CN109581673A - A kind of linear light spot laser far field focus emission antenna - Google Patents
A kind of linear light spot laser far field focus emission antenna Download PDFInfo
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- CN109581673A CN109581673A CN201811622460.2A CN201811622460A CN109581673A CN 109581673 A CN109581673 A CN 109581673A CN 201811622460 A CN201811622460 A CN 201811622460A CN 109581673 A CN109581673 A CN 109581673A
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- 230000003287 optical effect Effects 0.000 claims abstract description 20
- 239000006185 dispersion Substances 0.000 claims description 5
- 238000009738 saturating Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
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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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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The invention discloses a kind of linear light spot laser far field focus emission antenna, including cylindrical lens group and main beam-expanding system, cylindrical lens group and main beam-expanding system are successively arranged along optical axis direction, and wherein cylindrical lens group is arranged close to laser；The cylindrical lens group includes Plano concave cylindr lens peace pillar lens, and the main beam-expanding system includes preceding group of secondary mirror, organizes secondary mirror, the first primary mirror and the second primary mirror afterwards；Group secondary mirror and rear group secondary mirror combined focal length are negative before described, and the combined focal length of the first primary mirror and the second primary mirror is positive.The present invention sets gradually the linear hot spot that laser far-distance is focused to required size by cylindrical lens group, secondary microscope group and primary mirror group, and focal beam spot laser assembles power density height, to improve laser utilization efficiency.Meanwhile lines hot spot, to improve laser beam for high voltage cable sphere of action, can improve power equipment deicing efficiency along high voltage cable direction.
Description
Technical field
The present invention relates to laser far-distance focus set technical fields more particularly to a kind of linear light spot laser far field to focus hair
Penetrate antenna.
Background technique
Currently, from the 1970s, China has just carried out greatly in order to reduce influence of the icing disaster to power equipment
The electric wire deicing technical equipment research work of amount.
Laser has the features such as energy transmission efficiency is high, directional transmissions, is arrived high power laser light dispensing by transmitting antenna
The power equipment surface that high-altitude freezes, respectively by ice sheet and power equipment Surface absorption, sleet layer will be divided the energy of laser
At fritter, the ice sheet contacted with power equipment surface is melted, and icing is fallen off due to gravity.It has developed both at home and abroad more
Kind high power laser deicing equipment.But existing laser deicing equipment transmitting antenna generallys use telescope without burnt emission mode,
When i.e. laser is transferred to far field, it will dissipate for large round laser facula, and in specific deicing to laser energy using imitating
Rate substantially reduces, and laser energy density reduces in large round laser facula, to eventually result in laser deicing low efficiency.
Summary of the invention
The object of the present invention is to provide a kind of linear light spot laser far field focus emission antennas, and it is poly- to can be realized laser far-distance
Coke is the linear hot spot of required size, and laser is assembled power density and greatly improved, and greatly improves laser utilization efficiency and deicing
Efficiency.
The technical solution adopted by the present invention are as follows:
A kind of linear light spot laser far field focus emission antenna, including cylindrical lens group and main beam-expanding system, cylindrical lens group and master expand
System is successively arranged along optical axis direction, and wherein cylindrical lens group is arranged close to laser；The cylindrical lens group includes that plane-concave column is saturating
The peaceful pillar lens 2 of mirror 1, the main beam-expanding system include preceding group of secondary mirror 3, rear group secondary mirror 4, the first primary mirror 5 and the second primary mirror 6；
Group secondary mirror 3 and rear group 4 combined focal length of secondary mirror are negative before described, and the combined focal length of the first primary mirror 5 and the second primary mirror 6 is positive.
The Plano concave cylindr lens 1 are movably arranged along optical axis direction, the peaceful 2 spacing tune of pillar lens of Plano concave cylindr lens 1
It saves in only change laser a direction dispersion angle.
The preceding group of secondary mirror 3 is movably arranged along optical axis direction, and preceding group of secondary mirror 3 and rear group 4 spacing of secondary mirror adjusting are used for
Change main beam-expanding system focal length, realizes laser facula different distance far field focus.
The Plano concave cylindr lens 1 and preceding group of secondary mirror 3 are movably arranged by screw rod along optical axis direction respectively.
