CN109343225A - Convergence method and system for beam energy of lidar and fiber-coupled laser - Google Patents
Convergence method and system for beam energy of lidar and fiber-coupled laser Download PDFInfo
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- CN109343225A CN109343225A CN201811122797.7A CN201811122797A CN109343225A CN 109343225 A CN109343225 A CN 109343225A CN 201811122797 A CN201811122797 A CN 201811122797A CN 109343225 A CN109343225 A CN 109343225A
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- coupled laser
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- 239000000835 fiber Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 description 17
- 230000009471 action Effects 0.000 description 7
- 239000000571 coke Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000000452 restraining effect Effects 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- 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
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- Optics & Photonics (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a kind of laser radar, the convergence method of the beam energy of fiber coupled laser and system, collective system includes: the focus pack for being focused processing to outgoing beam；And the first collimator assembly and the second collimator assembly of relative spacing setting, first collimator assembly is set between focusing device and the second collimator assembly, and first collimator assembly be set to focusing device focal position or close to focusing device focal position be arranged, first collimator assembly is equipped with the first recess portion close to one end of focusing device, first collimator assembly is equipped with the second recess portion far from one end of focusing device, and the curvature of the first recess portion is less than the curvature of the second recess portion.The convergence method and system of the beam energy of fiber coupled laser can effectively restrain the energy field of outgoing beam, adapt to the application scenarios complicated；In this way, being suitable for the application scenarios complicated using the laser radar of the convergence method and system.
Description
Technical field
The present invention relates to laser technology fields, and in particular to the beam energy of a kind of laser radar, fiber coupled laser
Convergence method and system.
Background technique
Laser has the characteristics that monochromaticjty, coherence and directionality are preferable, and therefore, laser is all obtained in various industries and field
Universal application is arrived.With the further development and emergence of artificial intelligence, the application of laser also towards the marketization and is complicated
Direction continues to develop.In increasingly complicated application scenarios, the energy field for how controlling laser exit beam well becomes
Restrict a big obstacle of laser development.The energy of traditional fiber coupled laser, outgoing beam is easy loss, it is difficult to carry out quasi-
True control can not adapt to complicated application scenarios.
Summary of the invention
Based on this, it is necessary to provide a kind of laser radar, fiber coupled laser beam energy convergence method and be
System, can effectively restrain the energy field of outgoing beam, adapt to the application scenarios complicated；In this way, using the convergence method and
The laser radar of system is suitable for the application scenarios complicated.
Its technical solution is as follows:
On the one hand, this application provides a kind of collective systems of the beam energy of fiber coupled laser, comprising: focuses dress
It sets, for being focused processing to outgoing beam, focuses on outgoing beam a bit, obtain focused light source；And collimator apparatus, it uses
In carrying out collimation processing to the focused light source, so that the energy field of outgoing beam is restrained, the collimator apparatus includes phase
To spaced first collimator assembly and the second collimator assembly, first collimator assembly is set to the focusing device and institute
It states between the second collimator assembly, and first collimator assembly is set to the focal position of the focusing device or close to described poly-
The focal position of coke installation is arranged, and first collimator assembly is equipped with the first recess portion close to one end of the focusing device, described
First collimator assembly is equipped with the second recess portion far from one end of the focusing device, and the curvature of first recess portion is less than described the
The curvature of two recess portions；Wherein, the focusing device, first collimator assembly and second collimator assembly are equipped with identical master
Optical axis.
The collective system of the beam energy of above-mentioned fiber coupled laser in use, focusing device, the first collimator assembly and
Second collimator assembly is equipped with identical primary optical axis, and the outgoing beam that fiber coupled laser issues first passes around focusing device,
Processing is focused to outgoing beam by focusing device, so that outgoing beam focuses on a bit, i.e., outgoing beam is gathered in poly-
The focal position of coke installation, to obtain focused light source；The curvature of first recess portion is less than the curvature of second recess portion, the focusing
It, can be on the second recess portion using further diverging, finally after light source carries out tentatively diverging under the action of the first recess portion
Carry out final collimation adjustment by the effect of the second collimator assembly so that the energy field of outgoing beam obtain it is effective, fast
The convergence and control of speed can adapt to the application scenarios complicated；Meanwhile the directionality of outgoing beam also can be protected effectively
Card.
Technical solution is illustrated further below:
The focus of first recess portion is set to the focal position of the focusing device or leans in one of the embodiments,
The focal position setting of the nearly focusing device.It so, it is possible so that the first collimator assembly is to the dissipating effect of focused light source, from
And promote the convergence effect of the energy field of final outgoing beam.
The focusing device includes spherical lens, free-form surface lens, cylindrical mirror or binary in one of the embodiments,
At least one of diffractive optical element.
In one of the embodiments, second collimator assembly include spherical lens, free-form surface lens, cylindrical mirror or
At least one of binary diffraction device.
In one of the embodiments, second collimator assembly be set as relative spacing setting the second spherical lens and
Third spherical lens, second spherical lens are set between first collimator assembly and the third spherical lens, and
The convex surface of second spherical lens and the convex surface of the third spherical lens deviate from the first collimator assembly setting.Such as
This, can carry out final collimation adjustment, so that the energy field of final outgoing beam is obtained to the light beam being emitted from the second recess portion
To effectively and rapidly restraining.
Second spherical lens is additionally provided with use close to one end of first collimator assembly in one of the embodiments,
In the third recess portion of divergent beams.It so, it is possible so that the light beam into the second collimator assembly is adequately dissipated, be final
Collimation adjustment be ready.
The focus of the third recess portion is set to the focal position of second recess portion or leans in one of the embodiments,
The focal position setting of nearly second recess portion.It so, it is possible to promote hair of the third recess portion to the light beam being emitted from the second recess portion
Dissipate effect so that the energy field of outgoing beam it is final convergence effect it is more preferable.
On the other hand, present invention also provides a kind of convergence methods of the beam energy of fiber coupled laser, including with
Lower step: processing is focused to outgoing beam, outgoing beam is focused on a bit, obtains focused light source；To the focusing light
Source carries out collimation processing, so that the energy field of outgoing beam is restrained.
The convergence method of the beam energy of the fiber coupled laser of above-described embodiment, what fiber coupled laser issued
Outgoing beam first passes around focusing device, is focused processing to outgoing beam by focusing device, so that outgoing beam focuses
In a bit, i.e. outgoing beam is gathered in the focal position of focusing device, to obtain focused light source；The focused light source is filled in collimation
After carrying out tentatively diverging under the action of first recess portion of the first collimator assembly set, second further in the first collimator assembly is recessed
Diverging is again passed by portion, final collimation adjustment is finally carried out by the effect of the second collimator assembly, so that emergent light
The energy field of beam is effectively and rapidly restrained and is controlled, and can adapt to the application scenarios complicated；Meanwhile outgoing beam
Directionality can also be effectively guaranteed.
In the step of carrying out collimation processing to the focused light source described in one of the embodiments, comprising: poly-
The focal position of coke installation or the focus attachment of focusing device carry out collimation processing to the focused light source.It can effectively, quickly
Convergence outgoing beam energy field, also ensure the directionality of collimation treated outgoing beam.
In another aspect, present invention also provides a kind of laser radar, including above-mentioned fiber coupled laser beam energy
Collective system.
Above-mentioned laser radar in use, due to the focusing device of the collective system of the beam energy of fiber coupled laser,
First collimator assembly and the second collimator assembly are equipped with identical primary optical axis, and the outgoing beam that fiber coupled laser issues is first
By focusing device, processing is focused to outgoing beam by focusing device, so that outgoing beam focuses on a bit, that is, is emitted
Light beam is gathered in the focal position of focusing device, to obtain focused light source；Since the curvature of the first recess portion is less than described second
The curvature of recess portion, the focused light source carried out under the action of the first recess portion tentatively diverging after, can on the second recess portion using
Further diverging finally carries out final collimation adjustment by the effect of the second collimator assembly, so that outgoing beam
Energy field is effectively and rapidly restrained and is controlled, so that laser radar can adapt to the application scenarios complicated；Together
When, the directionality of the outgoing beam of laser radar can also be effectively guaranteed.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the collective system of the beam energy of the fiber coupled laser of one embodiment；
Fig. 2 is the index path of the collective system of the beam energy of the fiber coupled laser of Fig. 1；
Fig. 3 is the flow chart of the convergence method of the beam energy of the fiber coupled laser of one embodiment.
Description of symbols:
100, focusing device, the 110, first spherical lens, 200, collimator apparatus, the 210, first collimator assembly, 211, first
Recess portion, the 212, second recess portion, the 220, second collimator assembly, the 221, second spherical lens, 222, third spherical lens, 2211,
Three recess portions.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, below in conjunction with attached drawing and specific embodiment party
Formula, the present invention is further described in detail.It should be understood that the specific embodiments described herein are only to solve
The present invention is released, and the scope of protection of the present invention is not limited.
It should be noted that it can be directly another when element is referred to as " being set to ", " being fixedly arranged on " another element
On a element or there may also be elements placed in the middle.When element is referred to as " being fixedly arranged on " another element, or with another yuan
Part " is fixedly connected ", and can be the mode of being detachably fixed between them is also possible to non-removable fixed form.When a member
Part is considered as " connection ", " sealed connection " another element, it can be directly to another element or may be same
When there are centering elements.Term as used herein "vertical", "horizontal", "left" and "right", "upper", "lower" and similar
Statement for illustrative purposes only, be not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the constraint present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
The similar term such as heretofore described " first ", " second ", " third " does not represent specific quantity and sequence, only
It is the differentiation for title.
As shown in Figures 1 and 2, one embodiment of the present of invention discloses a kind of beam energy of fiber coupled laser
Collective system, comprising: focusing device 100 focuses on outgoing beam a bit, obtain for being focused processing to outgoing beam
To focused light source；And collimator apparatus 200, for carrying out collimation processing to focused light source, so that the energy field of outgoing beam obtains
Convergence, collimator apparatus 200 include the first collimator assembly 210 and the second collimator assembly 220 of relative spacing setting, the first collimation group
Part 210 is set between focusing device 100 and the second collimator assembly 220, and the first collimator assembly 210 is set to focusing device
100 focal position is arranged close to the focal position of focusing device 100, and the first collimator assembly 210 is close to focusing device 100
One end is equipped with the first recess portion 211, and the first collimator assembly 210 is equipped with the second recess portion 212, and the far from one end of focusing device 100
Curvature of the curvature of one recess portion 211 less than the second recess portion 212；Wherein, focusing device 100, the first collimator assembly 210 and second are quasi-
Straight component 220 is equipped with identical primary optical axis.
The collective system of the beam energy of the fiber coupled laser of above-described embodiment is in use, focusing device 100, first
Collimator assembly 210 and the second collimator assembly 220 are equipped with identical primary optical axis, and the outgoing beam that fiber coupled laser issues is first
Focusing device 100 is first passed through, processing is focused to outgoing beam by focusing device 100, so that outgoing beam focuses on one
Point, i.e. outgoing beam are gathered in the focal position of focusing device 100, to obtain focused light source；The curvature of first recess portion 211 is small
It, can be second after which carries out tentatively diverging under the action of the first recess portion 211 in the curvature of the second recess portion 212
Using further diverging on recess portion 212, final collimation adjustment is finally carried out by the effect of the second collimator assembly 220,
So that the energy field of outgoing beam is effectively and rapidly restrained and controlled, it can adapt to the application scenarios complicated；Together
When, the directionality of outgoing beam can also be effectively guaranteed.
It needs to be illustrated, close to focal position, setting allows for mismachining tolerance and installation error, only needs to meet
In allowable range of error.
As shown in Fig. 2, further, the focus of the first recess portion 211 is set to the focal position or close of focusing device 100
The focal position of focusing device 100 is arranged.It so, it is possible so that focused light source is successively recessed by the first recess portion 211 and second
After the diverging in portion 212, it is able to carry out preliminary collimation adjustment, carries out final standard under the action of the second collimator assembly 220
After straight adjustment, the energy field of outgoing beam is enabled to obtain more preferable, faster convergence.The focus and focusing of first recess portion 211
The distance between focus of device 100 is more in short-term, better to the convergence effect of outgoing beam.
In one embodiment, focusing device 100 includes spherical lens, free-form surface lens, cylindrical mirror or binary diffraction
At least one of device.Utilize at least one of spherical lens, free-form surface lens, cylindrical mirror or binary diffraction device pair
Outgoing beam is focused processing, so that outgoing beam is assembled in its focal position, to obtain focused light source.
