CN110793941A - System for intelligent resolution laser optical tomography method - Google Patents
System for intelligent resolution laser optical tomography method Download PDFInfo
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- CN110793941A CN110793941A CN201910959472.2A CN201910959472A CN110793941A CN 110793941 A CN110793941 A CN 110793941A CN 201910959472 A CN201910959472 A CN 201910959472A CN 110793941 A CN110793941 A CN 110793941A
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- coupler
- circulator
- balanced detector
- acquisition card
- wavelength division
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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
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/45—Refractivity; Phase-affecting properties, e.g. optical path length using interferometric methods; using Schlieren methods
Abstract
The invention discloses a system of an intelligent resolution laser optical tomography method in the technical field of optical coherence tomography, which comprises a light source, a first coupler, a second coupler, a third coupler, a first balance detector, a circulator, a second balance detector, a wavelength division multiplexer, a fourth coupler, a reference mirror, a two-dimensional scanning galvanometer, a focusing mirror, a sample to be detected, an acquisition card and a computer, wherein the input end of the first coupler is connected with the light source, the first coupler is respectively connected with the second coupler and the circulator, the second coupler is connected with the third coupler, the third coupler is connected with the first balance detector, the first balance detector is connected with the acquisition card, the circulator is respectively connected with the second balance detector and the fourth coupler, the wavelength division multiplexer is connected with the fourth coupler, the system utilizes effective signals excluded in the original resampling method, the energy utilization rate and the image signal-to-noise ratio of the sample interference signal are improved, and the resampling precision is high.
Description
Technical Field
The invention discloses a system of an intelligent resolution laser optical tomography method, and particularly relates to the technical field of optical coherence tomography.
Background
In a multi-faceted rotating mirror laser frequency sweep optical coherence tomography system, the laser has the problems of output spectrum dislocation and frequency sweep range fluctuation. In the existing resampling method, the cross-correlation operation is generally used for correcting the spectrum dislocation, and the interception in a large range is carried out, so that the consistency of the sweep frequency range is ensured, but the reduction of the imaging signal-to-noise ratio and the resolution ratio is caused.
Disclosure of Invention
The present invention is directed to a system for intelligently resolving laser optical tomography, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a system for intelligently resolving laser optical tomography comprises a light source, a first coupler, a second coupler, a third coupler, a first balanced detector, a circulator, a second balanced detector, a wavelength division multiplexer, a fourth coupler, a reference mirror, a two-dimensional scanning galvanometer, a focusing mirror, a sample to be detected, a collecting card and a computer, the input end of the first coupler is connected with the light source, the first coupler is respectively connected with the second coupler and the circulator, the second coupler is connected with a third coupler, the third coupler is connected with a first balanced detector, the first balance detector is connected with the acquisition card, the circulator is respectively connected with the second balance detector and the fourth coupler, the second balanced detector is respectively connected with the acquisition card and the wavelength division multiplexer, the wavelength division multiplexer is connected with the fourth coupler, and the acquisition card is connected with the computer.
Preferably, the first coupler is a 95/5 type coupler.
Preferably, the second coupler, the third coupler and the fourth coupler are 50/50 type couplers.
Preferably, the acquisition card respectively acquires an MZI interference signal transmitted by the first balanced detector and an MSI interference signal transmitted by the second balanced detector.
Compared with the prior art, the invention has the beneficial effects that: the system utilizes the effective signals excluded in the original resampling method, improves the energy utilization rate and the image signal-to-noise ratio of the sample interference signals, and has higher resampling precision.
Drawings
FIG. 1 is a schematic diagram of the system structure of the optical tomography method of the present invention.
In the figure: the device comprises a light source 1, a first coupler 2, a second coupler 3, a third coupler 4, a first balance detector 5, a circulator 6, a second balance detector 7, a wavelength division multiplexer 8, a fourth coupler 9, a reference mirror 10, a two-dimensional scanning galvanometer 11, a focusing mirror 12, a sample to be detected 13, a collection card 14 and a computer 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a system for intelligently resolving laser optical tomography, including a light source 1, a first coupler 2, a second coupler 3, a third coupler 4, a first balanced detector 5, a circulator 6, a second balanced detector 7, a wavelength division multiplexer 8, a fourth coupler 9, a reference mirror 10, a two-dimensional scanning galvanometer 11, a focusing mirror 12, a sample to be measured 13, an acquisition card 14 and a computer 15, wherein an input end of the first coupler 2 is connected to the light source 1, the first coupler 2 is connected to the second coupler 3 and the circulator 6, the second coupler 3 is connected to the third coupler 4, the third coupler 4 is connected to the first balanced detector 5, the first balanced detector 5 is connected to the acquisition card 14, the circulator 6 is connected to the second balanced detector 7 and the fourth coupler 9, the second balanced detector 7 is connected to the acquisition card 14 and the wavelength division multiplexer 8, the wavelength division multiplexer 8 is connected with the fourth coupler 9, and the acquisition card 14 is connected with the computer 15.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A system for intelligently resolving laser optical tomography imaging method is characterized in that: the device comprises a light source (1), a first coupler (2), a second coupler (3), a third coupler (4), a first balanced detector (5), a circulator (6), a second balanced detector (7), a wavelength division multiplexer (8), a fourth coupler (9), a reference mirror (10), a two-dimensional scanning galvanometer (11), a focusing mirror (12), a sample to be detected (13), an acquisition card (14) and a computer (15), wherein the input end of the first coupler (2) is connected with the light source (1), the first coupler (2) is respectively connected with the second coupler (3) and the circulator (6), the second coupler (3) is connected with the third coupler (4), the third coupler (4) is connected with the first balanced detector (5), the first balanced detector (5) is connected with the acquisition card (14), and the circulator (6) is respectively connected with the second balanced detector (7) and the fourth coupler (9), the second balanced detector (7) is respectively connected with an acquisition card (14) and a wavelength division multiplexer (8), the wavelength division multiplexer (8) is connected with a fourth coupler (9), and the acquisition card (14) is connected with a computer (15).
2. The system of claim 1, wherein the system comprises: the first coupler (2) adopts a coupler of 95/5 model.
3. The system of claim 1, wherein the system comprises: the second coupler (3), the third coupler (4) and the fourth coupler (9) are all 50/50 type couplers.
4. The system of claim 1, wherein the system comprises: the acquisition card (14) is used for respectively acquiring MZI interference signals transmitted by the first balanced detector and MSI interference signals transmitted by the second balanced detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910959472.2A CN110793941A (en) | 2019-10-10 | 2019-10-10 | System for intelligent resolution laser optical tomography method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910959472.2A CN110793941A (en) | 2019-10-10 | 2019-10-10 | System for intelligent resolution laser optical tomography method |
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| CN110793941A true CN110793941A (en) | 2020-02-14 |
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| CN201910959472.2A Pending CN110793941A (en) | 2019-10-10 | 2019-10-10 | System for intelligent resolution laser optical tomography method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111436907A (en) * | 2020-04-17 | 2020-07-24 | 佛山科学技术学院 | Cerebrovascular imaging device based on sweep frequency adaptive optics OCT |
Citations (5)
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|---|---|---|---|---|
| US20080198367A1 (en) * | 2006-07-24 | 2008-08-21 | Shoude Chang | Interferometric System for Complex Image Extraction |
| EP2485009A1 (en) * | 2011-02-04 | 2012-08-08 | Haag-Streit Ag | Frequency domain OCT |
| CN102151121B (en) * | 2011-01-28 | 2012-08-15 | 浙江大学 | Method and system for calibrating spectrum based on interference spectrum phase information |
| CN104718673A (en) * | 2012-07-27 | 2015-06-17 | 统雷有限公司 | Tunable short cavity laser sensor |
| CN109758119A (en) * | 2019-01-28 | 2019-05-17 | 广东唯仁医疗科技有限公司 | A kind of tumor-microvessel image processing apparatus |
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2019
- 2019-10-10 CN CN201910959472.2A patent/CN110793941A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080198367A1 (en) * | 2006-07-24 | 2008-08-21 | Shoude Chang | Interferometric System for Complex Image Extraction |
| CN102151121B (en) * | 2011-01-28 | 2012-08-15 | 浙江大学 | Method and system for calibrating spectrum based on interference spectrum phase information |
| EP2485009A1 (en) * | 2011-02-04 | 2012-08-08 | Haag-Streit Ag | Frequency domain OCT |
| CN104718673A (en) * | 2012-07-27 | 2015-06-17 | 统雷有限公司 | Tunable short cavity laser sensor |
| CN109758119A (en) * | 2019-01-28 | 2019-05-17 | 广东唯仁医疗科技有限公司 | A kind of tumor-microvessel image processing apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111436907A (en) * | 2020-04-17 | 2020-07-24 | 佛山科学技术学院 | Cerebrovascular imaging device based on sweep frequency adaptive optics OCT |
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Application publication date: 20200214 |