The present invention is set gradually by cylindrical lens group, secondary microscope group and primary mirror group laser far-distance being focused to required size
Linear hot spot, focal beam spot laser assembles power density height, to improve laser utilization efficiency.Meanwhile lines hot spot can be with
Along high voltage cable direction, to improve laser beam for high voltage cable sphere of action, power equipment deicing efficiency is improved.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention includes cylindrical lens group and main beam-expanding system, cylindrical lens group and main beam-expanding system are successively along light
Axis direction setting, wherein cylindrical lens group is arranged close to laser；The cylindrical lens group includes that the peaceful pillar of Plano concave cylindr lens 1 is saturating
Mirror 2, the main beam-expanding system include preceding group of secondary mirror 3, rear group secondary mirror 4, the first primary mirror 5 and the second primary mirror 6；Secondary mirror 3 is organized before described
It is negative with rear group of 4 combined focal length of secondary mirror, the combined focal length of the first primary mirror 5 and the second primary mirror 6 is positive.
The Plano concave cylindr lens 1 are movably arranged along optical axis direction, the peaceful 2 spacing tune of pillar lens of Plano concave cylindr lens 1
It saves in only change laser a direction dispersion angle.
The preceding group of secondary mirror 3 is movably arranged along optical axis direction, and preceding group of secondary mirror 3 and rear group 4 spacing of secondary mirror adjusting are used for
Change main beam-expanding system focal length, realizes laser facula different distance far field focus.
The Plano concave cylindr lens 1 and preceding group of secondary mirror 3 are movably arranged by screw rod along optical axis direction respectively.
A kind of linear light spot laser far field focus emission optical system, total optical system layout are as shown in Figure 1.
The present invention includes cylindrical lens group and main beam-expanding system, and cylindrical lens group includes the peaceful pillar lens 2 of Plano concave cylindr lens 1,
Main beam-expanding system includes preceding group of secondary mirror 3, rear group secondary mirror 4, primary mirror 5 and primary mirror 6；Cylindrical lens group and main beam-expanding system are along optical axis side
To setting, Plano concave cylindr lens 1 and preceding group of secondary mirror 3 are movably arranged along optical axis direction, and preceding group of secondary mirror 3 and rear group secondary mirror 4 combine
Focal length is negative, and the combined focal length of primary mirror 5 and primary mirror 6 is positive.
Laser beam passes sequentially through cylindrical lens group and the main beam-expanding system of adjustable focus, realizes laser far field linear light spot focus emission；
Peaceful 2 spacing of pillar lens of Plano concave cylindr lens 1, which is adjusted, can only change laser a direction dispersion angle；Preceding group of secondary mirror 3 is with after
Group 4 spacing of secondary mirror adjusting can change main beam-expanding system focal length, realize laser facula different distance far field focus.Due to adjustable focus
Cylindrical lens group makes laser beam both direction dispersion angle different, realizes that focal beam spot is stripe shape after far field focus.Root
According to irradiation target range and affiliated laser focused spot size, Plano concave cylindr lens 1 and preceding group of secondary mirror 3 can be adjusted in real time, thus
Control both direction laser spot size.
Application example 1: such as may be implemented within the scope of Laser emission light beam 50m-300m, laser irradiation to target focal spot ruler
Very little 10mm*50mm, laser power 1000W, then laser power density 200W/cm2, this laser power density will not damage high pressure
Cable, while when laser irradiation, linear laser focal beam spot can with direct action 50mm length icing high voltage cable, thus
Not only the laser delivery of energy metric density of deicing equipment had been improved, but also has improved deicing equipment working efficiency.
(1) laser far field Focused Optical system by commonly without burnt laser beam expanding system secondary mirror be split into preceding group of secondary mirror and
After organize secondary mirror, optical system focal length is changed by interval between group secondary mirror before adjusting and rear group secondary mirror, realizes that laser beam converges to
Different distance position, the energy density of raising laser irradiation to distant object.
(2) linear light spot laser far field optical transmitting system is added cylindrical lens group in laser transmitting system, cylindrical lens group by
Plano concave cylindr lens peace pillar lens composition.Change the one of directional divergence angle of laser beam by adjustable column lens separation, from
And far-field laser focal beam spot one direction is extended to lines hot spot.
