CN110132174A - Angel type lobster eye x-ray imaging eyeglass face type test device based on streak reflex method - Google Patents
Angel type lobster eye x-ray imaging eyeglass face type test device based on streak reflex method Download PDFInfo
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- CN110132174A CN110132174A CN201910388704.3A CN201910388704A CN110132174A CN 110132174 A CN110132174 A CN 110132174A CN 201910388704 A CN201910388704 A CN 201910388704A CN 110132174 A CN110132174 A CN 110132174A
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- eyeglass
- ray imaging
- eye
- lobster
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
Abstract
The Angel type lobster eye x-ray imaging eyeglass face type test device based on streak reflex method that the invention discloses a kind of, include: the parts such as LCD screen, Angel type lobster optics of the eye eyeglass, CCD detection camera and signal processing system, can be applied to the fields such as the unilateral type detection of optical frames.Firstly, the signal processing system, which is based on SIN function, generates sine streak image data file, the LCD screen is recycled to show chequered with black and white sine streak image.Secondly, the CCD camera collects these black and white strip images Jing Guo the lobster spectacle lens surface reflection, send to signal processing system processing, and then obtain the surface slope distribution map of image.Show that lens spherical face type is distributed finally by Zernike fitting of a polynomial algorithm integral operation.The present invention, which can fast implement, detects eyeglass to be measured, the accurate surface precision information and result for obtaining object high-resolution.
Description
Technical field
The present invention relates to the Angel type lobster eye x-ray imaging eyeglass face type test devices based on streak reflex method, belong to light
Face type testing field.
Background technique
Angel type lobster eye x-ray imaging eyeglass is a kind of optical frames assembled based on glancing incidence principle of reflection to X-ray
Piece, rectangular microchannel (micro-meter scale) array for being directed toward the centre of sphere simultaneously by millions of are constituted, pair of this spherical surface honeycomb
Title property ensure that its indifference imaging in visual field, and vias inner walls finish reaches nanometer scale (RMS).Incident X-ray
It is totally reflected on rectangular microchannel interior walls, changes the transmission direction of X-ray by spherical array structure, to realize to entering
X-ray focusing imaging function is penetrated, has been widely used in X-ray astronomy field at present.
The face type quality of lobster spectacle lens directly affects the focusing performance of eyeglass, in order to further increase the performance of eyeglass,
The measurement method to lobster spectacle lens spherical surface type is needed to conduct a research.The test of the domestic face type to lobster spectacle lens rises at present
Step is than later, and there are no a set of easy face type test equipments.Mainly there is contact for the face type measuring technology of lobster spectacle lens
Formula contour detecting technology and contactless interferometry technology.The measurement sampling density of contact contourgraph is low, and the scan period is long,
In the presence of the risk for scratching lens surface film layer；Contactless interferometer has Zygo interferometer, and measuring speed is fast and precision is high, but
Optical compensation device need to be generally cooperated to use, dynamic range is small, high to test environmental requirement, vulnerable to temperature air-flow, vibration
It influences.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention provides a kind of Angel type based on streak reflex method
Lobster eye x-ray imaging eyeglass face type test device measures the unilateral type of Angel type lobster glasses using streak reflex method, improves and survey
Surface precision is measured, simplifies structure design, reduces testing cost.
To achieve the above object, the present invention adopts the following technical scheme:
Angel type lobster eye x-ray imaging eyeglass face type test device based on streak reflex method, including LCD screen,
Angel type lobster optics of the eye eyeglass, CCD detection camera and signal processing system, in which:
The eyeglass face type test device include LCD screen, Angel type lobster optics of the eye eyeglass, CCD detection camera and
Signal processing system；
The LCD screen, for emitting chequered with black and white stripe pattern to eyeglass to be detected；
The Angel type lobster optics of the eye eyeglass, for reflecting the stripe pattern of eyeglass to be detected；
The CCD detection camera, for receiving the stripe pattern after lens reflecting to be measured；
The signal processing system is connect with the CCD detection camera data, for generate sinusoidal black and white strip image and
The data after CCD detection camera is collected are handled, obtain lens spherical finally by Zernike polynomial fitting integral operation
The distribution of face type.
