CN114624010B - Eccentricity testing method - Google Patents
Eccentricity testing method Download PDFInfo
- Publication number
- CN114624010B CN114624010B CN202210525775.5A CN202210525775A CN114624010B CN 114624010 B CN114624010 B CN 114624010B CN 202210525775 A CN202210525775 A CN 202210525775A CN 114624010 B CN114624010 B CN 114624010B
- Authority
- CN
- China
- Prior art keywords
- eccentric
- preset
- lens
- point
- points
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0242—Testing optical properties by measuring geometrical properties or aberrations
- G01M11/0257—Testing optical properties by measuring geometrical properties or aberrations by analyzing the image formed by the object to be tested
- G01M11/0264—Testing optical properties by measuring geometrical properties or aberrations by analyzing the image formed by the object to be tested by using targets or reference patterns
-
- 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
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/60—Analysis of geometric attributes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
The invention relates to the field of testing, in particular to an eccentricity testing method. S1, placing an eccentric lens on eccentric testing equipment; the eccentric testing equipment is used for displaying an initial eccentric point of the eccentric lens in the current state on the image display equipment; analyzing whether the initial eccentric point is in a first preset area or not; when the initial eccentric point is in a first preset area, rotating the eccentric lens to obtain eccentric points of the eccentric lens at a plurality of angles; analyzing whether the central deviation of the eccentric lens is larger than a preset central deviation or not according to the plurality of eccentric points; when the initial eccentric point is not in the first preset area or the central deviation of the eccentric lens is greater than the preset central deviation, pressing the eccentric lens; and curing the eccentric lens when the central deviation of the eccentric lens is less than or equal to the preset central deviation. And the difference between the central deviation and the preset deviation is obtained according to the eccentric point, so that whether the eccentric lens meets the requirement or not can be obtained, and the test process is simpler and more convenient.
Description
Technical Field
The invention relates to the field of testing, in particular to an eccentricity testing method.
Background
The optical lens is an essential component in a machine vision system, directly influences the quality of imaging quality, and influences the realization and effect of an algorithm. In order to realize the high-quality imaging effect of the optical lens, the optical lens needs to ensure that each lens has smaller coaxiality, and meanwhile, on the basis, the eccentricity of each optical lens needs to be ensured to be smaller, and the higher imaging effect can be realized.
At present, there is a possibility that an optical lens not mounted in an optical lens in the prior art may be tilted and decentered to a certain extent, and how to quickly test the optical lens is an urgent problem to be solved.
Disclosure of Invention
The invention solves the technical problems in the prior art, and provides an eccentricity testing method, which can obtain whether an eccentric lens meets requirements or not by rotating the lens and obtaining a plurality of eccentric points and obtaining the difference between the central deviation and the preset deviation according to the eccentric points, and the testing process is simple and convenient.
The technical scheme provided by the invention is as follows:
an eccentricity testing method comprising the steps of: s1, placing the eccentric lens on eccentric testing equipment; the eccentricity testing equipment is used for displaying an initial eccentricity point of the eccentric lens in the current state on image display equipment;
s2, analyzing whether the initial eccentric point is in a first preset area or not;
s3, when the initial eccentric point is in a first preset area, rotating the eccentric lens to obtain eccentric points of the eccentric lens at a plurality of angles;
s4, analyzing whether the central deviation of the eccentric lens is larger than a preset central deviation or not according to the plurality of eccentric points;
s5, when the initial eccentric point is not in a first preset area or the central deviation of the eccentric lens is larger than the preset central deviation, pressing the eccentric lens; jumping to execute step S3;
and S6, when the central deviation of the eccentric lens is less than or equal to the preset central deviation, curing the eccentric lens.
Preferably, step S3 specifically includes:
s31, when the initial eccentric point or the current eccentric point is in a first preset area, clearing the eccentric point on the image display device;
and S32, rotating the eccentric lens at a preset speed to obtain the eccentric point of the eccentric lens at each angle.
Preferably, step S4 specifically includes:
s41, fitting according to the eccentric points to obtain a circle fitting curve;
s42, analyzing whether the radius of the circle fitting curve is larger than a preset radius or not;
s43, when the radius of the circle fitting curve is larger than a preset radius, the central deviation of the eccentric lens is larger than the preset central deviation;
and S44, when the radius of the circle fitting curve is smaller than or equal to the preset radius, the central deviation of the eccentric lens is smaller than or equal to the preset central deviation.
Preferably, step S41 specifically includes:
s411, analyzing and obtaining a region where the gravity center of the eccentric point is located according to the positions of the plurality of eccentric points, and selecting the region where the gravity center of the eccentric point is located as a second preset region;
s412, selecting a point in the second preset area, drawing a first circular curve, and enabling the first circular curve to at least comprise an eccentric point with a first preset proportion;
and S414, determining the circle fitting curve according to the ratio of the radius of the first circle curve to the first preset proportion.