In other embodiments, focusing device 100 can also be existing and can arbitrarily be focused to outgoing beam
The device of processing need to only meet and enable to outgoing beam that can assemble to obtain focused light source.
As shown in Figures 1 and 2, specific in the present embodiment, focusing device 100 is set as the of two relative spacings settings
One spherical lens 110, and the convex surface relative spacing setting of two the first spherical lenses 110.Utilize first the first spherical lens
110 pairs of outgoing beams carry out preliminary diverging, then using second 110 pairs of the first spherical lens diverging after outgoing beam into
First collimator assembly 210 is set to second the first spherical lens so that the focusing effect of outgoing beam is more preferable by line focusing
110 focus attachment, so that the outgoing beam after second the first spherical lens 110 focuses is in the first collimator assembly 210
Collimation adjustment is able to carry out under effect.
In one embodiment, the second collimator assembly 220 includes spherical lens, free-form surface lens, cylindrical mirror or binary
At least one of diffractive optical element.Utilize at least one in spherical lens, free-form surface lens, cylindrical mirror or binary diffraction device
Kind carries out final collimation to the outgoing beam projected from the first collimator assembly 210 and handles, so that the energy of outgoing beam
It is effectively restrained, simultaneously, it is ensured that the directionality of outgoing beam.
In other embodiments, the second collimator assembly 220 can also be existing and can arbitrarily carry out to outgoing beam
The device of processing is collimated, need to only meet and enable to the energy field of outgoing beam that can effectively be restrained.
As shown in Figures 1 and 2, specific in the present embodiment, the second collimator assembly 220 is set as the of relative spacing setting
Two spherical lenses 221 and third spherical lens 222, the second spherical lens 221 are set to the first collimator assembly 210 and third spherical surface
Between lens 222, and the convex surface of the second spherical lens 221 and the convex surface of third spherical lens 222 deviate from the first collimator assembly
210 settings.The light beam issued from the second recess portion 212 of the first collimator assembly 210 is carried out by the second spherical lens 221 preliminary
Collimation adjustment, then final collimation tune is carried out to the light beam issued from the second spherical lens 221 by third spherical lens 222
It is whole, so that the energy field of outgoing beam can effectively and rapidly be restrained.
As shown in Figures 1 and 2, further, the second spherical lens 221 is also set close to one end of the first collimator assembly 210
There is the third recess portion 2211 for divergent beams.The light beam emitted from the second recess portion 212 of the first collimator assembly 210 passes through third
The diverging of recess portion 2211 and then the diverging on the convex surface by the second spherical lens 221, improve the dissipating effect of light beam, make
The collimation adjustment obtained finally more effective, quickly can restrain the energy field of transmitting light beam.
As shown in Figures 1 and 2, further, the focus of third recess portion 2211 is set to the focus position of the second recess portion 212
It sets or is arranged close to the focal position of the second recess portion 212.It so, it is possible further to be promoted third recess portion 2211 to recessed from second
The dissipating effect for the light beam that portion 212 is emitted, to further improve the energy field for finally collimating outgoing beam adjusted
Degree of convergence and convergence rate, but also the directionality of final outgoing beam is more preferable.The focus of third recess portion 2211 and second
The distance between focus of recess portion 212 is more in short-term, better to the dissipating effect of light beam.
As shown in figure 3, one embodiment of the present of invention also discloses a kind of receipts of the beam energy of fiber coupled laser
Hold back method, comprising the following steps: processing is focused to outgoing beam, outgoing beam is focused on a bit, obtains focused light source；
Collimation processing is carried out to focused light source, so that the energy field of outgoing beam is restrained.
The convergence method of the beam energy of the fiber coupled laser of above-described embodiment, what fiber coupled laser issued
Outgoing beam first passes around focusing device 100, processing is focused to outgoing beam by focusing device 100, so that emergent light
Beam focuses on a bit, i.e. outgoing beam is gathered in the focal position of focusing device 100, to obtain focused light source；The focusing light
After source carries out tentatively diverging under the action of the first recess portion 211 of the first collimator assembly 210 of collimator apparatus 200, further exist
Diverging is again passed by second recess portion 212 of the first collimator assembly 210, is finally carried out by the effect of the second collimator assembly 220
Final collimation adjustment, so that the energy field of outgoing beam is effectively and rapidly restrained and controlled, can adapt to complexity
The application scenarios of change；Meanwhile the directionality of outgoing beam can also be effectively guaranteed.
Further, in the step of carrying out collimation processing to the focused light source, comprising: in the coke of focusing device 100
The focus attachment of point position or focusing device 100 carries out collimation processing to focused light source.In this way, outgoing beam is in focusing device
100 focal position can carry out collimation processing after assembling to obtain focused light source, improve the efficiency and effect of collimation processing,
So as to effectively and rapidly restraining the energy field of outgoing beam, collimation is also ensured treated the directionality of outgoing beam.
One embodiment of the present of invention also discloses a kind of laser radar, and the fiber coupling including any of the above-described embodiment swashs
The collective system of the beam energy of light device.
The laser radar of above-described embodiment in use, due to the beam energy of fiber coupled laser collective system it is poly-
Coke installation 100, the first collimator assembly 210 and the second collimator assembly 220 are equipped with identical primary optical axis, and fiber coupled laser issues
The outgoing beam come first passes around focusing device 100, is focused processing to outgoing beam by focusing device 100, makes to obtain
Irradiating light beam focuses on a bit, i.e. outgoing beam is gathered in the focal position of focusing device 100, to obtain focused light source；Due to
Less than the curvature of the second recess portion 212, which carries out first the curvature of first recess portion 211 under the action of the first recess portion 211
After step diverging, it can finally pass through the effect of the second collimator assembly 220 on the second recess portion 212 using further diverging
Final collimation adjustment is carried out, so that the energy field of outgoing beam is effectively and rapidly restrained and is controlled, so that
Laser radar can adapt to the application scenarios complicated；Meanwhile the directionality of the outgoing beam of laser radar can also obtain effectively
Guarantee.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
Only several embodiments of the present invention are expressed for above embodiments, and the description thereof is more specific and detailed, but can not
Therefore it is interpreted as the constraint to patent of invention range.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from present inventive concept, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811122797.7A CN109343225A (en) | 2018-09-26 | 2018-09-26 | Convergence method and system for beam energy of lidar and fiber-coupled laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811122797.7A CN109343225A (en) | 2018-09-26 | 2018-09-26 | Convergence method and system for beam energy of lidar and fiber-coupled laser |
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| CN109343225A true CN109343225A (en) | 2019-02-15 |
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| CN201811122797.7A Pending CN109343225A (en) | 2018-09-26 | 2018-09-26 | Convergence method and system for beam energy of lidar and fiber-coupled laser |
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| KR20130072713A (en) * | 2011-12-22 | 2013-07-02 | 삼성전기주식회사 | Apparatus and method for controlling beam size |
| CN105980912A (en) * | 2013-12-09 | 2016-09-28 | 通快激光有限责任公司 | Optical assembly for beam shaping of a laser beam for a laser processing machine |
| CN208834013U (en) * | 2018-09-26 | 2019-05-07 | 深圳市速腾聚创科技有限公司 | The collective system and laser radar of the beam energy of fiber coupled laser |
-
2018
- 2018-09-26 CN CN201811122797.7A patent/CN109343225A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020110320A1 (en) * | 2001-02-12 | 2002-08-15 | Silicon Light Machines | Illumination system for one-dimensional spatial light modulators employing multiple light sources |
| CN1687840A (en) * | 2005-04-30 | 2005-10-26 | 中国科学院长春光学精密机械与物理研究所 | Apparatus for aligning and focusing high-power semiconductor laser array light beam |
| KR20130072713A (en) * | 2011-12-22 | 2013-07-02 | 삼성전기주식회사 | Apparatus and method for controlling beam size |
| CN105980912A (en) * | 2013-12-09 | 2016-09-28 | 通快激光有限责任公司 | Optical assembly for beam shaping of a laser beam for a laser processing machine |
| CN208834013U (en) * | 2018-09-26 | 2019-05-07 | 深圳市速腾聚创科技有限公司 | The collective system and laser radar of the beam energy of fiber coupled laser |
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Application publication date: 20190215 |