In further embodiment, the LCD screen issues the stripe pattern that black and white is met each other respectively in the x direction and the y direction,
Screen target surface pixel size is 3480 × 2160, and single pixel size is 4 μm~100 μm.
In further embodiment, the wave band of the light of the stripe pattern is 632.8nm.
In further embodiment, the external form of the lobster eye x-ray imaging eyeglass is spherical surface honeycomb, and radius of curvature is
100mm~1000mm；With a thickness of 0.2mm~10mm；It includes several identical single channels, the single pass section that it is internal
It is square, each single channel is uniformly distributed, and perpendicular to lobster optics of the eye lens surface direction and ball is directed toward in channel arrangement
The heart.
In further embodiment, the lobster eye x-ray imaging eyeglass includes 1,000,000~10,000,000 single channels, Mei Gedan
Channel cross-section is having a size of 10 μm~1000 μm.
In further embodiment, the detector target surface pixel size of the CCD detection camera is 1024 × 1280, single
A pixel size is 4 μm~100 μm.
In further embodiment, the LCD screen and CCD detection camera are placed in the Angel type lobster eye x-ray imaging
Lens curvature center of radius adjacent locations, are axisymmetricly distributed.
In further embodiment, described image signal processing system includes signal generation module and face type fitting module,
Chequered with black and white sine streak is generated by signal generation module, face type fitting module is used to calculate the face type of lobster spectacle lens.
Angel type lobster eye x-ray imaging eyeglass face type test device based on streak reflex method of the invention, with existing skill
Art is compared, and is had the advantage that
Present apparatus strong interference immunity, dynamic range are big and device structure is simple, can realize well unilateral to lobster glasses
The rapid survey of type
Above-mentioned high-resolution image imaging clearly, facilitates image analysis, fast implements the survey of measuring targets face type
Amount, convenient for the spherical surface thermoforming process of real-time instruction eyeglass.
It should be appreciated that as long as aforementioned concepts and all combinations additionally conceived described in greater detail below are at this
It can be viewed as a part of the subject matter of the disclosure in the case that the design of sample is not conflicting.In addition, required guarantor
All combinations of the theme of shield are considered as a part of the subject matter of the disclosure.
Can be more fully appreciated from the following description in conjunction with attached drawing present invention teach that the foregoing and other aspects, reality
Apply example and feature.The features and/or benefits of other additional aspects such as illustrative embodiments of the invention will be below
Description in it is obvious, or learnt in practice by the specific embodiment instructed according to the present invention.
Detailed description of the invention
Attached drawing is not intended to drawn to scale.In the accompanying drawings, identical or nearly identical group each of is shown in each figure
It can be indicated by the same numeral at part.For clarity, in each figure, not each component part is labeled.
Now, example will be passed through and the embodiments of various aspects of the invention is described in reference to the drawings, in which:
Fig. 1 is that the present invention is based on the signals of the Angel type lobster eye x-ray imaging eyeglass face type test device of streak reflex method
Figure；
Fig. 2 is light principle of reflection figure of the present invention；
Fig. 3 is the structural schematic diagram of Angel type lobster spectacle lens of the present invention；
Fig. 4 a and 4b are the chequered with black and white sine streak that LCD screen of the present invention issues；
Fig. 5 is the reflection strip image that the black and white that CCD camera of the present invention is collected is met each other；
Fig. 6 is the slope distribution figure that signal processing system of the present invention is calculated；
Fig. 7 is the face type distribution map that signal processing system of the present invention is calculated.
In figure, the meaning of each appended drawing reference is as follows:
LCD screen 1, lobster optics of the eye eyeglass 2, CCD high resolution camera 3, image-signal processing system 4, reflection light
5, the LCD black and white issued are met each other striped light 6, and the black and white that CCD camera is collected is met each other striped light 7.
Specific embodiment
In order to better understand the technical content of the present invention, special to lift specific embodiment and institute's accompanying drawings is cooperated to be described as follows.
Various aspects with reference to the accompanying drawings to describe the present invention in the disclosure, shown in the drawings of the embodiment of many explanations.
It is not intended to cover all aspects of the invention for embodiment of the disclosure.It should be appreciated that a variety of designs and reality presented hereinbefore
Those of apply example, and describe in more detail below design and embodiment can in many ways in any one come it is real
It applies, this is because conception and embodiment disclosed in this invention are not limited to any embodiment.In addition, disclosed by the invention one
A little aspects can be used alone, or otherwise any appropriately combined use with disclosed by the invention.
Based on above-mentioned basic invention thinking, as shown in Figure 1, specific embodiments of the present invention give it is a kind of anti-based on striped
The Angel type lobster eye x-ray imaging eyeglass face type test device of shooting method, can be used for the detection field of optical surface type.The device
Specifically include that LCD screen 1, lobster optics of the eye eyeglass 2, high resolution CCD camera 3 and signal processing system 4.
Specifically, above-mentioned LCD screen 1, lobster optics of the eye eyeglass 2, high resolution CCD camera 3 and according to optical path sequence cloth
It sets.
LCD screen 1, for emitting chequered with black and white sine streak 6 to lobster optics of the eye eyeglass 2 to be detected, such as Fig. 4 a, 4b
It is shown.
Lobster optics of the eye eyeglass 2 is set in transmitting optical path, for the chequered with black and white striped 6 that reflective LCD issues, is such as schemed
Shown in 5.
LCD screen 1 and CCD high-resolution camera 2 are set to the optical curvature radius vicinity of lobster optics of the eye eyeglass, are in axis
It is symmetrical.
Signal processing system 4 is electrically connected with LCD screen 1 and 3 device of CCD camera, generated chequered with black and white for issuing LCD
Image 6 and the face type test result for obtaining examined object.
The basic principle of above-mentioned apparatus are as follows: signal processing system 4 is based on SIN function and generates sine streak image data text
Part recycles LCD screen to show chequered with black and white sine streak image 6.Secondly, CCD camera, which is collected, passes through lobster spectacle lens
These black and white strip images 7 of surface reflection, send to signal processing system 4, and then obtain the surface slope distribution map of image, most
Lens spherical honeycomb face type is obtained by Zernike fitting of a polynomial method integral operation afterwards.
The present invention is directed to Angel type lobster eye x-ray imaging eyeglass face type detection of complex, using common contourgraph and interferometer
The problem of detection is unable to satisfy quick testing requirement introduces streak reflex method and is used for Angel type lobster eye x-ray imaging eyeglass face type
It is tested, one side streak reflex measuring device is without optical compensatory element and the optical path adjusting of complexity, it is only necessary to acquire black and white
The sine streak image met each other can be obtained unified face type, and strong interference immunity, dynamic range are big and device structure is simple, separately
The image imaging clearly of one side high resolution CCD, facilitates image analysis, convenient for the spherical surface thermoforming work of real-time instruction eyeglass
Skill.
In conjunction with shown in Fig. 1,2, LCD screen 1 issues the stripe pattern that black and white is met each other, screen target respectively in the x direction and the y direction
Face pixel size is 3480 × 2160, and single pixel size is 4 μm~100 μm.
The wave band of the light of stripe pattern is 632.8nm.
In conjunction with Fig. 3, the external form of lobster eye x-ray imaging eyeglass 2 is spherical surface honeycomb, and radius of curvature is 100mm~1000mm；
With a thickness of 0.2mm~10mm；It includes several identical single channels that it is internal, and single pass section is square, each single-pass
Road is uniformly distributed, and perpendicular to lobster optics of the eye lens surface direction and the centre of sphere is directed toward in channel arrangement.
Lobster eye x-ray imaging eyeglass include 1,000,000~10,000,000 single channels, each single channel sectional dimension be 10 μm~
1000μm。
The detector target surface pixel size of CCD detection camera 3 is 1024 × 1280, and single pixel size is 4 μm~100
μm。
LCD screen and CCD detection camera are placed in Angel type lobster eye x-ray imaging lens curvature center of radius adjacent locations,
Axisymmetricly it is distributed.
Further, it is used in Zernike fitting of a polynomial opposite type to be reconstructed, face type can indicate are as follows:
W (x, y) is reconstruct face type function, Z in formulai(x, y) is Zernike polynomial i-th, aiIt is corresponding for this
Coefficient.Linearly every coefficient can establish following relationship with surveyed slope value and is Zernike multinomial
By solving above-mentioned equation group, each term coefficient of Zernike multinomial is obtained, and then obtain the face shape parameter of eyeglass.
Further, in this certain preferred embodiment, the external form of core component lobster optics of the eye eyeglass is spherical surface bee
Nest shape, with a thickness of 1mm~100mm；As shown in figure 3, it includes several identical single channels that it is internal, single pass section is positive
Rectangular, single channel is uniformly distributed and each single pass arrangement angle is consistent, forms array manner close-packed arrays, and single-pass Dow Jones index
To the vertical direction of the plate level of lobster optics of the eye eyeglass.
It further, include 5,000,000~1000 Wan Gendan in lobster optics of the eye eyeglass in this certain preferred embodiment
Channel, each single pass size dimension are 10 μm~1000 μm.
Lobster optics of the eye eyeglass is tracked using optical reflection.Its image-forming principle is as shown in Fig. 2, if eyeglass face to be measured
Type is spherical surface ideal situation, a point p (x on screens,ys,zs) issue light be irradiated to lens surface M (xm,ym,zm) at position
It reflects, the light after outgoing can meet at I (x with camera target surfacei,yi,zi) at ideal position, light reflection equation can be with table
It is shown as, as shown in Figure 2.
When there are certain error, M (x for the unilateral type of measured lensm,ym,zm) point method of the normal n-tuple relative to ideal face type
Line n0Vector can deflect α angle, then the deflection angle of outgoing reflection light is 2 α, at this moment according to light total reflection principle
Screen p point outgoing light after mirror-reflection with camera target surface intersection location C (xc,yc,zc) at, then available reflection is black
White alternate striped.
For any group of reflection light 5 of light emitting region on screen, in known screen exit point p (xs,ys,zs)、
Corresponding lens reflecting point M (xm,ym,zm), camera collect position coordinates C (xc,yc,zc) and camera ideal position coordinate I (xi,
yi,zi), then the slope z at lens surface reflection point Mx、zyIt can be expressed as, test results are shown in figure 6.
Further, in certain preferred embodiments, above-mentioned imaging detector 3 is CCD imaging detector.It is good
Image resolution ratio plays an important role to subsequent signal processing system to the parsing of image, therefore chooses ccd detector target surface
Pixel size is 1024 × 1280, and single pixel size is 4 μm~100 μm, can be realized carry out Asia to object plane type in this way
The assessment and analysis of micron level.
Further, due to deviateing ideal position there are when error, will lead to reflection light when object plane type, therefore can be
Apparent defect striped is formed on chequered with black and white image collected by imaging detector, and drawbacks described above striped is calculated, is obtained
To the tri-dimensional facial type of Angel type lobster spectacle lens, as shown in Figure 7.
Preferably, being additionally provided with alarm module in above-mentioned control system, preset alarm is touched in signal processing system
Threshold value is sent out, the alarm activation threshold value is related to face type defect level.When the face type error for analyzing object under test has major defect
When can trigger alarm module and sound an alarm.
The present invention proposes the Angel type lobster eye x-ray imaging eyeglass face type test device based on streak reflex method, can be quick
Situations such as realizing the spherical surface type to eyeglass to be measured is used for quickly detecting, and accurately obtains the defect of the high-resolution of eyeglass face to be measured type
Information has broad application prospects with as a result, structure is simple in detection field.
Although the present invention has been disclosed as a preferred embodiment, however, it is not to limit the invention.Skill belonging to the present invention
Has usually intellectual in art field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Cause
This, the scope of protection of the present invention is defined by those of the claims.
Claims (10)
1. a kind of Angel type lobster eye x-ray imaging eyeglass face type test device based on streak reflex method, which is characterized in that institute
Stating eyeglass face type test device includes LCD screen, Angel type lobster optics of the eye eyeglass, CCD detection camera and signal processing system
System；
The LCD screen, for emitting chequered with black and white stripe pattern to eyeglass to be detected；
The Angel type lobster optics of the eye eyeglass, for reflecting the stripe pattern of eyeglass to be detected；
The CCD detection camera, for receiving the stripe pattern after lens reflecting to be measured；
The signal processing system is connect with the CCD detection camera data, for generating sinusoidal black and white strip image and processing
Data after the collection of CCD detection camera, obtain lens spherical face type finally by Zernike polynomial fitting integral operation
Distribution.
2. the Angel type lobster eye x-ray imaging eyeglass face type according to claim 1 based on streak reflex method tests dress
It sets, it is characterised in that: the LCD screen issues the stripe pattern that black and white is met each other, screen target surface picture respectively in the x direction and the y direction
Plain size is 3480 × 2160, and single pixel size is 4 μm~100 μm.
3. the Angel type lobster eye x-ray imaging eyeglass face type according to claim 2 based on streak reflex method tests dress
It sets, it is characterised in that: the wave band of the light of the stripe pattern is 632.8nm.
4. the Angel type lobster eye x-ray imaging eyeglass face type according to claim 1 based on streak reflex method tests dress
Set, it is characterised in that: the external form of the lobster eye x-ray imaging eyeglass be spherical surface honeycomb, radius of curvature be 100mm~
1000mm；With a thickness of 0.2mm~10mm；It includes several identical single channels that it is internal, and the single pass section is pros
Shape, each single channel are uniformly distributed, and perpendicular to lobster optics of the eye lens surface direction and the centre of sphere is directed toward in channel arrangement.
5. the Angel type lobster eye x-ray imaging eyeglass face type according to claim 4 based on streak reflex method tests dress
It sets, it is characterised in that: the lobster eye x-ray imaging eyeglass includes 1,000,000~10,000,000 single channels, each single channel sectional dimension
It is 10 μm~1000 μm.
6. the Angel type lobster eye x-ray imaging eyeglass face type according to claim 1 based on streak reflex method tests dress
It sets, it is characterised in that: the detector target surface pixel size of the CCD detection camera is 1024 × 1280, single pixel size
It is 4 μm~100 μm.
7. according to claim 1 to the Angel type lobster eye x-ray imaging mirror described in any one in 6 based on streak reflex method
Unilateral type test device, it is characterised in that: the LCD screen is placed in the Angel type lobster eye X with CCD detection camera and penetrates
Line lens curvature center of radius adjacent locations, are axisymmetricly distributed.
8. the Angel type lobster eye x-ray imaging eyeglass face type according to claim 1 based on streak reflex method tests dress
It sets, it is characterised in that: institute's model processing system is reconstructed by Zernike fitting of a polynomial opposite type, and face type can be with
It indicates are as follows:
In formula, w (x, y) is reconstruct face type function, Zi(x, y) is Zernike polynomial i-th, aiFor the corresponding system of this
Number.
9. the Angel type lobster eye x-ray imaging eyeglass face type according to claim 8 based on streak reflex method tests dress
It sets, it is characterised in that: establishing between the polynomial linear each term coefficient of the Zernike and surveyed slope value has following relationship
Are as follows:
In formula, zx,zyFor the slope value of institute's measuring point；
Wherein, for any group of light of light emitting region on screen, in known screen exit point p (xs,ys,zs), corresponding eyeglass
Reflection point M (xm,ym,zm), camera collect position coordinates C (xc,yc,zc) and camera ideal position coordinate I (xi,yi,zi), mirror
The slope z on X and Y-direction at piece surface reflection point Mx、zyIt is calculated by following manner:
10. the Angel type lobster eye x-ray imaging eyeglass face type test based on streak reflex method according to claim 8 or claim 9
Device, it is characterised in that: combine preset primary face type to estimate when calculating mirror surface face type distributed in three dimensions, it is more by Zernike
The fitting process of item formula iterates, and finally acquires the tri-dimensional facial type of eyeglass to be measured.
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|---|---|---|---|
| CN201910388704.3A CN110132174B (en) | 2019-05-10 | 2019-05-10 | Angel type lobster eye X-ray lens surface type testing device based on stripe reflection method |
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| CN111693549A (en) * | 2020-05-14 | 2020-09-22 | 西安电子科技大学 | Method for detecting and classifying defects of mobile phone cover plate glass |
| CN114646455A (en) * | 2022-02-11 | 2022-06-21 | 中国人民解放军61540部队 | Hot bending process detection method for rectangular channel X-ray detection lens |
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| CN114646455B (en) * | 2022-02-11 | 2023-09-15 | 中国人民解放军61540部队 | Hot bending process detection method for rectangular channel X-ray detection lens |
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| CN110132174B (en) | 2021-06-29 |
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