CN102183461A - Endoscopic imaging probe - Google Patents
Endoscopic imaging probe Download PDFInfo
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- CN102183461A CN102183461A CN2011100711137A CN201110071113A CN102183461A CN 102183461 A CN102183461 A CN 102183461A CN 2011100711137 A CN2011100711137 A CN 2011100711137A CN 201110071113 A CN201110071113 A CN 201110071113A CN 102183461 A CN102183461 A CN 102183461A
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- grin lens
- probe
- optical fiber
- endoscopic imaging
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Abstract
The invention relates to an endoscopic imaging probe, which relates to the field of industrial and medical detection appliances. The prior art has the defects of large dimension and complicated structure and is not portable, and the prior art can not meet the actual requirements along with the reduction of a target to be detected and the limit of a measurement environment dimension. The invention aims to provide a probe which can be applied in various occasions and has the key points of the technical scheme that a coaxial groove is formed in the probe; a self-focusing lens is installed in the groove; a capillary and the component of an optical fiber are installed on one side of the self-focusing lens, and an MEMS (micro electro mechanical system) micro-lens is installed at the other side of the self-focusing lens; a small hole is formed on the probe in the connecting part of the optical fiber and the self-focusing lens; and a UV (ultra violet) adhesive is injected into the hole. The endoscopic imaging probe provided by the invention has the beneficial effects of simple structure, large conditioned weight, convenience in debugging and the like and can meet the requirements of different working distances and speckle dimensions.
Description
Technical field
The present invention relates to industry, medical treatment, detection, mechanical field, especially the based endoscopic imaging device.
Background technology
In industry, fields such as medical treatment often need be detected to obtain surface configuration, parameters such as inner distribution target.Thereby usually way is to be convenient to manual observation and to make a determination by target being carried out imaging.And, harsh requirement being proposed for image device profile and ability along with the dwindling and the restriction of testing environment size of target to be measured, the imaging system that satisfies this class demand is called endoscope.Size more than the conventional endoscope was bigger in the past, and complex structure is not light.Though mention the employing GRIN Lens in the endoscope such as patent CN1593351A and CN98232672, do not relate to GRIN Lens, but all be to be used for optical communication, do not possess the high-resolution imaging purposes, and the inapplicable image device of encapsulation way.
Summary of the invention
Purpose of the present invention is for providing a kind of multiple applications that can satisfy, efficiently the based endoscopic imaging probe.
The technical scheme that realizes the foregoing invention purpose is as follows: based endoscopic imaging is popped one's head in to have a coaxial grooves in probe, and the GRIN Lens that length is L is housed in the groove.In GRIN Lens one side channel, kapillary is housed, the external diameter coupling of external diameter capillaceous and GRIN Lens, optical fiber is housed in kapillary forms assembly, the end face of optical fiber capillary module and adjacent GRIN Lens end face are in contact with one another, in another side channel of GRIN Lens, the MEMS micro mirror is housed, the MEMS micro mirror back side contacts with the section with slope, the front of MEMS lens and the distance of GRIN Lens are L2, on the probe of optical fiber and GRIN Lens junction, have aperture, in the hole, be marked with UV glue.
Another kind of structure is for being equipped with glass column between optical fiber capillary module and GRIN Lens, length is L1, on the probe of glass column and optical fiber capillary module junction, have aperture, in the hole, be marked with uv glue, on the probe of glass column and GRIN Lens junction, have aperture, in aperture, be marked with uv glue.
GRIN Lens diameter＜1.0mm, surperficial many planes or sphere or aspheric surface.
Light pricker and GRIN Lens abutted surface are plane or band side angle plane and aspheric surface.
Above technical scheme satisfies the different operating distance and to the requirement of imaging resolution by the distance between design optical fiber and lens, and this spacing is designed to the tolerance compensating device and is convenient to the actual middle error compensation of debuging simultaneously.
In the assemble method, fixing by directly encapsulating with application finished product probe, parts such as minimizing center fixed coaxial sleeve, the reduction assembly process is raised the efficiency.
Context of detection is checked institute's mounted lens quality by measurement reflective light intensity and measurement spot size mode, and can onlinely be debug.
Technique effect and advantage
Based endoscopic imaging lens arrangement of the present invention is simple, and design parameter is flexible, can satisfy the different operating distance, different spot size requirements.Assembling mode is simple, easily goes, and tolerance is convenient to greatly debug.Detection method is practical reliable, convenient online debug optical element and detection adjustment.
