Intelligent monitoring method of lens anti-fog effect based on optical analysis

Abstract

The present invention relates to the field of physical analysis technology, and specifically to an intelligent monitoring method for the anti-fog effect of a lens based on optical analysis, including: obtaining a transmittance curve of each detection point in each humidity area in the lens area, obtaining a transmittance anti-fog index of each detection point according to the transmittance values ​​of all wavelengths on the transmittance curve of each detection point, and then obtaining the transmittance index of each humidity area, dividing the minimum circumscribed rectangle of the lens area into a number of rectangular areas and screening out the eyeball area, obtaining the overall anti-fog effect of the lens according to the distance between the centroid of all rectangular areas and the eyeball area and the transmittance index, and judging the anti-fog effect of the lens. The present invention determines the light transmittance of the lens at different humidity levels by analyzing the different humidity distribution conditions of the lens during human wearing, and determines the overall anti-fog effect of the current lens according to the anti-fog importance of different positions, thereby optimizing the monitoring method for the anti-fog effect of the lens.

Description

Technical Field

[0001] The present invention relates to the field of physical analysis technology, and in particular to an intelligent monitoring method for anti-fogging effect of lenses based on optical analysis. Background Art

[0002] After the lenses are produced, the anti-fog effect of the lenses needs to be tested. Generally, the anti-fog test requires water droplets to contact the surface of the anti-fog film on the lens. When the water droplets spread out to form a uniform water film, the light transmittance of the current anti-fog film is tested by using a UV spectrophotometer. The anti-fog condition of the current lens is determined by the light transmittance of the anti-fog film. However, when the human body breathes, the lens will be materialized, and the water film will generally not be evenly distributed. The above method cannot determine the anti-fog condition of the lens when worn by the human body.

[0003] When people wear glasses, the surrounding air forms a dynamic flow field as they breathe. This flow field will cause uneven distribution of moisture on the lens surface. This uneven humidity distribution makes it difficult to determine the anti-fog effect by conventional methods, and it is impossible to effectively ensure the anti-fog effect of the lenses. Summary of the invention

[0004] The present invention provides an intelligent monitoring method for anti-fogging effect of lenses based on optical analysis to solve the existing problems.

[0005] The intelligent monitoring method of the anti-fogging effect of lenses based on optical analysis of the present invention adopts the following technical solutions:

[0006] An embodiment of the present invention provides an intelligent monitoring method for anti-fogging effect of lenses based on optical analysis, the method comprising the following steps:

[0007] Obtaining a transmittance curve for each detection point in each humidity zone in the lens area; the horizontal axis of the transmittance curve is the wavelength, and the vertical axis is the transmittance value, and each wavelength corresponds to a transmittance value with an anti-fog film and a transmittance value without an anti-fog film;

[0008] According to the transmittance values ​​of all wavelengths with and without anti-fog film on the transmittance curve of each test point, the transmittance anti-fog index of each test point is obtained;

[0009] According to the light transmittance anti-fog index of all the test points in each humidity zone and the number of test points, the light transmittance index of each humidity zone is obtained;

[0010] The minimum circumscribed rectangle of the lens area is equally divided into a number of rectangular areas; an eyeball area is screened and merged in the minimum circumscribed rectangle of the lens area; the overall anti-fog effect of the lens is obtained according to the distance between the centroid of all rectangular areas and the eyeball area and the transmittance index of all humidity areas; the anti-fog effect of the lens is judged according to the overall anti-fog effect of the lens.

[0011] Furthermore, the light transmittance anti-fog index of each detection point is obtained according to the light transmittance values ​​of the anti-fog film and the anti-fog film at all wavelengths on the light transmittance curve of each detection point, and the specific steps include the following:

[0012] The portion of the transmittance curve of each detection point whose wavelength is in the preset first wavelength range is recorded as the first segment of the transmittance curve of each detection point;

[0013] The portion of the transmittance curve of each detection point whose wavelength is within the preset second wavelength range is recorded as the second segment of the transmittance curve of each detection point;

[0014] According to the transmittance values ​​of the anti-fog film and the anti-fog film at all wavelengths in the first section of the transmittance curve of each test point, the difference in the transmittance of the anti-fog film and the anti-fog film in the first section of the transmittance curve of each test point is obtained;

[0015] According to the difference in transmittance with and without the anti-fog film in the first section of the transmittance curve of each test point and the transmittance values ​​with and without the anti-fog film at all wavelengths in the second section of the transmittance curve of each test point, the transmittance anti-fog index of each test point is obtained.

[0016] Furthermore, according to the transmittance values ​​of the anti-fog film and the anti-fog film at all wavelengths in the first section of the transmittance curve of each detection point, the specific calculation formula for obtaining the difference in transmittance between the anti-fog film and the anti-fog film in the first section of the transmittance curve of each detection point is:

[0017]

[0018] In the formula, G x N1 represents the difference in transmittance between the presence of an anti-fog film and the absence of an anti-fog film in the first segment of the transmittance curve at the xth detection point; x Indicates the number of wavelengths in the first segment of the transmittance curve of the xth detection point; L x,i is the transmittance value of the anti-fog film at the i-th wavelength in the first section of the transmittance curve of the x-th detection point; L x,i-1 is the transmittance value of the anti-fog film at the i-1th wavelength in the first section of the transmittance curve of the xth detection point; L ′x,i is the transmittance value of the i-th wavelength in the first section of the transmittance curve of the x-th detection point without the anti-fog film; L ′ x,i-1 is the transmittance value of the x-th detection point at the i-1th wavelength in the first section of the transmittance curve without the anti-fog film.

[0019] Furthermore, according to the difference in transmittance between the presence of the anti-fog film and the absence of the anti-fog film in the first section of the transmittance curve of each detection point and the transmittance values ​​of the presence of the anti-fog film and the absence of the anti-fog film at all wavelengths in the second section of the transmittance curve of each detection point, the specific calculation formula for the transmittance anti-fog index of each detection point is obtained as follows:

[0020]

[0021] In the formula, E x Indicates the transmittance anti-fog index of the xth test point; G x N2 represents the difference in transmittance between the first segment of the transmittance curve at the xth detection point with and without the anti-fog film; x represents the number of wavelengths in the second segment of the transmittance curve of the xth detection point; L x,j Indicates that the transmittance value of the anti-fog film exists at the jth wavelength in the second section of the transmittance curve of the xth detection point; L x,max Indicates the maximum value of the transmittance of the anti-fog film at all wavelengths on the transmittance curve at the xth detection point; L ′ x,max It represents the maximum value of the transmittance values ​​of all wavelengths without anti-fog film on the transmittance curve of the x-th detection point; || is the absolute value function.

[0022] Furthermore, the light transmittance index of each humidity area is obtained according to the light transmittance anti-fog index of all detection points in each humidity area and the number of detection points, and the specific steps include the following:

[0023] According to the anti-fog index of light transmittance at all test points in each humidity zone, the stability of each humidity zone is obtained;

[0024] According to the stability of each humidity area, the transmittance anti-fog index of all test points and the number of test points, the transmittance index of each humidity area is obtained.

[0025] Furthermore, according to the stability of each humidity area, the light transmittance anti-fog index of all detection points and the number of detection points, the specific calculation formula for the light transmittance index of each humidity area is obtained as follows:

[0026]

[0027] In the formula, Rv Represents the transmittance index of the vth humidity zone; N v represents the number of detection points in the vth humidity zone; E v,y It represents the anti-fog index of the light transmittance at the yth detection point in the vth humidity zone. It represents the average value of the light transmittance anti-fog index of all test points in the vth humidity zone; It represents the stability of the vth humidity area; e is a natural constant; N represents the number of all detection points in the lens area; || is the absolute value function; exp() is an exponential function with the natural constant as the base.

[0028] Furthermore, the step of selecting and merging an eyeball region from the minimum circumscribed rectangle of the lens region includes the following specific steps:

[0029] In the minimum circumscribed rectangle of the lens area, a merged area of ​​rectangular areas whose centers in the middle row are equal to the number of preset eyeball rectangular areas is recorded as the eyeball area.

[0030] Furthermore, the overall anti-fog effect of the lens is obtained according to the distance between the centroid of all rectangular areas and the eyeball area and the transmittance index of all humidity areas, and the specific steps include the following:

[0031] The reciprocal of the distance between each rectangular area and the centroid of the eyeball area is recorded as the importance of each rectangular area;

[0032] The average value of the light transmittance indexes of all humidity areas where each rectangular area is located is recorded as the light transmittance index of each rectangular area;

[0033] According to the importance and transmittance index of each rectangular area, the overall anti-fog effect of the lens is obtained.

[0034] Furthermore, the specific calculation formula for obtaining the overall anti-fog effect of the lens according to the importance and transmittance index of each rectangular area is:

[0035]

[0036] Among them, F represents the overall anti-fog effect of the lens; M represents the number of rectangular areas; k a Indicates the importance of the a-th rectangular area; R a Represents the transmittance index of the a-th rectangular area; norm() is a linear normalization function.

[0037] Furthermore, the anti-fog effect of the lens is determined according to the overall anti-fog effect of the lens, and the specific steps include the following:

[0038] The lenses whose overall anti-fog effect is less than or equal to the preset light transmittance index threshold are judged as unqualified lenses;

[0039] The lenses whose overall anti-fog effect is greater than the preset light transmittance index threshold are judged as qualified lenses.

[0040] The beneficial effects of the technical solution of the present invention are:

[0041] In the embodiment of the present invention, a transmittance curve of each detection point in each humidity zone in the lens area is obtained; the horizontal axis of the transmittance curve is the wavelength, and the vertical axis is the transmittance value, each wavelength corresponds to a transmittance value with an anti-fog film and a transmittance value without an anti-fog film, which is helpful to analyze the anti-fog effect of the lens under different conditions and provide a data basis for subsequent evaluation; according to the transmittance values ​​of the presence and absence of the anti-fog film at all wavelengths on the transmittance curve of each detection point, the transmittance anti-fog index of each detection point is obtained, which is helpful to quantify the anti-fog performance of each detection point; according to all detection values ​​in each humidity zone The transmittance anti-fog index of the point and the number of detection points are used to obtain the transmittance index of each humidity area, which is helpful to comprehensively consider the anti-fog performance of the entire humidity area; the minimum circumscribed rectangle of the lens area is divided into several rectangular areas of equal size, and an eyeball area is screened and merged in the minimum circumscribed rectangle of the lens area; according to the distance between the centroid of all rectangular areas and the eyeball area and the transmittance index of all humidity areas, the overall anti-fog effect of the lens is obtained, and different anti-fog importance is set according to the different clarity requirements of different rectangular areas in the lens area; according to the overall anti-fog effect of the lens, the anti-fog effect of the lens is judged. So far, the present invention determines the light transmittance of the lens at different humidity through the different humidity distribution of the lens during human wearing, performs difference detection based on the light transmittance of different wavelengths of the detection points at different humidity and the light transmittance under the normal lens, and determines the overall anti-fog effect of the lens according to the anti-fog importance of different positions of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 The present invention is a flowchart of the steps of the intelligent monitoring method of the anti-fog effect of lenses based on optical analysis.

[0044] Figure 2 A schematic diagram of a spectacle lens provided in this embodiment. DETAILED DESCRIPTION

[0045] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, features and effects of the intelligent monitoring method of the anti-fog effect of the lens based on optical analysis proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0046] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0047] The specific scheme of the intelligent monitoring method for anti-fogging effect of lenses based on optical analysis provided by the present invention is described in detail below with reference to the accompanying drawings.

[0048] See also Figure 1 , which shows a flowchart of the steps of an intelligent monitoring method for anti-fogging effect of lenses based on optical analysis provided by an embodiment of the present invention, the method comprising the following steps:

[0049] Step S001: Obtain a transmittance curve of each detection point in each humidity zone in the lens area; the horizontal axis of the transmittance curve is wavelength, and the vertical axis is transmittance value, and each wavelength corresponds to a transmittance value with an anti-fog film and a transmittance value without an anti-fog film.

[0050] An infrared thermal imager is used to obtain a background image without a lens and a thermal image of a lens with obvious fog, and the two images are differentiated to obtain a lens area. The lens area is divided into several humidity areas using a region growing algorithm, which is a well-known technology; several detection points are randomly selected in each humidity area, and the number of detection points is proportional to the area of ​​the humidity area. In this example, 1:10 is used as an example for description;

[0051] For each test point, a UV-visible spectrophotometer is used to measure the light transmittance of the lens with and without an anti-fog film. Light of different wavelengths (such as ultraviolet light and visible light) is used to measure the transmittance value through the lens, and a transmittance curve of each test point on the lens with and without an anti-fog film is obtained. The horizontal axis of the transmittance curve is the wavelength value of the light, and the vertical axis is the transmittance value.

[0052] It should be noted that the lens sample is placed in the experimental environment to ensure that it is exposed to the control range of the humidity control device. The humidity is initially set to a low level to ensure that the lens is dry and clear; the humidity is gradually increased until obvious fog is generated on all lens surfaces, and an infrared thermal imager is used to capture the thermal image of each lens in order to determine different humidity areas. In this embodiment, the lens sample is a spectacle lens, and the schematic diagram of the spectacle lens is shown in FIG. Figure 2 shown.

[0053] Step S002: Obtaining the transmittance anti-fog index of each detection point according to the transmittance values ​​of all wavelengths with and without the anti-fog film on the transmittance curve of each detection point.

[0054] Generally, a UV spectrophotometer can be used to determine the current light transmittance of the lens with and without an anti-fog film. The higher the light transmittance after using the anti-fog film compared to without the anti-fog film, the better the effect of the current anti-fog film.

[0055] Because the current transmittance is determined by different wavelengths during the light transmittance experiment, the wavelength used by the UV spectrophotometer to measure the transmittance is generally 300 to 800; generally, in the 300 to 500nm region, as the wavelength value continues to increase, the greater the increase in transmittance, the better the current light transmittance effect; the transmittance reaches the maximum transmittance in the 500 to 800nm ​​region, followed by a very small attenuation, and then remains stable. At this time, the greater the transmittance, the better the current light transmittance effect, and the more stable the transmittance, the more stable the anti-fog effect of the glasses.

[0056] In this embodiment, the preset first wavelength range is 300 to 500 nm, and the preset second wavelength range is 500 to 800 nm. This is used as an example for description. Other values ​​may be set in other implementations, and this embodiment does not limit this.

[0057] The portion of the transmittance curve of each detection point with a wavelength in the preset first wavelength range is recorded as the first segment of the transmittance curve of each detection point;

[0058] The portion of the transmittance curve of each detection point whose wavelength is within the preset second wavelength range is recorded as the second segment of the transmittance curve of each detection point;

[0059] According to the transmittance values ​​of all wavelengths with and without the anti-fog film in the first section of the transmittance curve of each test point, the calculation formula corresponding to the difference in transmittance with and without the anti-fog film in the first section of the transmittance curve of each test point is obtained as follows:

[0060]

[0061] In the formula, G x N1 represents the difference in transmittance between the presence of an anti-fog film and the absence of an anti-fog film in the first segment of the transmittance curve at the xth detection point; x Indicates the number of wavelengths in the first segment of the transmittance curve of the xth detection point; L x,i is the transmittance value of the anti-fog film at the i-th wavelength in the first section of the transmittance curve of the x-th detection point; L x,i-1 is the transmittance value of the anti-fog film at the i-1th wavelength in the first section of the transmittance curve of the xth detection point; L ′ x,i is the transmittance value of the i-th wavelength in the first section of the transmittance curve of the x-th detection point without the anti-fog film; L ′ x,i-1 is the transmittance value of the x-th detection point at the i-1th wavelength in the first section of the transmittance curve without the anti-fog film.

[0062] It should be noted that the difference in the increase in transmittance with the increase in wavelength is that the larger the value is, the better the anti-fog effect of the current anti-fog film is.

[0063] According to the difference in transmittance between the presence and absence of anti-fog film in the first section of the transmittance curve of each test point and the transmittance values ​​of the presence and absence of anti-fog film at all wavelengths in the second section of the transmittance curve of each test point, the calculation formula corresponding to the transmittance anti-fog index of each test point is obtained as follows:

[0064]

[0065] In the formula, E x Indicates the transmittance anti-fog index of the xth test point; G x N2 represents the difference in transmittance between the first segment of the transmittance curve at the xth detection point with and without the anti-fog film; x represents the number of wavelengths in the second segment of the transmittance curve of the xth detection point; L x,j Indicates that the transmittance value of the anti-fog film exists at the jth wavelength in the second section of the transmittance curve of the xth detection point; L x,max Indicates the maximum value of the transmittance of the anti-fog film at all wavelengths on the transmittance curve at the xth detection point; L ′ x,max It represents the maximum value of the transmittance values ​​of all wavelengths without anti-fog film on the transmittance curve of the x-th detection point; || is the absolute value function.

[0066] It should be noted that It indicates the difference between the maximum transmittance values ​​of the anti-fog film and the anti-fog film at all wavelengths on the transmittance curve of the xth detection point. The larger the value, the better the anti-fog effect of the xth detection point. It indicates the stability of the difference between the transmittance values ​​of the anti-fog film at all wavelengths in the second section of the transmittance curve of the x-th detection point and the maximum transmittance values ​​of the anti-fog film at all wavelengths on the transmittance curve. The larger the value, the greater the transmittance is, and then there is a decline in attenuation after the transmittance reaches the maximum value. It also means that the transmittance is unstable in the second section. If the denominator is zero, set the denominator to one to ensure that the formula is valid.

[0067] Step S003: Obtaining the light transmittance index of each humidity zone according to the light transmittance anti-fog index of all the detection points in each humidity zone and the number of detection points.

[0068] Due to the structural design of the lens, different humidity conditions will occur on the lens in the same humidity environment. Different humidity conditions will cause water vapor or water droplets to form on the lens surface. These water vapor or water droplets will affect the light passing through the lens, thereby affecting the light transmittance. When people wear glasses, they need to ensure that what they see will not appear partially blurred and partially clear. Therefore, it is necessary to ensure the consistency of the anti-fog effect in the same humidity environment.

[0069] At the same time, since the number of detection points on the lens area is proportional to the area of ​​the humidity area, the current number of detection points is relatively large, which means that the current humidity area occupies a relatively large area of ​​the lens area, which means that the current lens area is in the humidity distribution, and the current humidity area distribution is relatively large. Therefore, the transmittance under the humidity distribution of the current area can better represent the overall transmittance, and the more attention should be paid to the transmittance of the current area.

[0070] According to the transmittance anti-fog index of all test points in each humidity zone and the number of test points, the calculation formula corresponding to the transmittance index of each humidity zone is obtained as follows:

[0071]

[0072] In the formula, R v Represents the transmittance index of the vth humidity zone; N v represents the number of detection points in the vth humidity zone; E v,y It represents the anti-fog index of the light transmittance at the yth detection point in the vth humidity zone. It represents the average value of the transmittance anti-fog index of all the detection points in the vth humidity zone; e is a natural constant; N represents the number of all the detection points in the lens area; || is an absolute value function; exp() is an exponential function with the natural constant as the base. This embodiment uses exp(-) to present the inverse proportional relationship and normalization processing. The implementer can set the inverse proportional function and normalization function according to the actual situation.

