Lens detection device

Abstract

The utility model relates to a lens detection device. The lens detection device comprises a shading half shell, a functional half shell and a plurality of point light sources, the functional half shell and the shading half shell jointly define a working cavity for isolating external light, the functional half shell is provided with a window, the window is used for containing a lens, the lens partially extends into the working cavity and faces the shading half shell, and the point light sources are arranged in the working cavity. The plurality of point light sources are arranged on the inner wall of the shading half shell at intervals, and at least one of the plurality of point light sources is set to be capable of being independently switched on and off. According to the invention, a standard controllable scene is provided for lens Flare detection, point light sources at different positions can be controlled to emit light to the lens, the precision of lens Flare detection is improved, and the detection accuracy is improved.

Description

Technical Field

[0001] The present application relates to the technical field of lens detection, and in particular to a lens detection device. Background Art

[0002] Lens flare refers to the light spots and halos produced by imaging. In related technologies, lens flare testing typically relies on subjective evaluation, often using various instruments to create complex test scenarios. However, due to the limited experimental environment, which requires a completely dark room or laboratory, and the fact that the light source, distance, and angle are all determined, they can be affected by other environmental factors. This can easily lead to large errors in the experimental data measured by related technologies, resulting in low detection accuracy. Utility Model Content

[0003] Based on this, it is necessary to provide a lens detection device to address the problems of large errors in experimental data measured in related technologies and low detection accuracy.

[0004] According to one aspect of the present application, a lens detection device is provided, the lens detection device comprising:

[0005] Blackout half shell;

[0006] a plurality of point light sources, spaced apart from each other and arranged on the inner wall of the light-shielding half shell, at least one of the plurality of point light sources being configured to be independently switchable;

[0007] The functional half shell and the light-shielding half shell jointly define a working cavity that is isolated from external light. The lens is arranged on the functional half shell and partially located in the working cavity, and the lens faces the light-shielding half shell.

[0008] In one embodiment, the light-shielding half shell includes a spherical half shell, and the plurality of point light sources are arranged in an array on the inner wall of the light-shielding half shell.

[0009] In one embodiment, the lens detection device has a first axis parallel to the direction of the light-shielding half shell pointing to the functional half shell and a reference plane. The first axis is located on the reference plane, and a scale is provided on the inner wall of the light-shielding half shell along the extension direction of the intersection line of the reference plane and the light-shielding half shell.

[0010] In one embodiment, along the extension direction of the intersection line of the reference plane and the light-shielding half shell, the spacing between the plurality of point light sources is smaller than the spacing between the plurality of point light sources arranged in an array.

[0011] In one embodiment, the functional half shell includes a body, a mounting portion, and a rotating connector, wherein the body is connected to the light-shielding half shell, the mounting portion is provided on the body and is spaced apart from the center of the light-shielding half shell along the extension direction of the first axis, and the mounting portion is used to mount the lens;

[0012] The rotating connection member is connected between the body and the mounting portion, so that the mounting portion can rotate relative to the body around the first axis.

[0013] In one embodiment, the functional half shell further includes a limiting member, the mounting portion is provided with a window connected to the working chamber and the outside, the lens is passed through the window, and the limiting member is provided on the mounting portion and located on one side of the window for limiting the lens.

[0014] In one embodiment, the body includes a plurality of telescopic sub-shells, and the plurality of telescopic sub-shells are arranged in sequence along the extension direction of the first axis;

[0015] Furthermore, along the extension direction of the first axis, one of the two adjacent telescopic sub-shells is configured to be able to extend or retract relative to the other one.

[0016] In one embodiment, the lens detection device further includes an opening and closing connector and a lock, wherein the opening and closing connector is provided between the light-shielding half shell and the functional half shell, and one end of the lock is connected to the light-shielding half shell, and the other end is connected to the functional half shell.

[0017] In one embodiment, the light-shielding half shell and the functional half shell are both made of light-shielding materials; and / or

[0018] A light-shielding layer is provided on the inner wall of the light-shielding half shell.

