Adapters and mobile devices

Abstract

This disclosure provides an adapter and a mobile device. The adapter includes a first connecting structure and a second connecting structure. The first connecting structure can be assembled and fitted with an external lens so that the access plane of the external lens coincides with a preset end face of the light-collecting channel. The second connecting structure can be assembled and fitted with a mobile terminal so that the distance between the preset end face and the photosensitive plane is equal to the flange distance of the external lens. This structural arrangement, through the first and second connecting structures of the adapter, achieves the positioning connection between the external lens and the mobile terminal, enabling the external lens to achieve the expected shooting function after being installed on the mobile terminal. This allows the mobile terminal to achieve both a slim profile and the desired shooting effect, while also improving the ease of installation of the external lens.

Description

Technical Field

[0001] This disclosure relates to the field of electronic technology, and more specifically to an adapter and a mobile device. Background Technology

[0002] In related technologies, the structural size of the built-in camera module in a mobile terminal is limited by the overall size of the terminal. Considering the overall layout of the mobile terminal, the functionality and image quality of the built-in camera module cannot be improved. If the camera module is too thick, it results in a thicker overall mobile terminal, reducing aesthetics and user experience. Therefore, how to balance the shooting quality of the camera module with the slimness and lightness of the mobile terminal has become a hot research topic in the field. Summary of the Invention

[0003] This disclosure provides an improved adapter and mobile device to achieve a positioning connection between an external lens and a mobile terminal, enabling the mobile terminal to achieve both a slim profile and the desired shooting effect.

[0004] A first aspect of this disclosure provides an adapter for detachably assembling an external lens to a mobile terminal, so that the external lens can be used in conjunction with the image sensor module of the mobile terminal. The adapter includes:

[0005] The main structure forms a light-collecting channel;

[0006] A first connecting structure is disposed on the main structure and located at the first end of the light-collecting channel. The external lens is positioned and installed at the first end through the first connecting structure so that the access plane of the external lens coincides with the preset end face of the first end.

[0007] The second connection structure is disposed on the main structure and located at the second end of the light-collecting channel. The adapter is positioned and installed on the mobile terminal through the second connection structure so that the distance between the preset end face and the photosensitive plane of the image sensor module is equal to the flange distance of the external lens.

[0008] Optionally, the first connecting structure includes at least one limiting boss disposed on the main body structure. The limiting boss includes a guide plane disposed along the circumference of the main body structure and a fastening inclined surface connected to the guide plane. The snap-fit ​​structure of the external lens rotates and slides from the guide plane to the fastening inclined surface and is limited and fixed with the fastening inclined surface.

[0009] Optionally, the limiting boss further includes a stop structure, and the fastening inclined surface includes a first end and a second end disposed opposite to each other, the first end being connected to the guide plane, and the stop structure being disposed at the second end.

[0010] Optionally, the stop structure includes a protrusion formed relative to the fastening ramp.

[0011] Optionally, the second connection structure includes at least one snap-fit ​​groove disposed on the inner wall of the main structure, the snap-fit ​​groove being disposed along the circumference of the main structure;

[0012] The mobile terminal is provided with a card block that matches the card slot structure. When the adapter is assembled to the mobile terminal, the card block is received in the card slot and the card block slides in conjunction with the card slot.

[0013] Optionally, the card slot includes an inlet card slot and a limiting card slot connected to the inlet card slot, wherein the depth of the limiting card slot in the light-collecting channel is greater than the depth of the inlet card slot in the light-collecting channel.

[0014] Optionally, at least a portion of the inlet slots and at least a portion of the limiting slots may overlap in the projection of the light-collecting channel in the depth direction.

[0015] Optionally, the adapter further includes a threaded connector; the main structure is provided with a first threaded hole, the mobile terminal is provided with a second threaded hole corresponding to the position of the first threaded hole, and the threaded connector is fastened to the first threaded hole and the second threaded hole respectively.

[0016] Optionally, the first threaded hole is inclined relative to the depth direction of the light-collecting channel, so that the length of the first threaded hole is greater than the thickness of the main structure.

[0017] Optionally, the main structure is provided with a limiting groove, and the limiting groove is provided with a stop recess. The mobile terminal is provided with a telescopic limiting member corresponding to the position of the limiting groove. During the process of assembling the adapter into the mobile terminal, the telescopic limiting member elastically abuts against the limiting groove and slides along the limiting groove until it is limited and engaged with the stop recess.

[0018] Optionally, the bottom surface of the limiting groove includes an extension surface that is inclined relative to the depth direction of the light-collecting channel.

[0019] Optionally, the telescopic limiting member includes an elastic member and an abutting structure connected to the elastic member; during the process of assembling the adapter to the mobile terminal, the abutting structure elastically abuts against the limiting groove and slides along the limiting groove to engage with the stop recess.

[0020] Optionally, the main structure is provided with a first conductive contact and a second conductive contact, the first conductive contact being electrically connected to the motherboard of the mobile terminal, and the second conductive contact being electrically connected to the external lens.

[0021] Optionally, the main structure has a light-shielding structure on the side facing the mobile terminal, and the light-shielding structure has a light-transmitting opening, which matches the structural shape and size of the photosensitive body of the image sensor module.

[0022] According to a second aspect of this disclosure, a mobile device is provided, the mobile device comprising: an external lens, a mobile terminal, and any of the adapters described in the first aspect;

[0023] The external lens is positioned and installed on the first end through the first connection structure, so that the access plane of the external lens coincides with the preset end face of the first end;

[0024] The mobile terminal includes: a device housing and an image sensor module; the device housing includes a light-transmitting part and an external part, and the device housing has a first assembly space corresponding to the position of the light-transmitting part, and the image sensor module is disposed in the first assembly space;

[0025] The second connection structure is positioned and assembled with the external part so that the photosensitive body of the image sensor module corresponds to the position of the light-collecting channel, and the distance between the preset end face and the photosensitive plane of the image sensor module is equal to the flange distance of the external lens.

[0026] The technical solution provided in this disclosure can achieve at least the following beneficial effects:

[0027] The adapter disclosed herein includes a first connecting structure and a second connecting structure. The first connecting structure can be assembled and fitted with an external lens so that the access plane of the external lens coincides with the preset end face of the light-collecting channel. The second connecting structure can be assembled and fitted with a mobile terminal so that the distance between the preset end face and the photosensitive plane is equal to the flange distance of the external lens. This structural configuration, through the first and second connecting structures of the adapter, achieves a positioning connection between the external lens and the mobile terminal, enabling the external lens to achieve the expected shooting function after being installed on the mobile terminal. This allows the mobile terminal to maintain both its slim profile and the desired shooting effect, while also improving the ease of installation of the external lens.

[0028] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0029] Figure 1 This is one of the structural schematic diagrams of an adapter according to an exemplary embodiment of this disclosure;

[0030] Figure 2 This is a schematic diagram of a three-dimensional assembly structure of a mobile terminal, an adapter, and an external lens according to an exemplary embodiment of this disclosure;

[0031] Figure 3 This is a schematic diagram of the cross-sectional assembly structure of a mobile terminal, adapter and external lens according to an exemplary embodiment of the present disclosure;

[0032] Figure 4 This is a partial cross-sectional structural diagram of an adapter and an external lens in an exemplary embodiment of this disclosure;

[0033] Figure 5 This is a three-dimensional structural diagram of an external lens according to an exemplary embodiment of the present disclosure;

[0034] Figure 6 This is one of the partial structural schematic diagrams of a mobile terminal in an exemplary embodiment of this disclosure;

[0035] Figure 7 This is a second schematic diagram of the structure of an adapter in an exemplary embodiment of this disclosure;

[0036] Figure 8 This is the third schematic diagram of the structure of an adapter in an exemplary embodiment of this disclosure;

[0037] Figure 9 This is a second partial structural schematic diagram of a mobile terminal in an exemplary embodiment of this disclosure;

[0038] Figure 10 This is a partial cross-sectional structural diagram of an adapter and a mobile terminal in an exemplary embodiment of this disclosure;

[0039] Figure 11 This is a partial cross-sectional structural diagram of an adapter and a mobile terminal in accordance with another exemplary embodiment of this disclosure;

[0040] Figure 12 This is a third partial structural schematic diagram of a mobile terminal in an exemplary embodiment of this disclosure;

[0041] Figure 13 This is the fourth schematic diagram of the structure of an adapter in an exemplary embodiment of this disclosure;

[0042] Figure 14 This is the fifth schematic diagram of the structure of an adapter in an exemplary embodiment of this disclosure;

[0043] Figure 15 This is an exploded structural diagram of a mobile terminal, adapter, and external lens according to an exemplary embodiment of the present disclosure. Detailed Implementation

[0044] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure.

[0045] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one, which will be separately stated if referring only to “a.” “A plurality” or “several” means two or more. Unless otherwise indicated, the terms “front,” “rear,” “lower,” and / or “upper,” “top,” “bottom,” and similar terms are for ease of description only and are not limited to a location or spatial orientation. The terms “comprising” or “including,” and similar terms, mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, but do not exclude other elements or objects. The word “connection” or “link” is not limited to physical or mechanical connections, but can also include electrical connections, whether direct or indirect.

[0046] In related technologies, the structural size of the built-in camera module in a mobile terminal is limited by the overall size of the terminal. Considering the overall layout of the mobile terminal, the functionality and image quality of the built-in camera module cannot be improved. If the camera module is too thick, it results in a thicker overall mobile terminal, reducing aesthetics and user experience. Therefore, how to balance the shooting quality of the camera module with the slimness and lightness of the mobile terminal has become a hot research topic in the field.

[0047] This disclosure provides an adapter for detachably assembling an external lens to a mobile terminal, so that the external lens can be used in conjunction with the image sensor module of the mobile terminal. Figure 1 This is a schematic diagram of the structure of an adapter according to an exemplary embodiment of this disclosure; Figure 2 This is a schematic diagram of a three-dimensional assembly structure of a mobile terminal, an adapter, and an external lens according to an exemplary embodiment of this disclosure; Figure 3 This is a schematic diagram of the cross-sectional assembly structure of a mobile terminal, adapter, and external lens according to an exemplary embodiment of this disclosure. Figures 1-3As shown, the adapter 1 includes a main structure 11, a first connecting structure 112, and a second connecting structure 113. The main structure 11 forms a light-collecting channel 111. The first connecting structure 112 is disposed on the main structure 11 and located at the first end of the light-collecting channel 111. The external lens 3 is positioned and installed at the first end through the first connecting structure 112, so that the access plane 32 of the external lens 3 coincides with the preset end face 1111 of the first end. The second connecting structure 113 is disposed on the main structure 11 and located at the second end of the light-collecting channel 111. The adapter 1 is positioned and installed to the mobile terminal 2 through the second connecting structure 113, so that the distance d between the preset end face 1111 and the photosensitive plane 23 of the image sensor module 22 is equal to the flange distance D of the external lens 3.

[0048] Since the adapter 1 includes a first connecting structure 112 and a second connecting structure 113, the first connecting structure 112 can be assembled with the external lens 3 so that the access plane 32 of the external lens 3 coincides with the preset end face 1111 of the light-collecting channel 111, and the second connecting structure 113 can be assembled with the mobile terminal 2 so that the distance d between the preset end face 1111 and the photosensitive plane 23 is equal to the flange distance D of the external lens 3. The above structural configuration realizes the positioning connection between the external lens 3 and the mobile terminal 2 through the first connecting structure 112 and the second connecting structure 113 of the adapter 1, so that the external lens 3 can achieve the expected shooting function after being installed on the mobile terminal 2, making the mobile terminal 2 both thin and light and achieving the expected shooting effect, and also improving the installation convenience of the external lens 3.

[0049] In some embodiments, such as Figure 1 , Figure 4 , Figure 5 As shown, the first connecting structure 112 includes at least one limiting boss disposed on the main structure 11. The limiting boss includes a guide plane 1121 disposed along the circumference of the main structure 11 and a fastening inclined surface 1122 connected to the guide plane 1121. The snap-fit ​​structure 31 of the external lens 3 rotates and slides from the guide plane 1121 to the fastening inclined surface 1122 and is limited and fixed with the fastening inclined surface 1122.

[0050] The adapter 1 and the external lens 3 can be assembled by relative rotation. During the rotational assembly process, the snap-fit ​​structure 31 of the external lens 3 can rotate and slide from the guide plane 1121 to the fastening inclined surface 1122, and be fixed with the fastening inclined surface 1122 by abutment and limiting. The guide plane 1121 can provide an guiding function for the external lens 3, so as to facilitate the smooth insertion of the external lens 3. The fastening inclined surface 1122 can gradually achieve abutment with the snap-fit ​​structure 31 by its own inclined structure, thereby making the external lens 3 snap-fitted and fixed with the adapter 1.

[0051] In the above embodiments, the limiting boss may further include a stop structure 1123, and the fastening inclined surface 1122 includes a first end and a second end disposed opposite to each other. The first end is connected to the guide plane 1121, and the stop structure 1123 is disposed at the second end. That is, a stop structure 1123 is provided at the end of the fastening inclined surface 1122 to prevent the locking structure 31 of the external lens 3 from sliding out along the fastening inclined surface 1122.

[0052] The stop structure 1123 may include a protrusion formed relative to the fastening inclined surface 1122, so as to stop the external lens 3 mounting structure 31 by utilizing the bending surface formed by the protrusion relative to the fastening inclined surface 1122. In other embodiments, the stop structure 1123 may also be an extended inclined surface connected to the fastening inclined surface 1122, and the tilt angle of the extended inclined surface prevents the external structure of the external lens 3 from sliding further, thereby forming a stop effect.

[0053] It should be noted that the latching mechanism of the external lens 3 can be a latching hook set on the external lens 3. The latching hook is fastened to the limiting boss and cooperates with the guide plane 1121, the fastening inclined surface 1122 and the stop structure 1123 formed by the upper surface of the limiting boss.

[0054] In some embodiments, such as Figure 1 , Figure 6 As shown, the second connecting structure 113 may include at least one snap-fit ​​groove disposed on the inner wall of the main structure 11, the snap-fit ​​groove being disposed circumferentially along the main structure 11. One end of the snap-fit ​​groove may be provided with a rotation stop end face 1134, and the mobile terminal 2 is provided with a snap block 211 matching the structure of the snap-fit ​​groove. When the adapter 1 is assembled to the mobile terminal 2, the snap block 211 is received in the snap-fit ​​groove, and the snap block 211 slides in cooperation with the snap-fit ​​groove. The snap block 211 can slide relative to the snap-fit ​​groove to the rotation stop end face 1134 to complete the limiting fixation. The sliding cooperation between the snap block 211 and the snap-fit ​​groove improves the connection convenience between the adapter 1 and the mobile terminal 2. When assembling the adapter 1 and the mobile terminal 2, the snap block 211 can be directly aligned with the snap-fit ​​groove and screwed in.

[0055] It should be noted that setting the card block 211 structure on the mobile terminal 2 helps to simplify the structural improvement of the mobile terminal 2 and reduce the cost of structural improvement.

[0056] In the above embodiments, such as Figure 7As shown, the snap-fit ​​slot may include an inlet slot 1131 and a limiting slot 1132 connected to the inlet slot 1131. The depth of the limiting slot 1132 within the light-collecting channel 111 is greater than the depth of the inlet slot 1131 within the light-collecting channel 111. The card block 211 can be inserted into the snap-fit ​​slot through the inlet slot 1131, and the snap-fit ​​is fixed when the card block 211 slides into the limiting slot 1132, improving the smoothness and stability of the connection between the adapter 1 and the mobile terminal 2.

[0057] In the above embodiments, at least a portion of the input card slot 1131 and at least a portion of the limiting card slot 1132 are projected in the depth direction of the light-collecting channel 111, so that sliding from the input card slot 1131 into the limiting card slot 1132 only requires moving in the depth direction of the light-collecting channel 111 in the area where the projections overlap, thereby improving the convenience and smoothness of operation.

[0058] In some embodiments, the end of the guide slot 1131 away from the limiting slot 1132 may be provided with a slot inlet 1133. The width of the slot inlet 1133 in the depth direction of the light-collecting channel 111 should be greater than or equal to the width of the guide slot 1131 so as to facilitate the sliding of the card block 211.

[0059] In other embodiments, such as Figures 8-11 As shown, the adapter 1 may also include a threaded connector 12. The main structure 11 has a first threaded hole 114, and the mobile terminal 2 is disposed in a second threaded hole 212 corresponding to the position of the first threaded hole 114. The threaded connector 12 is fastened to the first threaded hole 114 and the second threaded hole 212 respectively. The connection convenience and reliability are improved by fixing the adapter 1 and the mobile terminal 2 with the threaded connector 12.

[0060] When the mobile terminal 2 card block 211 slides into the card slot, it achieves the limiting in the depth direction of the light-collecting channel 111. Then, through the cooperation of the threaded connector 12 with the mobile terminal 2 and the adapter 1 respectively, the circumferential limiting of the adapter 1 can be achieved, thereby completing the fixed connection between the adapter 1 and the mobile terminal 2.

[0061] In the above embodiment, the first threaded hole 114 can be inclined relative to the depth direction of the light-transmitting channel 111, so that the length of the first threaded hole 114 is greater than the thickness of the main structure. The inclined first threaded hole 114 increases the depth of the threaded hole, thus enhancing the connection reliability during the connection process.

[0062] The second threaded hole 212, which mates with the first threaded hole 114, can also be tilted relative to the depth direction of the light-collecting channel 111, so that the depth of the second threaded hole 212 in the mobile terminal 2 is also increased, further improving the connection reliability.

[0063] In some other embodiments, such as Figure 1 , Figure 12 As shown, the main structure 11 may be provided with a limiting groove 115, and a stop recess 1151 is provided in the limiting groove 115. The mobile terminal 2 is provided with a telescopic limiting member 213 corresponding to the position of the limiting groove 115. During the assembly of the adapter 1 to the mobile terminal 2, the telescopic limiting member 213 elastically abuts against the limiting groove 115 and slides along the limiting groove 115 until it is limited and engaged with the stop recess 1151. Through the abutment and sliding of the telescopic limiting member 213 against the limiting groove 115, the telescopic limiting member 213 slides into the stop recess 1151 to limit the position of the adapter 1 and the mobile terminal 2, improving the smoothness of sliding and the feel of operation. Furthermore, the friction between the telescopic limiting member 213 and the stop recess 1151 or the limiting groove 115 further prevents the telescopic limiting member 213 from disengaging.

[0064] When it is necessary to remove the adapter 1, a force in the opposite direction can be applied to the adapter 1 to overcome the friction between the telescopic limiting member 213, the stop recess 1151, and the limiting slide groove 115, and the adapter 1 can be unscrewed.

[0065] In the above embodiment, the bottom surface of the limiting slide 115 includes an extension surface that is inclined relative to the depth direction of the light-transmitting channel 111. The inclined extension surface provides guidance for the sliding in and out of the telescopic limiting member 213, so that the movement of the telescopic limiting member 213 is smooth.

[0066] The telescopic limiting member 213 may include an elastic member and an abutting structure connected to the elastic member. During the process of assembling the adapter 1 to the mobile terminal 2, the abutting structure elastically abuts against the limiting slide groove 115 and slides along the limiting slide groove 115 to limit and cooperate with the stop recess 1151, so as to obtain the limiting effect by utilizing the compression and reset performance of the elastic member and improving the operating feel.

[0067] In some embodiments, such as Figure 13 As shown, the main structure 11 may be provided with a first conductive contact and a second conductive contact 116. The first conductive contact is electrically connected to the motherboard of the mobile terminal 2, and the second conductive contact 116 is electrically connected to the external lens 3. The external lens 3 may include functions such as autofocus and image stabilization. When the mobile terminal 2 and the external lens 3 are electrically connected via the adapter 1, they can transmit control signals or feedback signals to each other to utilize the autofocus and image stabilization functions of the external lens 3 to achieve focusing and image stabilization, thereby improving the focusing and image stabilization effect of the mobile terminal 2.

[0068] In some embodiments, such as Figure 14As shown, the main structure 11 has a light-shielding structure 117 on the side facing the mobile terminal 2. The light-shielding structure 117 has a light-transmitting opening 1171, which matches the shape and size of the photosensitive body of the image sensor module 22. The light-transmitting opening 1171 of the adapter 1 allows light passing through the external lens 3 to propagate to the photosensitive body of the image sensor module 22. The matching shape and size of the light-transmitting opening 1171 with the photosensitive body can prevent external stray light from entering the image sensor module 22 and affecting the imaging effect. For example, when the photosensitive body is rectangular, the light-transmitting opening 1171 can be a rectangle that matches the photosensitive body, so that after the external lens 3 is assembled into the mobile terminal 2, the photosensitive body can obtain better lighting and imaging effects.

[0069] This disclosure further provides a mobile device 4, such as Figure 2 , Figure 15 As shown, the mobile device 4 includes an external lens 3, a mobile terminal 2, and the aforementioned adapter 1. The external lens 3 is positioned and installed to the first end via a first connecting structure 112, so that the access plane 32 of the external lens 3 coincides with the preset end face 1111 of the first end. The mobile terminal 2 includes a device housing 21 and an image sensor module 22. The device housing 21 includes a light-transmitting part 214 and an external part 216. A first assembly space 215 corresponding to the position of the light-transmitting part 214 is provided inside the device housing 21, and the image sensor module 22 is disposed in the first assembly space 215. The second connecting structure 113 is positioned and assembled with the external part 216, so that the photosensitive body of the image sensor module 22 corresponds to the position of the light-collecting channel 111. The distance d between the preset end face 1111 and the photosensitive plane 23 of the image sensor module 22 is equal to the flange distance D of the external lens 3.

[0070] It should be noted that the aforementioned external part 216 may be the aforementioned structure such as the locking block 211, the second threaded hole 212, and the telescopic limiting member 213 provided on the equipment housing 21.

[0071] The adapter 1 enables the external lens 3 to be mounted on the mobile terminal 2 with a matching flange distance D, thereby realizing the shooting function of the external lens 3. This can be achieved by providing the adapter 1 with multiple second connection structures 113 that match the flange distance D of different external lenses 3, allowing external lenses 3 with different flange distances D to be mounted on the mobile terminal 2 and to focus normally. Alternatively, each external lens 3 can be equipped with a corresponding adapter 1, so that the second connection structure 113 of each adapter 1, after being positioned and connected to the external lens 3, obtains a flange distance D matching that external lens 3.

[0072] Since the adapter 1 includes a first connecting structure 112 and a second connecting structure 113, the first connecting structure 112 can be assembled with the external lens 3 so that the access plane 32 of the external lens 3 coincides with the preset end face 1111 of the light-collecting channel 111, and the second connecting structure 113 can be assembled with the mobile terminal 2 so that the distance d between the preset end face 1111 and the photosensitive plane 23 is equal to the flange distance D of the external lens 3. The above structural configuration realizes the positioning connection between the external lens 3 and the mobile terminal 2 through the first connecting structure 112 and the second connecting structure 113 of the adapter 1, so that the external lens 3 can achieve the expected shooting function after being installed on the mobile terminal 2, making the mobile terminal 2 both thin and light and achieving the expected shooting effect, and also improving the installation convenience of the external lens 3.

[0073] Because the external lens 3 component no longer occupies internal space in the mobile device 4, the motherboard of the mobile terminal 2 is no longer limited by the lens size, thus allowing for a larger board area, improving heat dissipation and signal transmission integrity. Furthermore, the internal space saved by externalizing the lens can be used to increase battery capacity and extend the battery life of the mobile terminal 2.

[0074] In this design, the distance between the photosensitive element of the image sensor module 22 and the light-transmitting part 214 of the device housing 21 is relatively small, less than or equal to 10 millimeters. This allows it to be compatible with almost all commonly used lenses on the market, enabling photography enthusiasts to use a single mobile terminal 2 to adapt to various lenses and enhance their photography experience. Traditional lenses can also regain their functionality with the aforementioned mobile terminal 2, and the mobile terminal 2 itself can also serve as a professional photography tool in addition to its communication functions, thus possessing greater value.

[0075] It should be noted that the mobile terminal 2 can be a mobile phone, tablet computer, wearable device, etc., and this disclosure does not limit it. Taking a mobile phone as an example, the mobile phone has a high computing power platform, high-efficiency and high-quality image algorithms, and convenient editing and sharing functions. After the light is collected by the external lens 3 component and the image sensor module 22 forms an image, the image can be directly processed, edited, and shared using the mobile phone, thus obtaining a convenient imaging system. This avoids the process of transferring the image for processing, editing, and sharing that is required when using a high-quality camera alone.

[0076] For example, in scenarios such as traveling, professional photography, and interview recording, in addition to carrying the camera lens used daily, there is no need to carry the bulky camera body. Simply attach the camera lens to the mobile terminal 2 and it is ready to use. It can be detached after use, which improves portability and ease of use.

[0077] Since the selection of the external lens 3 component is no longer limited by the assembly space of the mobile terminal 2, the external lens 3 can be matched to the imaging size of the image sensor module 22 to the greatest extent, improving many performance aspects such as aperture, light intake, and resolution. For example, when shooting in low-light scenes such as at night, in dark rooms, caves, and tunnels, a large-aperture external lens 3 can be selected, combined with the exposure and fusion algorithms of the mobile terminal 2, to obtain better low-light scene photos and improve the user experience.

[0078] For example, photography enthusiasts can connect external lenses from DSLR, mirrorless, or film cameras, such as telephoto portrait lenses, ultra-wide-angle landscape lenses, large-aperture lenses, and cinema lenses, depending on the shooting scene and needs. These external lenses 3, combined with the image sensor module 22 built into the mobile terminal 2, enable functions such as taking photos and recording videos, improving the quality of images and videos. Furthermore, the mobile terminal 2 can also connect to older lenses collected by photography enthusiasts whose image field of view is difficult to match with the camera body, enhancing the practicality of these older lenses.

[0079] Because the image sensor module 22 of the mobile terminal 2 is smaller than that of a traditional camera image sensor, the mobile terminal 2 needs to perform equivalent conversion on the focal length when adapting to external lenses 3 of different specifications. For example, the image sensor module 22 of the mobile terminal 2 is 1 inch in size. The ratio of the diagonal length of the image sensor of a full-frame camera to that of the image sensor module 22 of the mobile terminal 2 in this disclosure is 43.27 / 16 = 2.7. 2.7 is the focal length conversion factor for the external lens 3 of the full-frame camera. Using a 50mm focal length external lens 3 of a full-frame camera, the equivalent focal length is 50mm * 2.7 = 135mm. Similarly, when adapting to an APS-C format camera lens, the focal length conversion factor is 28.3 / 16 = 1.77. When adapting to a 4 / 3-inch camera lens, the focal length conversion factor is 22.4 / 16 = 1.4. Based on the above focal length conversion factors, the corresponding external lens 3 can be selected according to the shooting scenario.

[0080] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. An adapter, characterized in that, The adapter is used to detachably assemble an external lens to a mobile terminal so that the external lens can be used in conjunction with the image sensor module of the mobile terminal. The adapter includes: The main structure forms a light-collecting channel; A first connecting structure is disposed on the main structure and located at the first end of the light-collecting channel. The external lens is positioned and installed at the first end through the first connecting structure so that the access plane of the external lens coincides with the preset end face of the first end. The second connection structure is disposed on the main structure and located at the second end of the light-collecting channel. The adapter is positioned and installed on the mobile terminal through the second connection structure so that the distance between the preset end face and the photosensitive plane of the image sensor module is equal to the flange distance of the external lens. The second connection structure includes at least one snap-fit ​​groove disposed on the inner wall of the main structure, the snap-fit ​​groove being disposed along the circumference of the main structure; the mobile terminal is provided with a snap-fit ​​block matching the snap-fit ​​groove structure, when the adapter is assembled to the mobile terminal, the snap-fit ​​block is received in the snap-fit ​​groove, and the snap-fit ​​block and the snap-fit ​​groove are slidably engaged.

2. The adapter according to claim 1, characterized in that, The first connecting structure includes at least one limiting boss disposed on the main body structure. The limiting boss includes a guide plane disposed along the circumference of the main body structure and a fastening inclined surface connected to the guide plane. The snap-fit ​​structure of the external lens rotates and slides from the guide plane to the fastening inclined surface and is limited and fixed with the fastening inclined surface.

3. The adapter according to claim 2, characterized in that, The limiting boss also includes a stop structure, and the fastening inclined surface includes a first end and a second end that are disposed opposite to each other. The first end is connected to the guide plane, and the stop structure is disposed at the second end.

4. The adapter according to claim 3, characterized in that, The stop structure includes a protrusion structure formed relative to the fastening ramp.

5. The adapter according to claim 1, characterized in that, The card slot includes an inlet card slot and a limiting card slot connected to the inlet card slot. The depth of the limiting card slot in the light-collecting channel is greater than the depth of the inlet card slot in the light-collecting channel.

6. The adapter according to claim 5, characterized in that, At least a portion of the inlet slot and at least a portion of the limiting slot overlap in the projection of the light-collecting channel in the depth direction.

7. The adapter according to claim 1, characterized in that, It also includes threaded connectors; the main structure is provided with a first threaded hole, the mobile terminal is provided with a second threaded hole corresponding to the position of the first threaded hole, and the threaded connectors are respectively fastened to the first threaded hole and the second threaded hole.

8. The adapter according to claim 7, characterized in that, The first threaded hole is inclined relative to the depth direction of the light-collecting channel, so that the length of the first threaded hole is greater than the thickness of the main structure.

9. The adapter according to claim 1, characterized in that, The main structure is provided with a limiting groove, and a stop recess is provided in the limiting groove. The mobile terminal is provided with a telescopic limiting member corresponding to the position of the limiting groove. During the process of assembling the adapter into the mobile terminal, the telescopic limiting member elastically abuts against the limiting groove and slides along the limiting groove until it is limited and engaged with the stop recess.

10. The adapter according to claim 9, characterized in that, The bottom surface of the limiting slide includes an extension surface that is inclined relative to the depth direction of the light-collecting channel.

11. The adapter according to claim 9, characterized in that, The telescopic limiting component includes an elastic element and an abutting structure connected to the elastic element; during the process of assembling the adapter to the mobile terminal, the abutting structure elastically abuts against the limiting groove and slides along the limiting groove to engage with the stop recess.

12. The adapter according to claim 1, characterized in that, The main structure is provided with a first conductive contact and a second conductive contact. The first conductive contact is electrically connected to the motherboard of the mobile terminal, and the second conductive contact is electrically connected to the external lens.

13. The adapter according to claim 1, characterized in that, The main structure has a light-shielding structure on the side facing the mobile terminal, and the light-shielding structure has a light-transmitting opening. The light-transmitting opening matches the structural shape and size of the photosensitive body of the image sensor module.

14. A mobile device, characterized in that, include: External lens, mobile terminal, and adapter as described in any one of claims 1 to 13; The external lens is positioned and installed on the first end through the first connection structure, so that the access plane of the external lens coincides with the preset end face of the first end; The mobile terminal includes: a device housing and an image sensor module; The device housing includes a light-transmitting part and an external part. The device housing has a first assembly space corresponding to the position of the light-transmitting part. The image sensor module is disposed in the first assembly space. The second connection structure is positioned and assembled with the external part so that the photosensitive body of the image sensor module corresponds to the position of the light-collecting channel, and the distance between the preset end face and the photosensitive plane of the image sensor module is equal to the flange distance of the external lens.

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