By the technical characterstic illustrated in patented technology, this optical transmitting antenna, which is realized, is focused to institute for laser far-distance
The linear hot spot of size is needed, focal beam spot laser assembles power density height, to improve laser utilization efficiency.Meanwhile lines
Hot spot, to improve laser beam for high voltage cable sphere of action, can improve power equipment deicing effect along high voltage cable direction
Rate.
Claims (4)
1. a kind of linear light spot laser far field focus emission antenna, it is characterised in that: including cylindrical lens group and main beam-expanding system, column is saturating
Microscope group and main beam-expanding system are successively arranged along optical axis direction, and wherein cylindrical lens group is arranged close to laser；The cylindrical lens group
Including the peaceful pillar lens (2) of Plano concave cylindr lens (1), the main beam-expanding system includes preceding group of secondary mirror (3), organizes secondary mirror (4), the afterwards
One primary mirror (5) and the second primary mirror (6)；It is described before group secondary mirror (3) and afterwards organize secondary mirror (4) combined focal length be negative, the first primary mirror (5) and
The combined focal length of second primary mirror (6) is positive.
2. a kind of linear light spot laser far field focus emission antenna according to claim 1, it is characterised in that: the plano-concave
Cylindrical lens (1) are movably arranged along optical axis direction, and Plano concave cylindr lens (1) peace pillar lens (2) spacing is adjusted for only changing
Laser a direction dispersion angle.
3. a kind of linear light spot laser far field focus emission antenna according to claim 2, it is characterised in that: described preceding group
Secondary mirror (3) is movably arranged along optical axis direction, and preceding group of secondary mirror (3) and rear group secondary mirror (4) spacing adjust and be for changing main expand
System focal length, realizes laser facula different distance far field focus.
4. a kind of linear light spot laser far field focus emission antenna according to claim 3, it is characterised in that: the plano-concave
Cylindrical lens (1) and preceding group of secondary mirror (3) are movably arranged by screw rod along optical axis direction respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811622460.2A CN109581673A (en) | 2018-12-28 | 2018-12-28 | A kind of linear light spot laser far field focus emission antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811622460.2A CN109581673A (en) | 2018-12-28 | 2018-12-28 | A kind of linear light spot laser far field focus emission antenna |
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| Publication Number | Publication Date |
|---|---|
| CN109581673A true CN109581673A (en) | 2019-04-05 |
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| CN201811622460.2A Pending CN109581673A (en) | 2018-12-28 | 2018-12-28 | A kind of linear light spot laser far field focus emission antenna |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040228004A1 (en) * | 2003-02-19 | 2004-11-18 | Sercel Patrick J. | System and method for cutting using a variable astigmatic focal beam spot |
| KR101399985B1 (en) * | 2013-09-13 | 2014-05-28 | (주)엘투케이플러스 | Apparatus adjusting focal spot size of laser beam by using cylindrical optic system |
| CN106556933A (en) * | 2017-01-03 | 2017-04-05 | 哈尔滨工业大学 | It is a kind of can multidimensional adjustment laser beam sheet apparatus for shaping and method |
| CN209215750U (en) * | 2018-12-28 | 2019-08-06 | 中国电子科技集团公司第二十七研究所 | A kind of linear light spot laser far field focus emission antenna |
| CN117215078A (en) * | 2023-10-17 | 2023-12-12 | 航天科工微电子系统研究院有限公司 | Variable divergence angle laser illumination lens based on beam shaping |
-
2018
- 2018-12-28 CN CN201811622460.2A patent/CN109581673A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040228004A1 (en) * | 2003-02-19 | 2004-11-18 | Sercel Patrick J. | System and method for cutting using a variable astigmatic focal beam spot |
| KR101399985B1 (en) * | 2013-09-13 | 2014-05-28 | (주)엘투케이플러스 | Apparatus adjusting focal spot size of laser beam by using cylindrical optic system |
| CN106556933A (en) * | 2017-01-03 | 2017-04-05 | 哈尔滨工业大学 | It is a kind of can multidimensional adjustment laser beam sheet apparatus for shaping and method |
| CN209215750U (en) * | 2018-12-28 | 2019-08-06 | 中国电子科技集团公司第二十七研究所 | A kind of linear light spot laser far field focus emission antenna |
| CN117215078A (en) * | 2023-10-17 | 2023-12-12 | 航天科工微电子系统研究院有限公司 | Variable divergence angle laser illumination lens based on beam shaping |
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