connector 10, a power line 11 and an object 12.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.
With reference to fig. 1, according to an embodiment of the present invention, in order to solve the problem of limited application field caused by non-adjustable laser line width in the laser scanning field, a laser emitting device with adjustable laser line is provided, and an adaptive optical system is used to achieve the purpose of always keeping the thinnest outgoing laser line, thereby widening the application range of the three-dimensional laser scanning technology. The device includes: the device comprises a laser beam emitter 1, a deformable liquid lens 2, a cylindrical lens 3, an electric zoom lens 4, a spectroscope 5, an image sensor 7 and an industrial personal computer 8. The laser beam emitter 1 generates laser, the laser sequentially passes through the deformable liquid lens 2, the cylindrical lens 3 and the electric control variable-focus lens 4 and then reaches the spectroscope 5, after the laser is split by the spectroscope 5, one laser beam passes through optical glass to be imaged on the surface of a target object 12, the other laser beam reaches the image sensor 7, reflected light of the spectroscope 5 enters the image sensor 7, transmitted light of the spectroscope 5 irradiates the target object, the image sensor 7 is used for shooting the imaging condition of a laser line on the surface of the target object and sending image data to the industrial personal computer 8, and the industrial personal computer 8 outputs control signals for controlling the deformable liquid lens and the electric variable-focus lens.
In this embodiment, the laser beam emitter 1 is used for generating a parallel laser beam, and generally includes a laser for generating laser light and a laser collimator for improving laser quality and generating a parallel laser beam. The diameter of the laser beam is slightly larger than the clear aperture of the deformable liquid lens so as to filter the part with poor quality of the laser beam edge.
In this embodiment, the deformable liquid lens 2 is connected to an industrial personal computer 8, controlled by the industrial personal computer 8, and used for generating a wavefront compensation amount specified by the industrial personal computer, and the element is generally used for adjusting the light intensity distribution of a laser line, and for special environments such as underwater, high temperature, and the like, wavefront distortion generated by environmental influence during laser beam propagation can also be corrected by the deformable liquid lens 2. the deformable liquid lens 2 comprises two circular lens pieces and a plurality of actuators surrounding the circular lens pieces along the circumference, and after voltage is applied to the actuators, the actuators deform to press the circular lens pieces to deform, transparent mineral oil is filled between the two circular lens pieces, the actuators deform by pressing the two lens pieces to change the optical paths of light beams passing through the deformable liquid lens pieces at different positions in the direction perpendicular to the light beams, so as to control the wavefront characteristics of the light beams.
In the present embodiment, the cylindrical lens 3 is used to convert the laser beam into a line laser. The electric zoom lens 4 is matched with the cylindrical lens 3 and used for adjusting the width of the laser line. The electric zoom lens 4 is also controlled by the industrial personal computer 8, and the industrial personal computer 8 applies specified voltage to control the electric zoom lens to generate a corresponding focal length, so that the width change of the laser line is controlled. The focal length range of the combined lens formed by the motorized zoom lens 4 and the cylindrical lens 3 determines the working distance of the laser. The cylindrical lens 3 has a focal length F1For converting an incident laser beam of diameter D into an output laser line focused in the y-direction, extended in the x-direction and propagated in the z-direction, the maximum width w of said output laser linemaxCalculated by the following formula:
the focal length of the electric control variable focus lens is a variable F2The focal length F of the lens system is calculated by the following formula:
and d is the distance between the electrically-controlled variable-focus lens and the cylindrical lens, and when the surface of the target object is positioned at the imaging surface of the electrically-controlled variable-focus lens F, the width of the laser line is the minimum.
The present embodiment is intended to employ, but not limited to, a plano-convex cylindrical lens product of model L J1942L 2 by Thorlabs corporation, usa and an electric zoom lens product of model E L-10-30-TC by Optotune corporation, switzerland.
In this embodiment, all the above devices are installed in a sealed cabin 9, and the sealed cabin 9 is provided with an optical glass window 6 and a watertight connector 10, and the watertight connector 10 and the optical glass window 6 are matched, so as to meet the application requirements of the laser emitting device in special environments.
The embodiment of the invention also provides a control method of the laser emitting device with the adjustable laser line, which comprises the following steps:
the laser beam emitter generates laser, and the laser sequentially passes through the deformable liquid lens, the cylindrical lens and the electric control variable-focus lens and then reaches the spectroscope;
after the light is split by the spectroscope, one beam of the light passes through the optical glass to be imaged on the surface of a target object, and the other beam of the light reaches the image sensor;
the image sensor shoots the imaging condition of the laser line on the surface of the target object and sends image data to the industrial personal computer;
and the industrial personal computer outputs control signals for controlling the deformable liquid lens and the electric variable-focus lens according to the image data.
In this embodiment, the laser beam passes through the spectroscope 5, one beam of the laser beam passes through the optical glass window to form an image on the surface of the target object 12, the other beam of the laser beam reaches the image sensor 7, and the sensor sends the image to the industrial personal computer 8. The industrial personal computer 8 operates a control algorithm by taking image data as input, and calculates to obtain control signals of the deformable liquid lens 2 and the electric zoom lens 4, so that closed-loop control is formed, and regulation and control of a laser line are realized. The actually adopted control algorithm can be a classical wavefront-free self-adaptive iterative algorithm such as a random parallel gradient descent (SPGD) algorithm, a genetic algorithm and the like. The control algorithm of the present embodiment is intended to adopt a random parallel gradient descent (SPGD) algorithm.
The foregoing is only a preferred embodiment of the invention, and those skilled in the art will recognize that the basic idea of the invention may be implemented in many different ways as the technology advances, and therefore the invention and its embodiments are not limited to the examples described above. Any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present disclosure should be covered by the protection scope of the present invention, which should be subject to the protection scope of the claims.
Claims (10)
1. A laser emitting device with adjustable laser lines is characterized by comprising: laser beam transmitter, liquid lens of deformable, cylindrical lens, automatically controlled zoom lens, spectroscope, image sensor and industrial computer, wherein, laser beam transmitter produces laser, laser loop through liquid lens of deformable, cylindrical lens and the automatically controlled zoom lens after reacing the spectroscope, through the spectroscope beam split back, one of them is restrainted and is passed optical glass and at the formation of image of target object surface, another bundle reachs image sensor, image sensor shoot the laser line at the image forming condition on target object surface to send image data for the industrial computer, the industrial computer output is used for control liquid lens of deformable with the control signal of electronic zoom lens.
2. The laser emitting device with the adjustable laser line as claimed in claim 1, wherein the laser beam emitter comprises a laser and a laser collimator, the laser emitted by the laser beam emitter is parallel light, and the diameter of the laser beam is smaller than the clear aperture of the deformable liquid lens.
3. The laser emitting device with the adjustable laser line as claimed in claim 1, wherein: the deformable liquid lens comprises two circular lenses and a plurality of actuators surrounding the circumferences of the circular lenses, and transparent mineral oil is filled between the two lenses.
4. The laser emitting device with the adjustable laser line as claimed in claim 1, wherein: the actuator generates deformation by extruding the two lenses, and changes the optical paths of the light beams passing through the deformable liquid lens at different positions in the direction vertical to the light beams, so that the wave front characteristics of the light beams are controlled.
5. The laser emitting device with the adjustable laser line as claimed in claim 1, wherein: the actuator is connected with the industrial personal computer through a driver, and the driver converts a control signal of the industrial personal computer into a voltage applied to the actuator.
6. The laser emitting device with the adjustable laser line as claimed in claim 1, wherein: the focal length of the cylindrical lens is F1For converting an incident laser beam of diameter D into an output laser line focused in the y-direction, extended in the x-direction and propagated in the z-direction, the maximum width w of said output laser linemaxCalculated by the following formula:
7. the laser emitting device with the adjustable laser line as claimed in claim 6, wherein: the focal length of the electric control variable focus lens is a variable F2The focal length F of the lens system is calculated by the following formula:
and d is the distance between the electrically-controlled variable-focus lens and the cylindrical lens, and when the surface of the target object is positioned at the imaging surface of the electrically-controlled variable-focus lens F, the width of the laser line is the minimum.
8. The laser emitting device with the adjustable laser line as claimed in claim 1, wherein: still include the sealed cabin, laser beam transmitter, deformable liquid lens, cylindrical lens, automatically controlled variable focus lens, spectroscope, image sensor and industrial computer all arrange in the sealed cabin, optical glass window and watertight connector have on the sealed cabin, laser passes through optical glass window outgoing, the power cord of laser beam transmitter and industrial computer passes through watertight connector and external connection.
9. A control method of a laser emitting device with an adjustable laser line is characterized by comprising the following steps:
the laser beam emitter generates laser, and the laser sequentially passes through the deformable liquid lens, the cylindrical lens and the electric control variable-focus lens and then reaches the spectroscope;
after the light is split by the spectroscope, one beam of the light passes through the optical glass to be imaged on the surface of a target object, and the other beam of the light reaches the image sensor;
the image sensor shoots the imaging condition of the laser line on the surface of the target object and sends image data to the industrial personal computer;
and the industrial personal computer outputs control signals for controlling the deformable liquid lens and the electric variable-focus lens according to the image data.
10. The method for controlling a laser emitting device with adjustable laser lines as claimed in claim 1, wherein: and the industrial personal computer performs convex optimization operation by taking the definition of the image as an objective function and the control signal as an optimization parameter, and obtains the control voltage of the electric control variable-focus lens and the deformable liquid lens through operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010461865.3A CN111458860A (en) | 2020-05-27 | 2020-05-27 | Laser emitting device with adjustable laser line and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010461865.3A CN111458860A (en) | 2020-05-27 | 2020-05-27 | Laser emitting device with adjustable laser line and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111458860A true CN111458860A (en) | 2020-07-28 |
Family
ID=71685456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010461865.3A Pending CN111458860A (en) | 2020-05-27 | 2020-05-27 | Laser emitting device with adjustable laser line and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111458860A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022056191A1 (en) * | 2020-09-11 | 2022-03-17 | Impossible Sensing LLC | Method and system for advanced autofocusing spectroscopy |
| CN115236093A (en) * | 2022-09-21 | 2022-10-25 | 苏州高视半导体技术有限公司 | Optical detection system, control method thereof, electronic apparatus, and storage medium |
| CN116560072A (en) * | 2023-07-07 | 2023-08-08 | 南通唐人电子科技有限公司 | Method and device for controlling optical scanning focal plane based on liquid lens |
-
2020
- 2020-05-27 CN CN202010461865.3A patent/CN111458860A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022056191A1 (en) * | 2020-09-11 | 2022-03-17 | Impossible Sensing LLC | Method and system for advanced autofocusing spectroscopy |
| CN115236093A (en) * | 2022-09-21 | 2022-10-25 | 苏州高视半导体技术有限公司 | Optical detection system, control method thereof, electronic apparatus, and storage medium |
| CN115236093B (en) * | 2022-09-21 | 2022-12-23 | 苏州高视半导体技术有限公司 | Optical detection system, control method thereof, electronic device, and storage medium |
| CN116560072A (en) * | 2023-07-07 | 2023-08-08 | 南通唐人电子科技有限公司 | Method and device for controlling optical scanning focal plane based on liquid lens |
| CN116560072B (en) * | 2023-07-07 | 2023-12-19 | 南通唐人电子科技有限公司 | Method and device for controlling optical scanning focal plane based on liquid lens |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111458860A (en) | Laser emitting device with adjustable laser line and control method | |
| CN100585449C (en) | Adaptive scanning optical microscope | |
| CN102985214B (en) | Beam-forming unit for focusing a laser beam and control method therefor | |
| US11287647B2 (en) | Correcting undesired distortions or aberrations and generating desired wavefronts in optical imaging, sensing, signaling and other applications based on bi-valued Walsh functions | |
| US20150055078A1 (en) | Variable beam expander | |
| US20070035809A1 (en) | High speed beam steering/field of view adjustment | |
| CN110196023B (en) | Dual-zoom structured light depth camera and zooming method | |
| CN106461926A (en) | Light scanning microscope with simplified optical system, more particularly with variable pupil position | |
| CN110174075B (en) | Single-zoom-structure optical depth camera and zooming method | |
| US5946143A (en) | Dynamic aberration correction of conformal/aspheric domes and windows for missile and airborne fire control applications | |
| CN112212977B (en) | High-speed high-resolution high-precision ultrahigh-temperature molten pool temperature field online monitoring device and method | |
| JPH08267264A (en) | Laser system | |
| CN103487916B (en) | Based on the off axis paraboloidal mirror control method of high-resolution scientific CCD camera | |
| CN115144978B (en) | Laser shaping device and optical fiber coupling method | |
| CN105388605A (en) | Microscopical imaging system | |
| CN209783544U (en) | Zoom structure optical depth camera | |
| CN112987321B (en) | Method and device for generating high-power vortex laser | |
| CN110500919A (en) | A kind of the laser system of defense and method of quick high accuracy focusing | |
| CN109683306A (en) | It is a kind of for overcoming the wavefront control method of thermal lensing effect | |
| CN212623339U (en) | Laser emitting device with adjustable laser line | |
| CN210605176U (en) | Automatic focusing microscope | |
| CN111025608B (en) | Ultra-compact continuous zooming medium-wave infrared optical system | |
| CN109946829B (en) | Design method for zoom surface shape of deformable mirror in zoom and image stabilization integrated imaging system | |
| JP2004109219A (en) | Scanning optical microscope | |
| CN208351001U (en) | Laser three-dimensional imaging system with real-time wavefront compensation function |
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 |