Preferably, when the distance between the eccentric point outside the first circular curve and the first circular curve exceeds a preset distance, the eccentric point is an abnormal eccentric point;
steps S412 and S414 further include:
s413, analyzing whether the number of the abnormal eccentric points is larger than a preset number or not;
when the number of the abnormal eccentric points is larger than the preset number, jumping to execute the step S3; and when the number of the abnormal eccentric points is less than or equal to the preset number, jumping to execute the step S414.
Preferably, step S414 specifically includes:
s4141, analyzing the ratio of the radius of the first circular curve to the proportion of eccentric points contained in the first circular curve;
s4142, selecting the first circular curve with the smallest ratio of the radius of the first circular curve to the proportion of the eccentric points included in the first circular curve as a circle fitting curve.
Preferably, step S5 specifically includes:
s51, when the initial eccentric point is not in the first preset area or the central deviation of the eccentric lens is larger than the preset central deviation, acquiring the position of the current eccentric point as a reference eccentric point;
s52, obtaining a theoretical adjusting direction according to the position of the reference eccentric point and the position of the first preset area; the theoretical adjusting direction points to the first preset area from a reference eccentric point;
s53, establishing a coordinate mapping relation between the image display equipment and the eccentric lens;
s54, obtaining the actual adjusting direction on the eccentric lens according to the theoretical adjusting direction and the coordinate mapping relation;
s55, pressing the edge of the eccentric lens along the actual adjusting direction.
Preferably, step S55 is followed by:
s56, re-acquiring the position of the current eccentric point, and observing whether the position of the current eccentric point is located in a first preset area;
when the position of the current eccentric point is not located in the first preset area, jumping to execute step S55;
when the position of the current eccentric point is located within the first preset area, jumping to perform step S3.
Preferably, step S56 is followed by: and S57, curing the eccentric lens.
Compared with the prior art, the eccentricity testing method provided by the invention has the following beneficial effects:
1. whether the eccentric lens meets the requirements or not can be obtained by rotating the lens, obtaining a plurality of eccentric points and obtaining the difference between the central deviation and the preset deviation according to the eccentric points, and the testing process is simple and convenient;
2. the eccentric instrument acquires the segregation points at regular time, so that when an operator rotates the eccentric lens, the eccentric lens can be rotated at a constant speed to better obtain the eccentric points at all angles, and the description degree of the eccentric points on the eccentric degree of the eccentric lens is increased;
3. in the process of selecting the circle fitting curve, due to the fact that shaking may occur in the testing process, after shaking, the distance between eccentric points generated by shaking is large, abnormal eccentric points can be removed through determination of a ratio of a first preset proportion with a proper size, and meanwhile, a first circle curve with the smallest ratio of the radius of the first circle curve to the first preset proportion is selected as the circle fitting curve, so that the circle fitting curve can be represented to a greater extent by the first circle curve.
Drawings
The above features, technical features, advantages and modes of realisation of an eccentricity testing method will be further described in the following, in a clearly understandable manner, with reference to the accompanying drawings, which illustrate preferred embodiments.
FIG. 1 is a schematic flow chart of an eccentricity testing method of the present invention;
FIG. 2 is a schematic flow chart of step S3 in the eccentricity testing method according to the present invention;
FIG. 3 is a schematic flow chart of another eccentricity testing method of the present invention;
FIG. 4 is a schematic flow chart of another eccentricity testing method of the present invention;
FIG. 5 is a schematic diagram of an eccentricity point on an image display device in an eccentricity testing method according to the present invention;
FIG. 6 is a schematic diagram of a circle-fitting curve in an eccentricity testing method according to the present invention;
FIG. 7 is a schematic diagram of an eccentricity point outside a first circular curve in an eccentricity testing method according to the present invention;
FIG. 8 is a schematic diagram of another eccentricity test method of the present invention in which the first circle does not include an eccentricity point;
FIG. 9 is a schematic diagram of a first circular curve containing four eccentric points according to an eccentric testing method of the present invention;
FIG. 10 is a schematic view of an eccentricity point on an image display apparatus in another eccentricity testing method according to the present invention;
FIG. 11 is a schematic diagram of an eccentric point on an image display device during the debugging process of an eccentric lens in an eccentric testing method according to the present invention;
FIG. 12 is a schematic diagram of a circle-fit curve in another eccentricity testing method of the present invention;
FIG. 13 is a schematic diagram of a circle-fit curve in another eccentricity testing method of the present invention;
FIG. 14 is a schematic diagram of the position of the operator and the off-center lens in an off-center testing method of the present invention.
