CN204116721U - A kind of optical system producing banded Beams - Google Patents
A kind of optical system producing banded Beams Download PDFInfo
- Publication number
- CN204116721U CN204116721U CN201420522858.XU CN201420522858U CN204116721U CN 204116721 U CN204116721 U CN 204116721U CN 201420522858 U CN201420522858 U CN 201420522858U CN 204116721 U CN204116721 U CN 204116721U
- Authority
- CN
- China
- Prior art keywords
- elliptical aperture
- focus
- long
- aperture film
- optical
- 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.)
- Expired - Fee Related
Links
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model discloses a kind of optical system producing banded Beams, it comprises optical table, this optical table is placed with laser instrument, and the laser optical path along this laser instrument places short focal length lens, long-focus lens, elliptical aperture film and axle pyramid successively; The focus of short focal length lens and the focus of long-focus lens overlap; Elliptical aperture film nestles up axle pyramid; The minor axis diameter of the elliptical aperture of elliptical aperture film is greater than from the diameter of the light beam of long-focus lens directive elliptical aperture film.Banded Beams can being produced quickly and easily by optical system of the present utility model, providing a kind of low cost, succinct, effective new way for obtaining banded Beams.In actual applications, particularly to raising optical non-destructive detection, the detection efficiency on bar code scan acquires a special sense.
Description
Technical field
The utility model relates to a kind of optical system carrying out focusing on the banded Beams of generation to circle Gaussian beam.
Background technology
Beams be a kind of in free-space propagation process lateral light field distribution do not change with propagation distance and Light Energy concentrate light beam.Because of its characteristic that intensity and spot size remain unchanged in communication process, be widely used in laser boring, optical trap and operation, laser imaging, interferometry, space optical communication.Produce the fairly simple method of Beams in experiment and obtain Beams with the direct incident axle pyramid of plane wave exactly, equally distributed plane wave when inciding the plane wave amplitude on axle pyramid, generation is exactly diffrac tion-free Bessel beam, when the distribution of amplitudes inciding the plane on axle pyramid is plane wave heterogeneous, dissimilar Beams can be obtained, the incident axle pyramid of such as Laguerre Gaussian beam produces high-order Bessel-Gauss light beam, and the plane wave incidence axle pyramid of oval G amplitude modulation obtains salt free ligands Mathieu light beam etc.
In prior art, produce the banded Beams with Mathieu beam characteristics, normally adopt traditional computer or making phase hologram sheet to obtain, it operates more complicated and cost is higher.
Utility model content
The purpose of this utility model is the optical system providing the banded Beams of a kind of convenient and swift generation.
To achieve these goals, the utility model adopts following technical scheme:
Produce an optical system for banded Beams, comprise optical table, this optical table is placed with laser instrument, the laser optical path along this laser instrument places short focal length lens, long-focus lens, elliptical aperture film, axle pyramid successively; Wherein, the focus of above-mentioned short focal length lens and the focus of above-mentioned long-focus lens overlap; Above-mentioned elliptical aperture film nestles up above-mentioned axle pyramid; The minor axis diameter of the elliptical aperture of above-mentioned elliptical aperture film is greater than from the diameter of the light beam of above-mentioned long-focus lens directive above-mentioned elliptical aperture film.
Above-mentioned laser instrument is He-Ne laser instrument.
Adopt after such scheme, the laser beam sent when laser instrument is successively after short focal length lens and long-focus lens collimator and extender, and via elliptical aperture film, then normal incidence is on axle pyramid, exports and forms banded Beams; This optical system structure is very simple, the advantages such as it is high that axle pyramid has optical damage threshold, and clear aperature is large, and elliptical aperture film is cheap, very easily obtains, and therefore will produce banded Beams quickly and easily.Therefore the utility model provides a kind of low cost, succinct, effective new way for obtaining banded Beams.In actual applications, particularly to raising optical non-destructive detection, the detection efficiency on bar code scan acquires a special sense.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model optical system;
Fig. 2 is the light path schematic diagram of the utility model optical system;
Fig. 3 is the structural representation of elliptical aperture film in the utility model;
Fig. 4 a-Fig. 4 d is the computer simulation hot spot figure of the utility model optical system;
Fig. 5 a-Fig. 5 d is the experiment hot spot figure of the utility model optical system.