[0019] In one embodiment, the lens detection device further includes a base, which is provided on one side of the light-shielding half shell and is used to support the light-shielding half shell.

[0020] The working chamber of the lens detection device isolates the device from external light, creating a shading environment and providing a standard, controllable scene for lens flare detection. This provides professional scene support for detection and reduces the impact of other environmental factors on detection. Multiple point light sources on the inner wall of the shading half-shell can be independently switched on and off, thereby controlling point light sources at different locations to emit light to the lens. After the lens receives the light, an imaging device such as a camera forms an image, which can observe the position of light spots or ghost images in the resulting image. Flare detection can also be quantified based on the received image, which helps improve the precision and accuracy of lens flare detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view of the light-shielding half shell and the functional half shell of the lens detection device in one embodiment of the present application in an open state.

[0022] Figure 2 for Figure 1 A side view of the light shielding half shell and the functional half shell of the lens detection device in the illustrated embodiment in a closed state.

[0023] Description of Figure Numbers:

[0024] 10. Lens detection device;

[0025] 100, light-shielding half shell; 110, point light source; 120, opening and closing connector; 130, lock;

[0026] 200, functional half shell; 210, main body; 211, telescopic sub-shell; 220, mounting portion; 230, rotating connector; 240, limiting member;

[0027] 300, base;

[0028] 400, lens;

[0029] L, first axis. DETAILED DESCRIPTION

[0030] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0032] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0033] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0036] Lens flare is an optical phenomenon that occurs when light from a strong light source (such as the sun or a bright lamp) shines directly into a camera lens. This can create unwanted flares, halos, or other patterns in the image, which can reduce the contrast and quality of the image. This phenomenon is sometimes used to create specific visual effects in photography and filmmaking, but in other cases it needs to be controlled or eliminated.

[0037] Based on different needs, the detection of lens flare phenomenon is extremely critical. In related technologies, the test of lens flare phenomenon basically relies on subjective judgment of the severity of a lens flare phenomenon with the naked eye, and there is no specific quantitative test. In addition, due to the large number of subjective and scene variables in subjective testing, and the flare phenomenon is related to the distance, angle and intensity of the lens and light source, the experimental data obtained has large errors.

[0038] Based on this, the present application provides a lens detection device that can provide a standard controllable scene for lens Flare detection, so that the detection is supported by professional scenes, reduce the impact of other environmental factors on the detection, and realize the quantification of Flare phenomenon detection, which is conducive to improving the accuracy of lens Flare phenomenon detection and improving detection accuracy.

[0039] See Figure 1 As shown, Figure 1 This is a front view of the light-shielding half-shell 100 and the functional half-shell 200 of the lens inspection device 10 in an embodiment of the present application, in an open state. The lens inspection device 10 provided in this application includes the light-shielding half-shell 100, the functional half-shell 200, and a plurality of point light sources 110. The plurality of point light sources 110 are spaced apart on the inner wall of the light-shielding half-shell 100 and provide light sources for detecting the flare phenomenon of the lens 400. The functional half-shell 200 and the light-shielding half-shell 100 together define a working cavity that is isolated from external light, providing a stable detection scene for the lens 400. The functional half-shell 200 is provided with a window for accommodating the lens 400, allowing the lens 400 to partially extend into the working cavity and face the light-shielding half-shell 100. In other words, the lens 400 is disposed on the functional half-shell 200 and partially located within the working cavity, with the lens 400 facing the light-shielding half-shell 100. Thus, the different point light sources 110 on the light-shielding half shell 100 can all provide the light required for detection for the lens 400. At least one of the multiple point light sources 110 is configured to be independently switchable, so that by controlling the switching of the multiple point light sources 110, the lens 400 can be provided with incident light from different angles and different distances.

[0040] It can be understood that the lens 400 can be the lens 400 of an imaging device such as a camera. The imaging device is placed on the outside of the functional half shell 200. The lens 400 of the imaging device passes through the functional half shell 200 and is at least partially located in the working cavity. The point light sources 110 at different positions are controlled to be turned on so that light at different angles enters the lens 400. When the imaging device collects the light for imaging, the content of the image formed by the imaging device can be used to observe whether the Flare phenomenon occurs, that is, whether there are ghost images or light spots, etc., and the position of the lens 400 generating the Flare phenomenon can be determined based on the position of the ghost image or light spot and the position of the corresponding turned-on point light source 110.

[0041] The working chamber of the lens detection device 10 of the present application is isolated from the light-shielding environment of the external light. When the point light source 110 is not turned on, the working chamber is an almost completely dark environment, providing a standard controllable scene for the detection of the lens 400 Flare phenomenon, so that the detection is supported by a professional scene and the influence of other environmental factors on the detection is reduced. The multiple point light sources 110 on the inner wall of the light-shielding half shell 100 can be turned on and off independently, so that the point light sources 110 at different positions can be controlled to emit light to the lens 400, which can simulate the situation where light comes from different directions in actual shooting. After the lens 400 receives the light, an imaging device such as a camera forms an image, and the position of the light spot or ghost image of the image is observed. According to the position of the turned-on point light source 110, the position of the Flare on the lens is determined, and the quantification of the Flare detection is realized, which is conducive to improving the precision of the lens Flare detection and improving the accuracy of the detection.

[0042] In some embodiments, see Figure 2 As shown, Figure 2 for Figure 1 The illustrated embodiment shows a side view of the closed light-shielding half-shell 100 and functional half-shell 200 of the lens inspection device 10. The light-shielding half-shell 100 comprises a spherical half-shell, meaning it can have a hemispherical shell structure. The point light source 110 is disposed on the inner sidewall of the hemispherical shell, which helps increase the light-collecting field of view of the lens 400, enabling inspection of a field of view of approximately 180°. This facilitates comprehensive inspection of the lens 400 and increases the inspection range.

[0043] In some embodiments, continue to refer to Figure 1 As shown, a plurality of point light sources 110 are arranged in an array on the inner wall of the light-shielding half shell 100. Compared with a plurality of point light sources 110 arranged in a disorderly manner, the plurality of point light sources 110 arranged in a uniform array are evenly spaced, which is more conducive to checking the position where the lens 400 has a Flare, and is conducive to improving the detection accuracy. If no ghost or light spot is observed when controlling at least one point light source 110 at the corresponding position for detection, the other point light sources 110 of the plurality of point light sources 110 in the array can be controlled to emit light in turn, so as to detect in turn, which can improve more detailed and accurate detection. However, the interval between two point light sources 110 with a large interval among the plurality of point light sources 110 arranged in a disorderly manner cannot generate light, cannot be detected, and there is a risk of missed detection. That is, the present application is more conducive to improving detection accuracy.

[0044] In some embodiments, the lens detection device 10 has a first axis L and a reference plane, parallel to the light-shielding half-shell 100 and pointing toward the functional half-shell 200. The first axis L lies on the reference plane, and a scale is provided on the inner wall of the light-shielding half-shell 100 along the intersection of the reference plane and the light-shielding half-shell 100. The scale allows the image produced by the imaging device to accurately reflect the position of the activated point light source 110, facilitating the convenient determination of the corresponding flare position on the lens 400 and, in turn, improving detection convenience and efficiency.

[0045] In some embodiments, as Figure 1 As shown, along the extension direction of the intersection line of the reference plane and the light shielding half shell 100, the spacing between the multiple point light sources 110 is smaller than the spacing between the multiple point light sources 110 arranged in an array. By setting some point light sources 110 with a closer spacing, the detection accuracy is further improved.

