Lens measurement system and lens detection method

Abstract

The invention provides a lens measuring system which comprises an objective table, a projection detection device and a vector height detector, the objective table is suitable for bearing a detected lens, the vector height detector is used for detecting the vector height h of the lens, the projection detection device is used for detecting the total height H and the outer diameter D of the lens, and the projection detection device is used for detecting the total height H and the outer diameter D of the lens. Wherein the objective table is arranged to be capable of being positioned at a first preset detection position, the vector height detector is arranged to be capable of being positioned at a second preset detection position, the second preset detection position is located under the first preset detection position, and the objective table is provided with a detection through hole. And when the objective table is positioned at the first preset detection position, the detection through hole directly faces the second preset detection position, so that the vector height detector positioned at the second preset detection position can detect the vector height of the to-be-detected lens which is placed in a centered manner.

Description

Technical Field

[0001] The present invention relates to a measuring system, and in particular to a lens measuring system. The present invention further relates to a lens measuring method. Background Art

[0002] The role of lens measurement systems in production and life is becoming increasingly important. They are widely used in various scenarios, such as videography, machine vision, etc. The key component that determines the imaging quality of lens measurement systems is the lens (or lens) of the lens measurement system. In order to improve the imaging quality, existing lens measurement systems often have multiple lenses. When assembling multiple lenses into the lens barrel of a lens measurement system, it is necessary to know the structural parameters of the lenses, such as the center thickness, sagittal height, and outer diameter of the lenses, for easy assembly. In addition, the processing error of the lens thickness is an important factor affecting the quality of the lens, and the structural measurement of the lens can also be used to detect the quality of the lens and screen qualified lenses. Therefore, the detection of the structural parameters of the lens is of great significance.

[0003] Most existing lens measuring equipment uses the white light confocal principle to detect the center thickness of the lens. For example, the Chinese invention patent with application number 201510071930.0 discloses a lens measurement method for non-contact detection of the center thickness of the lens using a spectrometer. However, the detection of the lens in this invention patent requires the operator to place the lens on the lens fixture 4 of the stage, and lacks the means to ensure that the vertex position of the lens is exactly opposite to the light emission area of ​​the spectrometer, resulting in excessive errors in the measurement results. In addition, the invention patent does not provide a means for detecting the sagitta or total height of the lens, so that additional detection equipment is required to separately detect the sagitta or total height of the lens. The utility model patent with application number 202022689437.4 discloses a device for non-contact measurement of the center thickness and sagitta of the lens, which can detect the center thickness of the lens through a white light confocal displacement meter 7, and measure the sagitta by measuring the distance moved by the carrier plate 6 through a micrometer 10. The non-contact device for measuring the center thickness and sagitta of a lens provided by the utility model can quickly and non-contactly measure the center thickness, sagitta and outer diameter of a lens, but still requires an operator to calibrate using a standard sheet, which takes a long time and the calibration accuracy is affected by the operator. Finally, the measurement of the non-contact device for measuring the center thickness and sagitta of a lens provided by the utility model is affected by the micrometer 10, and the measurement result is easily affected by the complex structure of the entire measuring device. Summary of the invention

[0004] The main advantage of the present invention is to provide a lens measuring system with higher reliability and detection accuracy.

[0005] Another advantage of the present invention is to provide a lens measuring system that can detect the total height of a lens with high accuracy, and the lens measuring system of the present invention can be calibrated more easily and quickly.

[0006] Another advantage of the present invention is that it provides a lens measurement system that can detect the total height, sagittal height and outer diameter of the lens in high synchronization, thereby making the lens detection more rapid and greatly improving the lens detection efficiency.

[0007] Another advantage of the present invention is to provide a lens measurement system that can achieve fully automatic measurement of the total height, sagittal height and outer diameter of the lens, thereby minimizing the influence of operators on the measurement results.

[0008] Other advantages and features of the present invention are fully apparent from the following detailed description.

[0009] Accordingly, according to the present invention, a lens measuring system of the present invention having at least one of the above advantages comprises:

[0010] Stage;

[0011] A projection detection device; and

[0012] A vector height detector, wherein the stage is suitable for carrying the lens to be tested, the vector height detector is configured to detect the vector height h of the lens, and the projection detection device is configured to detect the total height H and the outer diameter D of the lens, wherein the stage is configured to be positioned at a first preset detection position, the vector height detector is configured to be positioned at a second preset detection position, and the second preset detection position is located directly below the first preset detection position, wherein the stage has a detection through hole, and when the stage is positioned at the first preset detection position, the detection through hole is opposite to the second preset detection position, so that the vector height detector positioned at the second preset detection position can detect the vector height of the centered lens to be tested.

[0013] According to another aspect of the present invention, the present invention further provides a lens measuring method, which comprises the following steps:

[0014] (A) placing a lens to be tested on a stage with the concave portion of the lens to be tested facing the stage, wherein the stage is located at a first preset testing position;

[0015] (B) driving the lens to be tested to move on the stage through a centering device so that the center of the depression of the lens to be tested is aligned with the detection through hole of the stage, so that the lens to be tested is centered and placed; and

[0016] (C) Synchronously detecting the total height H and outer diameter D of the lens to be tested by a projection detection device and detecting the vector height h of the lens to be tested by a vector height detector, wherein the projection detection device includes a light source and a light sensor, wherein the light sensing portion of the light sensor is arranged opposite to the light outlet of the light source, and the light sensing portion of the light sensor and the light outlet of the light source are arranged coaxially, wherein the light sensor and the light source are respectively arranged on two opposite sides of the first preset detection position, and the vector height detector is located at a second preset detection position, wherein the second preset detection position is located directly below the first preset detection position.

[0017] According to another aspect of the present invention, the present invention further provides a lens measuring method, which comprises the following steps:

[0018] (A) moving the centering device to a preset position so that the centering device and the stage form a centering position, wherein the stage is located at a first preset detection position;

[0019] (B) placing the lens to be tested at the centering position, with the concave portion of the lens to be tested facing the stage, and with the center of the concave portion of the lens to be tested facing the detection through hole of the stage, so that the lens to be tested is placed in a centering position; and

[0020] (C) Synchronously detecting the total height H and outer diameter D of the lens to be tested by a projection detection device and detecting the vector height h of the lens to be tested by a vector height detector, wherein the projection detection device includes a light source and a light sensor, wherein the light sensing portion of the light sensor is arranged opposite to the light outlet of the light source, and the light sensing portion of the light sensor and the light outlet of the light source are arranged coaxially, wherein the light sensor and the light source are respectively arranged on two opposite sides of the first preset detection position, and the vector height detector is located at a second preset detection position, wherein the second preset detection position is located directly below the first preset detection position.

[0021] The above and other advantages of the present invention will be fully reflected in conjunction with the following description and the accompanying drawings.

[0022] The above and other advantages and features of the present invention are fully reflected in the following detailed description of the present invention and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional schematic diagram of a lens measurement system according to an embodiment of the present invention.

[0024] Figure 2 is a schematic top view of a lens measurement system according to an embodiment of the present invention.

[0025] Figure 3 is a side schematic diagram of a lens measurement system according to an embodiment of the present invention.

[0026] Figure 4 is another side view schematic diagram of the lens measurement system according to an embodiment of the present invention.

[0027] Figure 5A is a schematic top view of a lens measurement system according to an embodiment of the present invention, wherein the stage of the lens measurement system of the present invention shown in the figure is moved to the first preset measurement position.

[0028] Figure 5B 3 is a schematic top view of a lens measuring system according to an embodiment of the present invention, wherein the centering device of the lens measuring system of the present invention shown in the figure is moved.

[0029] Figure 5C is a schematic top view of a lens measuring system according to an embodiment of the present invention, wherein the centering device of the lens measuring system of the present invention shown in the figure moves the lens to be measured to a centering position.

[0030] Figure 5D 3 is a schematic top view of a lens measuring system according to an embodiment of the present invention, wherein the centering device of the lens measuring system of the present invention shown in the figure is removed to prevent it from affecting the measurement result.

[0031] Fig. 6A The figure shows the process of measuring the vector height of the lens to be measured by the vector height detector of the lens measurement system according to an embodiment of the present invention, wherein as shown in the figure, the vector height detector is moved to a second preset detection position, and the lens to be measured is placed on the stage and centered.

[0032] Figure 6B The figure shows the process of measuring the vector height of the lens to be tested by the vector height detector of the lens measurement system according to an embodiment of the present invention, wherein as shown in the figure, the vector height detector moves upward from the second preset detection position, and the lens to be tested is placed on the stage and centered.

[0033] Figure 6C The figure shows a process of measuring the sagittal height of a lens to be measured by a sagittal height detector of a lens measurement system according to an embodiment of the present invention. As shown in the figure, after the sagittal height detector moves upward from a second preset detection position, the sagittal height of the lens to be measured is measured.

[0034] Figure 7 4 is a schematic cross-sectional view of a lens of a lens measuring system according to an embodiment of the present invention.

[0035] Figure 8 Schematic diagram of the structure of the driving mechanism of the lens measurement system according to an embodiment of the present invention.

[0036] Fig. 9 4 is a flow chart of a lens locking method for a lens measuring system according to an embodiment of the present invention.

[0037] Fig.10 2 is another schematic flow chart of a lens locking method for a lens measuring system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0038] The following description is provided to enable those skilled in the art to implement the present invention. Other obvious replacements, modifications and variations may occur to those skilled in the art. Therefore, the scope of protection of the present invention should not be limited to the exemplary embodiments described herein.

[0039] Those skilled in the art should understand that, unless otherwise specified herein, the terms "one" and "an" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple.

[0040] Those skilled in the art should understand that, unless otherwise specified herein, the directions or positions referred to by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the directions or positions shown in the drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the devices or elements involved must have a specific direction or position. Therefore, the above terms should not be understood as limiting the present invention.

[0041] Reference to the attached drawings of the specification Figures 1 to 7, a lens measurement system according to an embodiment of the present invention is explained, wherein the lens measurement system of the present invention includes a stage 10, a projection detection device 20 and a vector height detector 30, wherein the stage 10 is suitable for carrying a lens 1 to be detected, the vector height detector 30 is configured to detect the vector height h of the lens 1, and the projection detection device 20 is configured to detect the total height H and the outer diameter D of the lens 1, wherein the stage 10 is configured to be positioned at a first preset detection position, the vector height detector 30 is configured to be positioned at a second preset detection position, and the second preset detection position is located directly below the first preset detection position (or the first preset detection position and the second preset detection position are coaxial), wherein the stage 10 has a detection through hole 101, and when the stage 10 is positioned at the first preset detection position, the detection through hole 101 is opposite to the second preset detection position, so that the vector height detector 30 positioned at the second preset detection position can detect the vector height of the lens 1 placed thereon. It can be understood that when the lens 1 is placed on the stage 10, the lens 1 is placed in a centered manner, and the concave center of the lens 1 is aligned with the detection through hole 101 of the stage 10. It can be understood that the middle thickness d of the lens 1 is the difference between the total height H of the lens 1 and the vector height h of the lens 1. Accordingly, the operator or the processor of the programmed lens measurement system of the present invention can determine whether the lens to be tested meets the requirements based on the test results and the standard lenses of corresponding specifications. It is worth noting that the second preset detection position of the vector height detector 30 of the lens measurement system of the present invention is located directly below the first preset detection position of the stage 10, so that when the stage 10 is adjusted to the first preset detection position and the vector height detector 30 is adjusted to the second preset detection position, the total height H, outer diameter D and vector height h of the lens 1 placed on the stage 10 can be synchronously measured.

[0042] As shown in the attached figure of the specification Figures 1 to 7As shown, the lens measurement system according to the embodiment of the present invention further comprises a centering device 70, wherein the centering device 70 is configured to drive the lens 1 to move to a preset position on the stage 10, so that the central axis of the lens 1 (or the optical axis of the lens 1, generally, the central axis of the lens coincides with the optical axis) passes through the detection through hole 101 and the lens 1 is placed in a centered manner, so as to ensure that the vector height detector 30 can accurately detect the vector height of the lens 1 placed thereon. It can be understood that the centering device 70 of the lens measurement system of the present invention can be any centering mechanism that can make the central axis of the lens 1 to be measured pass through the detection through hole 101, so that the concave center of the lens 1 placed on the stage 10 is aligned with the detection through hole 101 of the stage 10, and the central axis of the lens 1 to be measured passes through the detection through hole 101. Preferably, the centering device 70 of the lens measurement system of the present invention comprises a V-shaped plate 71, which is used to help center the lens 1. Optionally, the centering device 70 of the lens measurement system of the present invention is configured to pre-form a centering position on the stage 10, and the lens 1 to be tested is placed at the positioning position and tested, wherein when the lens 1 to be tested is placed at the positioning position, the center of the recess is aligned with the testing through hole 101 of the stage 10, so that it is centered.

[0043] As shown in the attached figure of the specification Figures 1 to 6C As shown, the projection detection device 20 of the lens measurement system according to an embodiment of the present invention includes a light source 21 and a light sensor 22, wherein the light sensing portion 221 of the light sensor 22 is arranged opposite to the light outlet 211 of the light source 21, and the light sensing portion 221 of the light sensor 22 and the light outlet 211 of the light source 21 are arranged coaxially, wherein the light sensor 22 and the light source 21 are suitable for being respectively arranged at two opposite sides of the first preset detection position, so that the stage 10 moved to the first preset detection position is located between the light sensor 22 and the light source 21 and the total height H and outer diameter D of the lens 1 carried by the stage 10 can be detected. Further, the shapes and sizes of the light sensing portion 221 of the light sensor 22 and the light outlet 211 of the light source 21 are adapted to each other, and the light sensing portion 221 of the light sensor 22, the light outlet 211 of the light source 21 and the stage 10 are arranged at the same height position, so that the light emitted by the light source 21 can be irradiated on the lens 1 and on the light sensing portion 221 of the light sensor 22 to form a complete projection of the lens 1. Accordingly, the widths of the light sensing portion 221 of the light sensor 22 and the light outlet 211 of the light source 21 are both greater than the outer diameter of the lens 1; the heights of the light sensing portion 221 of the light sensor 22 and the light outlet 211 of the light source 21 are both greater than the total height of the lens 1.

[0044] It is worth noting that the lens measurement system of the present invention detects the total height H and outer diameter D of the lens 1 through the projection detection device 20, so that the detection of the total height H, outer diameter D and sagittal height h of the lens 1 can be completed automatically, thereby avoiding the errors caused by manual detection and the different preferences of different operators that increase the errors and making the measurement results more accurate. In addition, the lens measurement system of the present invention detects the total height H and outer diameter D of the lens 1 through the projection detection device 20, avoiding the defects of traditional probe or probe contact measurement that requires contact with the lens 1 and easily scratches the lens 1 to be tested. Finally, it is particularly important that, unlike traditional manual detection, the lens measurement system of the present invention detects the total height H and outer diameter D of the lens 1 through the projection detection device 20, so that the total height H, outer diameter D and sagittal height h of the lens can be detected synchronously, thereby significantly reducing the detection time.

[0045] Preferably, the light source 21 has a group of LED lights and a light homogenizer, wherein the LED lights form a matrix so that the light provided by the light source 21 has a higher degree of parallelism; the light homogenizer is arranged opposite to the LED light matrix so that the distribution of the light emitted by the light source 21 is more uniform. The parallelism and uniform distribution of the light emitted by the light source 21 can make the light sensor 22 more sensitive and accurate in sensing the light, and make the imaging of the light sensor 22 clearer and have better contrast, so as to obtain more accurate measurement results of the total height H and the outer diameter D. Preferably, the light outlet 211 of the light source 21 is square. The light outlet 211 of the light source 21 is square, so that the LED light matrix of the light source 21 has a better match with the light outlet 211, and the distribution of the light emitted by the light source 21 is more regular and reduces the later algorithm, and when the total height H and the outer diameter D of the lens 1 are calculated according to the projection imaging, a more accurate measurement result is obtained.

[0046] As shown in the attached figure of the specification Figures 1 to 7As shown, the vector height detector 30 of the lens measurement system according to the embodiment of the present invention includes a vector height sensor 31, wherein the vector height sensor 31 is suitable for being set at the second preset detection position, and the vector height sensor 31 is set to face upward, so that when the stage 10 is set at the first preset detection position, the vector height sensor 31 can detect the vector height of the lens 1 centered on the stage 10 through the detection through hole 101 of the stage 10. Further, the vector height detector 30 of the lens measurement system of the present invention includes a multi-dimensional moving part 32, wherein the vector height sensor 31 is fixedly set on the multi-dimensional moving part 32, so that when the multi-dimensional moving part 32 is driven to move, the vector height sensor 31 can be driven to move synchronously. Further, the multi-dimensional moving part 32 can be driven to move the vector height sensor 31 to the second preset detection position, so that the vector height sensor 31 can detect the lens 1 placed on the stage 10. It is understood that the multi-dimensional moving member 32 is configured to move in multiple directions, for example, along the X-axis direction and the Y-axis direction, so as to drive the vector height detector 30 to move along the X-axis direction and the Y-axis direction. Further, the multi-dimensional moving member 32 is configured to be able to move in pitch and roll. It is understood that the vector height sensor 31 is a non-contact vector height sensor. Preferably, the vector height sensor 31 is a white light confocal sensor.

[0047] As shown in the attached figure of the specification Figures 1 to 6C As shown, illustratively, the lens measurement system according to an embodiment of the present invention further includes a position adjustment component 40, wherein the position adjustment component 40 is configured to adjust the position of the centering device 70, so that the centering device 70 can drive the lens 1 to move to a preset position on the stage 10, so that the central axis of the lens 1 (or the optical axis of the lens 1, generally, the central axis of the lens coincides with the optical axis) passes through the detection through hole 101 and the lens 1 is centered and placed, so as to ensure that the vector height detector 30 can accurately detect the vector height placed on the lens 1.

[0048] As shown in the attached figure of the specification Figures 1 to 6CAs shown, exemplarily, the position adjustment assembly 40 of the lens measurement system according to the embodiment of the present invention includes a first electric translation stage 41 and a second electric translation stage 42, wherein the first electric translation stage 41 is configured to be movable along a first direction, the second electric translation stage 42 is disposed on the first electric translation stage 41, and the second electric translation stage 42 is configured to be movable along a second direction relative to the first electric translation stage 41, so that when the first electric translation stage 41 is driven to move along the first direction, the second electric translation stage 42 can be driven to move synchronously along the first direction, wherein the first direction and the second direction correspond to the X-axis direction and the Y-axis direction, or correspond to the Y-axis direction and the X-axis direction, respectively. In other words, when the first direction is the X-axis direction, the second direction corresponds to the Y-axis direction; when the first direction is the Y-axis direction, the second direction corresponds to the X-axis direction. Preferably, the centering device 70 is disposed on the second electric translation stage 42, so that its position can be adjusted by the first electric translation stage 41 and the second electric translation stage 42. Exemplarily, the centering device 70 of the lens measuring system of the present invention includes a V-shaped plate 71 to help center the lens 1 .

[0049] As shown in the attached figure of the specification Figures 1 to 6C As shown, exemplarily, the position adjustment component 40 of the lens measurement system according to an embodiment of the present invention further includes a vertical electric translation stage 43, wherein the multi-dimensional moving member 32 is arranged on the vertical electric translation stage 43, wherein the vertical electric translation stage 43 is configured to be able to move in the vertical direction (Z-axis direction) to drive the multi-dimensional moving member 32 to move in the vertical direction.

[0050] As shown in the attached figure of the specification Figures 1 to 6CAs shown, the lens measurement system according to the embodiment of the present invention further comprises a control unit 50 and a driving device 60, wherein the control unit 50 is electrically connected to the driving device 60, wherein the control unit 50 is configured to control the driving device 60 to drive the first electric translation stage 41, the second electric translation stage 42 and the vertical electric translation stage 43 of the position adjustment assembly 40 to move, thereby driving the centering device 70 and the vector height detector 30 to a proper position. Accordingly, the centering device 70 is arranged on the first electric translation stage 41 and the second electric translation stage 42 of the position adjustment assembly 40, so that the position adjustment assembly 40 can drive the centering device 70 to move on the horizontal plane. It can be understood that the control unit 50 is configured to control the driving device 60 to drive the vertical electric translation stage 43 of the position adjustment component 40 to move, thereby driving the multi-dimensional moving member 32 and the vector height detector 30 to move, so that the total height H, vector height h and outer diameter D of the lens 1 are measured by the vector height detector 30 and the projection detection device 20 and the middle thickness A of the lens 1 is obtained. Accordingly, under the action of the control unit 50, the driving device 60 and the position adjustment component 40, the total height H, vector height h and outer diameter D of the lens 1 are measured by the vector height detector 30 and the projection detection device 20. Therefore, the lens measurement system of the present invention can reduce manual operations as much as possible and improve the automation of the detection process of the lens 1.

[0051] As shown in the attached picture FIG. 6A to FIG. 7 As shown, according to an embodiment of the present invention, after the lens 1 to be tested is placed on the stage 10, the control unit 50 can control the driving device 60 to drive the position adjustment component 40 to move, thereby driving the centering device 70 and the vector height detector 30 to an appropriate position, so that the lens 1 is located directly in front of the centering device 70 (or close to the V-shaped plate 71 of the centering device 70) and the recessed center of the lens 1 placed on the stage 10 is facing the detection through hole 101 of the stage 10 and the central axis of the lens 1 to be tested passes through the detection through hole 101, so as to be centered and placed. After the lens 1 to be tested is centered and placed, the centering device 70 (or V-shaped plate 71) is removed to prevent it from affecting the measurement of the lens 1 to be tested, and at this time, the vector height sensor 31 of the vector height detector 30 is facing the detection through hole 101 of the stage 10. Accordingly, the total height H and the outer diameter D of the lens 1 can be detected synchronously by the projection detection device 20 , and the sagittal height h of the lens 1 can be detected by the sagittal height detector 30 .

[0052] As shown in the attached picture Figure 6B and Figure 7As shown, further, in order to more accurately measure the sagitta h of the lens 1, the sagitta detector 30 can also be moved upward by a distance Y2 from the second preset detection position according to the sagitta of the standard lens corresponding to the lens 1 to be tested, and the distance between the sagitta sensor 31 and the inner wall of the lens 1 detected by the sagitta sensor 31 of the sagitta detector 30 is Y3, then the sagitta h of the lens 1 = Y2 + Y3, if the total height of the lens 1 detected by the projection detection device 20 is H, then the center thickness of the lens 1 is A, then A = Hh = H-Y2-Y3. Preferably, the control unit 50 is programmed to be able to measure the sagitta h of the lens 1 (or the lens 1 to be tested) according to the center thickness A, sagitta h and outer diameter D of the lens 1 (or the lens 1 to be tested), and the center thickness A of the standard lens corresponding to the lens 1 stored in the projection detection device 20. 标 、Yagao h 标 and outer diameter D 标 , determine whether the lens 1 to be tested meets the requirements.

[0053] As shown in the attached picture Figure 8 As shown, further, according to an embodiment of the present invention, the present invention further provides a lens detection method, which includes the following steps:

[0054] (A) placing a lens 1 to be tested on a stage 10 with the concave portion of the lens 1 facing the stage 10, wherein the stage 10 is located at a first preset testing position;

[0055] (B) driving the lens 1 to move on the stage 10 through the centering device 70 so that the concave center of the lens 1 is aligned with the detection through hole 101 of the stage 10, so that the lens 1 is centered and placed; and

[0056] (C) Synchronously detecting the total height H and outer diameter D of the lens 1 by a projection detection device 20 and detecting the vector height h of the lens 1 by a vector height detector 30, wherein the projection detection device 20 includes a light source 21 and a light sensor 22, wherein the light sensing portion 221 of the light sensor 22 is arranged opposite to the light outlet 211 of the light source 21, and the light sensing portion 221 of the light sensor 22 and the light outlet 211 of the light source 21 are arranged coaxially, wherein the light sensor 22 and the light source 21 are respectively arranged on two opposite sides of the first preset detection position, and the vector height detector 30 is located at a second preset detection position, wherein the second preset detection position is located directly below the first preset detection position.

[0057] The lens detection method of the present invention further comprises the following steps:

[0058] (D) The vector height detector 30 is moved to the second preset detection position, so that the vector height sensor 31 of the vector height detector 30 faces the detection through hole 101 of the stage 10 .

[0059] The lens detection method of the present invention further comprises the following steps:

[0060] (X) removing the centering device 70, wherein step (X) is located after step (B) and before step (C).

[0061] The lens detection method of the present invention further comprises the following steps:

[0062] (E) According to the formula A=Hh, the median thickness A of the lens 1 is calculated, wherein the total height of the lens 1 is H, and the sagittal height of the lens 1 is h, wherein step (E) is after step (C).

[0063] The lens detection method of the present invention further comprises the following steps:

[0064] (F) According to the formula h=Y2+Y3, the sagitta of the lens 1 is calculated, wherein the sagitta of the lens 1 is h, the distance that the sagitta detector 30 moves upward from the second preset detection position is Y2, and the distance between the sagitta sensor 31 and the inner wall of the lens 1 detected by the sagitta sensor 31 of the sagitta detector 30 is Y3. Accordingly, the middle thickness A of the lens 1 is H-Y2-Y3, wherein step (F) is located after step (D) and step (C), and before step (E).

[0065] The lens detection method of the present invention further comprises the following steps:

[0066] (G) Based on the middle thickness A, sagittal height h and outer diameter D of the lens 1 (or the lens to be tested 1), and the middle thickness A of the standard lens corresponding to the lens 1 标 、Yagao h 标 and outer diameter D 标 , determine whether the lens 1 to be tested meets the requirements, wherein step (G) is after step (E).

[0067] As shown in the attached picture Fig. 9 As shown, further, according to an embodiment of the present invention, the present invention further provides a lens detection method, which includes the following steps:

[0068] (A) moving the centering device 70 to a preset position so that the centering device 70 and the stage 10 form a centering position, wherein the stage 10 is located at a first preset detection position;

[0069] (B) placing the lens 1 to be tested at the centering position, with the concave portion of the lens 1 facing the stage 10, so that the center of the concave portion of the lens 1 is aligned with the detection through hole 101 of the stage 10, so that the lens 1 is centered; and

[0070] (C) Synchronously detecting the total height H and outer diameter D of the lens 1 by a projection detection device 20 and detecting the vector height h of the lens 1 by a vector height detector 30, wherein the projection detection device 20 includes a light source 21 and a light sensor 22, wherein the light sensing portion 221 of the light sensor 22 is arranged opposite to the light outlet 211 of the light source 21, and the light sensing portion 221 of the light sensor 22 and the light outlet 211 of the light source 21 are arranged coaxially, wherein the light sensor 22 and the light source 21 are respectively arranged on two opposite sides of the first preset detection position, and the vector height detector 30 is located at a second preset detection position, wherein the second preset detection position is located directly below the first preset detection position.

[0071] The lens detection method of the present invention further comprises the following steps:

[0072] (D) The vector height detector 30 is moved to the second preset detection position, so that the vector height sensor 31 of the vector height detector 30 faces the detection through hole 101 of the stage 10 .

[0073] The lens detection method of the present invention further comprises the following steps:

[0074] (X) removing the centering device 70, wherein step (X) is located after step (B) and before step (C).

[0075] The lens detection method of the present invention further comprises the following steps:

[0076] (E) According to the formula A=Hh, the median thickness A of the lens 1 is calculated, wherein the total height of the lens 1 is H, and the sagittal height of the lens 1 is h, wherein step (E) is after step (C).

[0077] The lens detection method of the present invention further comprises the following steps:

[0078] (F) According to the following formula:

[0079] h=Y2+Y3, wherein the vector height of the lens 1 is h, the distance that the vector height detector 30 moves upward from the second preset detection position is Y2, and the distance between the vector height sensor 31 and the inner wall of the lens 1 detected by the vector height sensor 31 of the vector height detector 30 is Y3. Accordingly, the middle thickness A of the lens 1 is A=H-Y2-Y3, wherein step (F) is located after step (D) and step (C), and before step (E).

[0080] The lens detection method of the present invention further comprises the following steps:

[0081] (G) judging whether the lens 1 to be tested meets the requirements according to the center thickness A, sagitta h and outer diameter D of the lens 1 (or the lens 1 to be tested) and the center thickness A mark, sagitta h mark and outer diameter D mark of the standard lens corresponding to the lens 1, wherein step (G) is located after step (E).

[0082] Those skilled in the art should understand that the above description and the embodiments shown in the drawings are only for illustrative explanation of the present invention, rather than for limitation of the present invention. All equivalent implementations, modifications and improvements within the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A lens measurement system, characterized in that: include: Stage; Projection detection device; and A vector height detector, wherein the stage is suitable for carrying the lens to be tested, the vector height detector is configured to detect the vector height h of the lens to be tested, and the projection detection device is configured to detect the total height H and the outer diameter D of the lens to be tested, wherein the stage is configured to be positioned at a first preset detection position, the vector height detector is configured to be positioned at a second preset detection position, and the second preset detection position is located directly below the first preset detection position, wherein the stage has a detection through hole, and when the stage is positioned at the first preset detection position, the detection through hole is opposite to the second preset detection position, so that the vector height detector positioned at the second preset detection position can detect the vector height of the centered lens to be tested.

2. The lens measurement system according to claim 1, characterized in that: The projection detection device includes a light source and a light sensor, wherein the light sensing portion of the light sensor is arranged opposite to the light outlet of the light source, and the light sensing portion of the light sensor and the light outlet of the light source are arranged coaxially, wherein the light sensor and the light source are respectively arranged on two opposite sides of the first preset detection position, so that the stage moved to the first preset detection position is located between the light sensor and the light source and the total height H and outer diameter D of the lens to be tested carried by the stage can be detected.

3. The lens measurement system according to claim 2, characterized in that: The shapes and sizes of the light sensing portion of the light sensor and the light outlet of the light source are adapted to each other, and the light sensing portion of the light sensor, the light outlet of the light source and the stage are arranged at the same height position, so that the light emitted by the light source can illuminate the lens to be tested and form a complete projection of the lens to be tested on the light sensing portion of the light sensor.

4. The lens measurement system according to claim 3, characterized in that: The widths of the light sensing part of the light sensor and the light outlet of the light source are both greater than the outer diameter of the lens to be tested; the heights of the light sensing part of the light sensor and the light outlet of the light source are both greater than the total height of the lens to be tested.

5. The lens measurement system according to claim 2, characterized in that: It further comprises a centering device, wherein the centering device is configured to drive the lens to be tested to move to a preset position on the stage, so that the central axis of the lens to be tested passes through the detection through hole and the lens to be tested is placed in a centered manner.

6. The lens measurement system according to claim 4, characterized in that: It further comprises a centering device, wherein the centering device is configured to drive the lens to be tested to move to a preset position on the stage, so that the central axis of the lens to be tested passes through the detection through hole and the lens to be tested is placed in a centered manner.

7. The lens measurement system according to claim 2, characterized in that: The vector height detector includes a vector height sensor, wherein the vector height sensor is suitable for being set at the second preset detection position, and the vector height sensor is set to face upward, so that when the stage is set at the first preset detection position, the vector height sensor can detect the vector height of the lens to be tested centered on the stage through the detection through hole of the stage.

8. The lens measurement system according to claim 5, characterized in that: It further comprises a position adjustment assembly, wherein the centering device is arranged on the position adjustment assembly.

9. The lens measurement system according to claim 8, characterized in that: The position adjustment assembly includes a first electric translation stage and a second electric translation stage, wherein the centering device is arranged on the second electric translation stage, wherein the first electric translation stage is arranged to be able to move along a first direction, the second electric translation stage is arranged on the first electric translation stage, and the second electric translation stage is arranged to be able to move along a second direction relative to the first electric translation stage, wherein the first direction and the second direction correspond to the X-axis direction and the Y-axis direction, respectively, or correspond to the Y-axis direction and the X-axis direction, respectively.

10. The lens measurement system according to any one of claims 1 to 9, characterized in that: The centering device is configured to pre-form a centering position with the object carrier.

11. A lens detection method comprising the following steps: (A) placing a lens to be tested on a stage with the concave portion of the lens to be tested facing the stage, wherein the stage is located at a first preset testing position; (B) driving the lens to be tested to move on the stage through a centering device so that the center of the depression of the lens to be tested is aligned with the detection through hole of the stage, so that the lens to be tested is centered and placed; and (C) Synchronously detecting the total height H and outer diameter D of the lens to be tested by a projection detection device and detecting the vector height h of the lens to be tested by a vector height detector, wherein the projection detection device includes a light source and a light sensor, wherein the light sensing portion of the light sensor is arranged opposite to the light outlet of the light source, and the light sensing portion of the light sensor and the light outlet of the light source are arranged coaxially, wherein the light sensor and the light source are respectively arranged on two opposite sides of the first preset detection position, and the vector height detector is located at a second preset detection position, wherein the second preset detection position is located directly below the first preset detection position.

12. A lens detection method comprising the following steps: (A) moving the centering device to a preset position so that the centering device and the stage form a centering position, wherein the stage is located at a first preset detection position; (B) placing the lens to be tested at the centering position, with the concave portion of the lens to be tested facing the stage, so that the center of the concave portion of the lens to be tested is aligned with the detection through hole of the stage, thereby placing the lens to be tested in a centering position; and (C) Synchronously detecting the total height H and outer diameter D of the lens to be tested by a projection detection device and detecting the vector height h of the lens to be tested by a vector height detector, wherein the projection detection device includes a light source and a light sensor, wherein the light sensing portion of the light sensor is arranged opposite to the light outlet of the light source, and the light sensing portion of the light sensor and the light outlet of the light source are arranged coaxially, wherein the light sensor and the light source are respectively arranged on two opposite sides of the first preset detection position, and the vector height detector is located at a second preset detection position, wherein the second preset detection position is located directly below the first preset detection position.

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