CN204636275U - OCT miniature imaging is popped one's head in - Google Patents
OCT miniature imaging is popped one's head in Download PDFInfo
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- CN204636275U CN204636275U CN201520267841.9U CN201520267841U CN204636275U CN 204636275 U CN204636275 U CN 204636275U CN 201520267841 U CN201520267841 U CN 201520267841U CN 204636275 U CN204636275 U CN 204636275U
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Abstract
A kind of OCT miniature imaging is popped one's head in, and comprise optical fiber (1) and lens pillar (2), one end of lens pillar (2) is connected with optical fiber (1), it is characterized in that the other end of described lens pillar (2) is connected with the mirror based fiber optica (3) that one section of section is D type.This utility model structure is simple, easily manufactured, can reduce return loss, and suppress the generation of interference ring, obviously reduce noise, can not cause distortion to emergent light spot, optical quality is good.
Description
Technical field
this utility model relates to a kind of medical apparatus and instruments, especially a kind of medical inspection fibre-optical probe, relates to a kind of OCT miniature imaging particularly and pops one's head in.
Background technology
means of optical coherence tomography (Optical Coherence Tomography, OCT) be a kind of imaging technique developed rapidly for nearly ten years, it utilizes the ultimate principle of weak coherent light interferometer, detect biological tissue different depth aspect to the back-reflection of incident weak coherent light or scattered signal several times, by scanning, biological tissue's two dimension or three dimensional structure image can be obtained.
OCT is a kind of new optical diagnostic method, can carry out contactless, the Noninvasive fault imaging of live body ocular tissue microscopic structure.OCT is ultrasonic optical analog product, but its azimuthal resolution depends on the coherence of light source, 10 μm can be reached, and penetration depth is hardly by the restriction of the transparent refracting media of eye, observable anterior ocular segment, can show again the morphosis of oculi posterior segment, within the eye the diagnosis of disease especially retinal diseases, the aspect such as follow-up observation and treatment effectiveness evaluation has a good application prospect.
OCT is the new technique being applied to ophthalmology recent years.OCT is a kind of noncontact, high-resolution chromatography and biological microscope imaging device.The live body that it can be used for a rear section structure (comprising retina, retinal nerve fibre layer, macula lutea and optic disc) is checked, axial tomography and measurement, be particularly useful as to help to detect and the diagnostic device of management ophthalmic (including but not limited to macular hole, cystoid macular edema, diabetic retinopathy, senile degeneration of macula and glaucoma).OCT is divided into time domain and frequency domain two class now, respectively has pluses and minuses.Time domain OCT cost performance is high, has been enough to the inspection of most of optical fundus and glaucoma disease and Technical comparing is ripe, and it utilizes near infrared ray and principle of optical interference to carry out imaging to biological tissue.The light that light source briefly sends by the principle of interference imaging is exactly divided into two bundles, is a branch ofly transmitted into testee (vascular tissue), and this section of light beam is called as signal arm, and another bundle, to reference to illuminator, is called reference arm.Then from tissue (signal arm) and the two-beam Signal averaging that reflects from illuminator (reference arm).But when signal arm is consistent with the length of reference arm, will interfere.The optical signal reflected from tissue shows different strong and weak with the shape of tissue.It is superposed with the reference optical signal of returning from mirror reflection, and when light wave fixed point is consistent, signal strengthens (increase and interfere), signal weakening (cut down and interfere) when light wave fixed point direction is contrary.Due to interfere only occur in signal arm identical with reference arm length time, so change the position of illuminator, just change the length of reference arm, then can obtain the signal of the tissue of different depth.These optical signals just can obtain organizing faultage image through computer disposal.Current OCT is divided into two large classes: time domain OCT (TD-OCT) and frequency domain OCT(FD-OCT).In coronary artery, the modal form of OCT is time domain OCT (TD-OCT).Time domain OCT is that the optical signal reflected from tissue is at one time superposed, interfered with the optical signal returned with reference to mirror reflection, then imaging.The feature of frequency domain OCT is maintaining static with reference to illuminator of reference arm, realizes the interference of signal by changing light source light wave frequency.FD-OCT is divided into two kinds: (1) laser scanning OCT(SS-OCT), this OCT utilizes wavelength variable LASER Light Source to launch the light wave of different wave length; (2) spectrum OCT(SD-OCT), it utilizes the spectrophotometer of high image resolution to be separated the light wave of different wave length.The near infrared ray sent from light source arrives tissue by optical fiber and probe.The light wave organizing backscatter to return is by probe collection, and the lightwave signal with reference arm combines to be formed interferes, and then through computer analyzing, constructs the very high resolution image of display organization internal microstructure.The maximum restriction of OCT only has about 1.5mm to opaque organism penetration depth.In addition, because near infrared ray is difficult to through erythrocyte, OCT is to needing blocking blood flow during blood vessel imaging or rinsing blood vessel to get rid of the blood in blood vessel.The shortcoming of this method causes myocardial ischemia, and operation is more complicated, limits the clinical practice of OCT.Frequency domain OCT technology considerably improves sample rate while improving system sensitivity time domain.In frequency domain OCT, depth scan can not needed by synchronization gain by the whole depth structure (A sweep) of synchronization gain.
Just because of the advantage of OCT in Image detection field, in recent years, people find that again it has a wide range of applications in checking at angiography, intraluminal tissue (stomach), and its application will be expanded, reduce return loss and the noise of fibre-optical probe, reduce distortion, it is crucial for improving optical quality, therefore, must improve the structure of fibre-optical probe.
Summary of the invention
The purpose of this utility model be complicated for existing OCT fibre-optical probe front-end architecture, pip is many, return loss is larger, thus make noise comparatively large, affect the problems such as intracavity image quality, design a kind of return loss and noise is little, can significantly improve the OCT miniature imaging of image quality pops one's head in.
The technical solution of the utility model is:
A kind of OCT miniature imaging is popped one's head in, and comprise optical fiber 1 and lens pillar 2, one end of lens pillar 2 is connected with optical fiber 1, it is characterized in that the other end of described lens pillar 2 is connected with the mirror based fiber optica 3 that one section of section is D type.
Described optical fiber 1, lens pillar 2 and mirror based fiber optica 3 faying face are each other the inclined-plane being not equal to 90 degree with their axis angle.
Plated film or utilize total internal reflection principle to carry out the refraction of light on the reflecting surface that described mirror based fiber optica 3 does not contact with lens pillar 2.
Described optical fiber 1 is single-mode fiber or multimode fibre.
Described optical fiber 1, to be interconnected by the mode of gluing together or weld between lens pillar 2 and mirror based fiber optica 3.
Connection inclined-plane not plated film or the plating anti-reflection film of described optical fiber 1, lens pillar 2 and mirror based fiber optica 3.
The beneficial effects of the utility model:
This utility model structure is simple, easily manufactured, can reduce return loss, and suppress the generation of interference ring, obviously reduce noise, can not cause distortion to emergent light spot, optical quality is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the cross-sectional schematic of mirror based fiber optica of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is further described.
As shown in Figure 1-2.
A kind of OCT miniature imaging is popped one's head in, comprise optical fiber 1(and can be single-mode fiber or multimode fibre) and lens pillar 2, one end of lens pillar 2 is connected by the mode of gluing together or weld with optical fiber 1, the other end of described lens pillar 2 is connected with the mirror based fiber optica 3 that one section of section is D type (as shown in Figure 2), plated film or utilize total internal reflection principle to carry out the refraction of light on the reflecting surface that mirror based fiber optica 3 does not contact with lens pillar 2.Described optical fiber 1, lens pillar 2 and mirror based fiber optica 3 faying face are each other the inclined-plane being not equal to 90 degree with their axis angle, connection inclined-plane not plated film or the plating anti-reflection film of optical fiber 1, lens pillar 2 and mirror based fiber optica 3, as shown in " the angle cutting " in Fig. 1.
This utility model does not relate to the part prior art that maybe can adopt all same as the prior art and is realized.
Claims (6)
1. an OCT miniature imaging is popped one's head in, and comprises optical fiber (1) and lens pillar (2), and one end of lens pillar (2) is connected with optical fiber (1), it is characterized in that the other end of described lens pillar (2) is connected with the mirror based fiber optica (3) that one section of section is D type.
2. OCT miniature imaging according to claim 1 is popped one's head in, and it is characterized in that described optical fiber (1), lens pillar (2) and mirror based fiber optica (3) faying face are each other the inclined-plane being not equal to 90 degree with their axis angle.
3. OCT miniature imaging according to claim 1 and 2 is popped one's head in, and to it is characterized in that on the reflecting surface that described mirror based fiber optica (3) does not contact with lens pillar (2) plated film or utilizes total internal reflection principle to carry out the refraction of light.
4. OCT miniature imaging according to claim 1 and 2 is popped one's head in, and it is characterized in that described optical fiber (1) is single-mode fiber or multimode fibre.
5. OCT miniature imaging according to claim 1 and 2 is popped one's head in, and it is characterized in that described optical fiber (1), is interconnected by the mode of gluing together or weld between lens pillar (2) and mirror based fiber optica (3).
6. OCT miniature imaging according to claim 1 and 2 is popped one's head in, and it is characterized in that connection inclined-plane not plated film or the plating anti-reflection film of described optical fiber (1), lens pillar (2) and mirror based fiber optica (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520267841.9U CN204636275U (en) | 2015-04-29 | 2015-04-29 | OCT miniature imaging is popped one's head in |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520267841.9U CN204636275U (en) | 2015-04-29 | 2015-04-29 | OCT miniature imaging is popped one's head in |
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| CN204636275U true CN204636275U (en) | 2015-09-16 |
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| CN201520267841.9U Expired - Fee Related CN204636275U (en) | 2015-04-29 | 2015-04-29 | OCT miniature imaging is popped one's head in |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106510607A (en) * | 2016-12-07 | 2017-03-22 | 上海澳华光电内窥镜有限公司 | Optimal illuminating system of endoscope and electronic endoscope |
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2015
- 2015-04-29 CN CN201520267841.9U patent/CN204636275U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106510607A (en) * | 2016-12-07 | 2017-03-22 | 上海澳华光电内窥镜有限公司 | Optimal illuminating system of endoscope and electronic endoscope |
| CN106510607B (en) * | 2016-12-07 | 2019-10-01 | 上海澳华光电内窥镜有限公司 | A kind of endoscope illumination optical system and fujinon electronic video endoscope |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190215 Address after: 210032 10/F, Block E, Phase II, Zhongdan Eco-life Science Industrial Park, 3-1 Xinjinhu Road, Jiangbei New District, Nanjing City, Jiangsu Province Co-patentee after: General Hospital of the Eastern War Zone of the Chinese People's Liberation Army Patentee after: NANJING WOFUMAN MEDICAL TECHNOLOGY CO., LTD. Address before: 210001 Two Building No. 30 Yanghu Lane, Qinhuai District, Nanjing City, Jiangsu Province Patentee before: NANJING WOFUMAN MEDICAL TECHNOLOGY CO., LTD. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20190429 |
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| CF01 | Termination of patent right due to non-payment of annual fee |