[0046] In some embodiments, in conjunction with Figure 1 and Figure 2 As shown, the functional half-shell 200 includes a body 210, a mounting portion 220, and a rotating connector 230. The body 210 is connected to the light-shielding half-shell 100. The mounting portion 220 is disposed on the body 210 and spaced from the center of the light-shielding half-shell 100 along the extension direction of the first axis L. The mounting portion 220 is used to mount the lens 400. The rotating connector 230 is connected between the body 210 and the mounting portion 220 to enable the mounting portion 220 to rotate relative to the body 210 about the first axis L. It will be appreciated that turning on at least one point light source 110 and enabling the lens 400 to rotate relative to it about the first axis L changes the angle of the point light source 110 relative to the camera. Light incident at different angles helps simulate the situation in which light comes from different directions in actual photography, thereby facilitating a comprehensive assessment of the flare generated by the lens 400.

[0047] In some embodiments, the functional half shell 200 further includes a stopper 240. The mounting portion 220 defines a window connecting the working chamber and the exterior. The lens 400 is positioned through the window. The stopper 240 is disposed on the mounting portion 220 and located on one side of the window to limit the position of the lens 400. Specifically, the imaging device is disposed outside the functional half shell 200, and the lens 400 of the imaging device passes through the window and is at least partially positioned within the working chamber. The stopper 240 limits the position of the lens 400, providing stable support and fixation for the lens 400, thereby improving detection accuracy.

[0048] For the overall inspection of the imaging device, the lens 400 is at least partially located within the working chamber, and the imaging device is located outside the functional half-shell 200. This allows the captured image to be processed into a "normalized stray light measurement image," thereby achieving quantitative inspection and facilitating multi-faceted inspection of the lens 400. This also meets inspection standards such as ISO 9358.

[0049] In some embodiments, as Figure 1 and Figure 2 As shown, the body 210 includes a plurality of telescopic sub-shells 211. These sub-shells 211 are arranged sequentially along the extension direction of the first axis L, and one of two adjacent telescopic sub-shells 211 is configured to extend or retract relative to the other along the extension direction of the first axis L. This allows for adjustment of the size of the body 210 along the extension direction of the first axis L, and thus the distance between the lens 400 and the light-shielding half-shell 100. This allows for flexible adjustment based on detection requirements, allowing the point light source 110 to enter the lens 400 at varying angles of incidence, thereby better simulating the situation in which light comes from different directions during actual photography.

[0050] In some embodiments, the lens inspection device 10 further includes an opening and closing connector 120 and a latch 130. The opening and closing connector 120 is disposed between the light-shielding half-shell 100 and the functional half-shell 200. The latch 130 is connected to the light-shielding half-shell 100 at one end and to the functional half-shell 200 at the other end. The latch 130 allows the light-shielding half-shell 100 and the functional half-shell 200 to be locked and opened to each other, and the opening and closing connector 120 allows the two to be opened and closed, facilitating maintenance and inspection of components within the working chamber, such as maintenance and inspection of the point light source 110 on the light-shielding half-shell 100.

[0051] In some embodiments, the materials of the light-shielding half shell 100 and the functional half shell 200 are both light-shielding materials, so as to better isolate external light, provide a standard controllable scene for the lens 400 Flare detection, so that the detection has professional scene support and reduces the impact of other environmental factors on the detection.

[0052] In some embodiments, a light-shielding layer is provided on the inner wall of the light-shielding half shell 100 , for example, a light-shielding material structure such as graphite is coated on the inner wall, which helps to further improve the light-shielding effect and reduce the impact of other environmental factors on detection.

[0053] In some embodiments, the lens detection device 10 further includes a base 300 , which is disposed on one side of the light-shielding half shell 100 and is used to support the light-shielding half shell 100 , thereby supporting the entire light-shielding half shell 100 and the functional half shell 200 and other structures.

[0054] The lens detection device 10 of the present application has multiple advantages:

[0055] 1. The working chamber isolates external light and provides a standard controllable scene for the 400Flare lens detection, so that the detection has professional scene support and reduces the impact of other environmental factors on the detection.

[0056] 2. Controlling the point light sources 110 at different positions to emit light to the lens 400 respectively can simulate the situation in which light comes from different directions in actual shooting.

[0057] 3. Multiple point light sources 110 are arranged in an array, and a scale is provided on the inner wall of the light-shielding half shell 100 , and some point light sources 110 are arranged with a closer spacing, which is conducive to further improving the detection accuracy.

[0058] 4. A rotating connector 230 is provided to enable the lens 400 to rotate relative to the point light source 110 to change the angle of the point light source 110 relative to the camera. Light incident at different angles helps simulate the situation in which light comes from different directions in actual shooting, thereby facilitating a comprehensive evaluation of the flare generated by the lens 400.

[0059] 5. Detect the entire imaging device so that the lens 400 is at least partially located in the working chamber. The imaging device is located outside the functional half shell 200, and can process the captured image to achieve quantitative detection, which is conducive to realizing multi-faceted detection of the lens 400.

[0060] 6. A telescopic sub-shell 211 is provided to adjust the distance between the lens 400 and the light-shielding half-shell 100, so that it can be flexibly adjusted according to detection requirements, so that the point light source 110 can be incident on the lens 400 at different incident angles, thereby better simulating the situation in actual shooting where light comes from different directions.

[0061] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A lens detection device, characterized in that: The lens detection device comprises: Blackout half shell; a functional half shell, wherein the functional half shell and the light-shielding half shell together define a working cavity that is isolated from external light, and a window is provided on the functional half shell, wherein the window is used to accommodate a lens, and the lens is partially extended into the working cavity and faces the light-shielding half shell; A plurality of point light sources are arranged at intervals on the inner wall of the light-shielding half shell located at the working chamber, and at least one of the plurality of point light sources is configured to be independently switched.

2. The lens detection device according to claim 1, characterized in that: The light-shielding half shell includes a spherical half shell, and a plurality of the point light sources are arranged in an array on the inner wall of the light-shielding half shell.

3. The lens detection device according to claim 2, characterized in that: The lens detection device has a first axis parallel to the light-shielding half shell and pointing in the direction of the functional half shell, and a reference plane. The first axis is located on the reference plane. A scale is provided on the inner wall of the light-shielding half shell along the extension direction of the intersection line of the reference plane and the light-shielding half shell.

4. The lens detection device according to claim 3, characterized in that: Along the extension direction of the intersection line of the reference plane and the light-shielding half shell, the spacing between the plurality of point light sources is smaller than the spacing between the plurality of point light sources arranged in an array.

5. The lens detection device according to claim 3, characterized in that: The functional half shell includes a body, a mounting portion, and a rotating connector. The body is connected to the light-shielding half shell. The mounting portion is provided on the body and is spaced apart from the center of the light-shielding half shell along the extending direction of the first axis. The mounting portion is used to mount the lens. The rotating connection member is connected between the body and the mounting portion, so that the mounting portion can rotate relative to the body around the first axis.

6. The lens detection device according to claim 5, characterized in that: The functional half shell also includes a limiting member, the mounting portion is provided with a window connected to the working chamber and the outside, the lens is passed through the window, and the limiting member is provided on the mounting portion and located on one side of the window for limiting the lens.

7. The lens detection device according to claim 5, characterized in that: The main body includes a plurality of telescopic sub-shells, and the plurality of telescopic sub-shells are arranged in sequence along the extension direction of the first axis; Furthermore, along the extension direction of the first axis, one of the two adjacent telescopic sub-shells is configured to be able to extend or retract relative to the other one.

8. The lens detection device according to claim 1, wherein: The lens detection device further includes an opening and closing connector and a lock. The opening and closing connector is provided between the light-shielding half shell and the functional half shell. One end of the lock is connected to the light-shielding half shell, and the other end is connected to the functional half shell.

9. The lens detection device according to claim 1, wherein: The materials of the light-shielding half shell and the functional half shell are both light-shielding materials; and / or A light-shielding layer is provided on the inner wall of the light-shielding half shell.

10. The lens detection device according to claim 1, wherein: The lens detection device further includes a base, which is arranged on one side of the light-shielding half shell and is used to support the light-shielding half shell.

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