CN201278056Y - Light beam shaping apparatus - Google Patents
Light beam shaping apparatus Download PDFInfo
- Publication number
- CN201278056Y CN201278056Y CNU200820167027XU CN200820167027U CN201278056Y CN 201278056 Y CN201278056 Y CN 201278056Y CN U200820167027X U CNU200820167027X U CN U200820167027XU CN 200820167027 U CN200820167027 U CN 200820167027U CN 201278056 Y CN201278056 Y CN 201278056Y
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- Prior art keywords
- conical surface
- light beam
- catoptron
- reflection
- circular conical
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Abstract
The utility model relates to a light beam shaping device, which aims to solve the problem in the prior art that the requirements on an incident light beam are high and the conversion from a non-rotating vector polarized light beam to a rotating vector polarized light beam and the dimension adjustment of the light beam can not be achieved. The incident light beam passes through an outer reflection type conical surface reflecting mirror, a cylindrical curved surface polarizer and an inner reflection type conical surface reflecting mirror, two one second wave plates placed in parallel and a beam expanding lenses in sequence; a light source emergent light beam is formed into a radial propagation light beam after being reflected by the outer reflection type conical surface reflecting mirror; the radial propagation light beam after passing through the cylindrical curved surface polarizer is reflected by the inner reflection type conical surface reflecting mirror to from a circular ring-shaped rotating vector polarized light beam; a light axial angle formed by the two one second wave plates is adjusted through rotating a rotating movable part to change the polarization state; and the lateral dimension of the light beam is changed through the beam expanding lens. The utility model has the advantages of low requirements on the incident beam, convenient adjustment of the output of a circular ring-shaped light beam and the polarization state and the lateral dimension of the light beam and the like.
Description
Technical field
The utility model belongs to optical technical field, relates to a kind of light-beam forming unit, particularly a kind of vector ring-shaped light beam reshaping apparatus.
Technical background
Vector beam is owing to have special light beam focussing property and propagation characteristic may be used on optical information storage, optical microphotograph, lithography, optical systems such as Laser Processing, the little manipulation of optics, super-resolution, light and matter interaction.For example, circulation polarized light beam can be applicable to realize the super-resolution effect in the optical microscope system, because certain circulation polarized light beam is littler than the horizontal hot spot of the focus of linearly polarized light beam focusing in the same focusing system through focusing on back focus.The generation of vector beam is research and the indispensable precondition of utilizing circulation polarized light beam, has caused extensive concern.Formerly in the technology, a kind of adjustable vector beam orthopedic systems is arranged (referring to Chinese invention patent " adjustable vector beam orthopedic systems ", the patent No.: ZL200410052913.4), this adjustable vector beam orthopedic systems has suitable advantage, but still exist some essence not enough, be mainly: 1) technology produces circulation polarized light beam if utilize formerly, required necessary conditions is that system's incident beam need be the special shape of circulation polarized light beam, such as radial polarized light beam or position angle light beam, yet, the generation of radial polarized light beam and position angle light beam also belongs to circulation polarized light beam and produces category, its essential decision can't realize that non-rotating vector light beam is converted into circulation polarized light beam, decision can't realize the conversion process of incoherent incident beam to circulation polarized light beam in essence, incident beam is required high; 2) can't realize that the outgoing beam light beam transversal relative with incident beam expands Shu Xiaoying, can't adjust irradiating light beam physical dimension, limit range of application; 3) can't realize annulus light shape vector beam, low to the high-NA zone service efficiency of focusing objective len in the Focused Optical system.
Summary of the invention
The purpose of this utility model is at the deficiencies in the prior art, a kind of vector ring-shaped light beam reshaping apparatus is provided, has and to realize that non-rotating vector light beam requires low, ring vector light beam output, light polarization scalable, outgoing beam lateral dimension to regulate characteristics such as facility to conversion, the incident beam of circulation polarized light beam.
The utility model comprises reflection type conical reflector, external reflection formula circular conical surface catoptron, cylinder barrel shaped polarizer and the beam expanding lens of coaxial setting; Reflection type circular conical surface catoptron is an annular, and its madial wall is a reflecting surface, and reflection angle is 45 degree; External reflection formula circular conical surface catoptron is conical, and its lateral wall is a reflecting surface, and reflection angle is 45 degree; The cylinder barrel shaped polarizer is arranged in the center pit of reflection type circular conical surface catoptron, and its barrel is the polarization workplace; External reflection formula circular conical surface catoptron is arranged in the cylinder barrel shaped polarizer, and its reflecting surface is corresponding with the reflection line position of reflection type circular conical surface catoptron; Parallel incident 1/2nd wave plates, outgoing 1/2nd wave plates and the beam expanding lens of being disposed with the bottom surface behind the bottom surface of external reflection formula circular conical surface catoptron, the center of incident 1/2nd wave plates or outgoing 1/2nd wave plates is provided with the rotation moving-member.
Described external reflection formula circular conical surface catoptron is the outer conical surface catoptron of outer cone curved surface plating reflectance coating, or the conical surface external reflection formula catoptron of reflectance coating formation.
Described reflection type circular conical surface catoptron is the internal conical surface catoptron of female cone curved surface plating reflectance coating, or the conical surface reflection type catoptron of reflectance coating formation.
Described cylinder barrel shaped polarizer is cylinder barrel shaped polarizing coating or cylinder curved surface shell-type polarizer.Described beam expanding lens is Galileo type beam expanding lens or Kepler's type beam expanding lens.
Described rotation moving-member is a kind of of rotary type motion stepper motor, rotary type direct current generator, transmitting gear mechanism.
Incident beam is along optical axis directive external reflection formula circular conical surface catoptron in the utility model, and after external reflection formula circular conical surface mirror reflects, because the external reflection formula circular conical surface mirror reflects conical surface and symmetrical optical axis are in angle of 45 degrees, light beam is converted into the radial propagation light beam; Light polarization changes behind the radial propagation light beam process cylinder barrel shaped polarizer, then reflect to form vector ring-shaped light beam through the reflection type conical reflector, because the reflection conical surface of external reflection formula circular conical surface catoptron is parallel with the reflection conical surface of reflection type circular conical surface catoptron, vector ring-shaped light beam is parallel with symmetrical optical axis, propagates along symmetrical optical axis and passes through the vector ring-shaped light beam that incident 1/2nd wave plates, outgoing 1/2nd wave plates and beam expanding lens form the device outgoing successively.The rotation moving-member is connected with incident 1/2nd wave plates or outgoing 1/2nd wave plates, driving one of them 1/2nd wave plate rotates, regulate the wave plate optical axis included angle of incident 1/2nd wave plates and outgoing 1/2nd wave plates, and then regulate vector ring-shaped light polarization, beam expanding lens carries out lateral dimension to vector ring-shaped light beam to be regulated.
The utility model can be realized the conversion of non-rotating vector light beam to vector ring-shaped light beam in itself, and system is unrestricted to the polarization state of incident beam, and low to the incident beam requirement, the system applies scope is wide; Can realize the output of vector ring-shaped light beam, easy-to-use, system architecture is simple, stability and reliability height; The polarization state that can regulate vector ring-shaped light beam distributes and the outgoing beam lateral dimension, and control method is simple and easy.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As Fig. 1, a kind of vector ring-shaped light beam reshaping apparatus comprises reflection type conical reflector 3, external reflection formula circular conical surface catoptron 1, cylinder barrel shaped polarizer 2 and the beam expanding lens 6 of coaxial setting.Reflection type circular conical surface catoptron 3 is an annular, and its madial wall is a reflecting surface, and reflection angle is 45 degree (angle α is 45 degree between the plane of reflecting surface and vertical axis of symmetry); External reflection formula circular conical surface catoptron 1 is conical, and its lateral wall is a reflecting surface, and reflection angle is 45 degree (angle β is 45 degree between the plane of reflecting surface and vertical axis of symmetry).Cylinder barrel shaped polarizer 2 is arranged in the center pit of reflection type circular conical surface catoptron 3, and its barrel is the polarization workplace, and external reflection formula circular conical surface catoptron 1 is arranged in the cylinder barrel shaped polarizer 2.Be arranged with incident 1/2nd wave plates 4, outgoing 1/2nd wave plates 5 and beam expanding lens 6 behind the bottom surface of external reflection formula circular conical surface catoptron 1 successively in parallel.The reflection conical surface of external reflection formula circular conical surface catoptron 1 is parallel with the reflection conical surface of reflection type circular conical surface catoptron 3, and the reflection conical surface of the reflection conical surface of external reflection formula circular conical surface catoptron 1 and reflection type circular conical surface catoptron 3 all with symmetrical optical axis O
1O
2In angle of 45 degrees.Incident beam is reflected by external reflection formula circular conical surface catoptron 1, the radial propagation light beam of formation, and the cylinder curved surface of cylinder barrel shaped polarizer 2 is vertical with the radial propagation light beam; The radial propagation light beam is reflected to form vector ring-shaped light beam through cylinder barrel shaped polarizer 2 backs by reflection type circular conical surface catoptron 3, incident 1/2nd wave plates 4 and outgoing 1/2nd wave plates 5 and symmetrical optical axis O
1O
2Vertically, and successively be positioned on the vector ring-shaped beam propagation light path; Rotation moving-member 7 is connected with outgoing 1/2nd wave plates 5, drives outgoing 1/2nd wave plates 5 and rotates, and regulates the wave plate optical axis included angle of incident 1/2nd wave plates 4 and outgoing 1/2nd wave plates 5.
The conical surface external reflection formula catoptron that external reflection formula circular conical surface catoptron 1 constitutes for reflectance coating, the conical surface reflection type catoptron that reflection type circular conical surface catoptron 3 constitutes for reflectance coating, cylinder barrel shaped polarizer 2 is the cylinder barrel shaped polarizing coating, rotation moving-member 7 is a rotary type motion stepper motor, and beam expanding lens 6 is a Galileo type beam expanding lens.
Its course of work is: incident beam is along symmetrical optical axis O
1O
2Directive external reflection formula circular conical surface catoptron 1; After 1 reflection of external reflection formula circular conical surface catoptron, because the external reflection formula circular conical surface catoptron 1 reflection conical surface and symmetrical optical axis O
1O
2In angle of 45 degrees, light beam is converted into the radial propagation light beam; The radial propagation light beam changes through cylinder barrel shaped polarizer 2 back light polarizations, then reflect to form vector ring-shaped light beam through reflection type conical reflector 3, because the reflection conical surface of external reflection formula circular conical surface catoptron 1 is parallel with the reflection conical surface of reflection type circular conical surface catoptron 3, vector ring-shaped light beam and symmetrical optical axis O
1O
2Parallel, along symmetrical optical axis O
1O
2Propagate and pass through the vector ring-shaped light beam that incident 1/2nd wave plates 4, outgoing 1/2nd wave plates 5 and beam expanding lens 6 form the device outgoing successively; Rotation moving-member 7 is connected with outgoing 1/2nd wave plates 5, driving outgoing 1/2nd wave plates 5 rotates, regulate the wave plate optical axis included angle of incident 1/2nd wave plates 4 and outgoing 1/2nd wave plates 5, and then regulate vector ring-shaped light polarization, 6 pairs of vector ring-shaped light beams of beam expanding lens carry out lateral dimension to be regulated.
Claims (6)
1, a kind of light-beam forming unit, the reflection type conical reflector, external reflection formula circular conical surface catoptron, cylinder barrel shaped polarizer and the beam expanding lens that comprise coaxial setting, it is characterized in that reflection type circular conical surface catoptron is an annular, its madial wall is a reflecting surface, and reflection angle is 45 degree; External reflection formula circular conical surface catoptron is conical, and its lateral wall is a reflecting surface, and reflection angle is 45 degree; The cylinder barrel shaped polarizer is arranged in the center pit of reflection type circular conical surface catoptron, and its barrel is the polarization workplace; External reflection formula circular conical surface catoptron is arranged in the cylinder barrel shaped polarizer, and its reflecting surface is corresponding with the reflection line position of reflection type circular conical surface catoptron; Parallel incident 1/2nd wave plates, outgoing 1/2nd wave plates and the beam expanding lens of being disposed with the bottom surface behind the bottom surface of external reflection formula circular conical surface catoptron, the center of incident 1/2nd wave plates or outgoing 1/2nd wave plates is provided with the rotation moving-member.
2, a kind of light-beam forming unit as claimed in claim 1 is characterized in that: described external reflection formula circular conical surface catoptron is the outer conical surface catoptron of outer cone curved surface plating reflectance coating, or the conical surface external reflection formula catoptron of reflectance coating formation.
3, a kind of light-beam forming unit as claimed in claim 1 is characterized in that: described reflection type circular conical surface catoptron is the internal conical surface catoptron of female cone curved surface plating reflectance coating, or the conical surface reflection type catoptron of reflectance coating formation.
4, a kind of light-beam forming unit as claimed in claim 1 is characterized in that: described cylinder barrel shaped polarizer is cylinder barrel shaped polarizing coating or cylinder curved surface shell-type polarizer.
5, a kind of light-beam forming unit as claimed in claim 1 is characterized in that: described beam expanding lens is Galileo type beam expanding lens or Kepler's type beam expanding lens.
6, a kind of light-beam forming unit as claimed in claim 1 is characterized in that: described rotation moving-member is a kind of of rotary type motion stepper motor, rotary type direct current generator, transmitting gear mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820167027XU CN201278056Y (en) | 2008-10-28 | 2008-10-28 | Light beam shaping apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820167027XU CN201278056Y (en) | 2008-10-28 | 2008-10-28 | Light beam shaping apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201278056Y true CN201278056Y (en) | 2009-07-22 |
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ID=40895641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820167027XU Expired - Lifetime CN201278056Y (en) | 2008-10-28 | 2008-10-28 | Light beam shaping apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201278056Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107953040A (en) * | 2017-12-28 | 2018-04-24 | 中国科学院宁波材料技术与工程研究所 | A kind of high-precision laser machining device and system |
| CN107991785A (en) * | 2017-12-26 | 2018-05-04 | 福州大学 | A kind of knockdown double wave plates band light polarization state |
| CN110220504A (en) * | 2019-07-09 | 2019-09-10 | 青岛镭创光电技术有限公司 | Reflecting element and straight line laser mould group |
-
2008
- 2008-10-28 CN CNU200820167027XU patent/CN201278056Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991785A (en) * | 2017-12-26 | 2018-05-04 | 福州大学 | A kind of knockdown double wave plates band light polarization state |
| CN107953040A (en) * | 2017-12-28 | 2018-04-24 | 中国科学院宁波材料技术与工程研究所 | A kind of high-precision laser machining device and system |
| CN107953040B (en) * | 2017-12-28 | 2020-03-31 | 中国科学院宁波材料技术与工程研究所 | High-precision laser processing device and system |
| CN110220504A (en) * | 2019-07-09 | 2019-09-10 | 青岛镭创光电技术有限公司 | Reflecting element and straight line laser mould group |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090722 Effective date of abandoning: 20081028 |