CN203480128U - Optical system for self-reconstruction of periodical Bottle beam - Google Patents
Optical system for self-reconstruction of periodical Bottle beam Download PDFInfo
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- CN203480128U CN203480128U CN201320254119.2U CN201320254119U CN203480128U CN 203480128 U CN203480128 U CN 203480128U CN 201320254119 U CN201320254119 U CN 201320254119U CN 203480128 U CN203480128 U CN 203480128U
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- axle pyramid
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Abstract
The utility model discloses an optical system for the self-reconstruction of periodical Bottle beam. The optical system includes an optical platform on which a laser device is arranged. An adjustable attenuator, a short focal length lens, a long focal length lens, a diaphragm, a first axicon, a second axicon and an opaque obstacle, the center of which are on the axis of laser light, are orderly arranged along the laser path. The distance between the short focal length lens and the long focal length lens is equal to the sum of the focal lengths of the two lenses, the first axicon closely leans on the diaphragm; the base angle gamma 1 of the first axicon is smaller than the base angle gamma 2 of the second axicon; the second axicon is arranged at 1/2 maximum diffraction free distance of the first axicon; the distance between the opaque obstacle and the second axicon is less than 10cm. The optical system of the utility model provides a new way for researching the self-reconstruction of periodical Bottle beam, thereby providing more help for the application of periodical Bottle beam in the manipulation of particles or even the multi-plane manipulation of particles.
Description
Technical field
The utility model relates to a kind of Conical Lenses that utilizes to carrying out line focus without diffraction Bezier (Bessel) light beam, produces cycle bottle beams (Bottle beam) and occurs from the technical research of rebuilding by barrier.
Background technology
Since J.Durnin in 1987 has proposed diffrac tion-free Bessel beam first, because its distinctive character is widely used in the optical guidance of particle confinement, particle, fields such as the imaging of biological cell and information extraction, optical imagery, optics pulling force.
Diffrac tion-free Bessel beam can produce Bottle beam after shaping, and it is a branch of dummy section in the dark that has light intensity minimum (be even zero) on the direction of propagation, outside this region round a kind of special hollow beam of high-strength light.Because Bottle beam has the dummy section in the dark of three-dimensional sealing and high intensity gradient, can catch and then control fine particle, the omnidirectional three-dimensional operation of realization to particulate, can be used as the instruments such as laser catheter and optics spanner, especially as light tweezer, handle particulate and there is the advantages such as noncontact, low damage.It has played the effect of can not ignore as laser catheter and optics spanner etc. in life science and nanosecond science and technology.
Diffrac tion-free Bessel beam is except without diffraction characteristic, and its another key property is exactly to run into the reconstruction certainly that can realize light beam after barrier, and cycle Bottle beam also has from the characteristic of rebuilding.
This specific character based on cycle Bottle beam, the utility model people has proposed a kind ofly with axle pyramid, diffrac tion-free Bessel beam to be carried out to line focus and produce the optical system that cycle Bottle beam rebuilds by barrier, for cycle Bottle beam is studied from the characteristic of rebuilding.
Utility model content
The purpose of this utility model is to provide a kind of cycle Bottle beam from the optical system of rebuilding, and for the characteristic that cycle Bottle beam is rebuild certainly, studies, and for research cycle, Bottle beam is provided by a kind of succinct, effective approach that provides certainly.
To achieve these goals, the utility model adopts following technical scheme:
Cycle Bottle beam is from the optical system of rebuilding, comprise optical table, on this optical table, be placed with laser instrument, along the laser optical path of this laser instrument, place successively adjustable attenuator, short focal length lens, long-focus lens, diaphragm, the first axle pyramid, the second axle pyramid and light tight barrier; Wherein, the center of laser instrument, adjustable attenuator, short focal length lens, long-focus lens, diaphragm, the first axle pyramid, the second axle pyramid and light tight barrier is all on optical axis; Distance between above-mentioned short focal length lens and long-focus lens is the focal length sum of two lens; Above-mentioned the first axle pyramid nestles up above-mentioned diaphragm; The base angle γ of above-mentioned the first axle pyramid
1be less than the base angle γ of above-mentioned the second axle pyramid
2; Above-mentioned the second axle pyramid is in the 1/2 maximum the non diffracting distance place that above-mentioned the first axle pyramid produces; Distance between above-mentioned light tight barrier and above-mentioned the second axle pyramid is less than 10cm.
Above-mentioned laser instrument is He-Ne laser instrument.
Above-mentioned adjustable attenuator is comprised of two polaroids, and the angle being formed by the polarization direction of this two polaroid is adjustable.
Above-mentioned diaphragm is the adjustable circular iris of radius, for changing the beam radius that incides above-mentioned the first axle pyramid.
Adopt after such scheme, the laser beam sending when laser instrument is successively through the decay of adjustable attenuator, after short focal length lens and long-focus lens collimator and extender, via diaphragm, normal incidence is to the first axle pyramid again, and after the first axle pyramid, in certain distance, form approximate without diffraction region, at this, by the second axle pyramid, the Beams producing is focused in without diffraction region and form cycle Bottle beam, within the scope of cycle Bottle beam, put into light tight barrier, therefore cycle Bottle beam can not stop, but walk around light tight barrier, continue to propagate forward.The district that will cast a shadow after light tight barrier, then returns to the light distribution of cycle Bottle beam gradually.
Optical system of the present utility model for research cycle Bottle beam from rebuilding, provide a kind of succinct, effective method.Cycle Bottle beam is controlled and the application of the aspect such as optics microoperation provides strong condition at stage construction particle.
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;
Embodiment
In order further to explain, below in conjunction with accompanying drawing, the structure of the utility model system and principle are described in detail the technical scheme of the utility model system.
A kind of cycle Bottle beam of the present utility model is from the optical system of rebuilding, for cycle Bottle beam is studied from the characteristic of rebuilding, as shown in Figure 1, comprise optical table 1 and use respectively He-Ne laser instrument 3, adjustable attenuator 4, short focal length lens 5, long-focus lens 6, diaphragm 7, the first axle pyramid 8, the second axle pyramid 9 and the light tight barrier 10 of fixed support 2 supporting and locations.Particularly, on optical table 1, place He-Ne laser instrument 3, on optical table 1, along the laser optical path of this He-Ne laser instrument 3, place successively described adjustable attenuator 4, short focal length lens 5, long-focus lens 6, diaphragm 7, the first axle pyramid 8, the second axle pyramid 9 and light tight barrier 10, and He-Ne laser instrument 3, adjustable attenuator 4, short focal length lens 5, long-focus lens 6, diaphragm 7, the first axle pyramid 8, the second axle pyramid 9 and light tight barrier 10 center are all on optical axis.
Wherein, adjustable attenuator 4 is comprised of the polaroid of two diameter 62mm, and the angle between two polaroid directions can be changed by rotatory polarization sheet, for the light beam that He-Ne laser instrument 3 is sent, decays and facilitates eye-observation.
Wherein, short focal length lens 5 and long-focus lens 6 form telescopic system, and for the laser of He-Ne laser instrument 3 outputs is collimated and expanded, the distance between short focal length lens 5 and long-focus lens 6 is the focal length sum of these two lens;
Wherein, the first axle pyramid 8 nestles up diaphragm 7; The base angle γ of the first axle pyramid 8
1be less than the base angle γ of the second axle pyramid 9
2; The second axle pyramid 9 is in the 1/2 maximum the non diffracting distance place that the first axle pyramid 8 produces; After light tight barrier 10 is in the second axle pyramid 9, and and the second axle pyramid 9 between distance be less than 10cm, the optional 5cm that selects of this spacing.
Wherein, diaphragm 7 is the adjustable circular iris of radius, for changing the beam radius that incides the first axle pyramid 8; In the utility model, light tight barrier 10 can adopt film.
As shown in Figure 2, first He-Ne laser instrument 3 is opened, laser beam is after adjustable attenuator 4 decay, short focal length lens 5 and long-focus lens 6 collimate and expand, the diaphragm 7 that is R through aperture, normal incidence the first axle pyramid 8 forms approximate without diffraction region in the rear certain distance of the first axle pyramid 8 again.This without diffraction region in, its maximum the non diffracting distance can be by formula Z
max≈ R/[(n-1) γ
1] calculate, wherein R is the radius of diaphragm 7, n is the refractive index of the first axle pyramid 8 and the second axle pyramid 9, γ
1it is the base angle of the first axle pyramid 8.1/2 maximum producing at the first axle pyramid 8, without diffraction place, is γ with base angle
29 pairs of diffraction light-frees of the second axle pyramid carry out line focus.After the second axle pyramid 9, will produce periodically Bottle beam, and after the second axle pyramid 9, and be less than 10cm place apart with the second axle pyramid and put into light tight barrier 10.Z
0be the distance between the first axle pyramid 8 and the second axle pyramid 9, Z
0≈ 1/2Z
max, after light tight barrier 10, can observe Bottle beam from the overall process of rebuilding.Minimum is Z from rebuilding distance
min=min (a/[(n-1) (γ
1+ γ
2)], a/[(n-1) (γ
2-γ
1)]), wherein a is the radius of light tight barrier 10, γ
2it is the base angle of the second axle pyramid 9.
Thus, this optical system for research cycle Bottle beam from rebuilding, provide a kind of succinct, effective method.In actual applications, particularly for stage construction particle, controlling the microoperation with optics acquires a special sense.
The product form of above-described embodiment and graphic and non-limiting the utility model system and style, suitable variation or modification that any person of an ordinary skill in the technical field does it, all should be considered as not departing from the patent category of the utility model system.
Claims (4)
1. a cycle Bottle beam is from the optical system of rebuilding, it is characterized in that: comprise optical table, on this optical table, be placed with laser instrument, along the laser optical path of this laser instrument, place successively adjustable attenuator, short focal length lens, long-focus lens, diaphragm, the first axle pyramid, the second axle pyramid and light tight barrier; Wherein, the center of laser instrument, adjustable attenuator, short focal length lens, long-focus lens, diaphragm, the first axle pyramid, the second axle pyramid and light tight barrier is all on optical axis; Distance between above-mentioned short focal length lens and long-focus lens is the focal length sum of two lens; Above-mentioned the first axle pyramid nestles up above-mentioned diaphragm; The base angle γ of above-mentioned the first axle pyramid
1be less than the base angle γ of above-mentioned the second axle pyramid
2; Above-mentioned the second axle pyramid is in the 1/2 maximum the non diffracting distance place that above-mentioned the first axle pyramid produces; Distance between above-mentioned light tight barrier and above-mentioned the second axle pyramid is less than 10cm.
2. a kind of cycle Bottle beam as claimed in claim 1, from the optical system of rebuilding, is characterized in that: above-mentioned laser instrument is He-Ne laser instrument.
3. a kind of cycle Bottle beam as claimed in claim 1, from the optical system of rebuilding, is characterized in that: above-mentioned adjustable attenuator is comprised of the polaroid of two diameter 62mm, and the angle between two polaroid directions can be changed by rotatory polarization sheet.
4. a kind of cycle Bottle beam as claimed in claim 1, from the optical system of rebuilding, is characterized in that: above-mentioned diaphragm is the adjustable circular iris of radius, for changing the beam radius that incides above-mentioned the first axle pyramid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320254119.2U CN203480128U (en) | 2013-05-10 | 2013-05-10 | Optical system for self-reconstruction of periodical Bottle beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320254119.2U CN203480128U (en) | 2013-05-10 | 2013-05-10 | Optical system for self-reconstruction of periodical Bottle beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203480128U true CN203480128U (en) | 2014-03-12 |
Family
ID=50228431
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320254119.2U Withdrawn - After Issue CN203480128U (en) | 2013-05-10 | 2013-05-10 | Optical system for self-reconstruction of periodical Bottle beam |
Country Status (1)
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|---|---|
| CN (1) | CN203480128U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424871A (en) * | 2013-05-10 | 2013-12-04 | 华侨大学 | Optical system of cycle bottle beam self-reconstruction |
| 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 |
| CN110471187A (en) * | 2019-08-20 | 2019-11-19 | 济南大学 | Generate the apparatus and method of the cubical array ampuliform light beam in Hexagonal Close-packed distribution |
-
2013
- 2013-05-10 CN CN201320254119.2U patent/CN203480128U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424871A (en) * | 2013-05-10 | 2013-12-04 | 华侨大学 | Optical system of cycle bottle beam self-reconstruction |
| CN103424871B (en) * | 2013-05-10 | 2016-02-24 | 华侨大学 | The optical system of cycle bottle beam self-reconstruction |
| 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 |
| 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 |
| CN110471187A (en) * | 2019-08-20 | 2019-11-19 | 济南大学 | Generate the apparatus and method of the cubical array ampuliform light beam in Hexagonal Close-packed distribution |
| CN110471187B (en) * | 2019-08-20 | 2021-07-30 | 济南大学 | Device and method for generating three-dimensional array bottle-shaped light beams in hexagonal close-packed distribution |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20160224 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20160224 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |