Protective glasses and shooting equipment

Abstract

The utility model relates to protective glasses and shooting equipment. The protective glass is detachably arranged on at least one lens system of the shooting equipment, and comprises a seat body used for being detachably connected with the shooting equipment; the lens body is arranged on the base body, the lens system and the lens body form a first optical system after the protection lens is installed, the lens body is located on the outermost side of the first optical system in the optical axis direction, the effective field angle of the first optical system is larger than or equal to 183 degrees, and the effective field angle of the second optical system is larger than or equal to 183 degrees. The base body is located outside the effective view field range of the first optical system. According to the protective glass, the lens system is protected, and meanwhile light receiving of the lens system is not affected.

Description

Technical Field

[0001] The present application relates to the technical field of panoramic photography, and in particular to a protective lens and photography equipment. Background Art

[0002] Existing panoramic shooting equipment such as sports cameras, drone cameras, panoramic monitoring, and car cameras are usually equipped with lens systems with ultra-large field of view angles such as fisheye lenses to achieve panoramic shooting effects. In order to avoid problems such as scratches and cracks caused by the exposure of the lens system, the shooting equipment is usually equipped with a protective lens to protect the lens system. The protective lens usually includes a lens body and a base body that are connected to each other. The base body is connected to the base of the shooting equipment, and the protective lens covers the lens system to provide protection for the lens system. However, the protective lens in the current shooting equipment is easy to affect the light collection of the lens system, which is not conducive to achieving a panoramic shooting effect. Summary of the invention

[0003] Based on this, it is necessary to provide a protective lens and shooting equipment to address the problem that the protective lens easily affects the light collection of the lens system, which is not conducive to achieving a panoramic shooting effect.

[0004] A protective lens, which can be detachably mounted on at least one lens system of a photographing device, comprises:

[0005] A seat body, used for detachably connecting with the photographing equipment;

[0006] The mirror body is arranged on the seat body. After the lens system is installed with the protective mirror, it forms a first optical system with the mirror body. The mirror body is located at the outermost side of the first optical system along the optical axis direction, wherein:

[0007] The effective field angle of the first optical system is greater than or equal to 183°, and the base is located outside the effective field angle of the first optical system.

[0008] A shooting device comprises a base, a lens system arranged in the base and the above-mentioned protective mirror, wherein the base body of the protective mirror is detachably connected to the base, and the body of the protective mirror covers the lens system.

[0009] The protective lens, while providing a lens body to protect the lens system and prevent the lens system from being damaged due to scratches, also designs the effective field angle of the first optical system to be greater than or equal to 183°, so that the first optical system formed after the lens system is installed with the protective lens can also have a sufficiently large field angle to meet the requirements of panoramic shooting, and prevent the protective lens from affecting the light collection of the lens system and affecting the line of sight of panoramic shooting. In addition, the seat body is detachably connected to the shooting device, so that the protective lens can be detachably arranged on the shooting device, which is convenient for replacement and maintenance of the protective lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Schematic diagram of the structure of a shooting device in some embodiments.

[0011] Figure 2 Schematic cross-sectional view of some components of the photographing device in some embodiments.

[0012] Figure 3 Schematic diagram of the structure of the mirror body and the outermost lens of the lens system in the first embodiment.

[0013] Figure 4 Schematic diagram of the structure of the mirror body and the outermost lens of the lens system in the second embodiment.

[0014] Figure 5 Schematic diagram of the structure of the mirror body and the outermost lens of the lens system in the third embodiment.

[0015] Figure 6 Schematic diagram of the structure of the mirror body and the outermost lens of the lens system in the fourth embodiment.

[0016] Figure 7 Schematic diagram of the structure of the mirror body and the outermost lens of the lens system in the fifth embodiment.

[0017] Figure 8 Schematic diagram of the structure of the mirror body and the outermost lens of the lens system in the sixth embodiment.

[0018] Fig. 9 This is a schematic diagram of the structure in which the edge of the protective mirror is connected to the base through a protrusion in some embodiments.

[0019] Fig.10 for Fig. 9 Exploded view of the protective mirror shown.

[0020] Fig.11 for Fig. 9 The structure diagram of the embodiment shown is a side of the lens portion facing the lens system.

[0021] Fig.12 This is a schematic diagram of the structure in which the edge of the protective mirror is connected to the base through a snap-fit ​​structure in some embodiments.

[0022] Fig.13 for Fig.12 Exploded view of the protective mirror shown.

[0023] Fig.14 This is a schematic diagram of the structure in which the edge of the protective mirror is connected to the base through a matching portion in some embodiments.

[0024] Fig.15 for Fig.14 A schematic diagram of the structure of the protective mirror from another angle is shown.

[0025] Fig.16 for Fig.14 Exploded view of the protective mirror shown.

[0026] Fig.17 This is a schematic diagram of the structure in which the protective mirror of the shooting device is magnetically fixed to the base in some embodiments.

[0027] Fig.18 for Fig.17 An exploded schematic diagram of the photographing equipment is shown.

[0028] Fig.19 Schematic diagram of an explosion in which a photographing device is provided with a waterproof structure in some embodiments.

[0029] Fig. 20 for Figure 2 A partial enlarged schematic diagram of the circular frame area of ​​the shooting device is shown.

[0030] Fig.21 Schematic diagram of the structure of the base in some embodiments.

[0031] Fig. 22 This is a schematic diagram of the structure in which the locking structure is located in the third notch in some embodiments.

[0032] Fig.23 This is a schematic diagram of the structure of the engaging structure entering the rotating groove in some embodiments.

[0033] Fig.24 Schematic diagram of the structure in which the first protrusion is embedded in the card slot in some embodiments.

[0034] Fig.25 It is a schematic diagram of the structure in which the snap-fit ​​structure of the protective mirror is rotatably connected to the base in some embodiments.

[0035] Fig.26 It is a schematic structural diagram of the engaging structure in the first state in some embodiments.

[0036] Fig. 27 It is a schematic structural diagram of the engaging structure in the second state in some embodiments.

[0037] Reference numerals:

[0038] 10. Shooting device; 11. Main body; 12. Base; 121. Magnetic element; 122. Accommodating groove; 123. Matching surface; 124. Frame; 125. Clamping matching structure; 1251. Rotating groove; 1252. Clamping groove; 126. Second main body; 127. Second cantilever; 1271. Third notch; 1272. Bump; 13. Lens system; 20. Protective lens; 21. Base; 211. First main body; 212. First cantilever; 2121. First notch; 2122. Sliding groove; 213. Protrusion; 214. Snap-fitting groove; 215. Second notch; 216. Flexible structure; 2161. Clamping part; 2 17. Boss; 218. Base; 219. Snap-fit ​​structure; 2191. First convex point; 2192. Second convex point; 2193. Limiting groove; 221. Elastic connecting piece; 222. Rotating groove; 23. Mirror body; 231. First surface; 232. Second surface; 233. Spacing space; 234. Lens portion; 235. Edge portion; 2351. Protrusion; 2352. Recess; 2353. Lever; 2354. Snap-fit ​​structure; 2355. Connecting portion; 2356. Snap-fit ​​portion; 2357. Matching portion; 236. Magnetic matching piece; 237. Adhesion structure; 238. Waterproof structure; 239. Adhesive structure. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0040] In the description of the present 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 the present 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 the present application.

[0041] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0043] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it 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. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] 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 a central 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 a central element at the same time. 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 implementation method.

[0045] See also Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the structure of the shooting device 10 in some embodiments, Figure 21 is a cross-sectional schematic diagram of a partial structure of a shooting device 10 in some embodiments. The shooting device 10 provided in the present application includes but is not limited to a sports camera, a drone camera, a panoramic monitoring, a car camera, etc. The shooting device 10 may include a housing, a lens system 13, and a protective lens 20 that can be detachably mounted on the lens system 13. The housing may include a body 11 and a base 12. The lens system 13 may be disposed in the body 11 or in the base 12. The base 12 may be disposed around the lens system 13. The protective lens 20 may be detachably connected to the base 12. When the protective lens 20 is mounted on the base 12, the protective lens 20 may cover the object side of the lens system 13 to provide protection for the lens system 13. The material of the body 11 and the base 12 includes but is not limited to any material such as plastic or metal. The body 11 and the base 12 may be an integrally formed structure or a split structure. The base 12 may be a structural member provided on the body 11 for mounting the protective lens 20. The body 11 may be a structural member for mounting other components such as batteries and circuit boards of the photographing device 10. The lens system 13 may be composed of one or more lenses with optical power coaxially arranged. The lens system 13 includes but is not limited to lenses with a large field of view such as fisheye lenses, so that the photographing device 10 can realize a panoramic shooting function.

[0046] In some embodiments, the protective lens 20 includes a base 21 and a lens body 23. The base 21 is used to be detachably connected to the base 12 so that the protective lens 20 can be detachably mounted on the lens system 13. The lens body 23 is disposed on the base 21, for example, integrally formed with the base 21, or fixed to the base 21 by any suitable connection method such as gluing, snapping, etc. The lens body 23 adopts a light-transmitting structure. When the lens system 13 is installed with the protective lens 20, the lens system 13 and the lens body 23 form a first optical system. The lens body 23 is located at the outermost side of the first optical system along the optical axis direction. Light from the object side of the lens body 23 passes through the lens body 23 and each lens in the lens system 13 in sequence and then is projected onto the image sensor of the lens system 13 to form an image.

[0047] In some embodiments, the shooting device 10 is provided with two or more lens systems 13 and two or more protective lenses 20. The number of lens systems 13 is equal to the number of protective lenses 20. The lens systems 13 and the protective lenses 20 are in a one-to-one correspondence. Each protective lens 20 can be detached and assembled on a corresponding lens system 13 through the base 12. Each lens system 13 and the corresponding protective lens 20 form a first optical system. The field of view angles of the multiple first optical systems partially overlap, and the sum of the non-overlapping field of view angles of the multiple first optical systems is equal to 360 degrees. Therefore, when the shooting device 10 shoots images through multiple first optical systems, the images shot by the multiple first optical systems can be spliced ​​into a panoramic image through an algorithm, thereby achieving a panoramic shooting effect.

[0048] For example, in each embodiment of the present application, the shooting device 10 is provided with two lens systems 13, the optical axes of the two lens systems 13 are parallel to each other and the two lens systems 13 are arranged opposite to each other, the two lens systems 13 are respectively surrounded by two bases 12, or are surrounded by the same base 12, and the shooting device 10 is also provided with two protective lenses 20, and the bases 21 of the two protective lenses 20 can be detachably connected to the base 12, so as to be respectively installed on the two lens systems 13. Each lens system 13 and the protective lens 20 form a first optical system, and the effective field of view angle of each first optical system is greater than or equal to 183°, so that the two first optical systems have a sufficiently large overlapping field of view, and it is easier to obtain a panoramic image with good imaging quality by stitching the images taken by the two first optical systems through an algorithm. The effective field of view angle of the optical system can be understood as the maximum field of view corresponding to the effective image field, and the effective image field is the effective imaging area of ​​the optical system. In some embodiments, the base 21 is connected to the edge of the lens body 23, and the base 21 is located outside the effective field of view of the first optical system. While the protective lens 20 can be disassembled and assembled through the base 21, the influence of the base 21 on the field of view and imaging quality can also be reduced, which is conducive to better achieving panoramic shooting effects.

[0049] Of course, the number of lens systems 13 and protective lenses 20 is not limited to the embodiments of the present application. In other embodiments, the number of protective lenses 20 may be less than the number of lens systems 13, and each protective lens 20 covers two or more lens systems 13. As long as a panoramic shooting effect can be achieved and protection can be provided for the lens system 13, it will not be elaborated in the present application.

[0050] The above-mentioned protective lens 20, while providing a lens body 23 to protect the lens system 13 and prevent the lens system 13 from being damaged due to scratches, also designs the effective field angle of the first optical system to be greater than or equal to 183°, so that the first optical system formed after the lens system 13 is installed with the protective lens 20 can also have a sufficiently large field angle to meet the requirements of panoramic shooting, thereby preventing the protective lens 20 from affecting the light collection of the lens system 13 and affecting the line of sight of panoramic shooting.

[0051] Furthermore, in some embodiments, the mirror body 23 has a refractive power, for example, the mirror body 23 has a positive focal length or a negative focal length, and can converge or diverge the light. The mirror body 23 and each lens in the lens system 13 can be coaxially arranged, and the mirror body 23 can participate in the adjustment of the light in the shooting device 10. The mirror body 23 and each lens in the lens system 13 jointly adjust the light, thereby improving the field of view and imaging quality of the shooting device 10.

[0052] The above-mentioned protective lens 20 is provided with a lens body 23 with refractive power. The lens body 23 can also participate in the adjustment of light in the first optical system, which makes it difficult for the lens body 23 to affect the light collection of the lens system 13. The lens body 23 can even improve the light collection range of the shooting device 10 through the optical focal length design of the lens body 23. At the same time, while providing protection for the lens system 13, the lens body 23 can also participate in the adjustment of light, reduce the burden on the lens system 13, and improve the imaging quality of the shooting device 10. In addition, the base 21 is detachably connected to the shooting device 10, so that the protective lens 20 can be detachably arranged on the shooting device 10, which makes the replacement and maintenance of the protective lens 20 more convenient, and the protective lens 20 with different light adjustment functions can be replaced according to different shooting requirements to cooperate with the lens system 13 to achieve different shooting effects, thereby making full use of the protective lens 20 to improve the shooting performance of the shooting device 10. For example, the shooting device 10 can be equipped with a variety of protective lenses 20 with different optical focal lengths. The protective lens 20 can be selected to be installed according to the shooting requirements to form a first optical system with different field of view angles or shooting qualities with the lens system 13 to enrich the shooting function of the shooting device 10.

[0053] In some embodiments, the lens system 13 without the protective lens 20 installed constitutes a second optical system, and the effective field of view of the second optical system is greater than or equal to 183°. Therefore, when the protective lens 20 is not installed, the two lens systems 13 arranged opposite to each other can also have a sufficient overlapping field of view, which is conducive to obtaining a panoramic image by splicing the images of the two second optical systems, so that the shooting device 10 has more shooting modes and enriches the shooting function of the shooting device 10. In some embodiments, the actual field of view of the second optical system is not less than the actual field of view of the first optical system, wherein the actual field of view of the optical system can be understood as the maximum field of view actually possessed by the optical system, and the effective field of view of the optical system can be understood as the maximum field of view corresponding to the effective image field. Therefore, the lens body 23 of the protective lens 20 will not affect the light collection of the lens system 13, and can ensure the realization of the panoramic shooting effect while providing protection for the lens system 13.

[0054] In some embodiments, the body 11 of the shooting device 10 is located within the actual field of view of the second optical system and outside the effective field of view of the second optical system, for example, within the overlapping field of view of two second optical systems disposed opposite to each other. For example, in some embodiments, the effective field of view of the second optical system is 183°, the actual field of view is 200°, and the body 11 of the shooting device 10 is located within the field of view of 183°-200° of the second optical system. As a result, when stitching together a panoramic image, the image of the body 11 can be completely cut off to avoid the influence of the body 11 on the panoramic shooting effect.

[0055] In some embodiments, the mirror body 23 has a first surface 231 facing away from the lens system 13 and a second surface 232 facing the lens system 13. When the mirror body 23 is a lens structure, the first surface 231 and the second surface 232 are two opposite surfaces of the mirror body 23. When the mirror body 23 includes multiple lens structures, the first surface 231 is located at the outermost side of the mirror body 23 along the optical axis direction, and the second surface 232 is located at the innermost side of the mirror body 23 along the optical axis direction. In some embodiments, the first surface 231 is convex toward the side facing away from the lens system 13, and the second surface 232 is concave toward the lens system 13. In other words, the first surface 231 is a convex surface, and the second surface 232 is a concave surface. In some embodiments, the first surface 231 is a spherical surface, which can improve the anti-scratch performance of the mirror body 23 while improving the imaging quality, thereby providing better protection for the lens system 13. The second surface 232 can also be a spherical surface to reduce the difficulty of designing and manufacturing the mirror body 23. Of course, the surface shape and optical focal length design of the mirror body 23 are not limited to the records in this application. According to different protection and shooting requirements, the mirror body 23 can also have any other applicable design, which will not be elaborated in this application.

[0056] In some embodiments, the photographing device 10 is further provided with a mounting portion (not shown) and an extension member (not shown). The extension member may be an extension rod structure such as a selfie stick configured for the photographing device 10, and the mounting portion may be a structural member provided on the body 11 for mounting the extension member. When the extension member is connected to the body 11 through the mounting portion, the extension member is at least partially located outside the effective field of view of the first optical system and the second optical system, for example, outside the 183° field of view of the first optical system and the second optical system, so as to prevent the extension member from affecting the panoramic shooting effect of the photographing device 10. In some embodiments, one end of the extension member is connected to the photographing device 10 through the mounting portion, and in the direction of the optical axis, the height of one end of the extension member connected to the photographing device 10 is lower than the height of the body 11 of the photographing device 10, which is conducive to making the extension member outside the effective field of view of the first optical system and the second optical system. In some embodiments, at least a portion of the extension member is located within the actual field of view of the first optical system and the second optical system. In some embodiments, the extension piece is located outside the effective field of view of the first optical system and the second optical system, and is located within the actual field of view, for example, within the field of view of 183° and 200°. When the images taken by the two lens systems 13 are spliced ​​to form a panoramic image, the image of the extension piece can be cut off, which will not affect the panoramic shooting effect and can also improve the setting flexibility of the extension piece.

[0057] In some embodiments, the mirror body 23 and the lens system 13 are spaced apart, and there is a space 233 between the second surface 232 and the object side of the outermost lens of the lens system 13. The shooting device 10 is provided with a connecting portion (not shown in the figure) to connect the space 233 and the external space, so that the water vapor in the space 233 can be discharged to the outside through the connecting portion in time, so as to prevent the mirror body 23 or the lens system 13 from fogging and affecting the imaging quality. For example, in some embodiments, the mirror body 23 is provided with a first connecting portion connected to the space 233 and the external space, and the first connecting portion can be a through hole provided at the edge of the mirror body 23. In some embodiments, a second connecting portion is provided between the base 21 or between the base 21 and the base 12 of the shooting device 10, and the second connecting portion connects the space 233 and the external space. The second connecting portion can be a through hole formed on the base 21, or a gap between the base 21 and the base 12. In some embodiments, the base 12 is provided with a third connecting portion connected to the partition space 233 and the external space. The third connecting portion may be a through hole or a gap formed on the base 12 .

[0058] In some embodiments, an anti-fog layer (not shown) is provided on the second surface 232 of the mirror body 23 to prevent water vapor from fogging on the second surface 232 and affecting the imaging quality of the first optical system. The anti-fog layer can be made by AR coating process, and the anti-fog layer includes but is not limited to an electrothermal anti-fog layer, a nano anti-fog layer or an organic anti-fog coating.

[0059] In some embodiments, the protective lens 20 is provided with a mark (not shown in the figure), which can be any applicable graphic or pattern set on the lens body 23 or the base body 21, and the mark is used for the shooting device 10 to identify the installation status of the protective lens 20. For example, during the use of the shooting device 10, an image is captured by the lens system 13 to determine whether there is a mark in the image. If there is a mark, it can be determined that the protective lens 20 is installed in place, so that the shooting operation is performed using a shooting mode adapted to the protective lens 20. More details of the protective lens 20 identification method will be developed later. In some embodiments, the mark is located outside the effective field of view of the first optical system and is located within the actual field of view of the first optical system, for example, within the field of view of 183°-200°. It is possible to identify the installation status of the protective lens 20 by shooting the mark, and it is also possible to cut off the mark image during panoramic shooting to avoid the setting of the mark affecting the panoramic shooting effect.

[0060] In some embodiments, the shooting device 10 satisfies: -2mm≤VP≤2mm, where VP is the distance between the first intersection and the second intersection along the optical axis; the first intersection is the intersection of the optical path of the actual field of view of the second optical system on the optical axis; the second intersection is the intersection of the optical path of the actual field of view of the first optical system on the optical axis, and VP can be -2mm, -1mm, 0, 1mm or 2mm, etc. Meeting the above conditions can ensure that the viewpoint depth of the first optical system and the viewpoint depth of the second optical system in the optical axis direction are within a reasonable range, avoiding the setting of the protective lens 20 from affecting the light collection and panoramic stitching of the shooting device 10, which is conducive to achieving a panoramic shooting effect.

[0061] In some embodiments, the shooting device 10 satisfies: 3.13mm≤SG2-CT1≤4.08mm, where SG2 is the sagittal height of the second surface 232, CT1 is the distance from the second surface 232 to the outermost lens of the lens system 13 on the optical axis, and SG2-CT1 includes but is not limited to 3.13mm, 3.45mm, 3.98mm or 4.08mm. When the above conditions are met, the influence of the protective lens 20 on the light collection of the lens system 13 can be reduced while the axial dimension of the first optical system is compressed, which is conducive to achieving a panoramic stitching shooting effect.

[0062] In some embodiments, the mirror body 23 satisfies: 0.023≤CGCT / ΦH≤0.075; wherein CGCT is the distance between the first surface 231 and the second surface 232 on the optical axis, and ΦH is the radial dimension of the mirror body 23. When the above conditional formula is met, the ratio of the center thickness and the radial dimension of the mirror body 23 can be reasonably configured, which is conducive to compressing the space occupied by the mirror body 23, making the protective lens 20 more closely attached to the body 11 of the shooting device 10, realizing the miniaturized design of the protective lens 20, and improving the portability of the shooting device 10.

[0063] In some embodiments, the protective mirror 20 satisfies: 0.98≤CGR1 / CGR2≤2.28; wherein CGR1 is the radius of curvature of the first surface 231, and CGR2 is the radius of curvature of the second surface 232. CGR1 / CGR2 can be 0.98, 1.22, 1.53, 1.89 or 2.28. Meeting the above conditions, the ratio of the radius of curvature of the first surface 231 and the second surface 232 can be reasonably designed, thereby reasonably configuring the light deflection ability of the protective mirror 20, improving the light collecting ability of the mirror body 23, and helping to improve the field of view angle and imaging quality of the first optical system. Furthermore, in some embodiments, the protective mirror 20 satisfies: CGR1 / CGR2≤1.22, which can further improve the field of view range and imaging quality of the first optical system.

[0064] In some embodiments, the protective lens 20 satisfies: 0.5 mm ≤ CT1 ≤ 7.5 mm. CT1 can be 0.5 mm, 3.7 mm, 6.8 mm, or 7.5 mm, etc. When the above conditional formula is met, the shortest distance between the lens body 23 and the lens system 13 on the optical axis can be reasonably configured, so that the lens body 23 does not protrude excessively from the body 11 of the shooting device 10, which is conducive to realizing the miniaturization design of the shooting device 10, thereby improving the aesthetics and portability of the shooting device 10.

[0065] In some embodiments, the protective mirror 20 satisfies: 1.42≤Vd≤1.8; wherein Vd is the refractive index of the mirror body 23. Vd may be 1.43, 1.51, or 1.73. The material of the mirror body 23 includes, but is not limited to, glass or plastic. When the material of the mirror body 23 is glass, such as K9 glass, the refractive index of the mirror body 23 may be 1.5168. When the material of the mirror body 23 is plastic, the refractive index of the mirror body 23 may be 1.4918. Meeting the above conditions can reasonably configure the light deflection capability of the mirror body 23, which is beneficial to improving the field of view and imaging quality of the first optical system.

[0066] In some embodiments, the protective lens 20 satisfies: 40≤FA≤100; wherein FA is the material abrasion degree of the lens body 23, and FA can be 40, 60, 80 or 100. When the above conditional formula is met, the lens body 23 has a suitable material abrasion degree and is not easily damaged by scratches, and can have good optical performance while also providing effective protection for the lens system 13.

[0067] In some embodiments, the light transmittance of the mirror body 23 is greater than or equal to 93%, for example, it can be 95% or 97%, etc. When the above conditional formula is met, the mirror body 23 has good light transmittance, and can provide protection for the lens system 13 while also achieving good optical performance, which is beneficial to improving the imaging quality of the first optical system.

[0068] Based on the above description, the present application provides six embodiments of the protective mirror 20 as examples.

[0069] refer to Figure 3 and Table 1, Figure 3 1 is a schematic diagram of the structure of the mirror body 23 and the outermost lens of the lens system 13 in the first embodiment. Table 1 is the parameters of the mirror body 23 in the first embodiment, wherein the surface serial number S1 represents the first surface 231, S2 represents the second surface 232, the R value represents the curvature radius of the corresponding surface, the first row of thickness represents the center thickness of the mirror body 23, and the second row represents the distance from the second surface 232 to the object side surface of the outermost lens of the lens system 13 on the optical axis. The same is true for other embodiments.

[0070] Table 1

[0071] Surface number Surface type R value(mm) Thickness(mm) Refractive Index Abbe number S1 Spherical 18.33 2 1.51 64 S2 Spherical 17.47 6.02

[0072] refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, Figure 4-Figure 8 They are schematic diagrams of the structures of the mirror body 23 and the outermost lens of the lens system 13 in the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment and the sixth embodiment respectively. The following Tables 2, 3, 4, 5 and 6 are the parameters of the mirror body 23 in the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment and the sixth embodiment respectively.

[0073] Table 2

[0074] Surface number Surface type R value(mm) Thickness(mm) Refractive Index Abbe number S1 Spherical 20.38 2 1.51 64 S2 Spherical 18.27 3.45

[0075] Table 3

[0076] Surface number Surface type R value(mm) Thickness(mm) Refractive Index Abbe number S1 Spherical 22.87 1 1.51 64 S2 Spherical 22.54 0.97

[0077] Table 4

[0078]

[0079]

[0080] Table 5

[0081] Surface number Surface type R value(mm) Thickness(mm) Refractive Index Abbe number S1 Spherical 22.81 1.3 1.73 51 S2 Spherical 22.24 0.7

[0082] Table 6

[0083] Surface number Surface type R value(mm) Thickness(mm) Refractive Index Abbe number S1 Spherical 17.41 1.41 1.43 94 S2 Spherical 16.98 6.5

[0084] In each embodiment, the photographing device 10 also satisfies the data in the following Table 7. The meaning of the following data and the effects that can be obtained by satisfying the following data can be obtained from the above records:

[0085] Table 7

[0086] Relational Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 CGCT / ΦH 0.057 0.060 0.033 0.038 0.045 0.042 CGR1 / CGR2 1.049 1.115 1.0149 1.027 1.0256 1.0253 CT1(mm) 6.02 3.45 0.97 2.22 0.7 6.5 SG2-CT1(mm) 4.07 3.804 3.82 3.52 3.95 3.922 Vd 1.51 1.51 1.51 1.51 1.73 1.437 FA≤100 100 100 100 100 355 61

[0087] It can be understood that the seat body 21 and the base 12 are detachably connected, which can make the maintenance and replacement of the protective lens 20 more convenient, and can also replace the protective lens 20 with different optical focal lengths according to different shooting requirements to enrich the shooting function of the shooting device 10. In some embodiments, the lens body 23 of the protective lens 20 and the seat body 21 can also be detachably connected, so that the lens body 23 can be maintained or replaced without disassembling the seat body 21.

[0088] Combination Fig. 9 , Fig.10 and Fig.11 As shown, in some embodiments, the mirror body 23 includes a lens portion 234 and an edge portion 235 that are connected to each other. The lens portion 234 can be an optical part of the mirror body 23. The lens portion 234 is made of a light-transmitting material and has optical power. The lens portion 234 is used to cover the lens system 13 and together with the lens system 13, form a first optical system. The edge portion 235 is detachably connected to the base 21. The lens portion 234 can be integrally formed with the edge portion 235, and the edge portion 235 can be a part of the end of the mirror body 23. The lens portion 234 can also be separated from the edge portion 235 and fixedly connected by any applicable connection method such as gluing, snapping, etc. The material of the edge portion 235 includes but is not limited to glass, plastic, or metal. In some embodiments, the edge portion 235 can be used as a base and directly detachably connected to the base 12.

[0089] In some embodiments, a plurality of protrusions 2351 are provided on the peripheral side of the edge portion 235, the number of the protrusions 2351 includes but is not limited to three or more, and the plurality of protrusions 2351 are sequentially spaced along the axial direction of the edge portion 235. The seat body 21 is provided with a plurality of first notches 2121 and a plurality of slide grooves 2122 connected to the first notches 2121, the first notches 2121 correspond to the protrusions 2351 one by one, and each protrusion 2351 can enter the slide groove 2122 through the first notch 2121, and slide in the slide groove 2122 until the edge portion 235 and the seat body 21 are relatively fixed.

[0090] In some embodiments, the base 21 includes a first body 211 and a plurality of first cantilevers 212 connected to the inner side of the first body 211. The plurality of first cantilevers 212 are sequentially arranged along the circumference of the first body 211, and a first notch 2121 is formed between two adjacent first cantilevers 212. A slide groove 2122 is formed on the side of the first cantilever 212 facing away from the lens portion 234, and a protrusion 2351 located in the slide groove 2122 abuts against the surface of the first cantilever 212 facing away from the lens portion 234. The slide groove 2122 can be formed by the first cantilever 212 and the first body 211, or can be formed by the first cantilever 212, the first body 211 and the base 12. When the protrusion 2351 is located in the slide groove 2122, one side of the protrusion 2351 abuts against the first cantilever 212, and the other side can abut against the first body 211 or the base 12, thereby realizing the limitation of the protrusion 2351 on both sides in the optical axis direction.

[0091] In some embodiments, the first body 211 is further provided with a convex portion 213 located in the slide groove 2122, and the protrusion 2351 is provided with a recess 2352 corresponding to the protrusion 213, and the protrusion 213 can be embedded in the recess 2352. It can be understood that when the protrusion 2351 slides in the slide groove 2122 until the protrusion 213 is opposite to the recess 2352, the protrusion 213 is embedded in the recess 2352, which can achieve the circumferential limit of the protrusion 2351, and cooperate with the limit of the first cantilever 212 in the optical axis direction, so that the edge portion 235 and the base 21 can be fixed to each other, so that the mirror body 23 is installed on the base 21.

[0092] In some embodiments, a lever 2353 is further provided on the peripheral side of the edge portion 235, and the radial dimension of the lever 2353 is greater than the radial dimension of the protrusion 2351. When the protrusion 2351 is located in the slide groove 2122, the lever 2353 abuts against the first body 211 and can slide along the surface of the first body 211 in the circumferential direction of the first body 211. Fig. 9 The dashed arrow indicates the sliding direction of the lever 2353 relative to the first body 211. The lever 2353 is provided as a force point, so that the operation of driving the edge portion 235 to rotate relative to the base 21 is more convenient, so as to drive the protrusion 2351 to slide in the slide groove 2122. In some embodiments, the lever 2353 may overlap with a portion of one of the protrusions 2351 in the optical axis direction, and when the protrusion 2351 slides along the first body 211 to abut against the side of one of the first cantilevers 212, the protrusion 213 is just embedded in the recess 2352, so that the edge portion 235 and the base 21 can be accurately positioned.

[0093] Combination Fig.12 and Fig.13 As shown, in some embodiments, the edge portion 235 can also be detachably connected to the seat body 21 by snapping, and a plurality of snapping structures 2354 are provided on the circumferential side of the edge portion 235, and the number of the snapping structures 2354 includes but is not limited to three, and the plurality of snapping structures 2354 are arranged in sequence and spaced apart along the circumference of the edge portion 235, and the seat body 21 is provided with a plurality of snapping grooves 214 along the circumferential side, and the snapping grooves 214 correspond one-to-one to the snapping structures 2354, and a portion of the snapping structure 2354 can be embedded in the snapping grooves 214, so that the edge portion 235 and the seat body 21 are relatively fixed.

[0094] In some embodiments, the buckling structure 2354 includes a connecting portion 2355 connected to the edge portion 235 and a buckling portion 2356 disposed inside the connecting portion 2355. A plurality of second notches 215 are disposed on the circumferential side of the base 21. The second notches 215 correspond to the positions of the buckling grooves 214 one by one. For example, the buckling grooves 214 are disposed in the second notches 215. The size of the second notches 215 in the circumferential direction is larger than the size of the buckling grooves 214. When the buckling portion 2356 is embedded in the buckling grooves 214, the connecting portion 2355 is at least partially accommodated in the second notches 215. Thus, when the edge portion 235 and the base 21 are buckled relative to each other, the buckling structure 2354 will not protrude from the base 21, thereby improving the appearance integrity of the photographing device 10.

[0095] Combination Fig.14 , Fig.15 and Fig.16 As shown, the present application also provides another detachable connection method in which the edge portion 235 is snapped together with the base body 21. In some embodiments, the peripheral side of the edge portion 235 is provided with a mating portion 2357 protruding outward, and the base body 21 includes a first main body 211 and a clamping portion 2161 protruding toward the inner side of the first main body 211. The clamping portion 2161 has elastic deformation capability. The material of the clamping portion 2161 includes but is not limited to any suitable plastic or other material that can undergo elastic deformation. The mating portion 2357 can pass through the clamping portion 2161 and abut against the mating portion 2357 on the side of the clamping portion 2161 facing away from the lens portion 234. It can be understood that when installing the edge portion 235, the clamping portion 2161 is squeezed by the matching portion 2357, causing the clamping portion 2161 to be deformed, so that the matching portion 2357 can pass through the clamping portion 2161 and enter the side of the clamping portion 2161 that is away from the lens portion 234. When the matching portion 2357 enters the side of the clamping portion 2161 that is away from the lens portion 234, the clamping portion 2161 restores its original shape through elastic recovery, thereby abutting the matching portion 2357 between the clamping portion 2161 and the first main body 211, or between the clamping portion 2161 and the base 12, so that the mirror body 23 and the seat body 21 are relatively fixed.

[0096] In some embodiments, the seat 21 includes a flexible structure 216 sleeved on the first body 211, and a portion of the flexible structure 216 is convex inward to form a clamping portion 2161. In some embodiments, the matching portion 2357 is an annular structure extending along the circumference of the edge portion 235, and the seat 21 is provided with a plurality of clamping portions 2161, which are sequentially spaced along the circumference of the first body 211. By limiting the annular matching portion 2357 with a plurality of clamping portions 2161, the fixing stability of the mirror body 23 and the seat 21 can be improved, and the process of the matching portion 2357 entering and exiting the clamping portion 2161 can be made easier.

[0097] The following description of the present application provides several embodiments of the detachable connection between the seat body 21 and the base 12. Fig.17 and Fig.18 As shown, in some embodiments, a magnetic element 121 is provided on the base 12, and the magnetic element 121 includes but is not limited to any suitable element capable of generating a magnetic field, such as a magnet and an electromagnet. The magnetic element 121 can magnetically fix the base 21, thereby detachably fixing the protective mirror 20 on the base 12.

[0098] In some embodiments, the base 21 is made of metal material, such as steel or any other suitable material that can attract the magnetic element 121, and the magnetic element 121 can be attracted to the base 21. Fig.17 and Fig.18 In the illustrated embodiment, the protective mirror 20 also includes a magnetic fitting part 236 disposed on the base body 21. The material of the magnetic fitting part 236 includes but is not limited to a magnet or other magnetic material that can attract the magnetic element 121. The magnetic fitting part 236 is opposite to the magnetic element 121, and the magnetic fitting part 236 can be attracted to the magnetic element 121 so that the protective mirror 20 is magnetically fixed to the base 12.

[0099] In some embodiments, the base 12 is provided with an annular receiving groove 122, the receiving groove 122 is arranged around the lens system 13, the magnetic element 121 is an annular structure, and the magnetic element 121 is accommodated in the receiving groove 122. The magnetic attraction fitting 236 can also be an annular structure and is arranged along the extension direction of the base 21, which can not only adapt to the shape of the base 21, but also improve the fixing stability between the protective lens 20 and the base 12. In some embodiments, when the base 21 is fixed to the base 12, the magnetic attraction fitting 236 can also be partially embedded in the receiving groove 122, so that there will be no gap between the base 21 and the base 12, and the surface flatness can be maintained, and the appearance integrity of the shooting device 10 is improved. In some embodiments, the magnetic attraction fitting 236 can be adhered to the base 21 by an adhesive structure 237 such as glue, and the magnetic element 121 can also be fixed to the receiving groove 122 of the base 12 by the adhesive structure 237.

[0100] refer to Fig.19 and Fig. 20 As shown, in some embodiments, the protective lens 20 further includes a waterproof structure 238 connected to the base 21, the waterproof structure 238 has a flexible deformation function, and the material of the waterproof structure 238 includes but is not limited to a rubber material. The waterproof structure 238 is arranged around the lens body 23, and when the base 21 is connected to the base 12, the waterproof structure 238 can be squeezed by the base 12 to seal the gap between the base 12 and the base 21, so as to prevent liquid or dust from entering between the base 12 and the base 21 and between the protective lens 20 and the lens system 13 to affect the shooting quality.

[0101] In some embodiments, the base 12 has a mating surface 123 facing the base body 21, the mating surface 123 is arranged around the lens system 13, the mating surface 123 is a plane, and the mating surface 123 is opposite to the waterproof structure 238. When the base 12 and the base body 21 are relatively fixed, the waterproof structure 238 is squeezed by the flat mating surface 123, which can improve the sealing effect between the base 12 and the base body 21. In some embodiments, the waterproof structure 238 and the base body 21 are integrally molded by two-color injection molding, which can improve the connection stability of the waterproof structure 238 and the base body 21 and avoid the risk of the waterproof structure 238 falling off during the squeezing process.

[0102] refer to Fig. 20 As shown, in some embodiments, a double-sided tape or adhesive structure 239 such as glue can be provided between the mirror body 23 and the base body 21 to fix the connection, and a sealing effect between the mirror body 23 and the base body 21 can also be achieved, and a waterproof and dustproof function can be achieved. In some embodiments, a surface of the base body 21 facing away from the base 12 can also be provided with a boss 217 located outside the lens, and the boss 217 is arranged around the periphery of the mirror body 23 to form a step difference on the outside of the mirror body 23, which is conducive to improving the sealing effect between the mirror body 23 and the base body 21 in conjunction with the adhesive structure 239.

[0103] Combination Fig.21 , Fig. 22 , Fig.23 and Fig.24 As shown, in some embodiments, the seat body 21 includes a base 218 and a plurality of engaging structures 219 arranged at intervals along the inner circumferential direction of the base 218, and the base 12 includes a frame 124 and a locking matching structure 125 arranged on the frame 124, and the locking matching structure 125 is formed with a plurality of rotating grooves 1251 and a plurality of locking grooves 1252 along the axial side, and the rotating grooves 1251 and the locking grooves 1252 can be formed by the locking matching structure 125 and the frame 124 together, or can be formed by the locking matching structure 125 being recessed. The locking grooves 1252 are arranged in a one-to-one correspondence with the positions of the rotating grooves 1251, for example, the locking grooves 1252 can be arranged at the end of the rotating grooves 1251. The locking structures 219 can slide along the rotating grooves 1251 in a one-to-one correspondence until they are partially embedded in the locking grooves 1252, so that the seat body 21 and the base 12 can be relatively fixed in a detachable manner.

[0104] In some embodiments, the latching and matching structure 125 includes a second body 126 and a plurality of second cantilevers 127, wherein the plurality of second cantilevers 127 are connected to the outside of the second body 126 and are sequentially spaced along the circumference of the second body 126, and the second cantilevers 127, the second body 126 and the base 12 are jointly surrounded to form a rotating groove 1251, and the latching groove 1252 is provided at a position on the outer surface of the second body 126 corresponding to the end of the rotating groove 1251. A third notch 1271 is formed between two adjacent second cantilevers 127, and the third notch 1271 is provided in one-to-one correspondence with the latching structure 219. The latching structure 219 can enter the rotating groove 1251 through the third notch 1271, and slide along the rotating groove 1251 until it is partially embedded in the latching groove 1252, thereby realizing the relative fixation of the base 12 and the seat body 21. It can be understood that the snap-fit ​​structure 219 is disposed on the inner side of the base 218, and the second cantilever 127 is disposed on the outer side of the second main body 126. When the base 21 is fixedly connected to the base 12, the snap-fit ​​structure 219 and the snap-fitting structure 125 cannot be observed from the outside of the shooting device 10, which can improve the appearance integrity of the shooting device 10 while realizing a detachable connection.

[0105] Combination Fig.25 , Fig.26 and Fig. 27 As shown, in some embodiments, the engaging structure 219 can rotate relative to the base 218 to have a first state and a second state. In the first state, the engaging structure 219 can enter the rotating groove 1251 from the third notch 1271 and slide along the rotating groove 1251 one by one, and the engaging structure 219 can abut against the side wall of the second body 126. When the engaging structure 219 rotates and slides to the position where the engaging groove 1252 is located, the engaging structure 219 can switch to the second state and embed into the engaging groove 1252, so that the base 21 and the base 12 are fixed to each other. When the base 21 needs to be removed from the base 12, the engaging structure 219 can be pushed to switch to the first state, so that the engaging structure 219 is separated from the engaging groove 1252 and passes through the rotating groove 1251 and the third notch 1271 to leave the base 12.

[0106] In some embodiments, the seat body 21 further includes an elastic connector 221, which may be in the form of an elastic shaft, or include a shaft and a torsion spring disposed on the shaft, etc. The engaging structure 219 is rotatably connected to the base 218 through the elastic connector 221, and the engaging structure 219 is configured to have an elastic restoring force for switching from the first state to the second state under the elastic restoring force of the elastic connector 221. It can be understood that when the engaging structure 219 enters the rotary groove 1251, under the pushing action of the second body 126, the engaging structure 219 can be in the first state, and when the engaging structure 219 slides along the rotary groove 1251 to the position of the slot 1252, due to the elastic restoring force of the elastic connector 221, the engaging structure 219 switches to the second state and is partially embedded in the slot 1252, thereby achieving relative fixation of the base 12 and the seat body 21.

[0107] In some embodiments, a plurality of rotation grooves 222 are opened along the circumferential side of the base 218, the elastic connector 221 passes through the snap-fit ​​structure 219 and is disposed in the rotation groove 222, the elastic connector 221 is arranged roughly perpendicular to the radial direction of the base 218, and the snap-fit ​​structure 219 can rotate relative to the base 218 around the axis of the elastic connector 221 to switch between the first state and the second state.

[0108] In some embodiments, in the radial direction of the second body 126, there is a height difference between the portion of the outer surface of the second body 126 that defines the spiral groove 1251 and the bottom wall of the card slot 1252, and the minimum distance between the card structure 219 and the optical axis of the lens system 13 in the first state is greater than the minimum distance between the card structure 219 and the optical axis in the second state. Therefore, after the card structure 219 is embedded in the card slot 1252, the second body 126 can limit the card structure 219 in the circumferential direction, and the second cantilever 127 can limit the card structure 219 in the optical axis direction, thereby realizing the relative fixation of the seat body 21 and the base 12.

[0109] Please see again Figure 21-24 In other embodiments, the snap-fit ​​structure 219 is fixedly connected to the base 218, and the snap-fit ​​structure 219 includes a first protrusion 2191. When the snap-fit ​​structure 219 slides along the rotary groove 1251 to the position of the snap-fit ​​groove 1252, the first protrusion 2191 can be embedded in the snap-fit ​​groove 1252 to achieve relative fixation between the base 12 and the seat body 21.

[0110] In some embodiments, the second body 126 is provided with a protrusion 1272 located in the rotation groove 1251, and the protrusion 1272 and the second body 126 are surrounded to form the slot 1252. The locking structure 219 also includes a second protrusion 2192, and a limiting groove 2193 is formed between the first protrusion 2191 and the second protrusion 2192. When the first protrusion 2191 is embedded in the slot 1252, the protrusion 1272 is embedded in the limiting groove 2193, and the two sides of the protrusion 1272 are respectively abutted against the first protrusion 2191 and the second protrusion 2192 to improve the relative stability of the base 12 and the base body 21. Further, in some embodiments, the surface of the protrusion 1272 facing the base 218 and the side of the limiting groove 2193 are inclined surfaces or arc surfaces with shapes adapted to each other, which can improve the limiting effect between the protrusion 1272 and the base 218, thereby further improving the relative stability of the base 12 and the base body 21.

[0111] It should be noted that, under the premise that the structural settings do not conflict, the above-mentioned embodiments can be arbitrarily combined to achieve corresponding or better effects. For example, in the manner in which the seat body 21 and the base 12 are magnetically fixed by the magnetic element 121, a snap-fitting structure 125 and a snap-fitting structure 219 can also be simultaneously provided to enhance the relative fixed stability between the seat body 21 and the base 12. Other combinations of the embodiments can be provided with reference to the above-mentioned records and will not be described in detail in this application.

[0112] Based on the photographing device 10 described in any of the above embodiments, the present application further provides a protective lens 20 identification method, which is used to identify the installation status of the protective lens 20 on the photographing device 10, for example, to identify whether the protective lens 20 is installed in place on the base 12, or, when the photographing device 10 is configured with a plurality of protective lenses 20 with different optical powers, to identify the type of protective lens 20 installed on the base 12. In some embodiments, the protective lens 20 identification method includes:

[0113] Acquire a first image, and identify whether the first image contains a target feature;

[0114] When it is recognized that the first image contains target features, enter or switch to a preset mode, or, when it is recognized that the first image contains target features, receive user input to enter or switch to a preset mode. In different preset modes, the shooting device 10 has different shooting parameters and stitching parameters.

[0115] For example, since the shooting device 10 has different shooting performances when the protective lens 20 is not installed and when the protective lens 20 is installed, or the installed protective lens 20 is of different types, different preset modes are pre-set according to the different shooting performances of the shooting device 10, and different preset modes correspond to shooting parameters such as exposure parameters, color difference, sensitivity, or at least one different stitching parameter such as the stitching fusion angle when stitching panoramic images, and the effective area of ​​the overlapping area. Before the shooting operation, the first image captured by the lens system 13 is first obtained, and the target features in the first image are identified to determine the installation status of the protective lens 20, and then automatically enter or switch to the corresponding preset mode, or the user manually determines the installation status of the protective lens 20 through the first image, thereby receiving user input to enter or switch to the corresponding preset state, and switching different shooting performances to achieve different shooting effects. Among them, the installation status of the protective lens 20 includes whether the protective lens 20 is installed in place, and what type of protective lens 20 is installed.

[0116] The setting of the target feature is not limited. In some embodiments, the target feature can be a feature of the body 23 of the protective lens 20, such as a figure or pattern set on the body 23 of the protective lens 20. Different types of protective lenses 20 can be set with target features of different shapes or patterns. By identifying the target feature, it can be determined whether the protective lens 20 is installed in place, or the type of the installed protective lens 20 can be determined. The target feature can be a mark set on the protective lens 20 in the above record. The specific setting when the target feature is a mark can be obtained by referring to the above record, and will not be repeated here.

[0117] In other embodiments, the first image may also be formed by stitching images of two or more lens systems 13, and the target feature may be an image stitching feature. For example, in different installation states of the protective lens 20, the stitched image may have at least one different image stitching feature such as the field of view range and the size of the overlapping area, and the installation state of the protective lens 20 can be determined by identifying the image stitching feature.

[0118] In some embodiments, when the first image is stitched together from images captured by at least two lens systems 13, the differences between different preset modes may also include at least one stitching parameter such as a stitching algorithm, a fusion angle of the stitching algorithm, and an effective area of ​​overlapping images, so that the image stitching can better adapt to the installation state of the protective lens 20 or the type of the protective lens 20, enrich the shooting function of the shooting device 10, and enhance the panoramic shooting effect.

[0119] In some embodiments, the step of acquiring a first image and identifying whether the first image contains a target feature includes:

[0120] After the shooting device 10 is turned on or switched to a shooting mode, a first image is acquired and whether the first image contains a target feature is identified. The shooting mode includes a video recording mode and a photo taking mode. For example, after the shooting device 10 is turned on or switched to a shooting mode, the first image can be automatically acquired and the target feature can be identified, so that the shooting function is entered or switched to a preset mode according to the installation state of the protective lens 20, thereby improving the convenience of using the shooting device 10.

[0121] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0122] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A protective lens, characterized in that: At least one lens system that can be detachably mounted on a photographing device, the protective lens comprising: A seat body, used for detachably connecting with the photographing equipment; The mirror body is arranged on the seat body. After the lens system is installed with the protective mirror, it forms a first optical system with the mirror body. The mirror body is located at the outermost side of the first optical system along the optical axis direction, wherein: The effective field angle of the first optical system is greater than or equal to 183°, and the base is located outside the effective field angle of the first optical system.

2. The protective lens according to claim 1, characterized in that: The lens system without the protective lens formed a second optical system, and the effective field angle of the second optical system is greater than or equal to 183°.

3. The protective lens according to claim 2, characterized in that: An actual viewing angle of the second optical system is not less than an actual viewing angle of the first optical system.

4. The protective lens according to claim 3, characterized in that: The body of the photographing device is located within the actual field of view of the second optical system.

5. The protective lens according to claim 1, characterized in that: The mirror body has refractive power; And / or, the mirror body has a first surface and a second surface, the first surface is located at the outermost side of the mirror body along the optical axis, the second surface is located at the innermost side of the mirror body along the optical axis, the first surface is convex toward the side away from the lens system, and the second surface is concave toward the lens system.

6. The protective lens according to claim 5, characterized in that: The first surface is a spherical surface.

7. The protective lens according to claim 2, characterized in that: The photographing device is provided with a mounting portion and an extension member. When the extension member is connected to the body of the photographing device through the mounting portion, the extension member is at least partially located outside the effective field of view of the first optical system and the second optical system.

8. The protective lens according to claim 7, characterized in that: One end of the extension piece is connected to the photographing device through the mounting portion, and a height of the end of the extension piece connected to the photographing device in the optical axis direction is lower than a height of a body of the photographing device.

9. The protective lens according to claim 7, characterized in that: At least a portion of the extension member is located within the actual field of view of the first optical system and the second optical system.

10. The protective lens according to any one of claims 2 to 4, characterized in that: The protective mirror meets the following requirements: -2mm≤VP≤2mm, Among them, VP is the distance between the first intersection and the second intersection along the optical axis; the first intersection is the intersection of the light path of the actual field of view angle of the second optical system on the optical axis; the second intersection is the intersection of the light path of the actual field of view angle of the first optical system on the optical axis.

11. The protective lens according to any one of claims 1 to 9, characterized in that: The protective mirror meets the following requirements: 3.13mm≤SG2-CT1≤4.08mm, Wherein, the mirror body has a first surface facing away from the lens system and a second surface facing the lens system, SG2 is the vector height of the second surface, and CT1 is the distance from the second surface to the outermost lens of the lens system on the optical axis.

12. The protective lens according to claim 11, characterized in that: The protective mirror meets the following requirements: 0.023≤CGCT / ΦH≤0.075; Wherein, CGCT is the distance from the first surface to the second surface on the optical axis, and ΦH is the radial dimension of the mirror body.

13. The protective lens according to claim 11, characterized in that: The protective mirror meets the following requirements: 0.98≤CGR1 / CGR2≤2.28; Wherein, CGR1 is the curvature radius of the first surface, and CGR2 is the curvature radius of the second surface.

14. The protective lens according to claim 13, characterized in that: The protective mirror meets the following requirements: CGR1 / CGR2≤1.

22.

15. The protective lens according to claim 11, characterized in that: The protective mirror meets the following requirements: 0.5mm≤CT1≤7.5mm.

16. The protective lens according to any one of claims 1 to 9, characterized in that: The protective mirror meets the following requirements: 1.42≤Vd≤1.8; Wherein, Vd is the refractive index of the mirror body.

17. The protective lens according to any one of claims 1 to 9, characterized in that: The protective mirror meets the following requirements: 40≤FA≤100; Wherein, FA is the material abrasion degree of the mirror body.

18. The protective lens according to any one of claims 1 to 9, characterized in that: The light transmittance of the mirror body is greater than or equal to 93%.

19. The protective lens according to any one of claims 1 to 9, characterized in that: There is an interval space between the mirror body and the outermost lens of the lens system, wherein: the mirror body is provided with a first connecting portion, the first connecting portion is used to connect the interval space with the external space; and / or, a second connecting portion is provided between the seat body or between the seat body and the base of the shooting device, the second connecting portion is used to connect the interval space with the external space, and / or, the base of the shooting device is provided with a third connecting portion to communicate with the external space, the third connecting portion is used to connect the interval space; and / or, The surface of the mirror body facing the lens system is provided with an anti-fog layer.

20. The protective lens according to any one of claims 1 to 9, characterized in that: The protective mirror has a mark, and the mark is used for the photographing device to identify the installation state of the protective mirror.

21. The protective lens according to claim 20, characterized in that: The mark is located outside the effective field of view of the first optical system and within the actual field of view of the first optical system.

22. The protective lens according to any one of claims 1 to 9, characterized in that: The mirror body comprises a lens portion and an edge portion which are connected to each other, wherein the lens portion is used to cover the lens system, and the edge portion is detachably connected to the seat body.

23. The protective lens according to claim 22, characterized in that: The lens portion and the edge portion are integrally formed; or, The lens portion is made of glass, and the edge portion is fixedly connected to the lens portion.

24. The protective lens according to claim 22, characterized in that: A plurality of protrusions are provided on the circumferential side of the edge portion, and the plurality of protrusions are arranged in sequence and at intervals along the circumferential direction of the edge portion. The seat body is provided with a plurality of first notches and a plurality of slide grooves connected to the first notches. The first notches correspond one-to-one to the protrusions, and each of the protrusions can enter the slide groove through the first notch.

25. The protective lens according to claim 24, characterized in that: The seat body includes a first main body and a plurality of first cantilevers connected to the inner side of the first main body. The plurality of first cantilevers are arranged in sequence along the circumference of the first main body, and the first notch is formed between two adjacent first cantilevers. The slide groove is formed on a side of the first cantilever facing away from the lens portion, and the protrusion located in the slide groove abuts against the first cantilever.

26. The protective lens according to claim 25, characterized in that: The first body is further provided with a convex portion located in the slide groove, the protrusion is provided with a concave portion corresponding to the convex portion, and the convex portion can be embedded in the concave portion.

27. The protective lens according to claim 24, characterized in that: A lever is also provided on the circumferential side of the edge portion, and the radial dimension of the lever is greater than the radial dimension of the protrusion. When the protrusion is located in the slide groove, the lever abuts against the first body and can slide along the surface of the first body in the circumferential direction of the first body.

28. The protective lens according to claim 22, characterized in that: A plurality of snap-fitting structures are provided on the circumferential side of the edge portion, and the plurality of snap-fitting structures are arranged in sequence and spaced apart along the circumferential direction of the edge portion. A plurality of snap-fitting grooves are provided on the circumferential side of the seat body, and the snap-fitting grooves correspond to the snap-fitting structures one by one, and parts of the snap-fitting structures can be embedded in the snap-fitting grooves.

29. The protective glasses according to claim 28, characterized in that: The snap-fit ​​structure includes a connecting portion connected to the edge portion and a snap-fit ​​portion arranged on the inner side of the connecting portion. A plurality of second notches are arranged on the circumferential side of the seat body. The second notches correspond one-to-one to the positions of the snap-fit ​​grooves. When the snap-fit ​​portion is embedded in the snap-fit ​​groove, the connecting portion is at least partially accommodated in the second notch.

30. The protective glasses according to claim 22, characterized in that: The peripheral side of the edge portion is provided with a mating portion protruding outward, the seat body includes a first main body and a clamping portion protruding inner side of the first main body, the clamping portion has elastic deformation capability, and the mating portion can pass through the clamping portion and abut against the clamping portion on the side of the clamping portion facing away from the lens portion.

31. The protective glasses according to claim 30, characterized in that: The seat body comprises a flexible structure sleeved on the first main body, and a portion of the flexible structure is convex inwardly to form the clamping portion.

32. The protective glasses according to claim 30, characterized in that: The matching portion includes an annular structure extending along the circumference of the edge portion, and the seat body is provided with a plurality of the clamping portions, which are sequentially spaced apart along the circumference of the first main body.

33. A photographing device, characterized in that: It comprises a base, a lens system arranged in the base, and a protective lens as described in any one of claims 1 to 32, wherein the base of the protective lens is detachably connected to the base, and the lens body of the protective lens covers the lens system.

34. The photographing device according to claim 33, characterized in that: The base is provided with a magnetic element, and the magnetic element can be fixed to the base body by magnetic attraction.

35. The photographing device according to claim 34, characterized in that: The base body is made of metal material, and the magnetic element can be attracted to the base body; or, The protective mirror also includes a magnetic attraction fitting part arranged on the seat body, the magnetic attraction fitting part is opposite to the magnetic element, and the magnetic attraction fitting part can be attracted to the magnetic element.

36. The photographing device according to claim 34, characterized in that: The base is provided with an annular accommodating groove, the accommodating groove is arranged around the lens system, the magnetic element is an annular structure, and the magnetic element is accommodated in the accommodating groove.

37. The photographing device according to claim 33, characterized in that: The protective mirror also includes a waterproof structure connected to the seat body, the waterproof structure has a flexible deformation function, and is arranged around the mirror body. When the seat body is connected to the base, the waterproof structure is squeezed by the base to seal the base and the seat body.

38. The photographing device according to claim 37, characterized in that: The base has a matching surface facing the base body, the matching surface is arranged around the lens system, the matching surface is a plane, and the matching surface is opposite to the waterproof structure.

39. The photographing device according to claim 37, characterized in that: The waterproof structure and the seat body are integrally formed by two-color injection molding.

40. The photographing device according to claim 33, characterized in that: The seat body includes a base and a plurality of snap-fit ​​structures arranged at intervals along the circumference of the base, the base includes a frame and a snap-fit ​​structure arranged on the frame, the snap-fit ​​structure is formed with a plurality of rotary grooves and a plurality of snap-fit ​​grooves along the circumferential side, the snap-fit ​​grooves correspond to the positions of the rotary grooves one by one, and the snap-fit ​​structure can slide along the rotary grooves one by one until partially embedded in the snap-fit ​​grooves.

41. The photographing device according to claim 40, characterized in that: The locking fitting structure includes a second main body and a plurality of second cantilevers, wherein the plurality of second cantilevers are connected to the outer side of the second main body and are arranged in sequence along the circumference of the second main body. The second cantilevers, the second main body and the base are jointly arranged to form the rotary groove, and the locking groove is arranged on the outer surface of the second main body at a position corresponding to the end of the rotary groove.

42. The photographing device according to claim 41, characterized in that: A third notch is formed between two adjacent second cantilevers, and the third notch corresponds to the engaging structure one by one, and the engaging structure can enter the rotating groove through the third notch.

43. The photographing device according to claim 41, characterized in that: The snap-fit ​​structure can rotate relative to the base to have a first state and a second state. In the first state, the snap-fit ​​structure can slide along the rotation groove in a one-to-one correspondence, and the snap-fit ​​structure abuts against the side wall of the second body. In the second state, the snap-fit ​​structure is embedded in the slot.

44. The photographing device according to claim 43, characterized in that: The seat body also includes an elastic connecting member, and the engaging structure is rotatably connected to the base through the elastic connecting member. The engaging structure is configured to have an elastic force to switch from the first state to the second state under the driving of the elastic connecting member.

45. The photographing device according to claim 44, characterized in that: The base is provided with a plurality of rotation grooves along the circumference thereof, the elastic connecting member is arranged in the rotation grooves and is substantially perpendicular to the radial direction of the base, and the engaging structure can rotate relative to the base around the axis of the elastic connecting member.

46. ​​The photographing device according to claim 44, characterized in that: In the radial direction of the second body, there is a height difference between a portion of the outer surface of the second body defining the spiral groove and a bottom wall of the clamping groove.

47. The photographing device according to claim 43, characterized in that: A minimum distance between the engaging structure and the optical axis of the lens system in the first state is greater than a minimum distance between the engaging structure and the optical axis in the second state.

48. The photographing device according to claim 41, characterized in that: The engaging structure comprises a first protrusion, and when the engaging structure slides along the rotation groove to the position where the engaging slot is located, the first protrusion is embedded in the engaging slot.

49. The photographing device according to claim 48, characterized in that: The second body is provided with a protrusion located in the rotating groove, and the protrusion and the second body are arranged to form the card slot. The locking structure also includes a second protrusion, and a limiting groove is formed between the first protrusion and the second protrusion. When the first protrusion is embedded in the card slot, the protrusion is embedded in the limiting groove, and the two sides of the protrusion respectively abut the first protrusion and the second protrusion.

50. The photographing device according to claim 49, characterized in that: The surface of the protrusion facing the base and the side wall of the limiting groove are inclined surfaces or arc-shaped surfaces with corresponding shapes.

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