The reference numbers illustrate: 1. an eccentric point; 2. an eccentric lens; 3. a first preset area; 4. a second preset area; 5. fitting a curve to a circle; 6. an operator.
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.
For the sake of simplicity, only the parts relevant to the invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "a" means not only "only one of this but also a case of" more than one ".
Example 1
As shown in fig. 1 and 2, an eccentricity testing method includes the steps of:
s1, placing the eccentric lens on eccentric testing equipment; the eccentricity testing equipment is used for displaying an initial eccentricity point of the eccentric lens in the current state on image display equipment;
the eccentric test equipment mainly refers to an eccentric instrument, and the image display equipment comprises a display electrically connected to the eccentric instrument; an operator can calibrate and zero the eccentricity gauge before placing the eccentric lens and calibrate a display interface of the display; an operator speaks that the eccentric lens is placed on the eccentricity instrument, and then the eccentricity of the lens can be tested on the eccentric lens; the decentered gauge can test the lens at the current angle and present the decentration on the display in the form of a decentered point.
S2, analyzing whether the initial eccentric point is in a first preset area or not;
whether the eccentric lens is eccentric or not is preliminarily analyzed by analyzing whether the initial eccentric point is in the first preset area or not, and if the eccentric point is not in the first preset area, the eccentric lens is already eccentric and needs to be directly debugged.
As shown in fig. 1, if the eccentricity of the product to be debugged needs to be within 4 grids, the operator locates the calibration center of the eccentricity gauge at a position of (-2, 0), i.e. the position of the second grid on the left side of the image display device, in order to facilitate the operation of the testing process, so that the dashed circle is the first preset area described in this embodiment.
S3, when the initial eccentric point is in a first preset area, rotating the eccentric lens to obtain eccentric points of the eccentric lens at a plurality of angles;
the user can rotate the eccentric lens on the eccentric appearance, and the eccentric appearance can continue to test the eccentric lens, constantly obtains the eccentric point under each angle on the display.
S4, analyzing whether the central deviation of the eccentric lens is larger than a preset central deviation or not according to the plurality of eccentric points;
the user only needs to obtain whether the center deviation is too large according to the distribution rule of the multiple eccentric points, whether the initial requirement of an operator is met is judged, namely, the center deviation is preset, and the preset center deviation can be freely set according to the requirement of the operator.
S5, when the initial eccentric point is not in a first preset area or the central deviation of the eccentric lens is larger than the preset central deviation, pressing the eccentric lens; jumping to execute step S3;
by comparing the central deviation of the eccentric lens with the preset central deviation, whether the requirement of the lens provided with the lens approximately meets the requirement can be simply analyzed; when the initial eccentric point is not in the first preset area or the central deviation of the eccentric lens is greater than the preset central deviation, the eccentric lens is already eccentric and needs to be directly debugged, namely, the debugging of the eccentric lens is realized by pressing the eccentric lens.
And S6, when the central deviation of the eccentric lens is less than or equal to the preset central deviation, curing the eccentric lens.
In this embodiment, after the debugging is accomplished, the eccentric lens of debugging all passes through glue and the picture frame is preliminary fixed, solidifies glue completely.
Whether the eccentric lens meets the requirements or not can be obtained by rotating the lens, obtaining a plurality of eccentric points and obtaining the difference between the central deviation and the preset deviation according to the eccentric points, and the testing process is simple and convenient.
Preferably, step S3 specifically includes:
s31, when the initial eccentric point or the current eccentric point is in a first preset area, clearing the eccentric point on the image display device;
and S32, rotating the eccentric lens at a preset speed to obtain the eccentric point of the eccentric lens at each angle.
Specifically, the eccentric instrument acquires the segregation points at regular time, so that when an operator rotates the eccentric lens, the eccentric lens can better obtain the eccentric points at all angles through uniform rotation, and the description degree of the eccentric points on the eccentric degree of the eccentric lens is increased.
Example 2
As shown in fig. 3, an eccentricity testing method includes the following steps:
s1, placing the eccentric lens on eccentric testing equipment; the eccentricity testing equipment is used for displaying an initial eccentricity point of the eccentric lens in the current state on image display equipment;
s2, analyzing whether the initial eccentric point is in a first preset area or not;
s3, when the initial eccentric point is in a first preset area, rotating the eccentric lens to obtain eccentric points of the eccentric lens at a plurality of angles;
s41, fitting according to the eccentric points to obtain a circle fitting curve;
s42, analyzing whether the radius of the circle fitting curve is larger than a preset radius or not;
s43, when the radius of the circle fitting curve is larger than a preset radius, the central deviation of the eccentric lens is larger than the preset central deviation;
and S44, when the radius of the circle fitting curve is smaller than or equal to the preset radius, the central deviation of the eccentric lens is smaller than or equal to the preset central deviation.
The image formed by the plurality of eccentric points is approximately round, so that a round fitting curve is obtained by fitting the plurality of eccentric points, whether the eccentric degree of the eccentric lens at each angle is too large is judged, and the accuracy is high.
S5, when the initial eccentric point is not in a first preset area or the central deviation of the eccentric lens is larger than the preset central deviation, pressing the eccentric lens; jumping to execute step S3;
and S6, when the central deviation of the eccentric lens is less than or equal to the preset central deviation, curing the eccentric lens.
Specifically, step S41 specifically includes:
s411, analyzing and obtaining a region where the gravity center of the eccentric point is located according to the positions of the plurality of eccentric points, and selecting the region where the gravity center of the eccentric point is located as a second preset region;
after the plurality of eccentric points are obtained, only the gravity center range of the plurality of eccentric points needs to be obtained, and the second preset area can be set according to the precision of the eccentric lens; specifically, a circle is drawn by taking the center of gravity of the eccentric point as the center of a circle and taking the connecting line of the center of the eccentric point and the new point of the first preset area as a radius to form a second preset area, namely a scattered point circle in the attached drawing.
S412, selecting a point in the second preset area, drawing a first circular curve, and enabling the first circular curve to at least comprise an eccentric point with a first preset proportion;
in this embodiment, the first predetermined ratio can be selected to be 0.6-0.9, and is selected according to the radius of the eccentric lens and the precision of the eccentric lens, and when the precision of the eccentric lens is higher or the radius of the eccentric lens is smaller, the larger the first predetermined ratio is selected.
And S414, determining the circle fitting curve according to the ratio of the radius of the first circle curve to the first preset proportion.
When drawing a circle-fitting curve, more eccentric points need to be included on and in the circle-fitting curve as much as possible, and after more eccentric points are included, a circle with the largest radius needs to be selected as the circle-fitting curve.
When the distance between the eccentric point outside the first circular curve and the first circular curve exceeds a preset distance, the eccentric point is an abnormal eccentric point;
steps S412 and S414 further include:
s413, analyzing whether the number of the abnormal eccentric points is larger than a preset number or not;
when the number of the abnormal eccentric points is larger than the preset number, jumping to execute the step S3; when the number of the abnormal eccentric points is less than or equal to the preset number, the step S414 is skipped.
Because the eccentric point in the first circular curve is partially the eccentric point caused by small jitter and falls into the first circular curve, and most of the eccentric points are the eccentric points meeting the requirement during the test of the eccentric lens, the eccentric points fall into the first circular curve.
When the eccentric lens is rotated, if the shaking of the eccentric lens is large, abnormal eccentric points are generated, and the testing process needs to be carried out at a small shaking, so that whether the lens meets the requirements is determined by analyzing the number of the abnormal eccentric points outside the first circular curve, and if the number of the abnormal eccentric points is large, because the operator shakes to a large extent when the eccentric lens is rotated, the testing error is caused, and the testing needs to be carried out again.
Preferably, step S414 specifically includes:
s4141, analyzing the ratio of the radius of the first circular curve to the proportion of eccentric points contained in the first circular curve;
s4142, selecting the first circular curve with the smallest ratio of the radius of the first circular curve to the proportion of the eccentric points included in the first circular curve as a circle fitting curve.
In the process of selecting the circle fitting curve, due to the fact that jitter may occur in the testing process, after the jitter occurs, the distance between eccentric points generated by the jitter is large, abnormal eccentric points can be removed through determination of the ratio of the first preset proportion with proper size, meanwhile, the first circle curve with the smallest ratio of the radius of the first circle curve to the first preset proportion is selected to serve as the circle fitting curve, and the circle fitting curve can be represented to a greater extent through the first circle curve.
Example 3
As shown in fig. 4, an eccentricity testing method includes the steps of:
s1, placing the eccentric lens on eccentric testing equipment; the eccentricity testing equipment is used for displaying an initial eccentricity point of the eccentric lens in the current state on image display equipment;
s2, analyzing whether the initial eccentric point is in a first preset area or not;
s3, when the initial eccentric point is in a first preset area, rotating the eccentric lens to obtain eccentric points of the eccentric lens at a plurality of angles;
s4, analyzing whether the central deviation of the eccentric lens is larger than a preset central deviation or not according to the plurality of eccentric points;
s51, when the initial eccentric point is not in the first preset area or the central deviation of the eccentric lens is larger than the preset central deviation, acquiring the position of the current eccentric point as a reference eccentric point;
s52, obtaining a theoretical adjusting direction according to the position of the reference eccentric point and the position of the first preset area; the theoretical adjusting direction points to the first preset area from a reference eccentric point;
s53, establishing a coordinate mapping relation between the image display equipment and the eccentric lens;
s54, obtaining the actual adjusting direction on the eccentric lens according to the theoretical adjusting direction and the coordinate mapping relation;
and S55, pressing the edge of the eccentric lens along the actual adjusting direction.
