阅读说明：本技术 用于玻璃制品的测量方法、处理器和测量装置 (Measuring method, processor and measuring device for glass product ) 是由 周波 胡恒广 闫冬成 王丽红 李瑞佼 于 2021-08-06 设计创作，主要内容包括：本发明涉及一种用于玻璃制品的测量方法、处理器和测量装置,该测量方法包括：控制光源朝玻璃制品发射混合光束,混合光束包括至少两种不同波长的单色光；获取混合光束穿透玻璃制品后在玻璃制品外侧壁上形成的光斑图像,光斑图像中包括至少两种单色光分别在玻璃制品外侧壁上形成的光斑；根据光斑图像确定玻璃制品的壁厚L、外径R和内径r,能实时、快速地在线检测玻璃制品的壁厚L、外径R和内径r。(The invention relates to a measuring method, a processor and a measuring device for a glass product, the measuring method comprising: controlling a light source to emit a mixed beam toward the glass article, the mixed beam including monochromatic light of at least two different wavelengths; acquiring a light spot image formed on the outer side wall of the glass product after the mixed light beam penetrates through the glass product, wherein the light spot image comprises light spots formed on the outer side wall of the glass product by at least two monochromatic lights respectively; the wall thickness L, the outer diameter R and the inner diameter R of the glass product are determined according to the light spot image, and the wall thickness L, the outer diameter R and the inner diameter R of the glass product can be detected on line in real time and rapidly.)

1. A measuring method for a glass article, characterized in that the measuring method comprises:

controlling a light source (1) to emit a mixed light beam (3) towards a glass article (2), the mixed light beam (3) comprising monochromatic light of at least two different wavelengths;

obtaining a light spot image formed on the outer side wall of the glass product (2) after the mixed light beam (3) penetrates through the glass product (2), wherein the light spot image comprises light spots formed on the outer side wall of the glass product (2) by at least two monochromatic lights respectively;

determining a wall thickness L, an outer diameter R and an inner diameter R of the glass article (2) from the spot image.

2. The measurement method for glass articles according to claim 1, characterized in that the glass article (2) is transparent glass.

3. A measuring method for glass products according to claim 1, characterized in that the difference in wavelength between any two of the monochromatic lights of which the mixed light beam (3) consists is greater than 60 nm.

4. A measuring method for glass articles according to any of claims 1-3, characterized in that the determining of the wall thickness L, the outer diameter R and the inner diameter R of the glass article (2) from the spot image comprises:

determining a reference straight line (5) according to the setting direction of the light source (1);

determining a vertical distance measurement value between each light spot and the reference straight line (5) and a vertical distance measurement value between adjacent light spots according to the light spot images;

determining the wall thickness L, the outer diameter R and the inner diameter R of the glass product (2) according to the measured perpendicular distance between each light spot and the reference straight line (5) and the measured perpendicular distance between the adjacent light spots.

5. A measuring method for glass products according to claim 4, characterized in that the reference straight line (5) is an extension of the straight line on which the mixed light beam (3) does not enter the glass product (2).

6. The measurement method for glass articles according to claim 4, characterized in that said determining the wall thickness L, the outer diameter R and the inner diameter R of the glass article (2) from the perpendicular distance measurement of each of said spots from said reference line (5) and the perpendicular distance measurement between adjacent spots comprises:

inputting the vertical distance measurement value of each light spot and the reference straight line (5) and the vertical distance measurement value between the adjacent light spots into an intelligent algorithm model for calculation so as to determine the wall thickness L, the outer diameter R and the inner diameter R of the glass product (2).

7. The measurement method for glass articles according to claim 4, characterized in that said determining the wall thickness L, the outer diameter R and the inner diameter R of the glass article (2) from the perpendicular distance measurement of each of said spots from said reference line (5) and the perpendicular distance measurement between adjacent spots comprises:

inputting the vertical distance measurement between each of the light spots and the reference straight line (5) and the vertical distance measurement between adjacent light spots into a fitted curve model to determine the wall thickness L, the outer diameter R and the inner diameter R of the glass product (2).

8. The measurement method for glass articles according to claim 7, characterized in that the inputting of the perpendicular distance measurement between each of the light spots and the reference line (5) and the perpendicular distance measurement between adjacent light spots into a fitted curve model to determine the wall thickness L, the outer diameter R and the inner diameter R of the glass article (2) comprises:

obtaining a wall thickness sample value, an outer diameter sample value and an inner diameter sample value of the glass product (2);

acquiring vertical distance sample values of the light spots and the reference straight line (5) and vertical distance sample values between adjacent light spots;

performing curve fitting on a vertical distance sample value of each light spot and the reference straight line (5), a vertical distance sample value between adjacent light spots, the wall thickness sample value, the outer diameter sample value and the inner diameter sample value to obtain a fitted curve model;

inputting the vertical distance measurement between each of the light spots and the reference straight line (5) and the vertical distance measurement between adjacent light spots into a fitted curve model to determine the wall thickness L, the outer diameter R and the inner diameter R of the glass product (2).

9. A processor characterized by being configured to perform the measuring method for a glass article according to any one of claims 1 to 8.

10. A measuring device for a glass article, the measuring device comprising:

a light source (1) for emitting the mixed light beam (3), the mixed light beam (3) comprising monochromatic light of at least two different wavelengths;

the image acquisition equipment (4) is used for shooting the light spot image; and

the processor of claim 9.

Technical Field

The invention relates to the technical field of measuring equipment of glass products, in particular to a measuring method, a processor and a measuring device for the glass products.

Background

In the existing continuous production mode of glass products, the glass products need to be placed on a moving conveying channel, and some glass products have high precision requirements on the outer diameter, the inner diameter and the wall thickness, such as medicinal glass bottles, measuring cylinders and the like, but the current technology for precisely measuring the outer diameter, the inner diameter and the wall thickness of the glass products on line is not mature enough, and the glass products move on the conveying channel and have horizontal and/or vertical movement deviation, so that the technical parameters such as the outer diameter, the inner diameter and the wall thickness of the glass products cannot be precisely measured in real time.

Disclosure of Invention

The invention aims to provide a measuring method, a processor and a measuring device for glass products, which have the advantages of capability of measuring technical parameters such as the outer diameter, the inner diameter and the wall thickness of the glass products in real time on line and simplicity.

In order to achieve the above object, a first aspect of the present invention provides a measuring method for a glass article, the measuring method comprising:

controlling a light source to emit a mixed beam toward the glass article, the mixed beam including monochromatic light of at least two different wavelengths;

acquiring a light spot image formed on the outer side wall of the glass product after the mixed light beam penetrates through the glass product, wherein the light spot image comprises light spots formed on the outer side wall of the glass product by at least two monochromatic lights respectively;

and determining the wall thickness L, the outer diameter R and the inner diameter R of the glass product according to the spot image.

In embodiments of the invention, the glass article is a transparent glass.

In the embodiment of the invention, the wavelength difference between any two of the plurality of monochromatic lights composing the mixed light beam is more than 60 nm.

In an embodiment of the present invention, determining the wall thickness L, the outer diameter R, and the inner diameter R of the glass article from the speckle image comprises:

determining a reference straight line according to the setting direction of the light source;

determining a vertical distance measurement value between each light spot and a reference straight line and a vertical distance measurement value between adjacent light spots according to the light spot image;

and determining the wall thickness L, the outer diameter R and the inner diameter R of the glass product according to the measured vertical distance between each light spot and the reference straight line and the measured vertical distance between the adjacent light spots.

In embodiments of the present invention, the reference line is an extension of the line at which the mixed beam does not enter the glass article.

In an embodiment of the present invention, determining the wall thickness L, the outer diameter R, and the inner diameter R of the glass article based on the perpendicular distance measurement of each spot from the reference line and the perpendicular distance measurement between adjacent spots comprises:

and inputting the vertical distance measurement value of each light spot and the reference straight line and the vertical distance measurement value between adjacent light spots into an intelligent algorithm model for calculation so as to determine the wall thickness L, the outer diameter R and the inner diameter R of the glass product.

In an embodiment of the present invention, determining the wall thickness L, the outer diameter R, and the inner diameter R of the glass article based on the perpendicular distance measurement of each spot from the reference line and the perpendicular distance measurement between adjacent spots comprises:

the vertical distance measurements between each spot and the reference line and the vertical distance measurements between adjacent spots are input into a fitted curve model to determine the wall thickness L, the outer diameter R, and the inner diameter R of the glass article.

In an embodiment of the present invention, inputting the perpendicular distance measurements between each spot and the reference line and the perpendicular distance measurements between adjacent spots into the fitted curve model to determine the wall thickness L, the outer diameter R, and the inner diameter R of the glass article comprises:

obtaining a wall thickness sample value, an outer diameter sample value and an inner diameter sample value of a glass product;

acquiring a vertical distance sample value of each light spot and a reference straight line and a vertical distance sample value between adjacent light spots;

performing curve fitting on a vertical distance sample value of each light spot and a reference straight line, a vertical distance sample value and a wall thickness sample value between adjacent light spots, an outer diameter sample value and an inner diameter sample value to obtain a fitting curve model;

the vertical distance measurements between each spot and the reference line and the vertical distance measurements between adjacent spots are input into a fitted curve model to determine the wall thickness L, the outer diameter R, and the inner diameter R of the glass article.

A second aspect of the invention provides a processor configured to perform the above-described measurement method for a glass article.

A third aspect of the invention provides a measuring device for a glass article, the measuring device comprising:

the light source is used for emitting a mixed light beam, and the mixed light beam comprises at least two monochromatic lights with different wavelengths; the image acquisition equipment is used for shooting a light spot image; and

the processor described above.

Through above-mentioned technical scheme, set up the mixed light beam that the light source transmission is used for piercing through glassware, can disperse because the refracting index is different when the multiple monochromatic light that constitutes mixed light beam gets into glassware, the monochromatic light after the dispersion can form the facula in different positions when wearing out glassware, obtain behind the facula image according to each facula different positions on glassware lateral wall calculate glassware's wall thickness L, external diameter R and internal diameter R, this kind of measurement mode does not receive glassware motion state's influence, can be real-time, the wall thickness L of quick on-line measuring glassware, external diameter R and internal diameter R.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of a measuring device for glass articles in an embodiment of the present invention;

FIG. 2 is a schematic flow chart of a measurement method for a glass article in an embodiment of the present invention.

Description of the reference numerals

1 light source 2 glass article

3 mixed beam 301 red beam

302 green light beam 303 blue light beam

4 reference straight line of image acquisition device 5

L wall thickness R external diameter

r inner diameter

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

The invention provides a measuring method for a glass product in one embodiment, which is applied to the technical field of measuring equipment of the glass product, wherein the glass product 2 in the embodiment comprises a glass tube, a measuring cylinder or other glass products with higher requirements on measuring precision of wall thickness L, outer diameter R and inner diameter R. Specifically, as shown in fig. 2, the measurement method includes the following steps:

step S101: controlling a light source 1 to emit a mixed light beam 3 towards a glass product 2, the mixed light beam 3 comprising monochromatic light of at least two different wavelengths;

step S102: acquiring a light spot image formed on the outer side wall of the glass product 2 after the mixed light beam 3 penetrates through the glass product 2, wherein the light spot image comprises light spots formed on the outer side wall of the glass product 2 by at least two monochromatic lights respectively;

step S103: the wall thickness L, the outer diameter R and the inner diameter R of the glass article 2 are determined from the spot image.

It can be understood that, as shown in fig. 1, a production line of the glass product 2 is provided with a measuring device for measuring the wall thickness L, the outer diameter R and the inner diameter R of the glass product 2, the measuring device comprises a light source 1, an image acquisition device 4 and a processor, and the light source 1 and the image acquisition device 4 are electrically connected with the processor. The glass product 2 is required to be placed on a moving transportation path in a continuous production process, so that the glass product 2 is always in a moving state, and the processor controls the light source 1 to emit the mixed light beam 3 to a position on the outer side wall of the glass product 2, wherein the position where the mixed light beam 3 irradiates on the outer side wall of the glass product 2 is D0, and the mixed light beam 3 irradiates on the side wall of the glass product 2 at an incident angle β. Because the mixed light beam 3 comprises at least two monochromatic light beams with different wavelengths, the mixed light beam 3 is dispersed at the position D0 due to different refractive indexes of the monochromatic light beams in the glass, namely, one mixed light beam 3 is dispersed into a plurality of monochromatic light beams, the plurality of monochromatic light beams penetrate through the outer side wall of one side of the glass product 2 to continuously irradiate forwards and penetrate out of the outer side wall of the other side of the glass product 2, and a plurality of monochromatic light beams correspondingly form a plurality of light spots at different positions on the outer side wall when penetrating out of the glass product 2. The mixed light beam 3 in this embodiment is preferably a mixed light beam 3 composed of three monochromatic lights of different colors, and the mixed light beam 3 forms three light spots at different positions on the outer side wall when passing out of the glass product 2, the positions of the three light spots being D1, D2 and D3, respectively.

The processor controls the image acquisition device 4 to acquire a light spot image formed on the outer side wall of the glass product 2 after the mixed light beam 3 penetrates through the glass product 2, and transmits the light spot image to the processor after the acquisition is completed, and the processor processes the light spot image to determine the wall thickness L, the outer diameter R and the inner diameter R of the glass product 2.

According to the measuring method for the glass product 2, provided by the embodiment of the invention, the mixed light beam 3 consisting of the monochromatic light with different wavelengths is emitted to the glass product 2 through the light source 1, the mixed light beam 3 is irradiated into the glass product 2 and then divided into the monochromatic light beams and then penetrates out, light spots at different positions are formed on the outer side wall when the mixed light beam penetrates out, the light spot images are obtained and processed to determine the wall thickness L, the outer diameter R and the inner diameter R of the glass product 2, the measuring method is simple and easy to operate, the data of the wall thickness L, the outer diameter R and the inner diameter R of the glass product can be measured on line in real time, and the measuring precision is higher.

In an embodiment of the present invention, the glass product 2 is transparent glass, so as to prevent the colored glass product 2 from absorbing monochromatic light, which may result in the monochromatic light not smoothly penetrating through the glass product 2, and further affect the accuracy of the measurement. Further, the shape of the glass product 2 in the present embodiment is preferably circular, which is more favorable for each monochromatic light to smoothly pass through one side of the glass product 2 and out the other side for measurement.

In an embodiment of the present invention, the wavelength difference between any two of the plurality of monochromatic lights composing the mixed light beam 3 is greater than 60nm, so that the monochromatic lights of the beams are more dispersed after being refracted to increase the distance between the light spots on the outer side wall of the glass product 2, which is beneficial to further improving the measurement accuracy. In this embodiment, the mixed light beam 3 is preferably a mixed light beam 3 composed of monochromatic lights with three different wavelengths, namely, red, green and blue, the mixed light beam 3 is emitted by the light source 1 and then is dispersed into a red light beam 301, a green light beam 302 and a blue light beam 303 at the position D0 of the glass product 2, the red light beam 301 forms a red light spot at the position D1, the green light beam 302 forms a green light spot at the position D2, and the blue light beam 303 forms a blue light spot at the position D3.

In one embodiment of the present invention, determining the wall thickness L, the outer diameter R, and the inner diameter R of the glass article 2 from the speckle image comprises:

determining a reference straight line 5 according to the setting direction of the light source 1;

determining a vertical distance measurement value between each light spot and the reference straight line 5 and a vertical distance measurement value between adjacent light spots according to the light spot images;

the wall thickness L, the outer diameter R and the inner diameter R of the glass product 2 are determined from the perpendicular distance measurement of each spot from the reference line 5 and the perpendicular distance measurement between adjacent spots, respectively.

It can be understood that the setting direction and position of the light source 1 are always determined to be unchanged, the setting direction and position of the image capturing device 4 are also always determined to be unchanged, and therefore the reference straight line 5 determined according to the setting direction of the light source 1 is also determined to be unchanged, and the image capturing device 4 is set according to the position of the reference straight line 5, so that the reference straight line 5 is always located at a position determined by a certain coordinate in the light spot image captured by the image capturing device 4.

In the embodiment, the mixed light beam 3 is composed of three monochromatic lights with different wavelengths, three light spots are formed at positions D1, D2 and D3 on the outer side wall of the glass product 2 when the three monochromatic lights penetrate through the glass product 2, the image acquisition device 4 transmits the light spot images after acquiring the light spot images to a processor for image recognition processing so as to determine a vertical distance measurement value S1 between D1 and a reference straight line 5, determine a vertical distance measurement value S2 between D2 and the reference straight line 5, determine a vertical distance measurement value S3 between D3 and the reference straight line 5, determine a vertical distance measurement value T1 between D1 and D2, determine a vertical distance measurement value T2 between D2 and D3, and the processor further determines the wall thickness L, the outer diameter R and the inner diameter R of the glass product 2 according to S1, S2, S3, T1 and T2.

