Electronic device and control method thereof

Abstract

The invention discloses electronic equipment, and belongs to the technical field of electronic equipment.The electronic equipment comprises a shell, a photosensitive chip, a first lens module and a second lens module, the shell is provided with a light inlet hole, and the photosensitive chip and the first lens module are both installed in the shell; the photosensitive chip and the light inlet hole both face the first lens module, and the equivalent focal length Fs of the first lens module is 69-135 mm; the second lens module comprises a lens barrel and a plurality of lenses, the plurality of lenses are fixedly installed on the lens barrel, the second lens module is an afocal system, and the second lens module is detachably fixed on the outer side of the light inlet hole in the shell; the relation between the equivalent focal length F of an optical system formed by the first lens module and the second lens module and the equivalent focal length Fs of the first lens module meets the condition that F / Fs is larger than or equal to 2 and smaller than or equal to 3.

Description

Technical Field

[0001] This application belongs to the technical field of electronic devices, and particularly relates to an electronic device and a control method thereof. Background Art

[0002] Electronic devices such as mobile phones have brought a lot of convenience to users' lives and work, and users' requirements for the shooting performance of electronic devices are also getting higher and higher. Taking the telephoto lens as an example, it can provide a longer shooting distance and is favored by the majority of users. However, limited by the spatial size of the electronic device, the equivalent focal length of the built-in telephoto lens in the electronic device is still relatively small. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide an electronic device and a control method thereof to solve the problem that the equivalent focal length of the current electronic device is still relatively small due to its limited spatial size.

[0004] In a first aspect, the embodiments of this application disclose an electronic device, which includes a housing, a photosensitive chip, a first lens module, and a second lens module. Among them, The housing is provided with a light inlet hole. The photosensitive chip and the first lens module are both installed in the housing. The photosensitive chip and the light inlet hole both face the first lens module, and the equivalent focal length Fs of the first lens module is 69 mm to 135 mm; The second lens module includes a lens barrel and a plurality of lenses. The plurality of lenses are all fixedly installed in the lens barrel. The second lens module is a afocal system, and the second lens module is detachably fixed outside the light inlet hole in the housing; The relationship between the equivalent focal length F of the optical system composed of the first lens module and the second lens module and the equivalent focal length Fs of the first lens module satisfies: 2 ≤ F / Fs ≤ 3.

[0005] In a second aspect, the embodiments of this application disclose a control method, which is applied to the above-mentioned electronic device. The control method includes: When the second lens module is not assembled outside the housing, output the image on the photosensitive chip to the display module of the electronic device; When the second lens module is assembled outside the housing, control the image on the photosensitive chip to rotate 180°, and output it to the display module of the electronic device.

[0006] Embodiments of the present application disclose an electronic device. Its photosensitive chip and the first lens module are both installed in the housing, and the photosensitive chip and the light incident hole on the housing both face the first lens module, so that light outside the housing can enter the electronic device through the light incident hole, and is distributed by the first lens module, and finally enters the photosensitive chip and forms a corresponding image. That is, in the embodiments of the present application, the first lens module can independently provide a light distribution function and cooperate with the photosensitive chip to complete the imaging work. At the same time, in the embodiments of the present application, the electronic device further includes a second lens module. Its multiple lenses are all fixedly installed in the lens barrel, and the second lens module has the ability to be detachably and fixedly connected to the outside of the light incident hole in the housing, so that the second lens module can cooperate with the first lens module to provide a light distribution function for the incident light, and make the light form a corresponding image on the photosensitive chip.

[0007] In the embodiments of the present application, the second lens module is a non-focusing long-distance vision system. Thus, when the second lens module is installed on the housing, the entire electronic device can also complete the focusing process of the entire optical system (i.e., the first lens module and the second lens module) only by relying on the focusing means for the first lens module. This can reduce the focusing difficulty of the first lens module when used in combination with the second lens module and improve the shooting effect.

[0008] Moreover, in the embodiments of the present application, the equivalent focal length Fs of the first lens module is 69 mm to 135 mm, the focal length of the optical system composed of the first lens module and the second lens module is F, and the relationship between F and Fs satisfies: 2 ≤ F / Fs ≤ 3. This enables the equivalent focal length of the entire optical system in the electronic device to reach more than 200 mm, thereby ensuring that the long-focus shooting ability of the electronic device is relatively strong.

[0009] At the same time, in the embodiments of the present application, since the magnification of the second lens module is still relatively small, the image resolution of the electronic device can be improved, the shooting clarity can be enhanced, the degree of purple fringing effect can be reduced, and the black edge size of the image can also be reduced. In addition, when the first lens module has an optical image stabilization function, since the magnification of the second lens module in the electronic device disclosed in the embodiments of the present application is relatively small, when the first lens module is used in combination with the second lens module, the anti-shake angle of the first lens module will not be severely attenuated, and thus the handheld shooting effect of the electronic device can still be relatively good. Description of the Drawings

[0010] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings: Figure 1 It is a schematic diagram of some structures in the electronic device disclosed in the embodiments of the present application; Figure 2 Another schematic diagram of part of the structure in the electronic device disclosed in the embodiment of the present application; Figure 3 Another schematic diagram of part of the structure in the electronic device disclosed in the embodiment of the present application; Figure 4 Flow chart of the control method of the electronic device disclosed in the embodiment of the present application; Figure 5 is Figure 1 Schematic diagram of the defocus curve of the optical system shown; Figure 6 is Figure 1 Schematic diagram of the axial chromatic aberration of the optical system shown; Figure 7 is Figure 1 Schematic diagram of the optical distortion of the optical system shown; Figure 8 is Figure 2 Schematic diagram of the defocus curve of the optical system shown; Figure 9 is Figure 2 Schematic diagram of the axial chromatic aberration of the optical system shown; Figure 10 is Figure 2 Schematic diagram of the optical distortion of the optical system shown; Figure 11 is Figure 3 Schematic diagram of the defocus curve of the optical system shown; Figure 12 is Figure 3 Schematic diagram of the axial chromatic aberration of the optical system shown; Figure 13 is Figure 3 Schematic diagram of the optical distortion of the optical system shown.

[0011] Reference numerals: 100 - photosensitive chip, 200 - first lens module, 300 - second lens module, 310 - lens barrel, 320 - first lens group, 321 - first lens, 322 - second lens, 323 - third lens, 324 - fourth lens, 325 - fifth lens, 330 - second lens group, 331 - sixth lens, 332 - seventh lens, 333 - eighth lens, 334 - ninth lens, 335 - tenth lens, 336 - eleventh lens, 337 - twelfth lens, 338 - thirteenth lens. Detailed implementation manners

[0012] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0013] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0014] As Figures 1 - 3 shown, an embodiment of the present application discloses an electronic device, which can specifically be a mobile phone. Among them, the electronic device includes a housing, a photosensitive chip 100, a first lens module 200, and a second lens module 300. Of course, the electronic device usually may also include other components such as a display module, a battery, and a speaker.

[0015] The housing can serve as the installation basis for other components in the electronic device. The housing can include a frame and a rear cover, and the rear cover and the display module can be respectively installed on opposite sides of the housing. The three are used to enclose the external structure of the electronic device. Components such as the battery and the photosensitive chip 100 can be installed inside the housing. Of course, components such as the first lens module 200 and the speaker can be partially exposed outside the housing to ensure the normal operation of each component.

[0016] Specifically, the housing is provided with a light inlet hole, which is used to allow light outside the electronic device to enter the electronic device. The shape and size of the light inlet hole can be designed according to parameters such as the external structure of the first lens module 200. At the same time, during the assembly process of the electronic device, both the photosensitive chip 100 and the first lens module 200 are installed in the housing. Specifically, the photosensitive chip 100 can be located inside the housing, and the first lens module 200 can be entirely located inside the housing, or at least a part of the first lens module 200 can be located outside the housing to save the internal space of the electronic device. Of course, there is an inseparable fixed connection relationship between the first lens module 200 and the housing. In other words, in the electronic device disclosed in the embodiments of the present application, the first lens module 200 is an internal structure of the electronic device, and the two cannot be disassembled.

[0017] Meanwhile, the photosensitive chip 100 and the light incident hole both face the first lens module 200, so as to ensure that the light entering the electronic device through the light incident hole can enter the first lens module 200. After the light is distributed by the optical lens in the first lens module 200, the light can exit from the first lens module 200 and be received by the photosensitive chip 100, thereby forming a corresponding optical image.

[0018] As described above, the electronic device disclosed in the embodiment of the present application further includes a second lens module 300, and the second lens module 300 includes a lens barrel 310 and a plurality of lenses, and the plurality of lenses are all fixedly installed in the lens barrel 310. That is to say, in the electronic device disclosed in the embodiment of the present application, the relative positional relationship between the lenses in the second lens module 300 cannot be changed. In other words, the second lens module 300 is a fixed-focus module. More specifically, in the embodiment of the present application, the second lens module 300 is a afocal system, that is, the equivalent focal length of the second lens module 300 itself is infinite.

[0019] Meanwhile, the second lens module 300 is detachably fixed outside the light incident hole in the housing. That is to say, the electronic device disclosed in the embodiment of the present application has two working modes. One is that the second lens module 300 is separated from the housing, and the electronic device only uses the first lens module 200 to distribute the light and form a corresponding image. The other is that the second lens module 300 is installed on the housing, so that the electronic device can use the first lens module 200 and the second lens module 300 together to distribute the light and form a corresponding image.

[0020] Specifically, the second lens module 300 can be installed on the housing by connecting with the housing or the first lens module 200. More specifically, magnets can be respectively arranged on the lens barrel 310 of the second lens module 300 and the housing, so that the two can form a detachable fixed connection relationship through magnetic attraction cooperation. In other words, in the embodiment of the present application, the second lens module 300 belongs to an external structure, and the second lens module 300 can be flexibly disassembled from the housing or assembled on the housing according to the needs of the user.

[0021] In the embodiment of the present application, the equivalent focal length of the first lens module 200 is Fs, and the equivalent focal length of the optical system composed of the first lens module 200 and the second lens module 300 is F. In order to improve the telephoto shooting ability of the electronic device, the relationship between the equivalent focal length F of the foregoing optical system and the equivalent focal length Fs of the first lens module 200 can be made to satisfy: 2 ≤ F / Fs ≤ 3. In this case, the second lens module 300 can provide a magnification of 2 to 3 times for the first lens module 200, thereby increasing the equivalent focal length of the electronic device.

[0022] Based on the electronic device disclosed in the above embodiments of the present application, the first lens module 200 can be a conventional main camera lens module. That is, the equivalent focal length of the first lens module 200 can be between 23 mm and 27 mm. In this case, even when working in cooperation with the second lens module 300, the equivalent focal length of the optical system composed of the first lens module 200 and the second lens module 300 in the electronic device is still relatively small. Therefore, in the embodiments of the present application, the equivalent focal length Fs of the first lens module 200 can be 69 mm to 135 mm. That is, in the embodiments of the present application, the first lens module 200 has a magnification of 3 to 5 times. In this case, the equivalent focal length of the optical system composed of the first lens module 200 and the second lens module 300 in the electronic device can reach more than 200 mm, thereby greatly improving the telephoto shooting ability of the electronic device.

[0023] In addition, in the embodiments of the present application, since the magnification of the second lens module 300 is not made too large, it is also possible to prevent the resolution of the optical system of the electronic device (i.e., the combined system of the first lens module 200 and the second lens module 300) from decreasing too much, and it is possible to prevent the black edges of the captured image from being relatively large, resulting in a problem of pixel loss. Moreover, when the first lens module 200 has the ability of optical image stabilization, it is also possible to prevent the image stabilization ability of the electronic device from dropping sharply after forming an optical system with the second lens module 300, ensuring that the effect of handheld shooting is still relatively good. At the same time, in the embodiments of the present application, the second lens module 300 of the electronic device is a fixed-focus structure. Furthermore, when shooting with the first lens module 200 and the second lens module 300, only the autofocus function of the electronic device itself needs to be used for focusing, and there is no need to repeatedly adjust the focal lengths of the first lens module 200 and the second lens module 300 respectively. Therefore, the focusing logic can be simplified, the shooting difficulty can be reduced, and the clarity of the image can be improved to a certain extent.

[0024] An embodiment of the present application discloses an electronic device. Its photosensitive chip 100 and the first lens module 200 are both installed in the housing, and the photosensitive chip 100 and the light incident hole on the housing both face the first lens module 200, so that the light outside the housing can enter the electronic device through the light incident hole, and is distributed by the first lens module 200, and finally enters the photosensitive chip 100 and forms a corresponding image. That is to say, in the embodiment of the present application, the first lens module 200 can independently provide a light distribution function and cooperate with the photosensitive chip 100 to complete the imaging work. At the same time, in the embodiment of the present application, the electronic device further includes a second lens module 300. Its multiple lenses are all fixedly installed in the lens barrel 310, and the second lens module 300 has the ability to be detachably and fixedly connected to the outside of the light incident hole in the housing, so that the second lens module 300 can cooperate with the first lens module 200 to provide a light distribution function for the incident light, and make the light form a corresponding image on the photosensitive chip 100.

[0025] In the embodiment of the present application, the second lens module 300 is a afocal long-distance viewing system. When the second lens module 300 is installed on the housing, the entire electronic device can also complete the focusing process of the entire optical system (that is, the first lens module 200 and the second lens module 300) only by relying on the focusing means for the first lens module 200. This can reduce the focusing difficulty of the first lens module 200 when used with the second lens module 300 and improve the shooting effect.

[0026] Moreover, in the embodiment of the present application, the equivalent focal length Fs of the first lens module 200 is 69 mm to 135 mm. The focal length of the optical system composed of the first lens module 200 and the second lens module 300 is F, and the relationship between F and Fs satisfies: 2 ≤ F / Fs ≤ 3. This enables the equivalent focal length of the entire optical system in the electronic device to reach more than 200 mm, so as to ensure that the telephoto shooting ability of the electronic device is relatively strong.

[0027] At the same time, in the embodiment of the present application, since the magnification of the second lens module 300 is still relatively small, the image resolution of the electronic device can be improved, the shooting clarity can be improved, the degree of purple fringing can be reduced, and the black edge size of the image can also be reduced. In addition, when the first lens module 200 has an optical image stabilization function, since the magnification of the second lens module 300 in the electronic device disclosed in the embodiment of the present application is relatively small, when the first lens module 200 is used with the second lens module 300, the anti-shake angle of the first lens module 200 will not be severely attenuated, and thus the handheld shooting effect of the electronic device can still be relatively good.

[0028] In order to further improve the shooting ability of the entire optical system in the electronic device, in a further embodiment of the present application, the relationship between the equivalent focal length F of the optical system composed of the first lens module 200 and the second lens module 300 and the equivalent focal length Fs of the first lens module 200 may satisfy: 2.1 ≤ F / Fs ≤ 2.8.

[0029] As described above, the second lens module 300 includes multiple lenses. In order to ensure that the second lens module 300 has relatively good optical effects, in a specific embodiment of the present application, the number of lenses in the second lens module 300 may be greater than or equal to 10. In this case, the second lens module 300 has a relatively good effect on light, and it can ensure that the loss of light is relatively small, thereby improving the shooting effect.

[0030] Optionally, in the second lens module 300, the multiple lenses may be distributed as a lens group as a whole. That is, in the process of designing the second lens module 300, based on parameters such as the number of lenses, by correspondingly designing the positions between the lenses and the optical parameters of each lens, the designed second lens module 300 can be used as an afocal telescopic system. Considering that errors may occur during the processing and assembly of the multiple lenses, and thus after the processing of the multiple lenses is completed based on the preset parameters, during the assembly process, if the multiple lenses are still assembled at the preset positions, the formed second lens module 300 may have a small optical power due to cumulative errors, and as a result, the parallel light incident on the second lens module 300 cannot exit in the state of parallel light, causing the actually produced second lens module 300 based on the pre-design to be unable to be used as an afocal telescopic system, thereby affecting the focusing process of the first lens module 200.

[0031] Therefore, in another embodiment of the present application, in the lenses of the second lens module 300, a part may form a first lens group 320, and another part may form a second lens group 330. Both the first lens group 320 and the second lens group 330 include multiple lenses. In this case, all the lenses can still be processed according to the preset parameters, and during the assembly process, the multiple lenses in the first lens group 320 can still be directly installed and fixed in the lens barrel 310 according to the preset positions. For the multiple lenses in the second lens group 330, they can be first positioned in the lens barrel 310 according to the preset positions, but the multiple lenses in the second lens group 330 are not fixed.

[0032] After that, based on the focusing means of the electronic device on the first lens module 200, the first lens module 200 is focused on an infinite object distance. Then, the aforementioned second lens group 330 is installed in the housing, and it is checked whether the entire optical system still remains in the state of being focused on the infinite object distance. If so, it is considered that the machining and assembly errors of the multiple lenses in the second lens module 300 are within the allowable range, and the multiple lenses in the second lens group 330 can be directly fixed to the corresponding preset installation positions.

[0033] On the contrary, if the optical system cannot remain in the state of being focused on the infinite object distance, the relative positions of the multiple lenses in the second lens group 330 can be adjusted so that the entire optical system can be refocused on the infinite object distance. At this time, the relative position relationship among the multiple lenses in the second lens group 330 is no longer the preset position. Thus, the machining and assembly errors of the second lens module 300 are compensated by changing the positions of the multiple lenses in the second lens group 330. Therefore, even if there are errors in the machining and assembly processes of the multiple lenses in the second lens module 300, the second lens module 300 can still be formed into an afocal telescopic system. Specifically, after completing the adjustment of the relative positions of the multiple lenses in the second lens group 330, the multiple lenses in the second lens group 330 can be fixedly connected to the lens barrel 310 by means of dispensing.

[0034] Of course, for the number and parameters of the lenses in each of the first lens group 320 and the second lens group 330, as well as the equivalent focal lengths of the first lens group 320 and the second lens group 330 respectively, those skilled in the art can flexibly determine them according to parameters such as the ratio of the equivalent focal lengths of the above optical system and the first lens module 200 respectively, and other limiting conditions.

[0035] In a specific embodiment of the present application, the equivalent focal length of the first lens group 320 is F1, the equivalent focal length of the second lens group 330 is F2, and 0.4 ≤ F2 / F1 ≤ 0.45 can be satisfied. In this case, the resolution of the optical system can be ensured to be relatively strong, and the overall optical length of the entire second lens module 300 can be made relatively small.

[0036] As described above, the number of lenses in the second lens module 300 is greater than or equal to 10. When the second lens module 300 includes the first lens group 320 and the second lens group 330, the number of lenses in the first lens group can be greater than or equal to 3. This can ensure that both the first lens group 320 and the second lens group 330 have relatively good optical effects, and can reduce the debugging difficulty of the second lens group 330. In addition, in this case, the ability to provide two or more low-dispersion lenses in the first lens group 320 can also be ensured, thereby ensuring that the chromatic aberration of the captured image is relatively small.

[0037] In a specific embodiment of the present application, the first lens group 320 may include five lenses, which sequentially include a first lens 321, a second lens 322, a third lens 323, a fourth lens 324, and a fifth lens 325 along the incident direction of light. At the same time, the optical powers of the first lens 321, the third lens 323, and the fifth lens 325 are all positive, and the optical powers of the second lens 322 and the fourth lens 324 are both negative. In this case, the first lens group 320 can ensure good light distribution effect after passing through the first lens group 320 while the number of lenses is relatively small.

[0038] Further, the second lens group 330 may include eight lenses, which sequentially include a sixth lens 331, a seventh lens 332, an eighth lens 333, a ninth lens 334, a tenth lens 335, an eleventh lens 336, a twelfth lens 337, and a thirteenth lens 338 along the incident direction of light. And the optical powers of the sixth lens 331, the seventh lens 332, the eleventh lens 336, the twelfth lens 337, and the thirteenth lens 338 are all positive, and the optical powers of the eighth lens 333, the ninth lens 334, and the tenth lens 335 are all negative. When the second lens group 330 adopts the above scheme, by cooperating with the first lens group 320, the image resolution of the second lens module 300 can be relatively strong, and the shooting effect of the image can be improved.

[0039] In order to reduce the chromatic aberration of the optical system and further improve the shooting effect, based on the first lens group 320 with the above structure, in the embodiment of the present application, the Abbe numbers of the first lens 321 and the third lens 323 may be greater than or equal to 80. That is, the first lens 321 and the third lens 323 are formed of low-dispersion materials to reduce the chromatic aberration of the captured image and improve the shooting effect of the image.

[0040] In order to further improve the utilization efficiency of light, in a specific embodiment of the present application, the exit pupil position of the second lens module 300 may coincide with the entrance pupil position of the first lens module 200.

[0041] Based on the above-mentioned electronic device disclosed in the embodiment of the present application, the present application gives three implementation manners of the specific parameters of multiple lenses in the second lens module 300. In the first embodiment, the structure of the second lens module 300 is as Figure 1 shown, and the specifications of the first lens module 200, the second lens module 300, and the optical system are as follows:

[0042] Among them, F is the equivalent focal length of the optical system formed by the combination of the first lens module 200 and the second lens module 300 in the electronic device, DFov is the field of view angle, Fs is the equivalent focal length of the first lens module 200, F1 is the equivalent focal length of the first lens group 320, F2 is the equivalent focal length of the second lens group, Vd1 is the Abbe number of the first lens 321, and Vd3 is the Abbe number of the third lens 323.

[0043] The surface type, curvature radius, surface thickness, refractive index, and Abbe number of multiple lenses sequentially distributed in the second lens module 300 along the light incident direction are as follows:

[0044] Based on the specific parameters of the second lens module 300 above, the defocus curve of the entire optical system is as Figure 5 shown, the axial chromatic aberration is as Figure 6 shown, and the optical distortion is as Figure 7 shown.

[0045] In the second embodiment, the structure of the second lens module 300 is as Figure 2 shown, and the specifications of the first lens module 200, the second lens module 300, and the optical system are as follows:

[0046] Among them, F is the equivalent focal length of the optical system formed by the combination of the first lens module 200 and the second lens module 300 in the electronic device, DFov is the field of view angle, Fs is the equivalent focal length of the first lens module 200, F1 is the equivalent focal length of the first lens group 320, F2 is the equivalent focal length of the second lens group, Vd1 is the Abbe number of the first lens 321, and Vd3 is the Abbe number of the third lens 323.

[0047] The surface type, curvature radius, surface thickness, refractive index, and Abbe number of multiple lenses sequentially distributed in the second lens module 300 along the light incident direction are as follows:

[0048] Based on the specific parameters of the second lens module 300 above, the defocus curve of the entire optical system is as Figure 8 shown, the axial chromatic aberration is as Figure 9 shown, and the optical distortion is as Figure 10 shown.

[0049] In the third embodiment, the structure of the second lens module 300 is as Figure 3 shown, and the specifications of the first lens module 200, the second lens module 300, and the optical system are as follows:

[0050] Wherein, F is the equivalent focal length of the optical system formed by the combination of the first lens module 200 and the second lens module 300 in the electronic device, DFov is the field of view angle, Fs is the equivalent focal length of the first lens module 200, F1 is the equivalent focal length of the first lens group 320, F2 is the equivalent focal length of the second lens group, Vd1 is the Abbe number of the first lens 321, and Vd3 is the Abbe number of the third lens 323.

[0051] The surface type, curvature radius, surface thickness, refractive index, and Abbe number of the multiple lenses arranged in sequence along the light incident direction in the second lens module 300 are as follows:

[0052] Based on the specific parameters of the second lens module 300 described above, the defocus curve of the entire optical system is as Figure 11 shown, the axial chromatic aberration is as Figure 12 shown, and the optical distortion is as Figure 13 shown.

[0053] Based on the electronic device disclosed in any of the above embodiments, the embodiment of the present application also discloses a control method, which is applied to any of the above electronic devices, as Figure 4 shown, and the control method includes: When the second lens module is not assembled outside the housing, output the image on the photosensitive chip to the display module of the electronic device; When the second lens module is assembled outside the housing, control the image on the photosensitive chip to rotate 180°, and output it to the display module of the electronic device.

[0054] Specifically, before the electronic device performs a shooting operation, it can first detect whether the second lens module is installed outside the housing. Specifically, it can be through a distance sensor or an infrared sensor, etc., and obtain whether the second lens module is installed outside the housing by detecting the distance or whether there is occlusion, etc.

[0055] Correspondingly, when the second lens module is not assembled outside the housing, since the image formed on the photosensitive chip after only being light-matched by the first lens module is a normal image, that is, its direction is not inverted, therefore, the image formed on the photosensitive chip can be directly output to the display module of the electronic device for the user to preview or view.

[0056] When a second lens module is assembled outside the housing, since the light is distributed successively through the second lens module and the first lens module and the image formed on the photosensitive chip is in an upside-down state in all directions, further, for the convenience of user preview or viewing, in the embodiments of the present application, the image can be first controlled to rotate 180°, and then output to the display module of the electronic device, so as to ensure that when the user holds the electronic device upright, the image seen from the display module is in the same orientation as the living body or object corresponding to directly viewing the image.

[0057] In the electronic device disclosed in the embodiments of the present application, the second lens module is a afocal telescopic system. However, since the second lens module includes a plurality of lenses, further, if the plurality of lenses in the second lens module are processed according to the preset parameters of the plurality of lenses and the plurality of lenses are assembled according to the preset positions of the plurality of lenses, affected by processing and assembly errors, the formed second lens module may have a small optical power, which may affect the process of the electronic device using only the focusing means of the first lens module to focus the entire optical system.

[0058] For this reason, in a specific embodiment of the present application, a part of the lenses in the second lens module can form a first lens group, and another part can form a second lens group, and both the first lens group and the second lens group include a plurality of lenses. In this case, the control method disclosed in the embodiments of the present application further includes: Based on the first preset positions of the plurality of lenses in the first lens group, fixedly connecting the plurality of lenses in the first lens group and the lens barrel; Based on the second preset positions of the plurality of lenses in the second lens group, positioning the plurality of lenses in the second lens group; Controlling the first lens module to focus on an infinite object distance; When the second lens module is installed outside the housing and the electronic device remains focused on an infinite object distance, fixedly connecting the plurality of lenses in the first lens group and the lens barrel; When the second lens module is installed outside the housing and the electronic device cannot focus on an infinite object distance, adjusting the positions of the plurality of lenses in the first lens group to a first actual position, and fixedly connecting the plurality of lenses in the first lens group and the lens barrel, so that the electronic device refocuses on an infinite object distance.

[0059] That is, in the control method disclosed in the embodiments of the present application, when processing the second lens module, first only make a plurality of lenses in the first lens group form a fixed connection relationship with the lens based on the first preset position. Specifically, through methods such as dispensing, etc., make a plurality of lenses in the first lens group be respectively fixed at corresponding positions in the lens barrel. For a plurality of lenses in the second lens group, the fixing work is not directly carried out based on the second preset position. Instead, first verify the equivalent focal length of the second lens module. After the verification passes, then carry out the fixing work on a plurality of lenses in the second lens group; and in the case where the verification fails, based on the actual situation of the second lens module, correspondingly adjust the relative positions between a plurality of lenses in the second lens group to ensure that even in the presence of processing and assembly errors, the second lens module can still be an afocal system, so that when the second lens module is installed outside the housing, it can still complete the focusing work of the entire optical system only by using the focusing means of the first lens module.

[0060] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0061] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can still make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. An electronic device, characterized in that: It includes a housing, a photosensitive chip, a first lens module and a second lens module, wherein: The housing is provided with a light entrance hole, the photosensitive chip and the first lens module are both installed in the housing, the photosensitive chip and the light entrance hole are both facing the first lens module, and the equivalent focal length Fs of the first lens module is 69 mm to 135 mm; The second lens module comprises a lens barrel and a plurality of lenses, the plurality of lenses are fixedly mounted on the lens barrel, the second lens module is an afocal system, and the second lens module is detachably fixed to the outer side of the light entrance hole in the housing; The relationship between the equivalent focal length F of the optical system composed of the first lens module and the second lens module and the equivalent focal length Fs of the first lens module satisfies: 2≤F / Fs≤3.

2. The electronic device according to claim 1, characterized in that: The number of lenses in the second lens module is greater than or equal to 10.

3. The electronic device according to claim 2, characterized in that: Among the lenses of the second lens module, one part constitutes a first lens group, and the other part constitutes a second lens group. The first lens group and the second lens group both include multiple lenses. The equivalent focal length of the first lens group is F1, the equivalent focal length of the second lens group is F2, and 0.4≤F2 / F1≤0.

45.

4. The electronic device according to claim 3, characterized in that: The number of lenses in the first lens group is greater than or equal to 3.

5. The electronic device according to claim 3, characterized in that: The first lens group includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially distributed, and the optical focal lengths of the first lens, the third lens and the fifth lens are all positive, and the optical focal lengths of the second lens and the fourth lens are all negative.

6. The electronic device according to claim 5, characterized in that: The second lens group includes a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, a twelfth lens and a thirteenth lens which are sequentially distributed, and the optical focal powers of the sixth lens, the seventh lens, the eleventh lens, the twelfth lens and the thirteenth lens are all positive, and the optical focal powers of the eighth lens, the ninth lens and the tenth lens are all negative.

7. The electronic device according to claim 5, characterized in that: The Abbe numbers of the first lens and the third lens are both greater than or equal to 80.

8. The electronic device according to claim 1, characterized in that: The exit pupil position of the second lens module coincides with the entrance pupil position of the first lens module.

9. A control method, applied to the electronic device according to any one of claims 1 to 8, characterized in that: The control method comprises: When the second lens module is not mounted outside the housing, outputting the image on the photosensitive chip to a display module of an electronic device; When the second lens module is mounted outside the housing, the image on the photosensitive chip is controlled to rotate 180° and output to a display module of the electronic device.

10. The control method according to claim 9, characterized in that: Among the lenses of the second lens module, a part constitutes a first lens group, and the other part constitutes a second lens group, and the first lens group and the second lens group each include a plurality of lenses, and the control method further includes: Positioning a plurality of lenses in the first lens group based on first preset positions of the plurality of lenses in the first lens group; Based on the second preset positions of the plurality of lenses in the second lens group, fixedly connecting the plurality of lenses in the second lens group and the lens barrel; Controlling the first lens module to focus on an infinite object distance; When the second lens module is installed outside the housing and the electronic device is kept focused at an infinite object distance, a plurality of lenses in the first lens group and the lens barrel are fixedly connected; When the second lens module is installed outside the housing and the electronic device cannot focus on the infinite object distance, the positions of the multiple lenses in the first lens group are adjusted to the first actual position, and the multiple lenses in the first lens group and the lens barrel are fixedly connected to enable the electronic device to refocus on the infinite object distance.

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