CN202904126U - Linear light beam shaping optics system - Google Patents
Linear light beam shaping optics system Download PDFInfo
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- CN202904126U CN202904126U CN201220631115.7U CN201220631115U CN202904126U CN 202904126 U CN202904126 U CN 202904126U CN 201220631115 U CN201220631115 U CN 201220631115U CN 202904126 U CN202904126 U CN 202904126U
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- linear beam
- optical fiber
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Abstract
The utility model relates to a linear light beam shaping optics system. The system comprises a laser light source, an optical fiber coupling system, an optical fiber and a light beam focusing system. The light beam focusing system comprises a lens group and a linear light beam shaping system. The linear light beam shaping system comprises a cylindrical lens and an improved Powell prism. A laser emitted by the laser light source is coupled and entered into the optical fiber via the optical fiber coupling system and is emitted to a spherical lens group after being transmitted by the optical fiber. The light beam emitted from the spherical lens group forms a broom-shaped beam in space via the cylindrical lens and the improved Powell prism. The broom-shaped beam is gradually and vertically focused and is emitted laterally as a fan shape. A focus point is generated vertically. Finally, the linear light beam is formed, wherein the light beam has the following characteristics that energy distribution is uniform; a certain flare angle is possessed; a length and a width accord with application needs of road detection, track detection and the like.
Description
Technical field
The utility model relates to a kind of linear beam shaping optical system, particularly relates to a kind of road survey illumination linear beam shaping optical system.
Background technology
The Scientific Engineering application scenarios such as construction work, road survey, track traffic monitoring all need suitable linear laser beam as light source, require this linear beam to have certain illumination, emission angle, transmitting range, and linear beam will reach the certain linearity and live width index, and its Laser beam energy distribution is relatively even.Usually, when laser beam process cylindrical lens or common Bao Weir prism, cylindrical lens or Bao Weier prism all can be expanded in one direction laser beam and form linear beam, the formed linear beam of cylindrical lens has intermediate energy and distributes higher, the characteristics that the edge energy distribution is lower, the Bao Weier prism is then opposite, and the energy distribution of the linear beam of its formation has a little less than the centre, the characteristic that the edge is strong.
In the present real system, usually use otherwise cylindrical lens system just, or Bao Weier prism system just.But when no matter laser beam passed through independent cylindrical lens system or independent Bao Weier prism system, the problem inhomogeneous with marginal distribution in the middle of the energy distribution of formed linear beam all exists can't obtain the good linear beam of energy distribution of laser.
Summary of the invention
Goal of the invention:
For the problems referred to above, the utility model has adopted cylindrical lens+follow-on Bao Weir prism structure, namely utilize cylindrical lens to control incident area and the energy distribution of the light beam that incides the Bao Weier prism, utilize the ridge angle of Bao Weier prism to control linearity emission angle, utilize the ridge of designed Bao Weier prism to be shaped as the distribution that non-spherical structure is controlled the output energy, thereby realize the homogeneous energy distribution of linear beam.
Technical scheme:
The utility model is achieved through the following technical solutions:
A kind of linear beam shaping optical system, it is characterized in that: the LASER Light Source that comprises radiation laser, LASER Light Source the place ahead is provided with fiber coupling system, fiber coupling system the place ahead is provided with optical fiber, laser is coupled in the optical fiber through fiber coupling system, optical fiber the place ahead is provided with light beam focusing system, light beam focusing system comprises lens combination and is arranged on the linear beam shaping system in lens combination the place ahead, the linear beam shaping system comprises a cylindrical lens and a modified Bao Weier prism, and modified Bao Weier prism is arranged on cylindrical lens the place ahead.
The laser power of the laser of described LASER Light Source institute radiation is 100 milliwatts ~ 50 watt.
The core diameter of described optical fiber is 100 ~ 400 microns.
The cylindrical lens focal distance f of described cylindrical lens=30 ~ 80mm, the ridge face angle of described modified Bao Weier prism is 10 ~ 80 °.
Light beam focusing system combined focal length f '=80mm ~ 150mm.