[0073] It should be noted that Indicates the stability of the vth humidity zone. The larger the value, the greater the difference in anti-fog effect within the vth humidity zone, indicating that the light transmittance effect is not good; It indicates the overall light transmittance effect of the vth humidity zone. The larger the value, the better the anti-fog effect. It represents the ratio of the number of detection points in the vth humidity zone to the number of all detection points in the lens. The larger the value is, the more attention the light transmittance of the vth humidity zone in the lens pays.

[0074] Step S004: Divide the minimum circumscribed rectangle of the lens area into a number of rectangular areas; select and merge an eyeball area in the minimum circumscribed rectangle of the lens area; obtain the overall anti-fog effect of the lens according to the distance between the centroid of all rectangular areas and the eyeball area and the transmittance index of all humidity areas; and determine the anti-fog effect of the lens according to the overall anti-fog effect of the lens.

[0075] In the anti-fog effect design of the lens, since the area where the human eyes are located needs to ensure the clearest field of view and the user can get the best visual experience, the anti-fog effect is increased in the central area of ​​the lens. For the corners, the anti-fog effect can be appropriately relaxed. According to the distribution of humidity areas, the overall anti-fog effect of the current lens is comprehensively determined.

[0076] The minimum circumscribed rectangle of the lens area is equally divided into a number of rectangular areas; wherein the length and width of the rectangular areas are respectively 1 / 7 of the length and 1 / 3 of the width of the minimum circumscribed rectangle of the lens area, and this is used as an example for description.

[0077] In this embodiment, the number of eyeball rectangular regions f=3 is preset, and this is used as an example for description. Other values ​​may be set in other implementations, and this embodiment does not limit this.

[0078] In the minimum circumscribed rectangle of the lens area, the merged area of ​​the center f rectangular areas of the middle row is recorded as the eyeball area;

[0079] It should be noted that, according to the size relationship between the eyeglass lens and the eye, the eyeball area is marked in the minimum circumscribed rectangle of the lens area, and the minimum circumscribed rectangle of the lens area is equally divided into 21 rectangular areas, of which there are 3 rows and each row has 7 rectangular areas.

[0080] The eyeball region importance g=1 is preset in this embodiment, and is described as an example. Other values ​​may be set in other implementations, and this embodiment does not limit this.

[0081] The reciprocal of the distance between each rectangular area and the centroid of the eyeball area is recorded as the importance of each rectangular area;

[0082] It should be noted that when the rectangular area is within the eyeball area, the importance of the rectangular area is set to g, and this is used as an example for description;

[0083] The average value of the light transmittance indexes of all humidity areas where each rectangular area is located is recorded as the light transmittance index of each rectangular area;

[0084] According to the importance and transmittance index of each rectangular area, the overall anti-fog effect of the lens is obtained:

[0085]

[0086] Among them, F represents the overall anti-fog effect of the lens; M represents the number of rectangular areas; k a Indicates the importance of the a-th rectangular area; R a Represents the transmittance index of the a-th rectangular area; norm() is a linear normalization function that normalizes the data value to the [0,1] interval.

[0087] The transmittance index threshold value preset in this embodiment is 0.1, which is used as an example for description. Other values ​​may be set in other implementations, which are not limited in this embodiment;

[0088] The lenses whose overall anti-fog effect is less than or equal to the preset light transmittance index threshold are judged as unqualified lenses;

[0089] The lenses whose overall anti-fog effect is greater than the preset light transmittance index threshold are judged as qualified lenses.

[0090] So far, the present invention is completed.

[0091] In summary, in an embodiment of the present invention, the transmittance curve of each detection point in each humidity zone in the lens area is obtained, and the transmittance anti-fog index of each detection point is obtained according to the transmittance values ​​of all wavelengths on the transmittance curve of each detection point, and then the transmittance index of each humidity zone is obtained, and the minimum circumscribed rectangle of the lens area is equally divided into several rectangular areas and the eyeball area is screened out, and the overall anti-fog effect of the lens is obtained according to the distance between the centroid of all rectangular areas and the eyeball area and the transmittance index, and the anti-fog effect of the lens is judged. The present invention determines the light transmittance of the lens at different humidities by analyzing the different humidity distribution of the lens during human wearing, and determines the overall anti-fog effect of the current lens according to the importance of anti-fog at different positions, thereby optimizing the monitoring method of the anti-fog effect of the lens.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent monitoring method for anti-fogging effect of lenses based on optical analysis, characterized in that: The method comprises the following steps: Obtaining a transmittance curve for each detection point in each humidity zone in the lens area; the horizontal axis of the transmittance curve is the wavelength, and the vertical axis is the transmittance value, and each wavelength corresponds to a transmittance value with an anti-fog film and a transmittance value without an anti-fog film; According to the transmittance values ​​of all wavelengths with and without anti-fog film on the transmittance curve of each test point, the transmittance anti-fog index of each test point is obtained; According to the light transmittance anti-fog index of all the test points in each humidity zone and the number of test points, the light transmittance index of each humidity zone is obtained; The minimum circumscribed rectangle of the lens area is equally divided into a number of rectangular areas; an eyeball area is selected and merged in the minimum circumscribed rectangle of the lens area; the overall anti-fog effect of the lens is obtained according to the distance between the centroid of all rectangular areas and the eyeball area and the transmittance index of all humidity areas; the anti-fog effect of the lens is determined according to the overall anti-fog effect of the lens; The overall anti-fog effect of the lens is obtained according to the distance between the centroid of all rectangular areas and the eyeball area and the transmittance index of all humidity areas, and the specific steps include the following: The reciprocal of the distance between each rectangular area and the centroid of the eyeball area is recorded as the importance of each rectangular area; The average value of the light transmittance indexes of all humidity areas where each rectangular area is located is recorded as the light transmittance index of each rectangular area; According to the importance and transmittance index of each rectangular area, the specific calculation formula for the overall anti-fog effect of the lens is: Among them, F represents the overall anti-fog effect of the lens; M represents the number of rectangular areas; k a Indicates the importance of the a-th rectangular area; R a Represents the transmittance index of the a-th rectangular area; norm() is a linear normalization function.

2. The intelligent monitoring method for anti-fogging effect of lenses based on optical analysis according to claim 1, characterized in that: The specific steps of obtaining the anti-fog index of the light transmittance at each detection point according to the light transmittance values ​​of the anti-fog film and the anti-fog film at all wavelengths on the light transmittance curve of each detection point include the following: The portion of the transmittance curve of each detection point with a wavelength in the preset first wavelength range is recorded as the first segment of the transmittance curve of each detection point; The portion of the transmittance curve of each detection point whose wavelength is within the preset second wavelength range is recorded as the second segment of the transmittance curve of each detection point; According to the transmittance values ​​of the anti-fog film and the anti-fog film at all wavelengths in the first section of the transmittance curve of each test point, the difference in the transmittance of the anti-fog film and the anti-fog film in the first section of the transmittance curve of each test point is obtained; According to the difference in transmittance with and without the anti-fog film in the first section of the transmittance curve of each test point and the transmittance values ​​with and without the anti-fog film at all wavelengths in the second section of the transmittance curve of each test point, the transmittance anti-fog index of each test point is obtained.

3. The intelligent monitoring method for anti-fogging effect of lenses based on optical analysis according to claim 2, characterized in that: According to the transmittance values ​​of all wavelengths in the first section of the transmittance curve of each detection point with and without the anti-fog film, the specific calculation formula for obtaining the difference in transmittance between the presence of the anti-fog film and the absence of the anti-fog film in the first section of the transmittance curve of each detection point is: In the formula, G x N1 represents the difference in transmittance between the presence of an anti-fog film and the absence of an anti-fog film in the first segment of the transmittance curve at the xth detection point; x Indicates the number of wavelengths in the first segment of the transmittance curve of the xth detection point; L x,i is the transmittance value of the anti-fog film at the i-th wavelength in the first section of the transmittance curve of the x-th detection point; L x,i-1 is the transmittance value of the anti-fog film at the i-1th wavelength in the first section of the transmittance curve of the xth detection point; L ′ x,i is the transmittance value of the i-th wavelength in the first section of the transmittance curve of the x-th detection point without the anti-fog film; L ′ x,i-1 is the transmittance value of the x-th detection point at the i-1th wavelength in the first section of the transmittance curve without the anti-fog film.

4. The intelligent monitoring method for anti-fogging effect of lenses based on optical analysis according to claim 2, characterized in that: According to the difference in transmittance between the presence of the anti-fog film and the absence of the anti-fog film in the first section of the transmittance curve of each detection point and the transmittance values ​​of the presence of the anti-fog film and the absence of the anti-fog film at all wavelengths in the second section of the transmittance curve of each detection point, the specific calculation formula for the transmittance anti-fog index of each detection point is obtained as follows: In the formula, E x Indicates the transmittance anti-fog index of the xth test point; G x N2 represents the difference in transmittance between the first segment of the transmittance curve at the xth detection point with and without the anti-fog film; x represents the number of wavelengths in the second segment of the transmittance curve of the xth detection point; L x,j Indicates that the transmittance value of the anti-fog film exists at the jth wavelength in the second section of the transmittance curve of the xth detection point; L x,max Indicates the maximum value of the transmittance of the anti-fog film at all wavelengths on the transmittance curve at the xth detection point; L ′ x,max It represents the maximum value of the transmittance values ​​of all wavelengths without anti-fog film on the transmittance curve of the x-th detection point; || is the absolute value function.

5. The intelligent monitoring method for anti-fogging effect of lenses based on optical analysis according to claim 1, characterized in that: The specific steps of obtaining the light transmittance index of each humidity area according to the light transmittance anti-fog index of all the detection points in each humidity area and the number of detection points are as follows: According to the anti-fog index of light transmittance at all test points in each humidity zone, the stability of each humidity zone is obtained; According to the stability of each humidity area, the transmittance anti-fog index of all test points and the number of test points, the transmittance index of each humidity area is obtained.

6. The intelligent monitoring method for anti-fogging effect of lenses based on optical analysis according to claim 5, characterized in that: According to the stability of each humidity area, the transmittance anti-fog index of all test points and the number of test points, the specific calculation formula for the transmittance index of each humidity area is obtained as follows: In the formula, R v Represents the transmittance index of the vth humidity zone; N v represents the number of detection points in the vth humidity zone; E v,y It represents the anti-fog index of the light transmittance at the yth detection point in the vth humidity zone. It represents the average value of the light transmittance anti-fog index of all test points in the vth humidity zone; It represents the stability of the vth humidity area; e is a natural constant; N represents the number of all detection points in the lens area; || is the absolute value function; exp() is an exponential function with the natural constant as the base.

7. The intelligent monitoring method for anti-fogging effect of lenses based on optical analysis according to claim 1, characterized in that: The specific steps of selecting and merging an eyeball area from the minimum circumscribed rectangle of the lens area are as follows: In the minimum circumscribed rectangle of the lens area, a merged area of ​​rectangular areas whose centers in the middle row are equal to the number of preset eyeball rectangular areas is recorded as the eyeball area.

8. The intelligent monitoring method for anti-fogging effect of lenses based on optical analysis according to claim 1, characterized in that: The step of determining the anti-fog effect of the lens according to the overall anti-fog effect of the lens includes the following specific steps: The lenses whose overall anti-fog effect is less than or equal to the preset light transmittance index threshold are judged as unqualified lenses; The lenses whose overall anti-fog effect is greater than the preset light transmittance index threshold are judged as qualified lenses.

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