CN103674840A - Method and system for calibrating scanning device through debugging cylinder device and debugging cylinder device - Google Patents
Method and system for calibrating scanning device through debugging cylinder device and debugging cylinder device Download PDFInfo
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Abstract
The invention belongs to the field of optoelectronics and discloses a method for calibrating a scanning device by utilizing a debugging cylinder device. The method comprises the following steps: calibrating an X-direction scanning part and/or a Y-direction scanning component. According to the X-direction scanning part, the X-direction scanning part scans a raised strip, an optical coherence tomography (OCT) imaging system acquires an OCT tomography of a section of the raised strip and takes a calibrated rotary center position X1 as reference, so that an actual scanning area center line of the X-direction scanning part is coincided with a primary optical axis of a light path; for the Y-direction scanning component, the method comprises the following steps: matching a second Y-direction scanning part with a first Y-direction scanning part to scan the raised strip, and acquiring the section of the raised strip and forming the OCT tomography images through the OCT imaging system; determining an accurate scanning center position Y22 of the second Y-direction scanning part; determining an accurate scanning center position Y11 of the first Y-direction scanning part, so that the center line of the Y-direction scanning area is coincided with the primary optical axis of the light path. According to the method, the scanning device is simple and rapid in calibration process and high in debugging precision.
Description
Technical field
The invention belongs to photoelectricity field, specially refer to a kind of system of utilizing method and the debugging cartridge of debugging cartridge calibration scan device and including this debugging cylinder.
Background technology
For OCT system, when sample is carried out to scanning imagery, can adopt multiple technologies to realize scanning process, as galvanometer rotary scanning, driven by motor rotation sweep or by certain physical construction and adopt stepper motor to drive to realize scanning.No matter adopt which kind of Scan Architecture device, when carrying out light path center adjustment, adopt artificial judgment more, whether light path aligns, whether contraposition of center.But when artificial judgment regulates, the not objectively shortcomings that exist, cannot accurately carry out center contraposition more.And operation often needs repeatedly constantly to test, and could determine the rotation center position of scanister.This point is for light path commissioning engineer, and regulation scheme is convenient, fast not and objective.
And instrument is loaded onto after shell, and light path is all sealed in the enclosure.Once find not timing of light path, carry out optical path adjusting after often shell is taken in employing apart.This adjusting work needs the professional customer service slip-stick artist of producer to operate more.Thereby for user, light path calibration operation more cannot be realized voluntarily.
Summary of the invention
The invention provides a kind of utilization debugs method, the debugging cartridge of cylinder debugging scanister and debugging cylinder is used in to the system of debugging in light path, be intended to solve in the process of debugging scanister directions X scanned copy and Y-direction scan components the problem that the scanning area center line of directions X scanned copy and the scanning area center line of Y-direction scan components cannot overlap with system light path primary optical axis.
Technical scheme of the present invention is such:
The method of debugging cartridge calibration scan device, comprises the directions X scanned copy calibration of described scanister and/or Y-direction scan components is calibrated;
It is described that to directions X scanned copy, calibration comprises:
Raised item in described directions X scanned copy scanning debugging cartridge; OCT imaging system gathers an OCT faulted scanning pattern of described raised item, the center position X1 of the described directions X scanned copy that described in an OCT faulted scanning pattern, the first row pixel L0 at a seamed edge line place of raised item is corresponding described in computer-made decision;
Computing machine is made as its center of rotation parameter by the center position X1 of described directions X scanned copy; Described directions X scanned copy rotates with described center position X1 scanning, and its physical scan area center line is overlapped with the primary optical axis of light path;
Described to the calibration of Y-direction scan components, comprising:
Define described Y-direction scan components and comprise the first Y-direction scanned copy and/or the second Y-direction scanned copy;
If described Y-direction scan components comprises the first Y-direction scanned copy and the second Y-direction scanned copy:
Described the second Y-direction scanned copy scans described raised item, determines the position Y22 of its accurate scanning center, and the physical scan area center line of described the second Y-direction scanned copy is overlapped with the primary optical axis of light path;
Described the first Y-direction scanned copy scans described raised item with preliminary sweep center of rotation Y10, determine the position Y11 of its accurate scanning center, and rotate with the described position Y11 of accurate scanning center scanning, the physical scan area center line of described the first Y-direction scanned copy is overlapped with the primary optical axis of light path;
If described Y-direction scan components only includes the first Y-direction scanned copy or only includes the second Y-direction scanned copy:
Described to the first Y-direction scanned copy or the second Y-direction scanned copy calibration steps with identical to described directions X scanned copy calibration steps.
Further: definite method of the center position X1 of described directions X scanned copy is: according to formula
Wherein, N is an OCT faulted scanning pattern Width pixel count, N1 is the pixel count between the centre line L 1 of an OCT faulted scanning pattern and the first row pixel L0 at a seamed edge line place of raised item, X0 is the initial rotation center of directions X scanned copy, Xmax is the directions X scanister scanning total angle of rotation, and X1 is the center position after the calibration of directions X scanned copy; N, X0, Xmax are systemic presupposition data, and N1 is calculated and drawn by computing machine, by above formula, just can obtain X1.
Further: the raised item in described directions X scanned copy scans described debugging cartridge, OCT imaging system gathers the OCT faulted scanning pattern of described raised item, before the center position X1 step of the described directions X scanned copy that described in computer-made decision, the first row pixel L0 at a seamed edge line place of OCT faulted scanning pattern protrusions bar is corresponding, also comprise:
According to light path, set gradually debugging cartridge, probe light path system and OCT imaging system; Described probe light path system comprises described directions X scanned copy and described Y-direction scan components.
Further: describedly according to light path, set gradually debugging cartridge, specifically comprise:
Described raised item is placed on to debugging cylinder bottom inside and makes a wherein seamed edge line of described raised item outstanding towards described debugging cylinder bottom inside, make described raised item just meet system light beam coherence distance to the distance of described probe light path system simultaneously;
When to described directions X scanned copy calibration debugging, described seamed edge line all keeps vertical with the rotation axis of described directions X scanned copy and the rotation axis of described the first Y-direction scanned copy; When to described Y-direction scan components calibration debugging, the equal keeping parallelism of turning axle of the rotation axis of described seamed edge line and described the first Y-direction scanned copy and/or the second Y-direction scanned copy;
By debugging cylinder lens, press Jing Quan to be successively set in debugging cylinder inside circumference, and the position that makes the through hole on described pressure Jing Quan is just and the position consistency of the convergent point of scanning light beam center line.
Further: described to directions X scanned copy calibration steps before, also comprise:
Described the first Y-direction scanned copy is gone to its rotation center position Y10 and/or the rotating mechanism of described the second Y-direction scanned copy is gone to its rotation center Y20.
Further: described to Y-direction scan components calibration steps before, can also comprise the described calibration to directions X scanned copy; Described to directions X scanned copy calibration steps before, can also comprise the described calibration to Y-direction scan components.
Further: described the second Y-direction scanned copy scans described raised item, determine in the position Y22 of its accurate scanning center, described scanning is accurately scanning after first coarse scan, comprising:
The second Y-direction scanned copy slowly scans described raised item with larger or less rotation stepping angle;
Described OCT imaging system gathers an OCT tomoscan picture group of described raised item;
Computing machine is found out the strongest width figure of overall signal in a described OCT tomoscan picture group, determines that described the second Y-direction scanned copy roughly scans center position Y21;
Described the second Y-direction scanned copy coordinates the first Y-direction scanned copy to described raised item fine scanning with the described center position Y21 that roughly scans;
Described OCT imaging system gathers the 2nd OCT tomoscan picture group of described raised item again;
Computing machine is found out the sequence number of the width figure that in described the 2nd OCT tomoscan picture group, overall signal is the strongest, determines the position Y22 of accurate scanning center of the second Y-direction scanned copy.
Further: described the first Y-direction scanned copy scans described raised item with preliminary sweep center of rotation Y10, determine the position Y11 of its accurate scanning center, make the step that the physical scan area center line of described the first Y-direction scanned copy overlaps with the primary optical axis of light path be:
Described the first Y-direction scanned copy scans described raised item with preliminary sweep center of rotation Y10;
OCT imaging system gathers the 2nd OCT faulted scanning pattern of described raised item;
The position Y11 of accurate scanning center of corresponding described the first Y-direction scanned copy of the secondary series pixel L0 ' at a seamed edge line place of the 2nd OCT faulted scanning pattern protrusions bar described in computer-made decision;
Computing machine is made as the position Y11 of accurate scanning center of the first Y-direction scanned copy the center of rotation parameter of the first Y-direction scanned copy, described the first Y-direction scanned copy rotates with the described position Y11 of accurate scanning center scanning, and the physical scan area center line of described the first Y-direction scanned copy is overlapped with the primary optical axis of light path.
Further: the method that computing machine is found out the width figure that in a described OCT tomoscan picture group or the 2nd OCT tomoscan picture group, overall signal is the strongest is:
When light beam is along primary optical axis incident, through the turned position of described raised item surface reflection and the second Y-direction scanned copy, during the closer to the position Y22 of its accurate scanning center, the image of OCT imaging system collection is a strongest width figure in a described OCT tomoscan picture group or the 2nd OCT tomoscan picture group.
Further: definite method of the position Y11 of accurate scanning center that roughly scans center position Y21 and the first Y-direction scanned copy of the position Y22 of accurate scanning center of described the second Y-direction scanned copy, the second Y-direction scanned copy is equal identical with described definite method to the center position X1 of directions X scanned copy.
A debugging cartridge, comprising: the debugging cylinder of hollow and be arranged on the raised item of its bottom inside, along a crest line of described raised item to projecting inward; Described raised item meets system light beam coherence distance just to the distance of described probe light path system.
Further: also comprise and be arranged on from inside to outside the debugging cylinder lens on described debugging cylinder inner side and press Jing Quan; In the middle of described pressure mirror circle, offer the through hole passing through for light source; The position of described through hole just and the position consistency of the convergent point of scanning light beam center line.
Further: the section perpendicular to a crest line of described raised item is at least a kind of of V-arrangement, triangle or arch.
A system of debugging scanister, comprising: the debugging cartridge setting gradually according to light path, probe light path system and OCT imaging system, described probe light path system comprises: directions X scanned copy and/or Y-direction scan components.
Further: described Y-direction scan components comprises the first Y-direction scanned copy and/or the second Y-direction scanned copy.
Beneficial effect of the present invention: the raised item of directions X scanned copy scanning debugging cartridge, OCT imaging system gathers an OCT faulted scanning pattern of raised item section, judges the center position X1 of the corresponding described directions X scanned copy of first row pixel L0 at a described place, OCT faulted scanning pattern protrusions bar summit; Directions X scanned copy scans with center position X1, thereby its physical scan area center line is overlapped with the primary optical axis of light path;
Y-direction scan components comprises the first Y-direction scanned copy and/or the second Y-direction scanned copy; If comprise the first Y-direction scanned copy and the second Y-direction scanned copy, debugging cartridge to the calibration steps of Y-direction scan components is: the second Y-direction scanned copy coordinates the first Y-direction scanned copy first to raised item coarse scanning, OCT imaging system gathers the first tomoscan picture group of raised item, the signal of the width figure that computer-made decision overall signal is the strongest, determines roughly scanning center position Y21 of the second Y-direction scanned copy; The second Y-direction scanned copy coordinates the first Y-direction scanned copy to the scanning of raised item essence again, OCT imaging system gathers the second tomoscan picture group of raised item, judge the signal of the width figure that overall signal is the strongest, determine the second position Y22 of the accurate scanning center of Y-direction scanned copy, the physical scan area center line of the second Y-direction scanned copy is overlapped with the primary optical axis of light path; On the basis that the first Y-direction scanned copy is confirmed in the accurate scan angle of the second Y-direction scanned copy, again raised item is scanned, now determine the position Y11 of accurate scanning center of the first Y-direction scanned copy, with directions X scanned copy is determined to its sector scanning center line is identical with light path primary optical axis coincidence method, completes the calibration of Y-direction scan components and debugging; If Y scan components only includes the first Y-direction scanned copy or the second Y-direction scanned copy, utilize the method for a debugging calibration of the physical scan area center line to it with identical to the calibration steps of directions X scanned copy.
Therefore, utilize the adjusting of debugging cartridge to the directions X scanned copy of scanister and/or Y-direction scan components, can be achieved as follows effect: 1,, without taking shell apart, just can realize the calibration to them, thereby make debugging work simple, quick; 2, debug process is simple, even if do not possess the personnel of professional knowledge, does not utilize the method and equipment debugging scanister, also can debug out satisfied result.
Accompanying drawing explanation
The process flow diagram that Fig. 1 debugs directions X scanned copy for debugging cartridge;
The process flow diagram that Fig. 2 debugs including the Y-direction scan components of the first Y-direction scanned copy and the second Y-direction scanned copy for debugging cartridge;
Fig. 3 is the particular flow sheet of step S202 in Fig. 2;
Fig. 4 is system light path figure of the present invention;
Fig. 5 is the inner structure schematic diagram of the debugging cartridge 300 in Fig. 4;
Fig. 6 is the view of analysing and observe along A-A in Fig. 4;
Fig. 7 debugs cartridge raised item before directions X scanned copy, the debugging of Y-direction scan components not to be departed to the RC schematic diagram of OCT image in the present invention;
Fig. 8 debugs cartridge directions X scanned copy, Y-direction scan components are debugged to rear raised item in the RC schematic diagram of OCT image in the present invention.
Fig. 9 is the schematic perspective view of raised item.
Figure 10 is the situation that the scanning area center line of the first Y-direction scanned copy 202 and the scanning area center line of the second Y-direction scanned copy 204 all overlap with system light path primary optical axis.
Figure 11 is that scanning area center line and the system light path primary optical axis of the first Y-direction scanned copy 202 do not overlap but the scanning area center line of the second Y-direction scanned copy 204 and the situation that system light path primary optical axis overlaps.
Figure 12 is all the get along well situation of position of system light path primary optical axis of the scanning area center line of the first Y-direction scanned copy 202 and the scanning area center line of the second Y-direction scanned copy 204.
Wherein, in Fig. 4 and Fig. 5, each part sequence number and corresponding part name are respectively: 100, OCT imaging system; 200, probe light path system; 201, directions X scanned copy; 202, the first Y-direction scanned copy; 204, the second Y-direction scanned copy; 300, debugging cartridge; 301, debugging cylinder; 301 ', the imaging of debugging cylinder bottom inside in OCT image; 302, press Jing Quan; 3021, through hole; 303, debugging cylinder lens; 304, raised item; 3041, seamed edge line; 304 ', the imaging of raised item 304 in OCT image; 3041 ', seamed edge line 3041 imaging in OCT image.
Embodiment
In order to make technical matters to be solved by this invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
embodiment 1: the calibration to directions X scanned copy 201
With reference to figure 1 and Fig. 6, the process of the calibration of 300 pairs of directions X scanned copies 201 of debugging cartridge is as follows:
Step S102: the raised item in described directions X scanned copy scanning debugging cartridge; OCT imaging system gathers an OCT faulted scanning pattern of described raised item, the center position X1 of the corresponding described directions X scanned copy of the first row pixel L0 at a seamed edge line place of an OCT faulted scanning pattern protrusions bar described in computer-made decision;
Particularly, when the raised item in 201 pairs of debugging cartridges of directions X scanned copy scans, OCT imaging system 100 scanning raised items 304, obtain an OCT faulted scanning pattern.Directions X scanned copy is when a certain position, and OCT imaging system 100 gathers the image of a line of raised item 304.When directions X scanned copy forwards the next position to, OCT imaging system 100 gathers the image of raised item 304 another lines again.So repeatedly, directions X scanned copy forwards one-period to, and OCT imaging system 100 just collects the image of the width OCT faulted scanning pattern that raised item 304 is complete.
For determining of the center position X1 of directions X scanned copy in this step; can there is accomplished in many ways; the technical program has only exemplified an embodiment who realizes its object, but for realize the technical scheme of same object with other means, also belongs to the row of the protection domain of present patent application.
With reference to figure 7, the one OCT faulted scanning pattern Width pixel count is N, the directions X vibration mirror scanning total angle of rotation is Xmax, the center line of image is L1, a seamed edge line 3041(of raised item 304 is shown in Fig. 9) imaging 3041 ' in an OCT faulted scanning pattern, L0 is the row pixel through 3041 ' place, the initial rotation center of directions X scanned copy 201 is in the drawings in X0 '. as seen from Figure 7, center of rotation after the calibration of X0 ' and directions X scanned copy 201 position X1 ' in the drawings does not overlap, and calibration after center position X1 be the center position of system, this center position makes directions X scanning area center line overlap with system primary optical axis.The object of debugging cartridge 300 calibration directions X scanned copies 201 is exactly in order to make initial rotation center X0 be calibrated to X1 position.If the pixel count in an OCT faulted scanning pattern between X1 and X0 is N1, Xmax is the directions X vibration mirror scanning total angle of rotation.Wherein N, X0, Xmax are systemic presupposition data, and N1 is calculated and drawn by computing machine,, according to formula
obtain
thereby the center position X1 that determines directions X scanned copy 201, then enters step S103.
Step S103: computing machine is made as the center position X1 of described directions X scanned copy the center of rotation parameter of described directions X scanned copy; Described directions X scanned copy rotates with described center position X1 scanning, and its physical scan area center line is overlapped with the primary optical axis of light path.。
Particularly, when directions X scanned copy 201 determines after its center position X1, it has obtained image as shown in Figure 8 as reference rotational, and the physical scan area centre line L 1 of the OCT faulted scanning pattern of raised item 304 and the primary optical axis L2(of light path system are shown in Fig. 8, Fig. 4) overlap.That is to say, the rotation center of directions X scanned copy 201 has been calibrated.
With reference to figure 4, before calibrating with 300 pairs of directions X scanned copies 201 of debugging cartridge, also comprise step S101: according to light path, set gradually debugging cartridge 300, probe light path system 200 and OCT imaging system 100.Wherein, probe light path system 200 has comprised directions X scanned copy 201 and Y-direction scan components.Y-direction scan components comprises the first Y-direction scanned copy 202 and/or the second Y-direction scanned copy 204, that is to say, Y-direction scan components can only include the first Y-direction scanned copy 202, also can only include the second Y-direction scanned copy 204; Can also comprise the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204 simultaneously.What Fig. 4 showed is the situation that simultaneously comprises the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204, and it is not shown to only include the situation of the first Y-direction scanned copy 202 or the second Y-direction scanned copy 204.
Before step S101,, before directions X scanned copy 201 being adjusted to calibration, also need to carry out following steps:
Described Y-direction scan components is rotated to its rotation center position;
Particularly, described the first Y-direction scanned copy 202 is gone to its rotation center position Y10 and/or the rotating mechanism of the second Y-direction scanned copy 204 is gone to its rotation center Y20, and this is because Y-direction scan components comprises the situation that has the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204 and only include the first Y-direction scanned copy 202 or the second Y-direction scanned copy 204 simultaneously.
Before to directions X scanned copy calibration steps, can also comprise the described calibration to Y-direction scan components, can certainly be not to the calibration of Y-direction scan components, this does not affect calibrates directions X scanned copy.
When the first Y-direction scanned copy 202 being gone to rotation center position Y10 and/or the second Y-direction scanned copy 204 is gone to rotation center position Y20, now no matter whether Y10 and/or Y20 be strictly in design attitude, and the debug results of 300 pairs of directions X scanned copies 201 of debugging cartridge does not exert an influence.Even if " drift " occurred the rotating mechanism of the first Y-direction scanned copy 202 and/or the second Y-direction scanned copy 204, debugging cartridge 300 also can be calibrated directions X scanned copy 201 center null position.
When with debugging cartridge 300 debugging directions X scanned copy, the through hole 3021(of pressure mirror circle 302 of debugging cartridge 300 is shown in Fig. 5) position just and the position consistency of the convergent point of scanning light beam center line, raised item 304 meets system light beam coherence distance just with the distance of probe light path system 200, to meet the needs of OCT to raised item 304 scanning imageries.
With reference to figure 5, Fig. 6 and Fig. 9, in the process of utilizing 300 pairs of directions X scanned copies 201 of debugging cartridge to calibrate, raised item 304 need be arranged in the plane of debugging cartridge 300 bottom inside.Raised item 304 is designed to strip.When raised item 304 being arranged on to debugging cartridge 300 bottom inside, must guarantee to give prominence to towards debugging cartridge 300 bottom inside along its a wherein seamed edge line 3041, the object of doing is like this in order to guarantee that scanning light beam can scan from the nearest seamed edge line of raised item 304.Should guarantee that raised item 304 meets the requirement of system light beam coherence distance to the distance of probe light path system 200, to meet OCT imaging needs simultaneously.
Particularly, can be all passable apparently higher than the figure on other limits for triangle (seeing Fig. 6, Fig. 9), V-arrangement and every its seamed edge perpendicular to the shape of the section of a seamed edge line 3041 of raised item 304.In addition, in the process of utilizing 300 pairs of directions X scanned copies 201 of debugging cartridge to calibrate, the seamed edge line of raised item 304 (for example seamed edge line 3041) is vertical with the rotation axis of directions X scanned copy 201, simultaneously also vertical with the rotation axis of the first Y-direction scanned copy 202.
Because debugging cartridge 300 protrusions bars 304 adopt stripe design, even if this design departs from the preliminary sweep center of rotation Y10 of the first Y-direction scanned copy 202 and the preliminary sweep center of rotation Y20 of the second Y-direction scanned copy 204 slightly, but when 100 pairs of raised items of OCT imaging system 304 carry out directions X scanning imagery, gained OCT faultage image can not change.Therefore, in aforementioned, while judging the center position X1 of directions X scanned copy 201, the rotation center Y20 of the rotation center Y10 of the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204 departs from slightly, irrelevant to the calibration of scanning center's parameter of directions X scanned copy 201.
Debugging cartridge 300 can be to 201 calibrations of directions X scanned copy.In addition, it can also be to Y-direction scan components calibration debugging.That is to say, debugging cartridge 300 not only can, to 201 calibrations of directions X scanned copy, also can be calibrated Y-direction scan components; Both can distinguish separately directions X scanned copy 201 and Y-direction scan components had been calibrated, also can first to directions X scanned copy 201 is rear, to Y-direction scan components, calibrate.
As previously mentioned, Y-direction scan components comprises the first Y-direction scanned copy 202 and/or the second Y-direction scanned copy 204.
In addition, debugging cartridge 300 is before to the calibration of the rotating mechanism of the first Y-direction scanned copy 202 and/or the second Y-direction scanned copy 204, calibration that can also be to directions X scanned copy 201, certainly, also can not comprise the calibration of 300 pairs of directions X scanned copies 201 of debugging cartridge.These two kinds of results are on not impact of the calibration of the rotating mechanism of the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204.
embodiment 2:the calibration of 300 pairs of Y-direction scan components of debugging cartridge, now Y-direction scan components comprises the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204.
With reference to figures 10 to Figure 12.Figure 10 is the situation that the scanning area center line of the first Y-direction scanned copy 202 and the scanning area center line of the second Y-direction scanned copy 204 all overlap with system light path primary optical axis.This kind of situation is optimal situation, also be that debugging cartridge 300 debugging Y-direction scan components (comprising the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204) are wished the object reaching, now without the scanning center's debugging calibration to the scanning center of the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204.Figure 11 is that scanning area center line and the system light path primary optical axis of the first Y-direction scanned copy 202 do not overlap but the scanning area center line of the second Y-direction scanned copy 204 and the situation that system light path primary optical axis overlaps, in this case, illuminating source still can focus on the O point on system primary optical axis.The through hole 3021(of pressure mirror circle 302 that wherein O point is debugging cartridge 300 is shown in Fig. 5) center, and O point just with the position consistency of the convergent point of the scanning light beam center line of envisioning.With reference to Figure 12, Figure 12 is all the get along well situation of position of system light path primary optical axis of the scanning area center line of the first Y-direction scanned copy 202 and the scanning area center line of the second Y-direction scanned copy 204.Now, the focal spot of illuminating source is in P point, and P point is not on system primary optical axis, it is the not center of the through hole 3021 of the pressure mirror circle 302 in debugging cartridge 300 of P point, now light beam can be blocked by through hole 3021 and incident debugging cartridge 300 entirely, causes the signal weaker of OCT image of the raised item of gained.By the scanning center of the scanning center of the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204 is calibrated, their physical scan area center line is overlapped with system light path primary optical axis, reach the effect the same with Figure 10.The described object to the calibration of Y-direction scan components of this patent, is exactly mainly the situation for Figure 12, needs the scanning center's calibration to the scanning center of the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204 simultaneously.
Utilize the calibration of the rotating mechanism of 300 pairs of Y-direction scan components of debugging cartridge, slightly different compared with the calibration steps of directions X scanned copy 201.
By light path principle, known, light beam through the minute surface foveal reflex of directions X scanned copy 201 behind the minute surface center of the first Y-direction scanned copy 202, light beam is through the mirror-reflection of the first Y-direction scanned copy 202, through relay lens 203, after the reflection of the second Y-direction scanned copy 204, if light beam can continue along the central axis of system light path design, the rotational angle of the rotating mechanism of the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204 is unique, and can determine.By the known employing debugging of this principle cartridge 300, just can realize the calibration to the rotating mechanism of the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204.
Before to the calibration of the rotating mechanism of the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204, also need to carry out following steps:
Allow directions X scanned copy 201 go to rotation center X0, and keep motionless; If directions X has carried out scan calibration, can go to directions X scanned copy center position X1;
The raised item 304 of debugging cartridge 300 is arranged to and the rotation axis of the first Y-direction scanned copy 202 and the equal keeping parallelism of turning axle of the second Y-direction scanned copy 204.
Further, before to the calibration of the rotating mechanism of the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204, also need the position of the through hole of the pressure mirror circle 302 of debugging cartridge 300 to be arranged to just and the position consistency of the convergent point of scanning light beam center line, raised item 304 still meets system light beam coherence distance just with the distance of probe, to meet the needs of OCT to raised item scanning imagery.Requiring when this point and 201 calibration of 300 pairs of directions X scanned copies of debugging cartridge is identical.
Lower mask body is set forth the calibration process of the rotating mechanism of debugging 300 pairs of the first Y-direction scanned copies 202 of cartridge and the second Y-direction scanned copy 204.
With reference to figure 2 and in conjunction with Fig. 4,300 pairs of Y-direction scan components calibration process concrete steps of debugging cartridge are as follows:
S201: the part that defines described Y-direction scan components is respectively the first Y-direction scanned copy and the second Y-direction scanned copy;
S202: described the second Y-direction scanned copy scans described raised item, determines the position Y22 of its accurate scanning center, and the physical scan area center line of described the second Y-direction scanned copy is overlapped with the primary optical axis of light path;
S203: described the first Y-direction scanned copy scans described raised item with preliminary sweep center of rotation Y10, determines the position Y11 of its accurate scanning center, and the physical scan area center line of described the first Y-direction scanned copy is overlapped with the primary optical axis of light path;
Particularly, for S201, the object of doing is like this in order more clearly to express the meaning of present patent application file in the following description, and therefore, artificial is the first Y-direction scanned copy and the second Y-direction scanned copy by the Part Definition of Y-direction scan components.
Particularly, for S202, the accurate scan mode that can realize 204 pairs of raised items 304 of the second Y-direction scanned copy has multiple, and in the present embodiment, scan mode is first coarse scan, rear accurate scanning.Although the present embodiment has only exemplified after first coarse scan the accurately scan pattern of scanning, as long as can reach same object for the scan mode of other modes, also belong to protection scope of the present invention.First coarse scan, the step of rear accurate scanning is specially:
S301: the second Y-direction scanned copy slowly scans described raised item with larger or less rotation stepping angle;
S302: described OCT imaging system gathers an OCT tomoscan picture group of described raised item;
S303: computing machine is found out the strongest width figure of overall signal in a described OCT tomoscan picture group, determines that described the second Y-direction scanned copy roughly scans center position Y21;
S304: described the second Y-direction scanned copy coordinates the first Y-direction scanned copy to described raised item fine scanning with the described center position Y21 that roughly scans;
S305: described OCT imaging system gathers the 2nd OCT tomoscan picture group of described raised item;
S306: computing machine is found out the sequence number of the width figure that in described the 2nd OCT tomoscan picture group, overall signal is the strongest, determines the position Y22 of accurate scanning center of the second Y-direction scanned copy.
Particularly, be equivalent to allow the rotating mechanism of the second Y-direction scanned copy 204 coordinate the rotating mechanism of the first Y-direction scanned copy 202, carry out two-dimensional scan.So-called two-dimensional scan herein, allows the second Y-direction scanned copy 204 centered by rotation center Y20, and take a less or larger angle of rotation as rotating stepping angle, and raised item 304 is slowly scanned.When every rotation one stepping angle of the second Y-direction scanned copy 204, the first Y-direction scanned copy 202, centered by rotation center Y10, and rotates a cycle with certain corner amplitude.Now OCT imaging system 100 gathers an OCT tomoscan picture group of raised item 304, computing machine is found out that width figure that overall signal is the strongest from an OCT tomoscan picture group, thereby determines that the second Y-direction scanned copy 204 roughly scans center position Y21.OCT imaging system 100 gathers the 2nd OCT tomoscan picture group of raised item 304 again, and find out that width figure that overall signal is the strongest from the 2nd OCT tomoscan picture group, the second Y-direction scanned copy 204 now accurately scans raised item 304, determine the position Y22. of its accurate scanning center now, the second Y-direction scanned copy 204 physical scan area center lines overlap with the primary optical axis of light path, and its debugging calibration operation is complete.
Until the second Y-direction scanned copy 204, rotate after one-period, the rotating mechanism that is equivalent to the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204 has carried out scanning simultaneously.
S203: described the first Y-direction scanned copy scans described raised item with preliminary sweep center of rotation Y10, determine the position Y11 of its accurate scanning center, and rotate the physical scan area center line of described the first Y-direction scanned copy is overlapped with the primary optical axis of light path with the described position Y11 of accurate scanning center scanning.
Particularly, when the second Y-direction scanned copy 204, determined after the position Y22 of its accurate scanning center, kept motionless.Putting before this, determining the accurate position Y11 of scanning center of the first Y-direction scanned copy 202.Be specially: the first 202 pairs of Y-direction scanned copies raised item, 304 scannings, OCT imaging system 100 gathers the 2nd OCT faulted scanning pattern of raised item 304; The position Y11 of accurate scanning center of corresponding described the first Y-direction scanned copy of the secondary series pixel L0 ' (not shown) at a seamed edge line place of the 2nd OCT faulted scanning pattern protrusions bar described in computer-made decision; Computing machine is made as the position Y11 of accurate scanning center the center of rotation parameter of the first Y-direction scanned copy, the first Y-direction scanned copy rotates with the rotation center scanning after calibrating, and the physical scan area center line of described the first Y-direction scanned copy is overlapped with the primary optical axis of light path.Therefore confirm that the method for the position Y11 of accurate scanning center that the first Y-direction scanned copy 202 is required is with the calibration of directions X scanned copy 201.
In step S303 and S306, definite method of the width figure that in the one OCT tomoscan picture group or the 2nd OCT tomoscan picture group, overall signal is the strongest is: when primary optical axis incident, light beam is returned through the surface reflection of raised item 304, and seamed edge line 3041 be raised item 304 by inboard that, nearest from debugging cylinder lens 303.Be arranged on the existence of the small through hole 3021 due to pressure mirror circle 302 of debugging cylinder 301 bottom inside, the turned position of the second Y-direction scanned copy 204 is during the closer to the required position Y22 of accurate scanning center, after the first Y-direction scanned copy 202 scanning one-periods, the overall signal of the OCT imaging of the raised item 304 that OCT imaging system 100 collects is stronger.The position Y22 of accurate scanning center is more departed from when far away in the turned position of the second Y-direction scanned copy 204, presses the small through hole of mirror circle 302 more because blocking light, and makes integral image signal more weak.
embodiment 3: the calibration of 300 pairs of Y-direction scan components of debugging cartridge, now Y-direction scan components is only containing the first Y-direction scanned copy 202 or the second Y-direction scanned copy 204.In this case, the calibration of Y-direction scanned copy, with identical to the calibration steps of directions X scanned copy, is not repeated at this.
Referring to Fig. 5, the present invention has also announced a kind of debugging cartridge 300, comprises debugging cylinder 301.Debugging cylinder 301 is the cylindric of one end sealing.The inside bottom of debugging cylinder 301 is provided with raised item 304, and a seamed edge line 3041 of raised item protrudes to the inside, and the object of doing is like this conducive to the strongest that width figure of overall signal in tomoscan picture group that OCT imaging system can collect raised item 304.In addition, raised item 304 meets system light beam coherence distance just to the distance of probe light path system 200, to meet OCT imaging requirements.
On the madial wall of debugging cylinder 301, be disposed with debugging cylinder lens 303 and press mirror circle 302.Press mirror circle 302 to be arranged on the outside of debugging cylinder lens 303, press mirror circle 302 middle parts to be provided with the through hole 3021 passing through for light path.The position of through hole 3021 just and the position consistency of the convergent point of scanning light beam center line, to meet OCT imaging demand.As noted earlier, utilize debugging cartridge 300, can to the directions X scanned copy 201 of scanister, the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204, realize calibration easily, their scanning area center line is consistent with system light path primary optical axis L2.
Certainly, when outer probe light path system 200 changes, debugging cartridge 300 can change, but the calibrating principle for X, Y-direction scanister scanning center is constant. particularly, the concrete variation of debugging cylinder 300 structures is exactly remove debugging cylinder lens 303 and press mirror circle 302, only retains debugging cylinder 301 and raised item 304, but now, need to meet raised item and just meet system light beam coherence distance to the distance of described probe light path system, other structure is not done any variation yet.Removed a debugging lens 303 and pressed mirror circle 302, debugging cartridge 300 can be calibrated the scanister of probe light path system 200 equally.
With reference to figure 4, the present invention has also announced a kind of system of debugging scanister, comprises, the debugging cartridge 300 setting gradually according to light path, probe light path system 200 and OCT imaging system 100.By debugging cartridge 300 is used in this system, can realize the function that the scanister of probe light path system 200 is realized to calibration.The scanister of probe light path system 200 described herein, comprises aforesaid directions X scanned copy 201, the first Y-direction scanned copy 202 and the second Y-direction scanned copy 204.
Beneficial effect of the present invention: the raised item of directions X scanned copy scanning debugging cartridge, OCT imaging system gathers the OCT faulted scanning pattern of raised item section, find out the required center position X1 of directions X scanned copy now, directions X scanned copy scans with center X1, thereby the physical scan area center line of directions X scanned copy overlaps with the primary optical axis of light path, reached the object to the rotation center calibration of directions X scanned copy;
Y-direction scanister comprises the first Y-direction scanned copy and the second Y-direction scanned copy, the second Y-direction scanned copy coordinates the first Y-direction scanned copy, first to then accurately scanning of raised item coarse scanning, calibrate the rotation center position Y22 of the second Y-direction scanned copy, then the second Y-direction scanned copy goes to rotation center position, allow the first Y-direction scanned copy again raised item be scanned, with directions X, determine that rotation center location method is identical, determine the position Y11 of accurate scanning center of the first Y-direction scanned copy, treat second, after the rotation center of one Y-direction scanned copy is all calibrated, the physical scan area center line of Y-direction overlaps with the primary optical axis L2 of system light path, reached the object to the rotation center calibration of Y-direction scan components.
In present patent application file, definite method of the position Y11 of accurate scanning center that roughly scans center position Y21, the first Y-direction scanned copy of the position Y22 of accurate scanning center of described the second Y-direction scanned copy, the second Y-direction scanned copy and the center position X1 of described directions X scanned copy is identical.Although with concrete numerical value is different in the computing formula in the center position X1 of directions X scanned copy, its Computing Principle is identical, does not state tired at this.
Therefore, utilize the adjusting of debugging cartridge to the directions X scanned copy of scanister and/or Y-direction scan components, can be achieved as follows effect: 1,, without taking shell apart, just can realize the calibration to them, thereby make debugging work simple, quick; 2, debug process is simple, even if do not possess the personnel of professional knowledge, does not utilize the method and equipment debugging scanister, also can debug out satisfied result.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (15)
1. the method for debugging cartridge calibration scan device, is characterized in that, comprises the directions X scanned copy calibration of described scanister and/or Y-direction scan components is calibrated;
It is described that to directions X scanned copy, calibration comprises:
Raised item in described directions X scanned copy scanning debugging cartridge; OCT imaging system gathers an OCT faulted scanning pattern of described raised item, the center position X1 of the described directions X scanned copy that described in an OCT faulted scanning pattern, the first row pixel L0 at a seamed edge line place of raised item is corresponding described in computer-made decision;
Computing machine is made as its center of rotation parameter by the center position X1 of described directions X scanned copy; Described directions X scanned copy rotates with described center position X1 scanning, and its physical scan area center line is overlapped with the primary optical axis of light path;
Described to the calibration of Y-direction scan components, comprising:
Define described Y-direction scan components and comprise the first Y-direction scanned copy and/or the second Y-direction scanned copy;
If described Y-direction scan components comprises the first Y-direction scanned copy and the second Y-direction scanned copy:
Described the second Y-direction scanned copy scans described raised item, determines the position Y22 of its accurate scanning center, and the physical scan area center line of described the second Y-direction scanned copy is overlapped with the primary optical axis of light path;
Described the first Y-direction scanned copy scans described raised item with preliminary sweep center of rotation Y10, determine the position Y11 of its accurate scanning center, and rotate with the described position Y11 of accurate scanning center scanning, the physical scan area center line of described the first Y-direction scanned copy is overlapped with the primary optical axis of light path;
If described Y-direction scan components only includes the first Y-direction scanned copy or only includes the second Y-direction scanned copy:
Described to the first Y-direction scanned copy or the second Y-direction scanned copy calibration steps with identical to described directions X scanned copy calibration steps.
2. the method for debugging cartridge calibration scan device as claimed in claim 1, is characterized in that: definite method of the center position X1 of described directions X scanned copy is: according to formula
Wherein, N is an OCT faulted scanning pattern Width pixel count, N1 is the pixel count between the centre line L 1 of an OCT faulted scanning pattern and the first row pixel L0 at a seamed edge line place of raised item, X0 is the initial rotation center of directions X scanned copy, Xmax is the directions X scanister scanning total angle of rotation, and X1 is the center position after the calibration of directions X scanned copy; N, X0, Xmax are systemic presupposition data, and N1 is calculated and drawn by computing machine, by above formula, just can obtain X1.
3. the method for debugging cartridge calibration scan device as claimed in claim 1, it is characterized in that: the raised item in described directions X scanned copy scans described debugging cartridge, OCT imaging system gathers the OCT faulted scanning pattern of described raised item, before the center position X1 step of the described directions X scanned copy that described in computer-made decision, the first row pixel L0 at a seamed edge line place of OCT faulted scanning pattern protrusions bar is corresponding, also comprise:
According to light path, set gradually debugging cartridge, probe light path system and OCT imaging system; Described probe light path system comprises described directions X scanned copy and described Y-direction scan components.
4. the method for debugging cartridge calibration scan device as claimed in claim 3, is characterized in that: describedly according to light path, set gradually debugging cartridge, specifically comprise:
Described raised item is placed on to debugging cylinder bottom inside and makes a wherein seamed edge line of described raised item outstanding towards described debugging cylinder bottom inside, make described raised item just meet system light beam coherence distance to the distance of described probe light path system simultaneously;
When to described directions X scanned copy calibration debugging, described seamed edge line all keeps vertical with the rotation axis of described directions X scanned copy and the rotation axis of described the first Y-direction scanned copy; When to described Y-direction scan components calibration debugging, the equal keeping parallelism of turning axle of the rotation axis of described seamed edge line and described the first Y-direction scanned copy and/or the second Y-direction scanned copy;
By debugging cylinder lens, press Jing Quan to be successively set in debugging cylinder inside circumference, and the position that makes the through hole on described pressure Jing Quan is just and the position consistency of the convergent point of scanning light beam center line.
5. the method for debugging cartridge calibration scan device as claimed in claim 1, is characterized in that: described to directions X scanned copy calibration steps before, also comprise:
Described the first Y-direction scanned copy is gone to its rotation center position Y10 and/or the rotating mechanism of described the second Y-direction scanned copy is gone to its rotation center Y20.
6. the method for debugging cartridge calibration scan device as claimed in claim 1, is characterized in that: described to Y-direction scan components calibration steps before, can also comprise the described calibration to directions X scanned copy; Described to directions X scanned copy calibration steps before, can also comprise the described calibration to Y-direction scan components.
7. debug as described in claim 2 the method for cartridge calibration scan device, it is characterized in that: described the second Y-direction scanned copy scans described raised item, determine in the position Y22 of its accurate scanning center, described scanning is accurately scanning after first coarse scan, comprising:
The second Y-direction scanned copy slowly scans described raised item with larger or less rotation stepping angle;
Described OCT imaging system gathers an OCT tomoscan picture group of described raised item;
Computing machine is found out the strongest width figure of overall signal in a described OCT tomoscan picture group, determines that described the second Y-direction scanned copy roughly scans center position Y21;
Described the second Y-direction scanned copy coordinates the first Y-direction scanned copy to described raised item fine scanning with the described center position Y21 that roughly scans;
Described OCT imaging system gathers the 2nd OCT tomoscan picture group of described raised item again;
Computing machine is found out the sequence number of the width figure that in described the 2nd OCT tomoscan picture group, overall signal is the strongest, determines the position Y22 of accurate scanning center of the second Y-direction scanned copy.
8. the method for debugging cartridge calibration scan device as claimed in claim 7, it is characterized in that: described the first Y-direction scanned copy scans described raised item with preliminary sweep center of rotation Y10, determine the position Y11 of its accurate scanning center, make the step that the physical scan area center line of described the first Y-direction scanned copy overlaps with the primary optical axis of light path be:
Described the first Y-direction scanned copy scans described raised item with preliminary sweep center of rotation Y10;
OCT imaging system gathers the 2nd OCT faulted scanning pattern of described raised item;
The position Y11 of accurate scanning center of corresponding described the first Y-direction scanned copy of the secondary series pixel L0 ' at a seamed edge line place of the 2nd OCT faulted scanning pattern protrusions bar described in computer-made decision;
Computing machine is made as the position Y11 of accurate scanning center of the first Y-direction scanned copy the center of rotation parameter of the first Y-direction scanned copy, described the first Y-direction scanned copy rotates with the described position Y11 of accurate scanning center scanning, and the physical scan area center line of described the first Y-direction scanned copy is overlapped with the primary optical axis of light path.
9. the method for the debugging cartridge calibration scan device as described in any one in claim 7-8, is characterized in that: the method that computing machine is found out the width figure that in a described OCT tomoscan picture group or the 2nd OCT tomoscan picture group, overall signal is the strongest is:
When light beam is along primary optical axis incident, through the turned position of described raised item surface reflection and the second Y-direction scanned copy, during the closer to the position Y22 of its accurate scanning center, the image of OCT imaging system collection is a strongest width figure in a described OCT tomoscan picture group or the 2nd OCT tomoscan picture group.
10. the method for the debugging cartridge calibration scan device as described in any one in claim 7-8, is characterized in that: definite method of the position Y11 of accurate scanning center that roughly scans center position Y21 and the first Y-direction scanned copy of the position Y22 of accurate scanning center of described the second Y-direction scanned copy, the second Y-direction scanned copy is equal identical with described definite method to the center position X1 of directions X scanned copy.
11. 1 kinds of debugging cartridges, is characterized in that, comprising: the debugging cylinder of hollow and be arranged on the raised item of its bottom inside, along a crest line of described raised item to projecting inward; Described raised item meets system light beam coherence distance just to the distance of described probe light path system.
12. debugging cartridges as claimed in claim 10, is characterized in that: also comprise and be arranged on from inside to outside the debugging cylinder lens on described debugging cylinder inner side and press Jing Quan; In the middle of described pressure mirror circle, offer the through hole passing through for light source; The position of described through hole just and the position consistency of the convergent point of scanning light beam center line.
13. debugging cartridges as described in any one in claim 11-12, is characterized in that: the section perpendicular to a crest line of described raised item is at least a kind of of V-arrangement, triangle or arch.
14. 1 kinds of systems of debugging scanister, is characterized in that, comprising: the debugging cartridge setting gradually according to light path, probe light path system and OCT imaging system, described probe light path system comprises: directions X scanned copy and/or Y-direction scan components.
The system of 15. debugging scanister as claimed in claim 14, is characterized in that: described Y-direction scan components comprises the first Y-direction scanned copy and/or the second Y-direction scanned copy.
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| WO2019037142A1 (en) * | 2017-08-25 | 2019-02-28 | 广州永士达医疗科技有限责任公司 | Oct conduit calibration apparatus and method |
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