The ridge of described modified Bao Weier prism is shaped as non-spherical structure.
The utility model is in conjunction with the characteristics of cylinder lens combination and these two kinds of systems of Bao Weier prism system, the weak characteristics of linear beam intermediate energy distribution that form with the Bao Weier prism compensate the high shortcoming of intermediate energy distribution that the cylindrical lens system brings, and obtain the extraordinary linear beam of uniform distribution.
Advantage and effect:
The utility model is a kind of linear beam shaping optical system, compared with prior art has following advantage:
Utilize a focusing system and cylindrical lens+follow-on Bao Weir prism to form a linear beam shaping system, this system can avoid common cylindrical lens imaging and the unevenness of the energy distribution of common Bao Weir linear beam that prism becomes.
For road detection, orbit measurements etc. have the occasion of higher requirement for illuminating bundle, such as the energy distributing homogeneity, consistency of line width, long line length, narrow live width etc., the present situation beam shaping system of employing institute utility model, can be road detection, orbit measurement etc. provide the linear light sorurce of high-quality.
Description of drawings:
Fig. 1 is the utility model structural representation;
Fig. 2 is the schematic diagram that concerns of the various parameters that determine linear beam length.
Description of reference numerals:
1, LASER Light Source, 2, laser, 3, fiber coupling system, 4, optical fiber, 5, laser beam, 6, light beam focusing system, 7, lens combination, 8, the linear beam shaping system, 9, cylindrical lens, 10, modified Bao Weier prism, 11, converging beam, 12, whisk broom shape light beam, 13, linear beam, L is the length of linear beam 13, l arrives the distance of optical system modified Bao Weier prism 10 for the linear beam 13 that produces, n is the refractive index of the optical material of modified Bao Weier prism 10, and α is the ridge face angle of modified Bao Weier prism 10, d be converging beam 11 at the beam diameter at cylindrical lens 9 places, f is the focal length of cylindrical lens 9.
Embodiment:
Technical solutions of the utility model are described in detail as follows below in conjunction with accompanying drawing:
When laser beam was through cylindrical lens or Bao Weier prism at present, the energy distribution of the linear beam of its formation had middle and marginal existence uneven distribution.For this problem, the utility model has adopted cylindrical lens+follow-on Bao Weir prism structure, namely utilize cylindrical lens to control incident area and the energy distribution of the light beam that incides the Bao Weier prism, utilize the ridge angle of Bao Weier prism to control linearity emission angle, utilize the ridge of designed Bao Weier prism to be shaped as the distribution that non-spherical structure is controlled the output energy, thereby realize the homogeneous energy distribution of linear beam.
The utility model relates to a kind of linear beam shaping optical system, comprises LASER Light Source, fiber coupling system, Transmission Fibers, spherical lens group, cylindrical lens+modified Bao Weier prism group.Laser by the LASER Light Source emission, be coupled into optical fiber through fiber coupling system, again after Optical Fiber Transmission, incide the spherical lens group, light beam from the outgoing of spherical lens group, through cylindrical lens+modified Bao Weier prism group, spatially form a whisk broom shape light beam, this whisk broom type light beam focuses in the vertical gradually, then is in the horizontal fan-shaped emission, focuses in the vertical and points out, the final energy even that forms distributes, have certain subtended angle, length and width meet road detection, and the linear beam that needs is used in track detection etc.
As shown in fig. 1, this linear beam shaping optical system of the utility model, the LASER Light Source 1 that comprises radiation laser 2, LASER Light Source 1 the place ahead is provided with fiber coupling system 3, fiber coupling system 3 the place aheads are provided with optical fiber 4, laser 2 is coupled in the optical fiber 4 through fiber coupling system 3, optical fiber 4 the place aheads are provided with light beam focusing system 6, light beam focusing system 6 comprises lens combination 7 and is arranged on the linear beam shaping system 8 in lens combination 7 the place aheads, linear beam shaping system 8 comprises a cylindrical lens 9 and a modified Bao Weier prism 10, and modified Bao Weier prism 10 is arranged on cylindrical lens 9 the place aheads.