Even if the glassware 2 on the transportation channel has a certain amount of deviation in the horizontal direction and/or the vertical direction due to accident, the measured values of S1, S2 and S3 have a slight error, but the measured values of T1 and T2 have no influence, and the accuracy of the wall thickness L, the outer diameter R and the inner diameter R determined according to the five measured values is slightly influenced, but large-amplitude errors cannot occur, namely, the accuracy of the wall thickness L, the outer diameter R and the inner diameter R in the case is still guaranteed, so that the glassware 2 can still be accurately measured in a dynamic environment.

In one embodiment of the present invention, when the number of monochromatic light of different wavelengths is larger, the more spots are formed on one side of the glass product 2, the larger the number of the vertical distance measurement values between each spot and the reference straight line 5 and the vertical distance measurement values between adjacent spots, and the time consumption for calculating the wall thickness L, the outer diameter R, and the inner diameter R of the glass product 2 is increased, but the accuracy of calculation is further increased.

In an embodiment of the present invention, the reference straight line 5 is an extension line of a straight line where the mixed light beam 3 does not enter the glass product 2, which is beneficial to fixing the position of the reference straight line 5 and facilitating obtaining, and improves the simplicity of calculation while reducing the influence factors of the calculation results of the wall thickness L, the outer diameter R and the inner diameter R of the glass product 2.

In one embodiment of the invention, determining the wall thickness L, the outer diameter R and the inner diameter R of the glass article 2 from the perpendicular distance measurement of each spot from the reference line 5 and the perpendicular distance measurement between adjacent spots comprises:

the vertical distance measurement of each spot from the reference line 5 and the vertical distance measurement between adjacent spots are input into an intelligent algorithm model for calculation to determine the wall thickness L, the outer diameter R and the inner diameter R of the glass product 2.

It is understood that the intelligent algorithm includes at least one of a BP neural network or a radial basis function neural network, and the intelligent algorithm model is preferably a BP neural network model in the present embodiment. Before the processor calculates the wall thickness L, the outer diameter R and the inner diameter R of the glass product 2 by adopting the BP neural network, the BP neural network model needs to be trained to obtain a mature BP neural network model, so that the accuracy of the calculation result is ensured.

It is understood that obtaining a mature BP neural network model comprises the following steps:

obtaining a wall thickness sample value, an outer diameter sample value and an inner diameter sample value of the glass product 2, specifically, selecting a plurality of glass products 2 with different sizes and obtaining the three sample values of each glass product 2 by a direct measurement mode (such as a vernier caliper measurement);

acquiring a light spot image sample set which comprises a plurality of light spot sample images, specifically, carrying out a transportation test on a transportation channel on which the glass product 2 for the test is placed, and acquiring light spot images of the corresponding glass products 2 to form the light spot image sample set;

acquiring vertical distance sample values of a plurality of groups of light spots and a reference straight line 5 and vertical distance sample values between a plurality of groups of adjacent light spots according to a light spot image sample set, wherein the vertical distance sample values of the plurality of groups of light spots and the reference straight line 5 and the vertical distance sample values between the plurality of groups of adjacent light spots in the embodiment comprise sample values of five data, namely S1, S2, S3, T1 and T2;

constructing a BP neural network model, wherein an input layer of the BP neural network model comprises 5 neurons so as to correspond to data input of S1, S2, S3, T1 and T2; the output layer comprises 3 neurons and outputs data corresponding to the wall thickness L, the outer diameter R and the inner diameter R;

inputting the vertical distance sample values of the multiple groups of light spots and the reference straight line 5 and the vertical distance sample values between the multiple groups of adjacent light spots into a BP neural network model for training, and stopping training until preset conditions are met.

After the training of the BP neural network model is completed, the vertical distance measurement value between each light spot and the reference straight line 5 and the vertical distance measurement value between adjacent light spots are input into the BP neural network model for calculation, so that the wall thickness L, the outer diameter R and the inner diameter R of the glass product 2 can be determined, the calculation time is short, and the calculation accuracy can be ensured.

In another embodiment of the invention, determining the wall thickness L, the outer diameter R and the inner diameter R of the glass article 2 from the perpendicular distance measurement of each spot from the reference line 5 and the perpendicular distance measurement between adjacent spots comprises:

the perpendicular distance measurements between each spot and the reference line 5 and between adjacent spots are input into a fitted curve model to determine the wall thickness L, the outer diameter R and the inner diameter R of the glass article 2.

In one embodiment of the present invention, inputting the perpendicular distance measurements between each spot and the reference line 5 and the perpendicular distance measurements between adjacent spots into the fitted curve model to determine the wall thickness L, the outer diameter R, and the inner diameter R of the glass article 2 comprises:

acquiring a wall thickness sample value, an outer diameter sample value and an inner diameter sample value of the glass product 2;

acquiring a vertical distance sample value of each light spot and a reference straight line 5 and a vertical distance sample value between adjacent light spots;

performing curve fitting on a vertical distance sample value, a wall thickness sample value, an outer diameter sample value and an inner diameter sample value of each light spot and the reference straight line 5 to obtain a fitting curve model;

the perpendicular distance measurements between each spot and the reference line 5 and between adjacent spots are input into a fitted curve model to determine the wall thickness L, the outer diameter R and the inner diameter R of the glass article 2.

It will be appreciated that the processor needs to build a fitted curve model that ensures the accuracy of the calculation before using the fitted curve model to calculate the wall thickness L, the outer diameter R and the inner diameter R of the glass article 2. In the embodiment, the manner of obtaining the wall thickness sample value, the outer diameter sample value and the inner diameter sample value of the glass product 2 is consistent with the manner adopted in the embodiment comprising the BP neural network model; the manner of obtaining the vertical distance sample value of each light spot and the reference straight line 5 and the vertical distance sample value between adjacent light spots is the same as that adopted in the embodiment including the BP neural network model, and is not described here again.

After all the sample values are obtained, inputting the sample values into mathematical software (such as matlab software) to perform curve fitting (such as a least square method) to establish mathematical relations among a vertical distance sample value between each light spot and a reference straight line 5, a vertical distance sample value and a wall thickness sample value between adjacent light spots, and an outer diameter sample value and an inner diameter sample value, namely obtaining mathematical function models among the vertical distance sample value between each light spot and the reference straight line 5, the vertical distance sample value and the wall thickness sample value between adjacent light spots, and the outer diameter sample value and the inner diameter sample value, obtaining one mathematical function model after the fitting of a preset number of groups is completed, and inputting a brand new group of sample data of the vertical distance sample value between each light spot and the reference straight line 5 and the vertical distance sample value between adjacent light spots into the mathematical function model, checking whether the mathematical function model is qualified, and when the values of the wall thickness L, the outer diameter R and the inner diameter R of the glass product 2 calculated by the mathematical function model and the difference values among the wall thickness sample value, the outer diameter sample value and the inner diameter sample value are all smaller than a second preset threshold value, the mathematical function model is qualified, and at the moment, fitting can be finished; when the values of the wall thickness L, the outer diameter R and the inner diameter R of the glass product 2 calculated by the mathematical function model and the difference values among the wall thickness sample value, the outer diameter sample value and the inner diameter sample value are all larger than a second preset threshold value, the mathematical function model is unqualified, and at the moment, more groups of sample values are required to be adopted for fitting and inspection until the mathematical function model obtained by fitting is qualified.

After the fitting curve model is constructed, the vertical distance measurement value between each light spot and the reference straight line 5 and the vertical distance measurement value between adjacent light spots are input into the fitting curve model to be calculated, and the wall thickness L, the outer diameter R and the inner diameter R of the glass product 2 can be determined.

Another embodiment of the present invention provides a processor configured to perform the measurement method for a glass article 2 provided by the above embodiments.

Another embodiment of the present invention provides a measuring device for a glass article 2, the measuring device comprising:

the light source 1 is arranged on one side of the glass product 2 and used for emitting a mixed light beam 3, wherein the mixed light beam 3 comprises monochromatic light with at least two different wavelengths.

In an embodiment of the present invention, instead of the mixed light beam 3, a plurality of coaxial monochromatic lights with different wavelengths may be used, and the measurement effect achieved by this method is the same as that achieved by the mixed light beam 3.

The image acquisition device 4 is arranged on one side of the glass product 2 far away from the light source 1 and is used for shooting a light spot image, and the image acquisition device 4 in the embodiment is preferably a camera; and the processor provided in the above embodiment, the light source 1 and the image capturing device 4 are electrically connected to the processor.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited thereto. Within the scope of the technical idea of the present application, numerous simple modifications can be made to the technical solution of the present application, including combinations of the specific technical features in any suitable way, and in order to avoid unnecessary repetition, various possible combinations will not be further described herein. These simple modifications and combinations should also be considered as disclosed in the present application, and all fall within the scope of protection of the present application.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary and not to be construed as limiting the present application, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.