Embodiment
In order to explain the technical scheme of the utility model system further, below by specific embodiment, the utility model system is described in detail.
A kind of optical system producing banded Beams of the present utility model, as shown in Figure 1, have optical table 1, optical table 1 is placed laser instrument 2, the laser optical path along this laser instrument 2 places short focal length lens 3, long-focus lens 4, elliptical aperture film 5 and axle pyramid 6 successively.Wherein, laser instrument 2, short focal length lens 3, long-focus lens 4, elliptical aperture film 5 and axle pyramid 6 respectively by fixed support 7 supporting and location on optical table 1.
Wherein, the focus of short focal length lens 3 and the focus of long-focus lens 4 overlap; Elliptical aperture film 5 nestles up axle pyramid 6.
Wherein, laser instrument 2 adopts He-Ne laser instrument.
The focus of short focal length lens 3 and the focus of long-focus lens 4 overlap, and form a collimating and beam expanding system by short focal length lens 3 and long-focus lens 4, the enlargement factor of collimating and beam expanding system can as required by choosing the different focal lengths of lens to regulate.The enlargement factor of adjustment collimating and beam expanding system, makes the minor axis diameter being greater than the elliptical aperture of elliptical aperture film 5 from the diameter of the light beam of long-focus lens 4 directive elliptical aperture film 5.In order to make the banded Beams pattern of last gained more clear, beam diameter can be adjusted to the major diameter of the elliptical aperture being greater than elliptical aperture film 5.
During work, as shown in Figure 2,3, first He-Ne laser instrument 2 is opened, laser beam forms the light beam that diameter is greater than the minor axis diameter of the elliptical aperture of elliptical aperture film 5 after short focal length lens 3 and long-focus lens 4 collimator and extender, this light beam forms oval hot spot after elliptical aperture film 5, form banded Beams in certain distance after being incident upon axle pyramid 6, its maximum salt free ligands propagation distance can by formula Z
max≈ a/ [(n-1) γ] approximate treatment obtains, wherein a be the major axis radius of the ellipse light spot incided on axle pyramid 6 (namely, the major axis radius of the elliptical aperture of elliptical aperture film 5), n is the refractive index of axle pyramid 6, and γ is the base angle of axle pyramid 6.The result at different propagation distance place is obtained as shown in Figure 4 a-shown in Figure 4 d by computer simulation.
As embodiment, γ=1, base angle of axle pyramid 6
0the refractive index n=1.458 of axle pyramid 6, the major and minor axis radius of the elliptical aperture of elliptical aperture film 5 is respectively a=5mm, b=1.5mm, focal distance f=the 15mm of short focal length lens 3, the focal distance f=190mm of long-focus lens 4, during experiment, the light path according to Fig. 2 builds light path system, photographs the result at different propagation distance place as shown in Fig. 5 a-Fig. 5 d.
Thus, this optical system provides a kind of low cost for obtaining banded Beams, succinctly, and effective method.In actual applications, particularly to raising optical non-destructive detection, the detection efficiency on bar code scan acquires a special sense.
The product form of above-described embodiment and graphic and non-limiting the utility model system and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as the patent category not departing from the utility model system.
Claims (2)
1. one kind produces the optical system of banded Beams, it is characterized in that: comprise optical table, this optical table is placed with laser instrument, and the laser optical path along this laser instrument places short focal length lens, long-focus lens, elliptical aperture film, axle pyramid successively; Wherein, the focus of above-mentioned short focal length lens and the focus of above-mentioned long-focus lens overlap; Above-mentioned elliptical aperture film nestles up above-mentioned axle pyramid; The minor axis diameter of the elliptical aperture of above-mentioned elliptical aperture film is greater than from the diameter of the light beam of above-mentioned long-focus lens directive above-mentioned elliptical aperture film.
2. a kind of optical system producing banded Beams as claimed in claim 1, is characterized in that: above-mentioned laser instrument is He-Ne laser instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420522858.XU CN204116721U (en) | 2014-09-12 | 2014-09-12 | A kind of optical system producing banded Beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420522858.XU CN204116721U (en) | 2014-09-12 | 2014-09-12 | A kind of optical system producing banded Beams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204116721U true CN204116721U (en) | 2015-01-21 |
Family
ID=52334014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420522858.XU Expired - Fee Related CN204116721U (en) | 2014-09-12 | 2014-09-12 | A kind of optical system producing banded Beams |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204116721U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104199189A (en) * | 2014-09-12 | 2014-12-10 | 华侨大学 | Optical system capable of generating banding diffraction-free light beams |
| CN105807432A (en) * | 2016-05-06 | 2016-07-27 | 华侨大学 | Optical system for generating hollow beam by focusing Bessel-Shell model light field through axicons |
| CN105807431A (en) * | 2016-05-06 | 2016-07-27 | 华侨大学 | Optical system for precisely regulating and controlling size of hollow light beam |
| CN105824120A (en) * | 2016-03-04 | 2016-08-03 | 华侨大学 | Incoherent light source and non-diffraction beam imaging system |
-
2014
- 2014-09-12 CN CN201420522858.XU patent/CN204116721U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104199189A (en) * | 2014-09-12 | 2014-12-10 | 华侨大学 | Optical system capable of generating banding diffraction-free light beams |
| CN105824120A (en) * | 2016-03-04 | 2016-08-03 | 华侨大学 | Incoherent light source and non-diffraction beam imaging system |
| CN105807432A (en) * | 2016-05-06 | 2016-07-27 | 华侨大学 | Optical system for generating hollow beam by focusing Bessel-Shell model light field through axicons |
| CN105807431A (en) * | 2016-05-06 | 2016-07-27 | 华侨大学 | Optical system for precisely regulating and controlling size of hollow light beam |
| CN105807432B (en) * | 2016-05-06 | 2019-01-04 | 华侨大学 | The optical system that Bezier-Xie Er model light field generates hollow beam is focused with axicon |
| CN105807431B (en) * | 2016-05-06 | 2019-03-26 | 华侨大学 | The optical system of accuracy controlling hollow beam size |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204116721U (en) | A kind of optical system producing banded Beams | |
| CN202041723U (en) | Optical system generating bottle beam with adjustable sizes | |
| CN104625417B (en) | The method of optimal control nickel surface pattern based on dynamic control | |
| CN103639590B (en) | A kind of thin metal blank radius of curvature method of adjustment based on hollow beam laser-impact and device | |
| CN108445641A (en) | A kind of tunable semiconductor laser optical optical tweezers system | |
| CN102411246B (en) | Device and method for shortening length of filament of femtosecond laser in air | |
| CN203124969U (en) | Laser micro machining equipment based on adaptive optics | |
| CN103217796B (en) | A kind of optical system producing periodically Bottle beam | |
| CN103645563A (en) | Laser shaping device | |
| TW200608657A (en) | Laser processing apparatus and method using polygon mirror | |
| CN105807432A (en) | Optical system for generating hollow beam by focusing Bessel-Shell model light field through axicons | |
| CN103212786A (en) | Laser processing apparatus and laser processing method | |
| CN103676159B (en) | A kind of improve the light path system that light spot shape regulates spot size automatically | |
| CN103760673A (en) | Optical system for generating approximate diffraction-free zero-order Mathieu beam | |
| CN104199189A (en) | Optical system capable of generating banding diffraction-free light beams | |
| CN111929911A (en) | Control device and method for laser beam form and quality | |
| CN104459999B (en) | Illuminating system of imaging flow cytometry | |
| CN108115274A (en) | A kind of laser-processing system and method | |
| CN102628996B (en) | Fundamental transverse mode laser beam shaping device and method | |
| CN103418911A (en) | Narrow-space laser marking method and marking machine thereof | |
| CN107643596A (en) | The diffraction axis axicon lens system and its Diode laser imaging method of a kind of binary zone plate form | |
| CN207020405U (en) | A kind of optical system for producing oval hollow focus on light beam | |
| CN203630445U (en) | Laser shaping device | |
| CN104460007B (en) | Laser tripled-frequency space intensity shaping method | |
| CN203259719U (en) | Optical system for generating periodic Bottle beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150121 Termination date: 20170912 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |