CN103091740A - Optical element capable of producing ringlike hollow beams - Google Patents
Optical element capable of producing ringlike hollow beams Download PDFInfo
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- CN103091740A CN103091740A CN2013100440543A CN201310044054A CN103091740A CN 103091740 A CN103091740 A CN 103091740A CN 2013100440543 A CN2013100440543 A CN 2013100440543A CN 201310044054 A CN201310044054 A CN 201310044054A CN 103091740 A CN103091740 A CN 103091740A
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Abstract
The invention discloses an optical element capable of producing ringlike hollow beams. A geometrical shape of the optical element is that the bottom of a circular platform is removed a cone which is concentric with the lower undersurface of the circular platform. The side of the circuit platform and the inner side which is formed by the removed cone are respectively polished, and regular reflection occurs respectively when light enters generatrices of the circular platform and the cone. The light enters from the upper surface of the optical element, due to the fact that the removed part is full of uniform air dielectric, total reflection occurs on generatrices of the cone and the circular platform by incident light, so incident beams shoot the ringlike hollow beams from the lower surface of the circular platform. Compared with the prior art, the optical element capable of producing the ringlike hollow beams has the advantages of being simple in structure, easy to process, and high in energy conversion efficiency. The optical element capable of producing the ringlike hollow beams can obtain the ringlike hollow beams with high beam quality collimation.
Description
Technical field
The present invention relates to a kind of optical element that produces the annular hollow light beam, belong to optical technical field.
Background technology
Along with the appearance of hollow beam, the generation of hollow beam and application have caused that people more and more pay close attention to.Hollow beam be a kind of on the direction of propagation central light strength or axial intensity be zero light beam, the cylindrical distribution of intensity, have the blackening size adjustable, without heating effect with propagate the characteristics such as unchangeability.It has a wide range of applications in the fields such as laser optics, optical information processing, particulate waveguide, isotopic separation, microelectronics, material science, biotechnology, medical science and atom and molecule.
The method of hollow beam mainly contains multimode optical fiber, photonic crystal fiber, liquid-core optical fibre, hollow optic fibre, axle pyramid and position photo method etc. at present, and what these methods mainly produced is the regional area hollow beam, is difficult to obtain the hollow beam of collimation.Utilize the inside and outside cone lens combination that two optical axis coincidences, the conical surface equate with angle at the bottom of cone can obtain quality collimated hollow light beams preferably, but two optical element combination have increased the difficulty that element is installed and light path is adjusted.
Summary of the invention
For addressing the above problem, the object of the present invention is to provide a kind of optical element that produces the annular hollow light beam.This optical element structure is simple, be easy to processing, and energy conversion efficiency is high, can obtain the annular hollow light beam of high light beam quality collimation.
As shown in Figure 1, a kind of optical element that produces the annular hollow light beam provided by the invention, its geometric configuration is to remove a circular cone concentric with the round platform bottom surface in the bottom of round platform, the medial surface of the side of this round platform and the institute's circular cone of removing formation is all polished, and light incides on the bus of this round platform and circular cone mirror-reflection all occurs;
Described a kind of optical element that produces the annular hollow light beam, it makes material preferably to the transparent optical glass of incident light, optical crystal or optical plastic, and the upper bottom surface of this element and bottom surface are coated with the anti-reflection film to incident light;
As shown in Figure 2, described a kind of optical element that produces the annular hollow light beam, its principle that produces hollow beam is achieved in that light enters from this optical element upper bottom surface, because the part of removing is full of even air dielectric, total reflection occurs in incident light between the bus of circular cone and round platform, make incident beam from round platform bottom surface outgoing annular hollow beam, as shown in Figure 3; Can obtain the hollow beam of different inside radiuss by the numerical values recited of optimal design circular cone bottom surface diameter 2r, can obtain the hollow beam of different external radiuss by the numerical values recited of optimal design round platform bottom surface diameter 2R, the numerical values recited of the height h by the optimal design circular cone obtains the different rings width of hollow beam;
Described round platform, its shaft section are isosceles trapezoid, and the angle γ on the hypotenuse of shaft section and base be 45 the degree, the height that these isosceles are trapezoidal and base are respectively H and 2R;
Described circular cone, its shaft section are that apex angle α is 90 degree, and base angle β is the isosceles right triangle of 45 degree, and bottom surface diameter and the height of this circular cone are respectively 2r and h, and satisfy 2r＜2R, h≤H.
Beneficial effect: a kind of optical element that produces the annular hollow light beam provided by the invention is to adopt to remove a method with the concentric circular cone in round platform bottom surface in the bottom of round platform and be made into, mainly be based on the principle of total reflection in the beam Propagation process, energy conversion efficiency can be up to 99%, and can obtain the annular hollow light beam output of high light beam quality collimation.
Description of drawings
Fig. 1 is a kind of optical element shaft section figure that produces the annular hollow light beam.
Fig. 2 is that the annular hollow light beam produces principle light path schematic diagram.
Fig. 3 is annular hollow light beam two-dimensional illumination intensity distribution schematic diagram.
Embodiment
EmbodimentA kind of optical element that produces the annular hollow light beam.
As shown in Figure 1, a kind of optical element that produces the annular hollow light beam provided by the invention, its geometric configuration is to remove a circular cone concentric with the round platform bottom surface in the bottom of round platform, the medial surface of the side of this round platform and the institute's circular cone of removing formation is all polished, and light incides on the bus of this round platform and circular cone mirror-reflection all occurs;
Described a kind of optical element that produces the annular hollow light beam, it makes material preferably to the transparent optical glass of incident light, optical crystal or optical plastic, and the upper bottom surface of this optical element and bottom surface are coated with the anti-reflection film to incident light, and transmissivity is 99.8%;
As shown in Figure 2, described a kind of optical element that produces the annular hollow light beam, its principle that produces hollow beam is achieved in that light enters from this optical element upper bottom surface, because the part of removing is full of even air dielectric, total reflection occurs in incident light between the bus of circular cone and round platform, make incident beam from round platform bottom surface outgoing annular hollow beam, as shown in Figure 3; Can obtain the hollow beam of different inside radiuss by the numerical values recited of optimal design circular cone bottom surface diameter 2r, can obtain the hollow beam of different external radiuss by the numerical values recited of optimal design round platform bottom surface diameter 2R, the numerical values recited of the height h by the optimal design circular cone obtains the different rings width of hollow beam;
Described round platform, its shaft section are isosceles trapezoid, and the angle γ on the hypotenuse of shaft section and base be 45 the degree, the height that these isosceles are trapezoidal and base are respectively H and 2R;
Described circular cone, its shaft section are that apex angle α is 90 degree, and base angle β is the isosceles right triangle of 45 degree, and bottom surface diameter and the height of this circular cone are respectively 2r and h, and satisfy 2r＜2R, h≤H.
Claims (3)
1. optical element that produces the annular hollow light beam, it is characterized in that geometric configuration is to remove a circular cone concentric with the round platform bottom surface in the bottom of round platform, the medial surface of the side of this round platform and the institute's circular cone of removing formation is all polished, light incides on the bus of this round platform and circular cone mirror-reflection all occurs, it makes material is to the transparent optical glass of incident light, optical crystal or optical plastic, the upper bottom surface of this element and bottom surface are coated with the anti-reflection film to incident light, it is inner that its principle that produces hollow beam is achieved in that light enters this optical element from upper bottom surface, because the part of removing is full of even air dielectric, total reflection occurs in incident light between the bus of circular cone and round platform, make incident beam from round platform bottom surface outgoing annular hollow beam, can obtain the hollow beam of different inside radiuss by the numerical values recited of optimal design circular cone bottom surface diameter 2r, can obtain the hollow beam of different external radiuss by the numerical values recited of optimal design round platform bottom surface diameter 2R, the numerical values recited of the height h by the optimal design circular cone obtains the different rings width of hollow beam.
2. a kind of optical element that produces the annular hollow light beam as claimed in claim 1, is characterized in that, described round platform axis cross section is isosceles trapezoid, and the angle γ on the hypotenuse of shaft section and base is 45 degree, and the height that these isosceles are trapezoidal and base are respectively H and 2R.
3. a kind of optical element that produces the annular hollow light beam as claimed in claim 1, is characterized in that, described cone axis cross section is that apex angle α is 90 degree, base angle β is the isosceles right triangle of 45 degree, bottom surface diameter and the height of this circular cone are respectively 2r and h, and satisfy 2r＜2R, h≤H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013100440543A CN103091740A (en) | 2013-02-01 | 2013-02-01 | Optical element capable of producing ringlike hollow beams |
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| CN2013100440543A CN103091740A (en) | 2013-02-01 | 2013-02-01 | Optical element capable of producing ringlike hollow beams |
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| CN103091740A true CN103091740A (en) | 2013-05-08 |
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| CN2013100440543A Pending CN103091740A (en) | 2013-02-01 | 2013-02-01 | Optical element capable of producing ringlike hollow beams |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103309044A (en) * | 2013-06-28 | 2013-09-18 | 哈尔滨工业大学 | Method for shaping circular beams into ring beams |
| CN105149774A (en) * | 2015-07-22 | 2015-12-16 | 北京工业大学 | Beam shaping method for laser-plasma arc coaxial hybrid welding |
| CN106501946A (en) * | 2017-01-10 | 2017-03-15 | 青岛镭创光电技术有限公司 | Optical lens module |
| 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 |
| CN111699425A (en) * | 2017-12-29 | 2020-09-22 | 南京镭芯光电有限公司 | Photon source comprising a plurality of light sources and an optical housing for receiving light emitted by the light sources |
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| CN101504490A (en) * | 2009-03-20 | 2009-08-12 | 上海理工大学 | Ring-shaped vector light beam focusing system |
| CN102518959A (en) * | 2011-11-18 | 2012-06-27 | 厦门大学 | Optically annular lighting device |
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| US5504627A (en) * | 1992-10-20 | 1996-04-02 | Samsung Electronics Co., Ltd. | Projection exposure system |
| JP2002182030A (en) * | 2000-12-11 | 2002-06-26 | Seiko Epson Corp | Polarization converting element and projector |
| KR100744648B1 (en) * | 2006-02-06 | 2007-08-02 | 한국기계연구원 | Laser beam shaping module |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103309044A (en) * | 2013-06-28 | 2013-09-18 | 哈尔滨工业大学 | Method for shaping circular beams into ring beams |
| CN103309044B (en) * | 2013-06-28 | 2015-02-04 | 哈尔滨工业大学 | Method for shaping circular beams into ring beams |
| CN105149774A (en) * | 2015-07-22 | 2015-12-16 | 北京工业大学 | Beam shaping method for laser-plasma arc coaxial hybrid welding |
| CN106501946A (en) * | 2017-01-10 | 2017-03-15 | 青岛镭创光电技术有限公司 | Optical lens module |
| CN106501946B (en) * | 2017-01-10 | 2023-02-14 | 青岛镭创光电技术有限公司 | Optical lens assembly |
| 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 |
| CN111699425A (en) * | 2017-12-29 | 2020-09-22 | 南京镭芯光电有限公司 | Photon source comprising a plurality of light sources and an optical housing for receiving light emitted by the light sources |
| US11385420B2 (en) | 2017-12-29 | 2022-07-12 | Nanjing Casela Technologies Corporation Limited | Photon source comprising a plurality of optical sources and an optical shell to receive the light emitted by the optical source |
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Application publication date: 20130508 |