The laser power of the laser 2 of 1 radiation of described LASER Light Source is 100 milliwatts ~ 50 watt, the wavelength of laser 2 can cover all visible lights in infrared any optical maser wavelength, for example can be 808nm, 980nm or 1064nm.
The core diameter of described optical fiber 4 is 100 ~ 400 microns.
The cylindrical lens focal distance f of described cylindrical lens 9=30 ~ 80mm, the ridge face angle of described modified Bao Weier prism 10 is 10 ~ 80 °.Determining according to determining in the length of the linear beam of the required generation of certain distance of the ridge face angle of the focal length of cylindrical lens 9 and Bao Weier prism 10.The length of the linear beam that produces changes, and these two groups of data also need respective change.Their pass is:
Wherein, L is the length of linear beam 13, l arrives the distance of optical system Bao Weier prism 10 for the linear beam 13 that produces, n is the refractive index of the optical material of Bao Weier prism 10, α is the ridge face angle of Bao Weier prism 10, d be converging beam 11 at the beam diameter at cylindrical lens 9 places, f is the focal length of cylindrical lens 9.As shown in Figure 2, Fig. 2 is the schematic diagram that concerns of the various parameters that determine linear beam length.
Light beam focusing system 6 combined focal length f '=80mm ~ 150mm.
The ridge of described modified Bao Weier prism is shaped as custom-designed non-spherical structure, to obtain the linear beam of output energy distributions good uniformity.
Principle of work of the present utility model is as follows:
The utility model is a kind of linear beam shaping optical system, as shown in fig. 1, comprise a LASER Light Source 1, this LASER Light Source 1 radiation laser 2, laser 2 power are 100 milliwatts ~ 50 watt, laser 2 wavelength are 808nm, 980nm or 1064nm, laser 2 is coupled in the optical fiber 4 through fiber coupling system 3, the core diameter of optical fiber 4 is 100 ~ 400 microns, after laser 2 transmits through optical fiber 4, formation has the laser beam 5 of flat-top energy distribution, laser beam 5 incides light beam focusing system 6, light beam focusing system 6 comprises lens combination 7 and linear beam shaping system 8, and linear beam shaping system 8 comprises that cylindrical lens 9(cylindrical lens focal distance f=30 ~ 80mm) and a modified Bao Weier prism 10(ridge face angle are 10 ~ 80 °).Laser beam 5 forms a converging beam 11 through after the lens combination 7, and this converging beam 11 forms a whisk broom shape light beam 12 through linear beam shaping system 8, and light beam becomes fan-shaped distribution in the horizontal, in the vertical, becomes focus form; At longitudinal focusing point place, form the linear beam 13 that an energy even distributes at last.
The utility model is novel, and is reasonable in design, can effectively overcome the inhomogeneous defective of energy of the linear beam that common cylindrical lens imaging and common Bao Weir prism imaging bring.Be track traffic, Road Detection provides needed linear beam: long linear beam length, narrow linear beam width, the homogeneity energy distribution of linear beam.The utility model can be widely used in Road Detection, and the needed linear beam of track traffic system also can be applicable to other application scenarios such as architectural mapping.
Claims (6)
1. linear beam shaping optical system, it is characterized in that: the LASER Light Source (1) that comprises radiation laser (2), LASER Light Source (1) the place ahead is provided with fiber coupling system (3), fiber coupling system (3) the place ahead is provided with optical fiber (4), laser (2) is coupled in the optical fiber (4) through fiber coupling system (3), optical fiber (4) the place ahead is provided with light beam focusing system (6), light beam focusing system (6) comprises lens combination (7) and is arranged on the linear beam shaping system (8) in lens combination (7) the place ahead, linear beam shaping system (8) comprises a cylindrical lens (9) and a modified Bao Weier prism (10), and modified Bao Weier prism (10) is arranged on cylindrical lens (9) the place ahead.
2. a kind of linear beam shaping optical system according to claim 1 is characterized in that: the laser power of the laser (2) of described LASER Light Source (1) institute radiation is 100 milliwatts ~ 50 watt.
3. a kind of linear beam shaping optical system according to claim 1, it is characterized in that: the core diameter of described optical fiber (4) is 100 ~ 400 microns.
4. a kind of linear beam shaping optical system according to claim 1, it is characterized in that: the cylindrical lens focal distance f of described cylindrical lens (9)=30 ~ 80mm, the ridge face angle of described modified Bao Weier prism (10) is 10 ~ 80 °.
5. a kind of linear beam shaping optical system according to claim 1 is characterized in that: light beam focusing system (6) combined focal length f '=80mm ~ 150mm.
6. according to claim 1 or 4 described a kind of linear beam shaping optical systems, it is characterized in that: the ridge of described modified Bao Weier prism is shaped as non-spherical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220631115.7U CN202904126U (en) | 2012-11-26 | 2012-11-26 | Linear light beam shaping optics system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201220631115.7U CN202904126U (en) | 2012-11-26 | 2012-11-26 | Linear light beam shaping optics system |
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| CN202904126U true CN202904126U (en) | 2013-04-24 |
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| CN201220631115.7U Expired - Fee Related CN202904126U (en) | 2012-11-26 | 2012-11-26 | Linear light beam shaping optics system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981276A (en) * | 2012-11-26 | 2013-03-20 | 沈阳工业大学 | Linear light beam shaping optical system |
| CN103336365A (en) * | 2013-08-08 | 2013-10-02 | 西安电子科技大学 | Test launch optical system of noncircular symmetrical target laser radar scattering cross section |
| CN103345013A (en) * | 2013-07-16 | 2013-10-09 | 西安电子科技大学 | Special-shaped prism and semiconductor laser array flat-topped beam shaper |
| CN105024267A (en) * | 2015-08-01 | 2015-11-04 | 西南技术物理研究所 | Linear laser generation system |
| CN107907962A (en) * | 2017-11-02 | 2018-04-13 | 西南技术物理研究所 | A kind of uniformly linear collimated laser beam generation device |
| CN109960043A (en) * | 2019-04-30 | 2019-07-02 | 杭州晟创激光科技有限公司 | A kind of linear laser lighting source |
| CN110244277A (en) * | 2018-03-07 | 2019-09-17 | 罗伯特·博世有限公司 | Transmission unit and laser radar apparatus for scanning scanning area |
-
2012
- 2012-11-26 CN CN201220631115.7U patent/CN202904126U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981276A (en) * | 2012-11-26 | 2013-03-20 | 沈阳工业大学 | Linear light beam shaping optical system |
| CN103345013A (en) * | 2013-07-16 | 2013-10-09 | 西安电子科技大学 | Special-shaped prism and semiconductor laser array flat-topped beam shaper |
| CN103345013B (en) * | 2013-07-16 | 2015-08-05 | 西安电子科技大学 | A kind of special-shaped glass prism and semiconductor laser array flat top beam reshaper |
| CN103336365A (en) * | 2013-08-08 | 2013-10-02 | 西安电子科技大学 | Test launch optical system of noncircular symmetrical target laser radar scattering cross section |
| CN105024267A (en) * | 2015-08-01 | 2015-11-04 | 西南技术物理研究所 | Linear laser generation system |
| CN107907962A (en) * | 2017-11-02 | 2018-04-13 | 西南技术物理研究所 | A kind of uniformly linear collimated laser beam generation device |
| CN110244277A (en) * | 2018-03-07 | 2019-09-17 | 罗伯特·博世有限公司 | Transmission unit and laser radar apparatus for scanning scanning area |
| US11442147B2 (en) * | 2018-03-07 | 2022-09-13 | Robert Bosch Gmbh | Transmitter unit and lidar device for scanning a scanning region |
| CN109960043A (en) * | 2019-04-30 | 2019-07-02 | 杭州晟创激光科技有限公司 | A kind of linear laser lighting source |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20151126 |