Description of drawings
Fig. 1 is the fundamental diagram of based endoscopic imaging probe of the present invention
Fig. 2 is an optical module annexation synoptic diagram
Based endoscopic imaging sonde configuration synoptic diagram when Fig. 3 is L1=0
Based endoscopic imaging probe outward appearance vertical view when Fig. 4 is L1=0
Fig. 5 is the based endoscopic imaging sonde configuration synoptic diagram of L1 ≠ 0 o'clock
Fig. 6 is the based endoscopic imaging probe outward appearance vertical view of L1 ≠ 0 o'clock
Fig. 7 is an optical principle detection system synoptic diagram
Fig. 8 has the optical principle detection system synoptic diagram of accepting screen
The title of each label is as follows among the figure:
1-optical fiber; 2-self-focusing imaging len; The 3-hot spot; The 4-kapillary; The 5-probing shell; The 6-MEMS micro mirror; 7-UV glue; The 8-probing shell; The 9-glass column; The 10-reverberation; 11-accepts screen.
Embodiment:
Based endoscopic imaging comprises optical fiber 1 and a self-focusing imaging len 2 with camera lens.Optical fiber 1 is used for transmitting beam, and GRIN Lens 2(is hereinafter to be referred as Glens) the next light of optical fiber 1 transmission is converged, at the hot spot 3 of formation diameter in distance L 2 places, thereby have high-resolution optical imagery less than 20 microns.The Glens2 design process is: refractive index n 0 on the axle, the index distribution constant A. and optical fiber and Glens spacing are L1, and operating distance is L2, according to the operating distance L2 of design requirement, determine length of lens L by design formula, and the spacing L1 of optical fiber and lens.Also be used as the tolerance compensating device with time interval L1 and compensate the influence that brings owing to the Glens foozle, make that the build-up tolerance restriction is very little quality of optical imaging.Glens can be cylinder, also can be other shapes, and the surface is plane, sphere or aspheric surface.The Glens diameter dimension is less than 1.0mm.Optical fiber and Glens abutted surface can design arbitrary shape on request, comprise that plane, chamfering, aspheric surface etc. are to improve the lens imaging optical characteristics.
The purpose of encapsulation is to keep optical axis with one heart and the assembling mode and the process that adopt optical fiber 1 and Glens2, and the different designs parameter can cause different assemble methods.
Embodiment one: when design L1 was 0, promptly optical fiber contacted with Glens.
At first optical fiber is expanded diameter to mate with the Glens2 external diameter that uses by capillary 4, then, have aperture at an endoscope probe 5 that has coaxial grooves at optical fiber 1 and Glens2 junction, lens inject UV glue 7 after being put into the position in the hole, solidify under uviol lamp at last.
Embodiment two: when design L1 is not equal to 0, control and guarantee designing requirement by using L1 length glass column 9.
This probe 8 reaches glass column 9 and Glens2 junction and all has aperture at optical fiber 3 and glass column 9, and lens inject UV glue 7 after being put into the position in the hole, solidify under uviol lamp at last.
Optical properties detects
For based endoscopic imaging, operating distance L2 and focal beam spot size 3 are two major parameter indexs of imaging len, and this can have influence on the quality and the image resolution ratio of imaging, so need these two parameters of lens are detected.Detect principle and be light source by optical fiber after Glens converges is a hot spot, near hot spot, place the common available catoptron of a reverberation 10(, prism etc.), light is returned along light path, measure the back light energy simultaneously, when returning the energy maximum, reverberation 10 positions are facula position, measure the distance of reflecting object 10 and Glens front end again, can measure the operating distance of Glens imaging len.
The detection method of spot size
Method: by directly or indirectly measuring the focal beam spot size.
To the visible light wave range light source, adopt direct measuring method: after the range determination of finishing the work, the staking-out work distance, and place one at distance L 3 places and accept screen, hot spot is presented on accepts on the wind 11, can calculate the spot diameter size D that goes out in the real work distance with dip stick (or using other survey instruments) measuring light spot diameter size D1. according to Gauss's propagation formula.Carry out imaging for other systems such as non-visible wavelength use OCT and detect the judgement optical quality.
Claims (4)
1. based endoscopic imaging is popped one's head in, it is characterized by and in probe, have a coaxial grooves, the GRIN Lens of L is housed in the groove, in GRIN Lens one side channel, kapillary is housed, the external diameter coupling of external diameter capillaceous and GRIN Lens, optical fiber is housed in kapillary forms assembly, optical fiber and end face capillaceous and adjacent GRIN Lens end face are in contact with one another, in the groove of the opposite side of GRIN Lens, the MEMS micro mirror is housed, the MEMS micro mirror back side contacts with the section with slope, the front of MEMS micro mirror and the distance of GRIN Lens are LZ, have aperture on the probe of optical fiber and GRIN Lens junction, are marked with UV glue in the hole.
2. according to the described based endoscopic imaging probe of claim (1), it is characterized by between optical fiber capillary module and GRIN Lens glass column is housed, length is LI, on the probe of glass column and optical fiber capillary assembly junction, have aperture, in aperture, be marked with UV glue, on the probe of glass column and GRIN Lens junction, have aperture, in aperture, be marked with UV glue.
3. based endoscopic imaging probe according to claim 1 and 2 is characterized by GRIN Lens diameter＜1.0mm, and the surface is plane or sphere or aspheric surface.
4. based endoscopic imaging probe according to claim 1 and 2, it is characterized by optical fiber and GRIN Lens abutted surface is the plane, normal chamfering plane or aspheric surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011100711137A CN102183461A (en) | 2011-03-23 | 2011-03-23 | Endoscopic imaging probe |
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| CN2011100711137A CN102183461A (en) | 2011-03-23 | 2011-03-23 | Endoscopic imaging probe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033929A (en) * | 2012-12-06 | 2013-04-10 | 无锡微奥科技有限公司 | Micro electro mechanical system (MEMS) scanning probe |
| CN105769112A (en) * | 2016-03-30 | 2016-07-20 | 中国科学院上海光学精密机械研究所 | Optical probe for endoscopic imaging |
| CN108354574A (en) * | 2018-02-08 | 2018-08-03 | 清华大学 | A kind of array circular scanning optical coherent chromatographic imaging is interior to spy upon head |
| CN108420459A (en) * | 2018-02-09 | 2018-08-21 | 武汉艾欧医疗科技有限公司 | A kind of blood vessel endoscope imaging probe and imaging method |
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| US20010055462A1 (en) * | 2000-06-19 | 2001-12-27 | Seibel Eric J. | Medical imaging, diagnosis, and therapy using a scanning single optical fiber system |
| CN1357778A (en) * | 2000-12-12 | 2002-07-10 | 福建华科光电有限公司 | Collimator making process |
| US20030142934A1 (en) * | 2001-12-10 | 2003-07-31 | Carnegie Mellon University And University Of Pittsburgh | Endoscopic imaging system |
| US20050078920A1 (en) * | 2003-10-10 | 2005-04-14 | Lee Yeong Gyu | Micro optical communication device package |
| CN101303438A (en) * | 2008-06-20 | 2008-11-12 | 福州高意通讯有限公司 | Method for manufacturing collimator |
| CN101408645A (en) * | 2008-11-25 | 2009-04-15 | 中国科学院上海微系统与信息技术研究所 | Ellipse light spot optical fiber collimator and application thereof |
| CN201965086U (en) * | 2011-03-23 | 2011-09-07 | 无锡微奥科技有限公司 | Endoscopic imaging probe |
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2011
- 2011-03-23 CN CN2011100711137A patent/CN102183461A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010055462A1 (en) * | 2000-06-19 | 2001-12-27 | Seibel Eric J. | Medical imaging, diagnosis, and therapy using a scanning single optical fiber system |
| CN1357778A (en) * | 2000-12-12 | 2002-07-10 | 福建华科光电有限公司 | Collimator making process |
| US20030142934A1 (en) * | 2001-12-10 | 2003-07-31 | Carnegie Mellon University And University Of Pittsburgh | Endoscopic imaging system |
| US20050078920A1 (en) * | 2003-10-10 | 2005-04-14 | Lee Yeong Gyu | Micro optical communication device package |
| CN101303438A (en) * | 2008-06-20 | 2008-11-12 | 福州高意通讯有限公司 | Method for manufacturing collimator |
| CN101408645A (en) * | 2008-11-25 | 2009-04-15 | 中国科学院上海微系统与信息技术研究所 | Ellipse light spot optical fiber collimator and application thereof |
| CN201965086U (en) * | 2011-03-23 | 2011-09-07 | 无锡微奥科技有限公司 | Endoscopic imaging probe |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033929A (en) * | 2012-12-06 | 2013-04-10 | 无锡微奥科技有限公司 | Micro electro mechanical system (MEMS) scanning probe |
| CN105769112A (en) * | 2016-03-30 | 2016-07-20 | 中国科学院上海光学精密机械研究所 | Optical probe for endoscopic imaging |
| CN108354574A (en) * | 2018-02-08 | 2018-08-03 | 清华大学 | A kind of array circular scanning optical coherent chromatographic imaging is interior to spy upon head |
| CN108354574B (en) * | 2018-02-08 | 2020-07-28 | 清华大学 | Array type annular scanning optical coherence tomography endoscopic probe |
| CN108420459A (en) * | 2018-02-09 | 2018-08-21 | 武汉艾欧医疗科技有限公司 | A kind of blood vessel endoscope imaging probe and imaging method |
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Application publication date: 20110914 |