S56, re-acquiring the position of the current eccentric point, and observing whether the position of the current eccentric point is located in a first preset area;
s57, when the position of the current eccentric point is not located in a first preset area, jumping to execute the step S55;
and S58, curing the eccentric lens.
When the position of the current eccentric point is located within the first preset area, jumping to perform step S3.
And S6, when the central deviation of the eccentric lens is less than or equal to the preset central deviation, curing the eccentric lens.
After confirming that the eccentric lens is eccentric, the eccentric lens needs to be calibrated when the eccentric lens is in a static state and the deflection direction of the eccentric lens is confirmed, and the eccentric point is a characteristic for representing the eccentric degree of the eccentric lens.
After the position of the reference eccentric point and the position of the preset area are confirmed, the calibration direction of the eccentric lens can be obtained, and the actual adjusting direction on the eccentric lens can be obtained according to the corresponding relation between the eccentric lens and the image display equipment.
In the process of calibrating the eccentric lens, the eccentric testing equipment continuously acquires the current eccentric point, and an operator can observe the current eccentric point to acquire the calibration degree of the eccentric lens; whether the correction of the eccentric lens is finished or not can be analyzed by analyzing whether the current eccentric point is in the preset area or not.
Therefore, the operator can set the radius of the first preset area to be slightly smaller than the preset radius, when the eccentric point falls into the preset area, the radius of the circle fitting curve formed by the eccentric point is smaller than the preset radius, and the central deviation of the eccentric lens is smaller than or equal to the preset central deviation.
After the adjustment of the decentration point is completed, the decentered lens can be pre-fixed.
Example 4
An eccentricity testing method comprising the steps of:
s1, placing the eccentric lens on eccentric testing equipment; the eccentricity testing equipment is used for displaying an initial eccentricity point of the eccentric lens in the current state on image display equipment;
s2, analyzing whether the initial eccentric point is in a first preset area or not;
s31, when the initial eccentric point or the current eccentric point is in a first preset area, clearing the eccentric point on the image display equipment;
and S32, rotating the eccentric lens at a preset speed to obtain the eccentric point of the eccentric lens at each angle.
S411, analyzing to obtain a region where the center of gravity of the eccentric point is located according to the plurality of eccentric point positions, and selecting the region where the center of gravity of the eccentric point is located as a second preset region;
s412, selecting a point in the second preset area, drawing a first circular curve, and enabling the first circular curve to at least comprise an eccentric point with a first preset proportion;
s413, analyzing whether the number of the abnormal eccentric points is larger than a preset number or not;
when the number of the abnormal eccentric points is larger than the preset number, jumping to execute the step S3; when the number of the abnormal eccentric points is less than or equal to the preset number, the step S414 is skipped.
S4141, analyzing the ratio of the radius of the first circular curve to the proportion of the eccentric points contained in the first circular curve
S4142, selecting the first circular curve with the smallest ratio of the radius of the first circular curve to the proportion of the eccentric points included in the first circular curve as a circle fitting curve.
S42, analyzing whether the radius of the circle fitting curve is larger than a preset radius or not;
s43, when the radius of the circle fitting curve is larger than a preset radius, the central deviation of the eccentric lens is larger than the preset central deviation;
and S44, when the radius of the circle fitting curve is smaller than or equal to the preset radius, the central deviation of the eccentric lens is smaller than or equal to the preset central deviation.
S51, when the initial eccentric point is not in the first preset area or the central deviation of the eccentric lens is larger than the preset central deviation, acquiring the position of the current eccentric point as a reference eccentric point;
s52, obtaining a theoretical adjusting direction according to the position of the reference eccentric point and the position of the first preset area; the theoretical adjusting direction points to the first preset area from a reference eccentric point;
s53, establishing a coordinate mapping relation between the image display device and the eccentric lens;
s54, obtaining the actual adjusting direction on the eccentric lens according to the theoretical adjusting direction and the coordinate mapping relation;
and S55, pressing the edge of the eccentric lens along the actual adjusting direction.
S56, re-acquiring the position of the current eccentric point, and observing whether the position of the current eccentric point is located in a first preset area;
s57, when the position of the current eccentric point is not located in a first preset area, jumping to execute the step S55;
and S58, curing the eccentric lens.
