CN108801951B - Lens sealing precision adjusting device based on stable cavity absorption spectrum technology - Google Patents
Lens sealing precision adjusting device based on stable cavity absorption spectrum technology Download PDFInfo
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- CN108801951B CN108801951B CN201810538470.1A CN201810538470A CN108801951B CN 108801951 B CN108801951 B CN 108801951B CN 201810538470 A CN201810538470 A CN 201810538470A CN 108801951 B CN108801951 B CN 108801951B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
Abstract
The invention provides a lens sealing precision adjusting device based on a stable cavity absorption spectrum technology, and relates to the technical field of detection. The adjustable lens comprises a sleeve flange, wherein the sleeve flange is connected with an adjusting sleeve, the adjusting sleeve is connected with a lens base, a high-reflection lens is sleeved on the lens base, the sleeve flange is connected with an elastic sealing ring, the elastic sealing ring is in compression joint with the high-reflection lens, and the adjusting sleeve is connected with a precision adjuster. The invention solves the technical problems that in the prior art, the high-precision adjusting mirror bracket has more movable parts, and the connection of each part is easy to loosen, thereby influencing the adjusting precision. The invention has the beneficial effects that: the cavity sealing performance and the online three-dimensional precise adjustment of the high-reflection lens are ensured, a large number of parts are reduced, no movable part is arranged, and the integration level is improved. Simple structure is reasonable, installation repeatability is good, practices thrift the maintenance cost. According to the measurement requirement, the piezoelectric ceramic ring is used, so that the application range is expanded.
Description
Technical Field
The invention relates to the technical field of detection, in particular to a sealing and precise adjusting device for a high reflection lens applied to cavity ring-down or cavity enhanced gas absorption spectrum measurement.
Background
Gas absorption spectroscopy techniques based on stable resonators have been widely used for trace gas concentration measurements. The establishment of the stable resonant cavity requires severe environmental conditions, not only avoids the pollution of the high reflection lens, but also resists mechanical vibration, and the establishment, debugging and measurement are usually carried out in a constant temperature and humidity laboratory with high cleanliness. The adjustment of such a high-fineness stable resonant cavity requires a professional technician and does not have to adjust the mirror holder with high precision. In practice, it is often necessary to adjust the resonant cavity within a closed cavity. In product application and later maintenance, online adjustment cannot be performed, a cavity needs to be opened, and environmental interference is introduced. Chinese patent application publication No. CN 104237129 a, application publication date 2014 12, 24, entitled "seal adjustment mirror holder for cavity enhanced spectroscopy instrument," discloses a seal adjustment mirror holder. The air-tightness-type lens is provided with a lens fixed on a lens fixing seat and a corrugated pipe locking hoop fixed below the lens fixing seat, wherein an O-shaped gasket is respectively arranged at two sides of the lens and used for air tightness; the upper end face of the corrugated pipe is connected with the lower end of the lens fixing seat in a sealing mode through a sealing ring. An adjusting ring which can rotate around the lens fixing seat is arranged on the lens fixing seat. The adjusting ring is externally provided with a spectacle frame adjusting frame which can rotate around the adjusting ring. The technical scheme is that the high-precision adjusting mirror bracket mainly realizes the control of the x, y and z directions of the lenses through the rotary adjuster. The movable parts are more, and the connection of each part is easy to loosen, so that the adjustment precision is influenced.
Disclosure of Invention
In order to solve the technical problems that in the prior art, the number of movable parts of a high-precision adjusting mirror frame is large, connection of all parts is easy to loosen, and adjusting precision is affected, the invention provides a lens sealing precision adjusting device based on a stable cavity absorption spectrum technology, and the purposes of good cavity sealing performance, convenience in online three-dimensional precision adjustment of lenses and high device integration level are achieved.
The technical scheme of the invention is as follows: a lens sealing fine adjustment device based on a stable cavity absorption spectrum technology comprises: the sleeve flange, sleeve flange joint has adjusting sleeve, and adjusting sleeve is connected with the lens base, and the lens base has cup jointed the high reflection lens, and sleeve flange joint has elastic seal circle, and elastic seal circle and high reflection lens crimping, adjusting sleeve are connected with the precision adjuster. The cavity sealing performance and the online three-dimensional precise adjustment of the high-reflection lens are ensured, a large number of parts are reduced, no movable part is arranged, and the integration level is improved.
Preferably, the adjusting sleeve is barrel-shaped, the inner cavity is circular truncated cone-shaped, and the opening end is the large diameter of the circular truncated cone; do benefit to the installation location and prevent the dislocation, ensure that the installation is repeated stable, convenient simple, the minor diameter of round platform is in adjusting sleeve bottom, contacts with the lens base, provides initial pressure for the lens, guarantees effectively sealed.
Preferably, the adjusting sleeve is provided with a mounting hole, the connecting part of the horizontal plane and the vertical plane of the outer wall of the adjusting sleeve is an inclined plane, the central axis of the mounting hole is parallel to the vertical line of the inclined plane, and the precision adjuster is inserted into the mounting hole; the inclined plane structure not only reduces the size, but also enlarges the operation space, and is beneficial to system integration and lens adjustment.
Preferably, the precision regulator comprises a rotating screw and a top bead, and the top bead is respectively in pressure joint with the rotating screw and the lens base; the operation is simple and the use is reliable.
Preferably, the lens base is connected with a piezoelectric ceramic ring, and the piezoelectric ceramic ring is in compression joint with the high-reflection lens; the application range is enlarged.
Preferably, the sleeve flange is connected with a circular pipe flange which is connected with a circular pipe in a sealing manner; the connection is convenient and reliable.
Preferably, the circular pipe flange is connected with a flange sealing ring, and the flange sealing ring is sealed with the sleeve flange; and sealing is ensured.
Preferably, three precise regulators are uniformly distributed by taking the center of the upper end surface of the regulating sleeve as a circle center; the adjustment of the high-reflection lens in the x direction, the y direction and the z direction can be realized without rotating.
Compared with the prior art, the invention has the beneficial effects that: the cavity sealing performance and the online three-dimensional precise adjustment of the high-reflection lens are ensured, a large number of parts are reduced, no movable part is arranged, and the integration level is improved. Simple structure is reasonable, installation repeatability is good, practices thrift the maintenance cost. The piezoelectric ceramic ring can be used without being opened according to the measurement requirement, so that the application range is expanded.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
fig. 2 is a top view of fig. 1.
In the figure: 1-sleeve flange; 2-elastic sealing ring; 3-adjusting the sleeve; 4-a precision regulator; 5-a piezoelectric ceramic ring; 6-high reflection lens; 7-a lens base; 8-circular pipe flange; 9-round tube; 41-rotating the screw; 42-top bead; 81-flange seal ring.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example 1:
as shown in fig. 1 and 2, a lens sealing fine adjustment device based on the stable cavity absorption spectrum technology comprises: a sleeve flange 1. The sleeve flange 1 is disc-shaped. The upper surface of the sleeve flange 1 is provided with an adjusting sleeve connecting groove and an elastic sealing ring groove. The adjusting sleeve connecting groove and the elastic sealing ring groove are in a circular ring shape, and the circle center of the circular ring is coincided with the circle center of the disc of the sleeve flange 1. The diameter of the adjusting sleeve connecting groove ring is larger than that of the elastic sealing ring groove ring. An elastic sealing ring 2 is arranged in the groove of the elastic sealing ring. The elastic sealing ring 2 is higher than the upper surface of the sleeve flange 1. The lower surface of the sleeve flange 1 is a plane. The middle of the sleeve flange 1 is provided with a sleeve flange hole. The diameter of the sleeve flange hole is smaller than that of the elastic sealing ring groove ring. The sleeve flange hole penetrates through the upper surface and the lower surface of the sleeve flange 1. The sleeve flange 1 is connected with an adjusting sleeve 3. The adjusting sleeve 3 is barrel-shaped, the inner cavity is round table-shaped, and the opening end is the major diameter of the round table. The adjusting sleeve 3 is buckled on the upper surface of the sleeve flange 1, and the opening is embedded into the connecting groove of the adjusting sleeve. The upper end of the adjusting sleeve 3 is a bottom surface. The bottom surface of the adjusting sleeve 3 is provided with an adjusting sleeve hole. The adjusting sleeve hole is in a round table shape, the large opening is arranged at the upper end, and the diameter of the small opening is equal to that of the sleeve flange hole. The connecting part of the horizontal plane and the vertical plane of the outer wall of the adjusting sleeve 3 is an inclined plane. The adjusting sleeve 3 is provided with a mounting hole. The central axis of the mounting hole is parallel to the vertical line of the inclined plane. The mounting hole runs through the inclined plane and the inner wall of the adjusting sleeve 3. The mounting hole is fixedly connected with an internal thread sleeve. The adjusting sleeve 3 is connected with a lens base 7. The lens mount 7 is located in the inner cavity of the adjustment sleeve 3. The lens base 7 is barrel-shaped, the opening of which faces downwards, and the upper end of which is a bottom surface. The inner cavity of the lens base 7 is a stepped hole, and the large-diameter hole is positioned at the opening end of the lens base 7. The bottom surface of the lens base 7 is provided with a lens base hole. The diameter of the lens base hole is equal to that of the adjusting sleeve hole. The lens base 7 is sleeved with a high reflection lens 6. The side surface of the high-reflection lens 6 is in transition fit with the large hole of the stepped hole of the lens base 7. The lens mount 7 is connected to a piezo ceramic ring 5. The piezoelectric ceramic ring 5 is positioned in a small hole of the stepped hole of the lens base 7, and the small hole of the stepped hole of the lens base 7 exposed from the lower surface enters a large hole of the stepped hole of the lens base 7. The upper surface of the high reflection lens 6 is pressed with the piezoelectric ceramic ring 5. The lower surface of the high-reflection lens 6 is pressed with the elastic sealing ring 2. The adjusting sleeve 3 is connected with a precision adjuster 4. The number of the precise regulators 4 is three, and the precise regulators are uniformly distributed by taking the center of the upper end surface of the regulating sleeve 3 as a circle center. The fine adjuster 4 includes a rotating screw 41 and a top ball 42. The rotary screw 41 is connected with an internal thread sleeve fixedly connected with the mounting hole of the adjusting sleeve 3. The head of the rotating screw 41 is a conical blind hole. The diameter of the opening of the conical blind hole is slightly smaller than the ball diameter of the top ball 42. The top bead 42 is pressed against the rotary screw 41 and the lens base 7, respectively. One end of the top bead 42 is pressed with the conical blind hole, and the other end is pressed with the connecting part of the horizontal plane and the vertical plane of the outer surface of the lens base 7. The sleeve flange 1 is connected with a circular pipe flange 8. The circular tube flange 8 is disc-shaped, and the upper surface is a plane. The circular tube flange 8 is connected with a circular tube 9 in a sealing way. The center of the circular tube flange 8 is provided with a circular tube flange hole. The circular tube 9 is inserted into the circular tube flange hole, and the sealing method adopted by the embodiment is to weld the outer side wall of the circular tube 9 and the lower surface of the circular tube flange 8. The upper surface of the circular tube flange 8 is provided with a flange seal ring groove. The groove of the flange sealing ring is circular. The circle center of the flange seal ring groove ring coincides with the circle center of the circular pipe flange hole. The diameter of the inner circle of the circular ring of the groove of the flange sealing ring is larger than that of the flange hole of the circular pipe. The circular tube flange 8 is connected with a flange sealing ring 81. The flange seal 81 is embedded in the flange seal groove. When the upper surface of the circular tube flange 8 is in compression connection with the lower surface of the sleeve flange 1, the lower surface of the sleeve flange 1 compresses the flange sealing ring 81.
When the device is installed, the circular tube flange 8 is connected with the circular tube 9 in a sealing mode. The flange seal ring groove of the circular pipe flange 8 is embedded into the flange seal ring 81. An elastic sealing ring 2 is embedded in the groove of the elastic sealing ring of the sleeve flange 1. The lens base 7 is embedded into the adjusting sleeve 3, and the outer surface of the bottom surface of the lens base 7 is tightly attached to the inner surface of the bottom surface of the adjusting sleeve 3. A piezoelectric ceramic ring 5 is mounted on the lens mount 7. The lead of the piezoelectric ceramic ring 5 passes through the side surface of the lens base 7 and the side surface of the adjusting sleeve 3 and extends out of the adjusting sleeve 3. And sealing the lead of the piezoelectric ceramic ring 5 and the side surface of the adjusting sleeve 3. The high reflection mirror 6 is embedded in the mirror base 7 so that the upper surface of the high reflection mirror 6 abuts on the piezoelectric ceramic ring 5. The open end of the lens base 7 is embedded into the connecting groove of the adjusting sleeve, and the lens base 7 and the sleeve flange 1 are fixed by screws. And fixing the sleeve flange 1 and the circular tube flange 8 by using screws. The knob 42 is inserted into a hole of the female screw housing of the adjustment sleeve 3, and the rotary screw 41 is connected to the female screw housing. When the high reflection mirror 6 is used after being installed, the high reflection mirror 6 can be precisely adjusted in three dimensions by only screwing or loosening the rotary screw 41. If the piezoelectric ceramic ring 5 is used, the lead of the piezoelectric ceramic ring 5 extending out of the adjusting sleeve 3 is connected. In the adjusting process, the device is always in a sealing state and is not influenced by the outside.
Claims (1)
1. A lens sealing fine adjustment device based on a stable cavity absorption spectrum technology comprises: sleeve flange (1), its characterized in that: the adjustable high-reflection mirror is characterized in that the sleeve flange (1) is connected with an adjusting sleeve (3), the adjusting sleeve (3) is connected with a mirror base (7), the mirror base (7) is sleeved with a high-reflection mirror (6), the sleeve flange (1) is connected with an elastic sealing ring (2), the elastic sealing ring (2) is in compression joint with the high-reflection mirror (6), and the adjusting sleeve (3) is connected with a precision regulator (4);
the adjusting sleeve (3) is barrel-shaped, the inner cavity of the adjusting sleeve is circular truncated cone-shaped, and the opening end of the adjusting sleeve is the large diameter of the circular truncated cone;
the adjusting sleeve (3) is provided with a mounting hole, the connecting part of the horizontal plane and the vertical plane of the outer wall of the adjusting sleeve (3) is an inclined plane, the central axis of the mounting hole is parallel to the vertical line of the inclined plane, and the precision adjuster (4) is inserted into the mounting hole;
the precise regulator (4) comprises a rotating screw (41) and a top bead (42), wherein the top bead (42) is respectively in compression joint with the rotating screw (41) and the lens base (7);
the lens base (7) is connected with a piezoelectric ceramic ring (5), and the piezoelectric ceramic ring (5) is in compression joint with the high-reflection lens (6);
the sleeve flange (1) is connected with a circular tube flange (8), and the circular tube flange (8) is hermetically connected with a circular tube (9);
the circular tube flange (8) is connected with a flange sealing ring (81), and the flange sealing ring (81) is sealed with the sleeve flange (1);
the number of the precise regulators (4) is three, and the precise regulators are uniformly distributed by taking the center of the upper end surface of the regulating sleeve (3) as the circle center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810538470.1A CN108801951B (en) | 2018-05-30 | 2018-05-30 | Lens sealing precision adjusting device based on stable cavity absorption spectrum technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810538470.1A CN108801951B (en) | 2018-05-30 | 2018-05-30 | Lens sealing precision adjusting device based on stable cavity absorption spectrum technology |
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| Publication Number | Publication Date |
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| CN108801951A CN108801951A (en) | 2018-11-13 |
| CN108801951B true CN108801951B (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810538470.1A Active CN108801951B (en) | 2018-05-30 | 2018-05-30 | Lens sealing precision adjusting device based on stable cavity absorption spectrum technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI723643B (en) * | 2019-11-25 | 2021-04-01 | 財團法人工業技術研究院 | Laser processing system and foldable lens assembly protective device |
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| CN101400967A (en) * | 2006-03-14 | 2009-04-01 | 波科海姆技术公共有限公司 | Device with precise tip-tilt adjustment |
| CN201656235U (en) * | 2009-12-11 | 2010-11-24 | 深圳市大族激光科技股份有限公司 | Fold back microscope base of laser |
| CN104237129A (en) * | 2014-10-08 | 2014-12-24 | 上海理工大学 | Sealing adjusting mirror bracket for cavity enhanced spectrum instrument |
Family Cites Families (6)
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| RU2239265C2 (en) * | 2002-07-17 | 2004-10-27 | Красноярский государственный университет | High-pressure and high-frequency carbon dioxide waveguide laser |
| US7679845B2 (en) * | 2007-01-25 | 2010-03-16 | Newport Corporation | Adjustable/non-adjustable precision optical mounts |
| CN104729998A (en) * | 2015-02-27 | 2015-06-24 | 浙江省计量科学研究院 | Atmosphere visibility measurement device based on optical cavity ring down spectroscopy technology |
| CN205643813U (en) * | 2015-12-29 | 2016-10-12 | 中国电子科技集团公司第十一研究所 | Fixing system of laser cavity mirror |
| CN106444111A (en) * | 2016-11-25 | 2017-02-22 | 北京兆维电子(集团)有限责任公司 | Upper polaroid precise adjusting device used for detecting LCD |
| CN207216105U (en) * | 2017-09-20 | 2018-04-10 | 精快激光科技（苏州）有限公司 | Optical component fine adjustment erecting device |
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Patent Citations (3)
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|---|---|---|---|---|
| CN101400967A (en) * | 2006-03-14 | 2009-04-01 | 波科海姆技术公共有限公司 | Device with precise tip-tilt adjustment |
| CN201656235U (en) * | 2009-12-11 | 2010-11-24 | 深圳市大族激光科技股份有限公司 | Fold back microscope base of laser |
| CN104237129A (en) * | 2014-10-08 | 2014-12-24 | 上海理工大学 | Sealing adjusting mirror bracket for cavity enhanced spectrum instrument |
Non-Patent Citations (1)
| Title |
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| "光腔衰荡光谱装置的建立并测量高反镜的反射率";吕晓宁;《中国优秀硕士学位论文全文数据库》;20121015;第37页 * |
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