And when the position of the current eccentric point is located in the first preset area, jumping to execute step S3.
S6, when the center deviation of the eccentric lens is less than or equal to the preset center deviation, curing the eccentric lens.
As shown in fig. 5 and 6, if the eccentricity degree of the eccentric lens needs to be adjusted within four cells, the preset radius is two cells; and (3) continuously rotating the eccentric lens when the initial eccentric point is in the first preset area, wherein the radius of the circle fitting curve formed by the obtained eccentric points is smaller than the preset radius, so that the central deviation of the eccentric lens is smaller than or equal to the preset central deviation, and an operator can directly cure the eccentric lens.
As shown in fig. 5 and 7, the first preset proportion can be selected to be 0.8, the initial eccentric point is located in the first preset area, the eccentric lens is continuously rotated, the obtained multiple eccentric points are drawn into a first circular curve, and meanwhile, since the eccentric point at the bottom right corner in fig. 7 is an abnormal eccentric point, the eccentric point at the bottom right corner is ignored when the circular fitting curve is fitted; meanwhile, in order to obtain a circle fitting curve with the largest radius, whether the ratio of the radius of each first circle curve after the circle fitting curve does not contain the abnormal eccentric point to the first preset ratio is smaller than a first preset parameter or not needs to be considered.
In the present state, when there is only one eccentric point outside the first circular curve, the radius is 1.375, and the ratio of the eccentric points included in the first circular curve is 0.958, so that the ratio of the radius of the first circular curve to the ratio of the eccentric points included in the first circular curve is 1.435.
As shown in fig. 8, when there is no eccentric point outside the first circular curve, the radius is 1.7, the ratio of the eccentric points included in the first circular curve is 1, and the ratio of the radius of the first circular curve to the ratio of the eccentric points included in the first circular curve is 1.7.
As shown in fig. 9, when there are four eccentric points outside the first circular curve, the radius is 1.27, the ratio of the eccentric points included in the first circular curve is 0.83, and the ratio of the radius of the first circular curve to the ratio of the eccentric points included in the first circular curve is 1.53.
Therefore, when there is only one eccentric point outside the first circular curve, the ratio of the radius of the first circular curve to the proportion of the eccentric points included in the first circular curve is minimized, and the first circular curve is used as a circle fitting curve.
As shown in fig. 10-14, the initial eccentric point is not located in the first preset area, and the eccentric lens is directly pressed, as shown in fig. 14, the position B of the eccentric lens is pressed, the eccentric point moves upward as shown in fig. 11, and after the eccentric lens moves into the first preset area, step S3 is started.
If the eccentric point shown in fig. 12 is obtained, the radius of the circle fitting curve is larger than two grids, and the eccentric lens is continuously pressed; if the eccentric point shown in fig. 13 is obtained, fitting is performed to obtain a circle fitting curve, and the radius of the circle fitting curve is smaller than two grids, so that the test is completed.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. An eccentricity testing method, characterized by comprising the steps of:
s1, placing the eccentric lens on eccentric testing equipment; the eccentricity testing equipment is used for displaying an initial eccentricity point of the eccentric lens in the current state on image display equipment;
s2, analyzing whether the initial eccentric point is in a first preset area or not;
s3, when the initial eccentric point is in a first preset area, rotating the eccentric lens to obtain eccentric points of the eccentric lens at a plurality of angles;
s4, analyzing whether the central deviation of the eccentric lens is larger than a preset central deviation or not according to the plurality of eccentric points;
s5, when the initial eccentric point is not in a first preset area or the central deviation of the eccentric lens is larger than the preset central deviation, pressing the eccentric lens; jumping to execute step S3;
step S5 specifically includes:
s51, when the initial eccentric point is not in the first preset area or the central deviation of the eccentric lens is larger than the preset central deviation, acquiring the position of the current eccentric point as a reference eccentric point;
s52, obtaining a theoretical adjusting direction according to the position of the reference eccentric point and the position of the first preset area; the theoretical adjusting direction points to the first preset area from a reference eccentric point;
s53, establishing a coordinate mapping relation between the image display device and the eccentric lens;
s54, obtaining the actual adjusting direction on the eccentric lens according to the theoretical adjusting direction and the coordinate mapping relation;
s55, pressing the edge of the eccentric lens along the actual adjusting direction;
step S55 is followed by:
s56, re-acquiring the position of the current eccentric point, and observing whether the position of the current eccentric point is located in a first preset area;
when the position of the current eccentric point is not located in the first preset area, jumping to execute step S55;
when the position of the current eccentric point is located in a first preset area, jumping to execute step S3;
step S56 is followed by:
s57, solidifying the eccentric lens;
and S6, when the central deviation of the eccentric lens is less than or equal to the preset central deviation, curing the eccentric lens.
2. The eccentricity test method according to claim 1, wherein step S3 specifically includes:
s31, when the initial eccentric point or the current eccentric point is in a first preset area, clearing the eccentric point on the image display device;
and S32, rotating the eccentric lens at a preset speed to obtain the eccentric point of the eccentric lens at each angle.
3. The eccentricity test method according to claim 1, wherein step S4 specifically includes:
s41, fitting according to the eccentric points to obtain a circle fitting curve;
s42, analyzing whether the radius of the circle fitting curve is larger than a preset radius or not;
s43, when the radius of the circle fitting curve is larger than a preset radius, the central deviation of the eccentric lens is larger than the preset central deviation;
and S44, when the radius of the circle fitting curve is smaller than or equal to the preset radius, the central deviation of the eccentric lens is smaller than or equal to the preset central deviation.
4. The eccentricity testing method according to claim 3, wherein step S41 specifically includes:
s411, analyzing and obtaining a region where the gravity center of the eccentric point is located according to the positions of the plurality of eccentric points, and selecting the region where the gravity center of the eccentric point is located as a second preset region;
s412, selecting a point in the second preset area, drawing a first circular curve, and enabling the first circular curve to at least comprise an eccentric point with a first preset proportion;
and S414, determining the circle fitting curve according to the ratio of the radius of the first circle curve to the first preset proportion.
5. An eccentricity test method according to claim 4, wherein:
when the distance between the eccentric point outside the first circular curve and the first circular curve exceeds a preset distance, the eccentric point is an abnormal eccentric point;
steps S412 and S414 further include:
s413, analyzing whether the number of the abnormal eccentric points is larger than a preset number or not;
when the number of the abnormal eccentric points is larger than the preset number, jumping to execute the step S3; when the number of the abnormal eccentric points is less than or equal to the preset number, the step S414 is skipped.
6. The eccentricity test method according to claim 4, wherein the step S414 specifically comprises:
s4141, analyzing the ratio of the radius of the first circular curve to the proportion of eccentric points contained in the first circular curve;
s4142, selecting the first circular curve with the smallest ratio of the radius of the first circular curve to the proportion of the eccentric points included in the first circular curve as a circle fitting curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210525775.5A CN114624010B (en) | 2022-05-16 | 2022-05-16 | Eccentricity testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210525775.5A CN114624010B (en) | 2022-05-16 | 2022-05-16 | Eccentricity testing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114624010A CN114624010A (en) | 2022-06-14 |
| CN114624010B true CN114624010B (en) | 2022-08-23 |
Family
ID=81907190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210525775.5A Active CN114624010B (en) | 2022-05-16 | 2022-05-16 | Eccentricity testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114624010B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114923668B (en) * | 2022-07-19 | 2022-12-13 | 嘉兴中润光学科技股份有限公司 | Lens testing module and lens testing method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0299841A (en) * | 1988-10-07 | 1990-04-11 | Olympus Optical Co Ltd | Eccentricity measuring apparatus for lens system |
| JPH06258182A (en) * | 1993-01-11 | 1994-09-16 | Ricoh Co Ltd | Method and apparatus for measuring eccentricity of aspherical lens |
| JP2000065681A (en) * | 1998-08-19 | 2000-03-03 | Asahi Optical Co Ltd | Measuring apparatus for decentering of lens |
| JP2013036898A (en) * | 2011-08-09 | 2013-02-21 | Olympus Corp | Eccentricity measuring device and eccentricity measuring method |
| CN104833320A (en) * | 2015-05-22 | 2015-08-12 | 丹阳丹耀光学有限公司 | Reflection-transmission eccentric instrument test platform and reflection-transmission eccentric instrument |
| CN107888907A (en) * | 2017-11-24 | 2018-04-06 | 信利光电股份有限公司 | One kind determines visual field method, system and a kind of determination visual field equipment |
| CN210533303U (en) * | 2019-09-23 | 2020-05-15 | 杭州志达光电有限公司 | Optical lens piece eccentric instrument |
| CN111175028A (en) * | 2020-02-21 | 2020-05-19 | 福建福特科光电股份有限公司 | Eccentricity detection device and method for small-caliber lens |
| CN111272111A (en) * | 2020-04-01 | 2020-06-12 | 宁波舜宇红外技术有限公司 | Eccentricity detection method and eccentricity detection device for lens |
| CN113470108A (en) * | 2021-09-06 | 2021-10-01 | 中导光电设备股份有限公司 | Wafer center offset detection method |
| CN215296216U (en) * | 2021-06-01 | 2021-12-24 | 丹阳市鑫烨光学仪器有限公司 | Visual eccentricity detection device for optical lens |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5946981B2 (en) * | 2014-03-04 | 2016-07-06 | 株式会社メニコン | Decentered contact lenses and decentered contact lens sets |
| JP7204428B2 (en) * | 2018-11-02 | 2023-01-16 | キヤノン株式会社 | Eccentricity measuring method, lens manufacturing method, and eccentricity measuring device |
-
2022
- 2022-05-16 CN CN202210525775.5A patent/CN114624010B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0299841A (en) * | 1988-10-07 | 1990-04-11 | Olympus Optical Co Ltd | Eccentricity measuring apparatus for lens system |
| JPH06258182A (en) * | 1993-01-11 | 1994-09-16 | Ricoh Co Ltd | Method and apparatus for measuring eccentricity of aspherical lens |
| JP2000065681A (en) * | 1998-08-19 | 2000-03-03 | Asahi Optical Co Ltd | Measuring apparatus for decentering of lens |
| JP2013036898A (en) * | 2011-08-09 | 2013-02-21 | Olympus Corp | Eccentricity measuring device and eccentricity measuring method |
| CN104833320A (en) * | 2015-05-22 | 2015-08-12 | 丹阳丹耀光学有限公司 | Reflection-transmission eccentric instrument test platform and reflection-transmission eccentric instrument |
| CN107888907A (en) * | 2017-11-24 | 2018-04-06 | 信利光电股份有限公司 | One kind determines visual field method, system and a kind of determination visual field equipment |
| CN210533303U (en) * | 2019-09-23 | 2020-05-15 | 杭州志达光电有限公司 | Optical lens piece eccentric instrument |
| CN111175028A (en) * | 2020-02-21 | 2020-05-19 | 福建福特科光电股份有限公司 | Eccentricity detection device and method for small-caliber lens |
| CN111272111A (en) * | 2020-04-01 | 2020-06-12 | 宁波舜宇红外技术有限公司 | Eccentricity detection method and eccentricity detection device for lens |
| CN215296216U (en) * | 2021-06-01 | 2021-12-24 | 丹阳市鑫烨光学仪器有限公司 | Visual eccentricity detection device for optical lens |
| CN113470108A (en) * | 2021-09-06 | 2021-10-01 | 中导光电设备股份有限公司 | Wafer center offset detection method |
Non-Patent Citations (2)
| Title |
|---|
| 光学镜头偏心误差的自动化测量技术研究;张强;《中国优秀博硕士学位论文全文数据库(硕士) 信息科技辑》;20190115(第01期);全文 * |
| 红外透镜偏心差的测量计算;马厉克等;《红外技术》;20160320(第03期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114624010A (en) | 2022-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104581136B (en) | The calibration method of image calibration system and stereo camera | |
| CN114624010B (en) | Eccentricity testing method | |
| US20030206277A1 (en) | Projector with adjustably positioned image plate | |
| EP0282369B1 (en) | Process for the automatic measuring of the convergence and for the determination of the necessary corrections of the deviators of a three-colour crt, and apparatus for carrying it out | |
| EP3384235A1 (en) | Method for measuring a measurement distance between a rotating laser and a laser receiver | |
| JP4536329B2 (en) | Eye point position determination method and eye point measurement system | |
| CN106501917A (en) | A kind of camera lens auxiliary focus adjustment method and device | |
| TWI606421B (en) | Method and device for fisheye camera automatic calibration | |
| CN103096006B (en) | A kind of projector equipment and projected picture correcting method thereof | |
| CN111833394A (en) | Camera calibration method and measuring method based on binocular measuring device | |
| CN101551232B (en) | Method and device for measuring cylindrical spacer | |
| CN111665025A (en) | Diopter measuring device, measuring system and diopter measuring method | |
| CN111678677B (en) | Measuring device and optical parameter measuring method | |
| CN113720282A (en) | Method and device for measuring flatness of tab | |
| JP2018027294A (en) | Method for calibrating working plane of medical detection apparatus | |
| CN109839061B (en) | Lens module detection method and system | |
| CN209417442U (en) | The adjustment test device of optics module in binocular helmet | |
| CN105333818B (en) | 3d space measuring method based on monocular-camera | |
| KR100780190B1 (en) | Apparatus and method for measuring angle of view | |
| KR20160042737A (en) | Correction system and method for stereoscopic display device | |
| JP5076938B2 (en) | Color measuring method and color measuring apparatus | |
| CN208908477U (en) | A kind of camera module optical center position-measurement device | |
| CN115866383A (en) | Active alignment assembly method and device for side chip, electronic equipment and medium | |
| CN212658419U (en) | Compact binocular image combination measuring device | |
| CN112880984A (en) | Measurement guidance method, device, equipment and storage medium for lens lensometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |