Camera, lens and camera main body

Abstract

The embodiment of the utility model provides a camera, a lens and a camera main body, which are applied to the technical field of cameras, the camera comprises the camera main body and the lens, and the lens is detachably and rotatably arranged on the camera main body; each of the camera main body and the lens comprises a plurality of contacts; the plurality of contacts comprise power supply contacts and signal contacts; in the rotary installation process of the lens, when the camera body starts to make contact with the corresponding signal contact in the lens, the camera body does not make contact with the corresponding power contact in the lens; after the camera body is rotated by the first radian, the camera body starts to be in contact with a corresponding power contact in the lens, and the camera body still contacts with a corresponding signal contact in the lens; and / or the lens is also provided with a buffer capacitor, one end of a power supply contact arranged on the lens is connected with a first end of the buffer capacitor, and a second end of the buffer capacitor is grounded. According to the scheme of the embodiment of the utility model, impact caused by electrification in advance can be prevented, and the safety of the camera is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cameras, in particular to a camera, a lens and a camera body. Background Art

[0002] With the continuous development of technology, taking pictures with cameras has penetrated into people's daily lives.

[0003] Currently, in order to adapt to different shooting modes and distances, the lenses of many cameras are often designed to be detachable, so as to facilitate users to install different lenses according to different shooting needs. The camera body and the lens are electrically connected through contacts, so as to realize the drive of the camera body for the lens. And in order to facilitate lens replacement, the lens often supports hot plugging, that is, it supports the disassembly and installation of the lens when the camera is powered on.

[0004] However, since the lens and the camera body are generally connected by a snap connection, when disassembling and installing the lens, the lens needs to be rotated. When the lens is rotated, the contacts on the lens and the contacts on the body may have a short-term alternating contact. When hot plugging, since the body is in a powered state, this short-term alternating contact may damage the circuit. Summary of the Utility Model

[0005] The purpose of the embodiments of the utility model is to provide a camera, a lens and a camera body to achieve the purpose of reducing the risk of hot plugging of the camera. The specific technical solutions are as follows:

[0006] In the first aspect of the embodiments of the utility model, a camera is first provided. The camera includes a camera body and a lens. The lens is rotatably and detachably mounted on the camera body;

[0007] Both the camera body and the lens include a plurality of contacts; among the plurality of contacts, there are power contacts and signal contacts;

[0008] During the process of rotatably mounting the lens, when the corresponding signal contacts in the camera body and the lens start to contact, the corresponding power contacts in the camera body and the lens have not yet contacted; after rotating the first radian, the corresponding power contacts in the camera body and the lens start to contact, and the corresponding signal contacts in the camera body and the lens are still in contact; and / or,

[0009] A buffer capacitor is further provided on the lens. One end of the power contact provided on the lens is connected to the first end of the buffer capacitor, and the second end of the buffer capacitor is grounded.

[0010] In a possible implementation manner, when the camera body and the lens are aligned and the corresponding contacts are not in contact:

[0011] The second radian between the nearest edge of the corresponding signal contact in the camera body and the lens is less than the third radian between the nearest edge of the corresponding power contact in the camera body and the lens;

[0012] The fourth radian between the farthest edge of the corresponding signal contact in the camera body and the lens is greater than the third radian.

[0013] In a possible implementation manner, when the camera body and the lens are aligned and the corresponding contacts are not in contact:

[0014] The fifth radian between the center of the corresponding signal contact in the camera body and the lens is equal to the sixth radian between the center of the corresponding power contact in the camera body and the lens;

[0015] The sizes of the signal contacts in the camera body and the lens are larger than the sizes of the power contacts in the camera body and the lens.

[0016] In a possible implementation manner, in the initial state where the camera body and the lens are aligned and installed, the corresponding signal contacts on the camera body and the lens are in contact, and the corresponding power contacts in the camera body and the lens are not in contact; after rotating the first radian, the corresponding power contacts in the camera body and the lens start to contact, and the corresponding signal contacts in the camera body and the lens are still in contact.

[0017] In a possible implementation manner, in the initial state where the camera body and the lens are aligned and installed, the corresponding signal contacts on the camera body and the lens are in contact, and the corresponding power contacts in the camera body and the lens are not in contact; the fifth radian between the center of the corresponding signal contact in the camera body and the lens is equal to the sixth radian between the center of the corresponding power contact in the camera body and the lens; the sizes of the signal contacts in the camera body and the lens are larger than the sizes of the power contacts in the camera body and the lens.

[0018] In the second aspect of the embodiments of the present invention, a lens is provided, and the lens includes a plurality of contacts; the plurality of contacts include power contacts and signal contacts;

[0019] During the rotation and installation of the lens, when the corresponding signal contacts in the camera body and the lens start to make contact, the corresponding power contacts in the camera body and the lens have not yet made contact; after rotating the first radian, the corresponding power contacts in the camera body and the lens start to make contact, and the corresponding signal contacts in the camera body and the lens are still in contact; and / or,

[0020] A buffer capacitor is further provided on the lens. One end of the power contact provided on the lens is connected to the first end of the buffer capacitor, and the second end of the buffer capacitor is grounded.

[0021] In a possible implementation manner, when the camera body and the lens are aligned and the corresponding contacts are not in contact:

[0022] A second radian between the nearest edge of the corresponding signal contact in the camera body and the lens is smaller than a third radian between the nearest edge of the corresponding power contact in the camera body and the lens;

[0023] A fourth radian between the farthest edge of the corresponding signal contact in the camera body and the lens is greater than the third radian.

[0024] In a possible implementation manner, when the camera body and the lens are aligned and the corresponding contacts are not in contact:

[0025] A fifth radian between the center of the corresponding signal contact in the camera body and the lens is equal to a sixth radian between the center of the corresponding power contact in the camera body and the lens;

[0026] The size of the signal contact in the lens is larger than the size of the power contact in the lens.

[0027] In a possible implementation manner, in the initial state when the camera body and the lens are aligned and installed, the corresponding signal contacts on the camera body and the lens are in contact, and the corresponding power contacts in the camera body and the lens have not yet made contact; after rotating the first radian, the corresponding power contacts in the camera body and the lens start to make contact, and the corresponding signal contacts in the camera body and the lens are still in contact.

[0028] In a possible implementation manner, in the initial state where the camera body and the lens are aligned and mounted, the corresponding signal contacts on the camera body and the lens are in a contact state, and the corresponding power contacts in the camera body and the lens are not in contact yet; the fifth radian between the centers of the corresponding signal contacts in the camera body and the lens is equal to the sixth radian between the centers of the corresponding power contacts in the camera body and the lens; the size of the signal contacts in the lens is larger than the size of the power contacts in the lens.

[0029] In a third aspect of the embodiments of the present invention, a camera body is provided.

[0030] The camera body includes a plurality of contacts; the plurality of contacts include power contacts and signal contacts.

[0031] During the process of the lens being rotationally mounted, when the corresponding signal contacts in the camera body and the lens start to contact, the corresponding power contacts in the camera body and the lens are not in contact yet; after rotating the first radian, the corresponding power contacts in the camera body and the lens start to contact, and the corresponding signal contacts in the camera body and the lens are still in contact.

[0032] In a possible implementation manner, when the camera body and the lens are aligned and the corresponding contacts are not in contact:

[0033] The second radian between the nearest edges of the corresponding signal contacts in the camera body and the lens is smaller than the third radian between the nearest edges of the corresponding power contacts in the camera body and the lens.

[0034] The fourth radian between the farthest edges of the corresponding signal contacts in the camera body and the lens is larger than the third radian.

[0035] In a possible implementation manner, when the camera body and the lens are aligned and the corresponding contacts are not in contact:

[0036] The fifth radian between the centers of the corresponding signal contacts in the camera body and the lens is equal to the sixth radian between the centers of the corresponding power contacts in the camera body and the lens.

[0037] The size of the signal contacts in the camera body is larger than the size of the power contacts in the camera body.

[0038] In a possible implementation manner, in the initial state where the camera body and the lens are aligned and mounted, the corresponding signal contacts on the camera body and the lens are in contact, and the corresponding power contacts in the camera body and the lens are not in contact yet; after rotating by a first radian, the corresponding power contacts in the camera body and the lens start to contact, and the corresponding signal contacts in the camera body and the lens are still in contact.

[0039] In a possible implementation manner, in the initial state where the camera body and the lens are aligned and mounted, the corresponding signal contacts on the camera body and the lens are in contact, and the corresponding power contacts in the camera body and the lens are not in contact yet; the fifth radian between the centers of the corresponding signal contacts in the camera body and the lens is equal to the sixth radian between the centers of the corresponding power contacts in the camera body and the lens; the size of the signal contacts in the camera body is larger than the size of the power contacts in the camera body.

[0040] A camera, a lens and a camera body provided by an embodiment of the present invention, wherein the camera includes a camera body and a lens, and the lens is rotatably and detachably mounted on the camera body; both the camera body and the lens include a plurality of contacts; the plurality of contacts include power contacts and signal contacts; during the process of rotatably mounting the lens, when the corresponding signal contacts in the camera body and the lens start to contact, the corresponding power contacts in the camera body and the lens are not in contact yet; after rotating by a first radian, the corresponding power contacts in the camera body and the lens start to contact, and the corresponding signal contacts in the camera body and the lens are still in contact; and / or, a buffer capacitor is further provided on the lens, one end of the power contact provided on the lens is connected to the first end of the buffer capacitor, and the second end of the buffer capacitor is grounded. The solution of the embodiment of the present invention realizes delayed contact of the power contacts and thus delayed power supply by the fact that during the process of rotatably mounting the lens, when the corresponding signal contacts in the camera body and the lens start to contact, the corresponding power contacts in the camera body and the lens are not in contact yet, and after rotating by a first radian, the corresponding power contacts in the camera body and the lens start to contact, and the corresponding signal contacts in the camera body and the lens are still in contact, and / or, by connecting the power contacts to the buffer capacitor, after the power contacts are successfully connected, the power supply will first charge the buffer capacitor, and then after the charging is completed, it will start to supply power to the lens, realizing delayed power supply, thereby preventing the impact caused by premature power-on, reducing the risk of hot plugging of the camera, and improving the safety of the camera.

[0041] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. Description of the Drawings

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0043] Figure 1a The first structural schematic diagram of the power contact and signal contact of the camera body provided by the embodiment of the present invention;

[0044] Figure 1b The first structural schematic diagram of the power contact and signal contact of the lens provided by the embodiment of the present invention;

[0045] Figure 2 The first state schematic diagram of the connection process provided by the embodiment of the present invention;

[0046] Figure 3a The second state schematic diagram of the connection process provided by the embodiment of the present invention;

[0047] Figure 3b The third state schematic diagram of the connection process provided by the embodiment of the present invention;

[0048] Figure 3c The fourth state schematic diagram of the connection process provided by the embodiment of the present invention;

[0049] Figure 4a The second structural schematic diagram of the power contact and signal contact of the camera body provided by the embodiment of the present invention;

[0050] Figure 4b The second structural schematic diagram of the power contact and signal contact of the lens provided by the embodiment of the present invention;

[0051] Figure 4c The fifth state schematic diagram of the connection process provided by the embodiment of the present invention;

[0052] Figure 4d The sixth state schematic diagram of the connection process provided by the embodiment of the present invention;

[0053] Figure 4e The seventh state schematic diagram of the connection process provided by the embodiment of the present invention;

[0054] Figure 5a The third structural schematic diagram of the power contact and signal contact of the camera body provided by the embodiment of the present invention;

[0055] Figure 5b The third structural schematic diagram of the power contact and signal contact of the lens provided by the embodiment of the present utility model;

[0056] Figure 5c The eighth state schematic diagram of the connection process provided by the embodiment of the present utility model;

[0057] Figure 5d The ninth state schematic diagram of the connection process provided by the embodiment of the present utility model;

[0058] Figure 5e The tenth state schematic diagram of the connection process provided by the embodiment of the present utility model;

[0059] Figure 6 The eleventh state schematic diagram of the connection process provided by the embodiment of the present utility model;

[0060] Figure 7a The first structural schematic diagram of the initial state of the camera body provided by the embodiment of the present utility model;

[0061] Figure 7b The first structural schematic diagram of the initial state of the lens provided by the embodiment of the present utility model;

[0062] Figure 7c The second structural schematic diagram of the initial state provided by the embodiment of the present utility model;

[0063] Figure 7d The third structural schematic diagram of the initial state provided by the embodiment of the present utility model;

[0064] Figure 8a A top view of the lens and the camera body provided by the embodiment of the present utility model;

[0065] Figure 8b A front view of the lens provided by the embodiment of the present utility model;

[0066] Figure 8c Another top view of the lens and the camera body provided by the embodiment of the present utility model;

[0067] Figure 9 A circuit diagram of a camera interface provided by the embodiment of the present utility model;

[0068] Figure 10 The power-on flow chart of the lens provided by the embodiment of the present utility model.

[0069] Explanation of reference numerals:

[0070] 100 - Camera body; 110 - Signal contact; 120 - Power contact; 130 - Bayonet mount; 140 - Positioner; 200 - Lens; 210 - Positioning slot; a - Second radian; b - Third radian; c - Fourth radian; A - First target radian; B - Second target radian; C - Third target radian; D - Fourth target radian; d - Fifth radian; e - Sixth radian. Detailed implementation

[0071] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art based on this application belong to the scope of protection of the present utility model.

[0072] Currently, many cameras support hot swapping. Among them, hot swapping means that when an electronic device is in an operating state, inserting or removing a certain device will not affect the normal operation of the device. In a camera, if the lens supports hot swapping, the lens can be replaced while the camera is running without having to turn off the camera. The hot swapping of the lens mainly depends on the design of the interface and the support of the camera. If the lens interface is well-designed, has a high matching degree with the camera, and the camera itself supports this function, then the hot swapping function can be used. However, when the camera lens and the camera body are hot-swapped, the body is in a powered state, and the lens needs to be rotated during hot swapping, resulting in the contacts on the lens alternatingly contacting the contacts on the camera body. This short-term alternating contact may damage the circuit. To reduce the risk of camera hot swapping, the embodiments of the present utility model provide a camera, a lens, and a camera body.

[0073] In the first aspect of the embodiments of the present utility model, first, a camera interface is provided. Refer to Figure 1a and Figure 1b , Figure 1a is the first structural schematic diagram of the power contact and the signal contact of the camera body provided by the embodiments of the present utility model, Figure 1b is the first structural schematic diagram of the power contact and the signal contact of the lens provided by the embodiments of the present utility model;

[0074] The camera includes a camera body 100 and a lens 200. The lens 200 is detachably and rotatably mounted on the camera body 100;

[0075] Both the camera body 100 and the lens 200 include a plurality of contacts; among the plurality of contacts, there are a power contact 120 and a signal contact 110;

[0076] During the rotation and installation of the lens 200, when the corresponding signal contacts 110 in the camera body 100 and the lens 200 start to make contact, the corresponding power contacts 120 in the camera body 100 and the lens 200 have not yet made contact; after rotating the first radian, the corresponding power contacts 120 in the camera body 100 and the lens 200 start to make contact, and the corresponding signal contacts 110 in the camera body 100 and the lens 200 are still in contact; and / or,

[0077] A buffer capacitor is also provided on the lens 200. One end of the power contact 120 provided on the lens 200 is connected to the first end of the buffer capacitor, and the second end of the buffer capacitor is grounded.

[0078] First of all, it should be noted that the camera provided by the embodiment of the present invention includes a camera body 100 and a lens 200, and the two can be rotatably connected. Specifically, they can be rotatably connected through two matching interfaces installed on the camera body 100 and the lens 200. The interface on the camera body 100 can be installed at the connection of the camera body 100 facing the lens 200, and the interface on the lens 200 can be installed at the connection of the lens 200 facing the camera body 100. During actual use, when connecting through the rotating interface, one is a male bayonet and the other is a female bayonet. It is necessary to insert the male bayonet of the camera body 100 or the lens 200 into the female bayonet of the lens 200 or the camera body 100, and then rotate. When rotated to the specified position, the connection is achieved. For example, when connecting the camera body and the lens 200, if the lens 200 has a male bayonet, the interface of the lens 200 can be inserted into the female bayonet of the camera body 100, and then by rotating the lens 200, the camera body 100 and the lens 200 are connected.

[0079] Meanwhile, in the embodiment of the present utility model, both the camera body 100 and the lens 200 include a plurality of contacts. The plurality of contacts on the camera body 100 and the plurality of contacts on the lens 200 can all face the connection surface of the camera body 100 and the lens 200; among the plurality of contacts, there are power contacts 120 and signal contacts 110. Specifically, the plurality of contacts on the camera body 100 and the lens 200 can be arranged along the circumferential direction. The corresponding contacts refer to: when the camera body 100 and the lens 200 are connected, the contacts on the camera body 100 and the lens 200 that are in contact and connected to each other, so as to supply power through the corresponding power contacts 120 and communicate through the corresponding signal contacts 110, etc.; that is, the corresponding signal contacts are a pair of contacts for communication between the camera body 100 and the lens 200 specified in the design, and the corresponding power contacts are a pair of contacts for power supply between the camera body 100 and the lens 200 specified in the design. For example, a power supply is provided inside the camera body 100. After the camera body 100 and the lens 200 are connected, the contacts between them come into contact with each other, and the camera body 100 can supply power to the lens 200 through the power contacts 120. Specifically, during actual use, communicating through the signal contacts 110 can help the lens 200 achieve functions such as focusing and anti-shake, and the camera body 100 can supply power to the lens 200 motor through the power contacts 120. Among them, the contacts in the embodiment of the present utility model can be made of metal materials, such as copper, gold, silver, etc. It can be understood that the shapes of the contacts in the drawings of the embodiment of the present utility model are only for illustration, and their specific shapes can be customized according to the actual situation.

[0080] In the embodiment of the present utility model, during the rotation and installation of the lens 200, when the corresponding signal contacts 110 in the camera body 100 and the lens 200 start to contact, the corresponding power contacts 120 in the camera body 100 and the lens 200 have not yet contacted; after rotating the first radian, the corresponding power contacts 120 in the camera body 100 and the lens 200 start to contact, and the corresponding power contacts 120 in the camera body 100 and the lens 200 remain in contact. Specifically, the delayed contact of the power contacts 120 compared to the signal contacts 110 can be achieved through various structural designs. In one example, the size of the power contacts 120 can be smaller than the size of the signal contacts 110. Thus, during the rotational connection process, when the edge of the signal contacts 110 starts to contact, since the power contacts 120 are small, they do not start to contact at this time, and when the power contacts 120 start to contact, the signal contacts 110 are still in contact, realizing the delayed contact of the power contacts 120. In this solution, in the final connection state, the center of each contact on the lens 200 can correspond to the center of each contact on the camera body 100, and moreover, the distance between every two adjacent contacts can be the same. In another example, the radian between every two adjacent signal contacts 110 can be set to be the same, while the radian between the adjacent signal contacts 110 and power contacts 120 on the camera body 100 and the lens 200 is set differently. For example, the radian between the adjacent signal contacts 110 and power contacts 120 on the camera body 100 is greater than or less than the radian between the adjacent signal contacts 110 and power contacts 120 on the lens 200. Thus, when the signal contacts 110 start to contact, due to the difference between the lens 200 and the camera body 100, the power contacts 120 have not yet contacted, realizing the delayed contact of the power contacts 120. In this solution, in the final connection state, the centers of the signal contacts 110 on the lens 200 and the camera body 100 may not correspond. Specifically, reference can be made to the subsequent embodiments.

[0081] In an embodiment of the present utility model, a buffer capacitor is provided on the lens 200. One end of a power supply contact 120 provided on the lens 200 is connected to the first end of the buffer capacitor, and the second end of the buffer capacitor is grounded. Buffering can be achieved through the buffer capacitor, thereby delaying power supply. As is known to those skilled in the art, when a voltage is applied between the two plates of a capacitor, the capacitor will store charge. The buffer capacitor in the embodiment of the present utility model can reduce the parasitic inductance of the electrical wiring. Among them, the parasitic inductance will generate a large surge when the switch is turned off (cutting off the current). When the surge exceeds the rated value of the component, it may even cause damage to the product. One end of the power supply contact 120 of the camera interface in the embodiment of the present utility model is connected to one end of the buffer capacitor. There are at least two power supply contacts 120 in the embodiment of the present utility model, and every two power supply contacts 120 can be connected in series through a resistor. For example, when there are two power supply contacts 120 in the embodiment of the present utility model, one end of the first power supply contact 120 is connected to the second power supply contact 120 through a resistor, and the other contact of the first power supply contact 120 is connected to the buffer capacitor. Among them, the size of the buffer capacitor can be selected according to the actual situation. It should be noted that in the embodiment of the present utility model, the improvement of the circuit part: a buffer capacitor is provided on the lens 200, one end of the power supply contact 120 provided on the lens 200 is connected to the first end of the buffer capacitor, and the second end of the buffer capacitor is grounded; this only applies to the lens 200 and does not apply to the camera body 100. Since through this buffer capacitor, when the power supply contact 120 is turned on, the current will first flow into the buffer capacitor in the lens 200 and then power supply will be carried out, thereby achieving a time delay, and further realizing that the power supply from the camera body 100 to the lens 200 is delayed from the contact of the contact, preventing the impact caused by premature power-on, reducing the risk of hot plugging, and improving safety. Assuming that when the buffer capacitor is installed on the camera body 100, because the camera body 100 supplies power to the lens 200, it may cause the camera body 100 to have fully charged the buffer capacitor before the lens 200 is installed, resulting in the buffer capacitor losing its function. Therefore, the buffer capacitor in the embodiment of the present utility model is only installed on the lens 200. The other end of the buffer capacitor in the embodiment of the present utility model is grounded, so that when one end of the capacitor is grounded, a stable potential difference will be formed in the circuit, and this potential difference can help maintain the stable signal transmission in the circuit. Especially in a high-frequency circuit, grounding one end of the capacitor can form a low-impedance grounding point, thereby preventing external interference and mutual interference of internal signals, and improving the response speed and anti-interference ability of the circuit. Specifically, in the circuit, when one end of the capacitor is grounded, it is essentially forming a voltage-dividing circuit between the capacitor and the ground. The voltage-dividing ratio of this voltage-dividing circuit is proportional to the capacitance value of the capacitor and inversely proportional to the voltage of the capacitor. In a high-frequency circuit, the magnitude of the impedance is related to the capacitance value of the capacitor and the frequency at that time. Therefore, when one end of the capacitor is grounded, a low-impedance grounding point can be formed.This grounding point can make the signals in the circuit more stable, suppress external interference, and improve system performance. In the embodiment of the present utility model, the other end of the buffer capacitor is grounded, which can be used to resist interference and improve system performance, prevent external interference and mutual interference of internal signals, and improve the response speed of the circuit.

[0082] It can be seen that through the camera of the embodiment of the present utility model, during the rotation and installation of the lens 200, when the corresponding signal contacts 110 in the camera body 100 and the lens 200 start to contact, the corresponding power contacts 120 in the camera body 100 and the lens 200 have not yet contacted. After rotating the first radian, the corresponding power contacts 120 in the camera body 100 and the lens 200 start to contact, and the corresponding power contacts 120 in the camera body 100 and the lens 200 still remain in contact, realizing the delayed contact of the power contacts 120, thereby delaying the power supply, and / or, by connecting the power contacts 120 to the buffer capacitor, after the power contacts 120 are successfully connected, the power supply will first charge the buffer capacitor, and after the charging is completed, it will start to supply power to the lens 200, realizing the delayed power supply, thereby preventing the impact caused by premature power-on, reducing the risk of hot plugging of the camera, and improving the safety of the camera.

[0083] In a possible implementation manner, when the camera body 100 and the lens 200 are aligned and the corresponding contacts are not in contact:

[0084] The second radian a between the nearest edges of the corresponding signal contacts 110 in the camera body 100 and the lens 200 is smaller than the third radian b between the nearest edges of the corresponding power contacts 120 in the camera body 100 and the lens 200;

[0085] The fourth radian c between the farthest edges of the corresponding signal contacts 110 in the camera body 100 and the lens 200 is greater than the third radian b.

[0086] First of all, it needs to be explained that the radian in the embodiment of the present utility model refers to the ratio of the arc length to the radius, and can also be expressed as the included angle of the rays emitted from the circle, with the center of the circle being the rotation center of the lens 200. For example, the second radian a is the included angle between the rays emitted from the center of the circle passing through the nearest edges of the corresponding signal contacts 110 in the camera body 100 and the lens 200, and the third radian b is the included angle between the rays emitted from the center of the circle passing through the nearest edges of the corresponding power contacts 120 in the camera body 100 and the lens 200, and the fourth radian c is the included angle between the nearest edges of the corresponding power contacts 120 in the camera body 100 and the lens 200. For example, see Figure 2 , Figure 2This is a schematic diagram of the first state in the connection process provided by an embodiment of the present utility model. In the figure, the second radian a is the radian between the nearest edges of the corresponding signal contacts 110 in the camera body 100 and the lens 200, and the third radian b is the radian between the nearest edges of the corresponding power contacts 120 in the camera body 100 and the lens 200. Among them, since the second radian a between the nearest edges of the corresponding signal contacts 110 in the camera body 100 and the lens 200 is smaller than the third radian b between the nearest edges of the corresponding power contacts 120 in the camera body 100 and the lens 200, during the process of rotating the lens 200 for connection, due to the smaller second radian a corresponding to the signal contacts 110, the signal contacts 110 will come into contact first, and then continue to rotate until the power contacts start to contact; moreover, since the fourth radian c between the farthest edges of the corresponding signal contacts 110 in the camera body 100 and the lens 200 is larger than the third radian b, during the process of rotating the lens 200, when the power contacts 120 of the lens 200 come into contact, the signal contacts 110 are still in contact. In the embodiment of the present utility model, by setting the radian difference between the power contacts 120 and the signal contacts 110 in the camera body 100, the delayed contact of the power contacts 120 is achieved, thereby delaying the power supply. Specifically, refer to Figure 3a , since the second radian a between the nearest edges of the corresponding signal contacts 110 in the camera body 100 and the lens 200 is smaller than the third radian b between the nearest edges of the corresponding power contacts 120 in the camera body 100 and the lens 200, when the signal contacts 110 start to contact, the power contacts 120 have not contacted yet due to the difference between the second radian a and the third radian b. During the continued rotation process, refer to Figure 3b , when the power contacts 120 start to contact, the signal contacts 110 are still in the contact state. Finally, refer to Figure 3c , since the fourth radian c between the farthest edges of the corresponding signal contacts 110 in the camera body 100 and the lens 200 is larger than the third radian b, when the power contacts 120 are in full contact, the signal contacts 110 are still in contact. It should be noted that the different shapes of the above-mentioned image power contacts 120 and signal contacts 110 are only for the convenience of distinction, and their shapes can be the same during actual use. In a specific implementation manner, the radian of the power contacts 120 and the signal contacts 110 in the camera body 100 is larger than the radian of the power contacts 120 and the signal contacts 110 in the lens 200. By setting the radian difference between the power contacts 120 and the signal contacts 110 in the camera body 100, the delayed contact of the power contacts 120 is achieved, thereby delaying the power supply. Specifically, as Figure 4a and Figure 4bAs shown, the first target arc A of the power contact 120 and the signal contact 110 in the camera body 100 is greater than the second target arc B of the power contact 120 and the signal contact 110 in the lens 200. Thus, during the rotational connection process of the camera body 100 and the lens 200, referring to Figure 4c , when the signal contact 110 starts to make contact, the power contact 120 has not made contact yet due to the difference that the first target arc A is greater than the second target arc B. During the continued rotation process, referring to Figure 4d , when the power contact 120 starts to make contact, the signal contact 110 is still in a contact state. Finally, referring to Figure 4e , when the power contact 120 is in full contact, the signal contact 110 is still in contact. It should be noted that the different shapes of the above-mentioned power contact 120 and signal contact 110 of the image are only for the convenience of distinction, and their shapes can be the same during actual use. In another specific implementation, the power contact 120 is arranged at the rearmost end in the rotational direction; the third target arc C of the power contact 120 and the signal contact 110 in the camera body 100 is smaller than the fourth target arc D of the power contact 120 and the signal contact 110 in the lens 200. Specifically, as Figure 5a and Figure 5b shown, the third target arc C of the power contact 120 and the signal contact 110 in the camera body 100 is smaller than the fourth target arc D of the power contact 120 and the signal contact 110 in the lens 200. Thus, during the rotational connection process of the camera body 100 and the lens 200, referring to Figure 5c , when the signal contact 110 starts to make contact, the power contact 120 has not made contact yet due to the difference between the third target arc C and the fourth target arc D. During the continued rotation process, referring to Figure 5d , when the power contact 120 starts to make contact, the signal contact 110 is still in a contact state. Finally, referring to Figure 5e , when the power contact 120 is in full contact, the signal contact 110 is still in contact.

[0087] In a possible implementation manner, when the camera body 100 and the lens 200 are aligned and the corresponding contacts are not in contact:

[0088] The fifth arc d between the centers of the corresponding signal contacts 110 in the camera body 100 and the lens 200 is equal to the sixth arc e between the centers of the corresponding power contacts 120 in the camera body 100 and the lens 200;

[0089] The sizes of the signal contacts 110 in the camera body 100 and the lens 200 are larger than the sizes of the power contacts 120 in the camera body 100 and the lens 200.

[0090] Among them, referring to Figure 6, the fifth radian d is the included angle between the center of the corresponding signal contact 110 in the camera body 100 and the lens 200, and the sixth radian e is the included angle between the center of the corresponding power contact 120 in the camera body 100 and the lens 200. In the embodiment of the present utility model, the size of the power contact 120 can be smaller than that of the signal contact 110. Among them, the shape of the contact in the embodiment of the present utility model can be various shapes, such as circular, square, etc. In the embodiment of the present utility model, the shape of the power contact 120 can be the same as that of other contacts, but their sizes are different. For example, both of them are circular, but their diameters are different, and the diameter of the power contact 120 is smaller than that of the signal contact 110. In the embodiment of the present utility model, the number of contacts can be set according to actual conditions. For example, the number of power contacts 120 is 2-4, and the total number of contacts is 10-20. In one example, the number of contacts in the embodiment of the present utility model can be 15 contacts, and the number of power contacts 120 can be two power contacts 120, and the number of signal contacts 110 can be 13 contacts. In the embodiment of the present utility model, the multiple contacts can be arranged along the circumference direction of the interface of the camera body 100. At least two of the power contacts 120 can be arranged at the end in the rotation direction of the rotary bayonet, or can be arranged in the front or interspersed among the signal contacts 110. In a possible implementation manner, the diameter of the power contact 120 is 0.9-1.6 mm, and the diameter of the signal contact 110 is 1.6-2.0 mm. In the embodiment of the present utility model, the external structure of the POGO PIN can be: flat-bottom type, plug-in type, bent type, double-pin shaft, threaded type, wire-bonding type, side-hole type, etc., and the internal structure of the POGO PIN can be: reverse drilling, cross-sectional slope, cross-sectional slope plus ball, through-hole type, tail plug type, double-head type, etc. The POGO PIN in the embodiment of the present utility model can be formed into a spring-type pin by riveting and pre-pressing three basic components, namely a pin shaft, a spring, and a needle tube, by a precision instrument, and there can be a precision spring structure inside. And the surface of the POGO PIN in the embodiment of the present utility model can be plated according to requirements, and the plating can be selected as gold plating. Through this plating, its anti-corrosion function, mechanical properties, electrical properties, etc. can be better improved. By using the POGO PIN in the embodiment of the present utility model, the weight and the external volume of the connector can be reduced, and the connector can be made more delicate and beautiful. For example, the multiple contacts in the embodiment of the present utility model can be 15 POGO PINs, and the power contact 120 can be two POGO PINs, and the signal contact 110 can be 13 POGO PINs. And, the diameter of the power contact 120 is 0.9-1.6 mm, and the diameter of the signal contact 110 is 1.6-2.0 mm.Specifically, the diameter of the POGO PIN corresponding to the power contact 120 can be 1.0 mm, 1.5 mm, etc., and the diameter of the POGO PIN corresponding to the signal contact 110 can be 1.7 mm, 1.8 mm, etc. That is, the POGO PIN in the embodiment of the present invention can be circular. When it is circular, the diameter of the POGO PIN corresponding to the power contact 120 is 1.5 mm, and the diameter of the POGO PIN corresponding to the signal contact 110 is 1.7 mm. Thus, when the lens 200 is hot-plugged, when the lens 200 is rotated so that the contacts of the lens 200 are connected to the contacts of the camera body 100, when the signal contacts 110 have started to contact, the power contacts 120 have not yet contacted, so as to achieve delayed contact. Finally, when all the signal contacts 110 are in contact, the power contacts 120 start to contact and conduct electricity, preventing the impact caused by premature power-on, reducing the risk of hot-plugging of the camera, and improving the safety of the camera.

[0091] In a possible implementation manner, in the initial state where the camera body 100 and the lens 200 are aligned and installed, the corresponding signal contacts 110 on the camera body 100 and the lens 200 are in contact, and the corresponding power contacts 120 between the camera body 100 and the lens 200 have not yet contacted; after rotating the first radian, the corresponding power contacts 120 between the camera body 100 and the lens 200 start to contact, and the corresponding signal contacts 110 between the camera body 100 and the lens 200 are still in contact.

[0092] First, the initial state in the present invention is described. In the embodiment of the present invention, the lens 200 is detachably and rotatably installed on the camera body 100. When the camera body 100 and the lens 200 are aligned and rotated, it can be regarded as the initial state. For example, referring to Figure 7a and Figure 7b , the camera body 100 and the lens 200 can be provided with a bayonet 130. Through the bayonet 130, the camera body 100 and the lens 200 can be tightly connected. Referring to Figure 7c , after the locator 140 on the camera body 100 is aligned with the positioning slot 210 on the lens 200, when one bayonet 130 is inserted into the other and not rotated, this is the initial state. For example, when the lens 200 is inserted into the camera body 100 and the lens 200 has not been rotated, this is the initial state. To illustrate the solution of this embodiment, referring to Figure 7d , in the above embodiment, when the lens 200 is just inserted into the camera, the signal contacts 110 and the power contacts 120 may not be in contact. In this embodiment, as another solution, referring to Figure 7a and Figure 7b, when the lens 200 is just inserted into the camera, it is in the initial state, the signal contacts 110 are in contact, while the power contacts 120 are not in contact. In one example, during the actual installation of the lens 200, first, the lens 200 and the camera body 100 marks can be aligned, such as white dots or lines, which can help the user align the lens 200 and the camera positioning slot 210 when installing the lens 200, and it is in the initial state after the alignment; when continuing the installation from the initial state, only need to slowly rotate the lens 200 in the arrow direction until it locks in place and makes a clicking sound, and the connection is completed. In the embodiment of the present utility model, refer to Figure 7c , in the initial state where the camera body 100 and the lens 200 are aligned and installed, the corresponding signal contacts 110 on the camera body 100 and the lens 200 are in contact, and the corresponding power contacts 120 in the camera body 100 and the lens 200 are not in contact, which can prevent the circuit impact caused by the power supply in advance. After rotating the first radian, the corresponding power contacts 120 in the camera body 100 and the lens 200 start to contact, and the corresponding signal contacts 110 in the camera body 100 and the lens 200 are still in contact, so as to realize the delayed contact of the power contacts 120, prevent the impact caused by early power-on, reduce the risk of hot plugging of the camera, and improve the safety of the camera. It should be noted that when arranging the signal contacts 110 and the power contacts 120 in this way, there may be a difference in the radian between different contacts. The radian between every two adjacent signal contacts 110 can be set to be the same, while the radian between the adjacent signal contacts 110 and the power contacts 120 on the camera body 100 and the lens 200 is set to be different. For example, the radian between the adjacent signal contacts 110 and the power contacts 120 on the camera body 100 is greater than or less than the radian between the adjacent signal contacts 110 and the power contacts 120 on the lens 200, so that when the signal contacts 110 start to contact, due to the difference between the lens 200 and the camera body 100, the power contacts 120 are not in contact, realizing the delayed contact of the power contacts 120.

[0093] In a possible implementation manner, in the initial state where the camera body 100 and the lens 200 are aligned and installed, the corresponding signal contacts 110 on the camera body 100 and the lens 200 are in contact, and the corresponding power contacts 120 in the camera body 100 and the lens 200 are not in contact; the fifth radian d between the centers of the corresponding signal contacts 110 in the camera body 100 and the lens 200 is equal to the sixth radian e between the centers of the corresponding power contacts 120 in the camera body 100 and the lens 200; the sizes of the signal contacts 110 in the camera body 100 and the lens 200 are larger than the sizes of the power contacts 120 in the camera body 100 and the lens 200.

[0094] When implemented through this solution, the radian between every two contacts can be the same, and the size of the signal contacts 110 in the camera body 100 and the lens 200 is larger than the size of the power contacts 120 in the camera body 100 and the lens 200. Thus, in the initial state where the camera body 100 and the lens 200 are aligned and installed, the corresponding signal contacts 110 on the camera body 100 and the lens 200 are in contact, while the corresponding power contacts 120 in the camera body 100 and the lens 200 are not in contact, realizing the delayed contact of the power contacts 120. In the final connection state of this solution, the center of each contact on the lens 200 can correspond to the center of each contact on the camera body 100.

[0095] In some embodiments, the power contacts 120 and the signal contacts 110 in the lens 200 are on the same plane, and the power contacts 120 and the signal contacts 110 in the camera body 100 are also on the same plane. Its top view can be as Figure 8a shown. In this case, the above-mentioned radian relationship can be achieved by adjusting the distance between the power contacts 120 and the signal contacts 110. In other possible embodiments, for example Figure 8b shown, in the lens 200 or the camera body 100, the power contacts 120 are arranged on a first plane; the signal contacts 110 are arranged on a second plane; the first plane and the second plane are not the same plane. Taking the power contacts 120 in the lens 200 being arranged on the first plane, the signal contacts 110 being arranged on the second plane, and the power contacts 120 and the signal contacts 110 in the camera body 100 being on the same plane as an example, as Figure 8c shown, this figure is a top view of the lens 200 and the camera body 100. The power contacts 120 in the lens 200 are on the first plane, while the signal contacts 110 in the lens 200 are on the second plane. There is an angle between the second plane and the first plane. The distance between every two contacts can be the same. At the same time Figure 8c it includes the top view of the camera body 100. All the contacts on the camera body 100 can be on the same plane. Among them, Figure 8c the dotted line on the lens 200 is only for conveniently indicating the angle between the second plane and the first plane, and it is not a real existing structure. The angle between the dotted line and the first plane is the angle between the first plane and the second plane. See Figure 8b, This figure is a front view of the lens 200. It can be seen that due to the angle between the second plane and the first plane, the distance between the power contact 120 and the signal contact 110 in the projection direction becomes smaller compared to the actual distance, while the distance between every two contacts on the camera body 100 is the same. This results in a difference in the arc between the power contact 120 and the signal contact 110 in the camera body 100 and the arc between the power contact 120 and the signal contact 110 in the lens 200. That is, during the clockwise rotation connection process, when the corresponding signal contact 110 starts to connect, the power contact 120 has not yet connected, thus achieving the delayed contact of the power contact 120, reducing the risk of hot plugging of the camera, and improving the safety of the camera. It can be understood that the angle between the first plane and the second plane should be set relatively small to ensure effective contact of the corresponding power contact 120.

[0096] In a possible implementation, the power contacts 120 are connected in series through a resistor; the first end of the power contacts 120 connected in series through the resistor is connected to the first end of the buffer capacitor.

[0097] There are at least two power contacts 120 for the camera interface in the embodiments of the present invention. The power contacts 120 can be connected in series through a resistor, and the size of the resistor can be selected according to the actual situation. In one example, the resistance value between the power contacts 120 can be 10KΩ. In the embodiments of the present invention, the power contacts 120 are connected in series through a resistor to pull up through the resistor. This resistor is a pull-up resistor, and through this pull-up resistor, an additional resistance path can be provided in the circuit to control the direction and magnitude of the current, thereby improving the driving ability and the stability of the signal. Secondly, considering that the size of the pull-up resistor will affect the magnitude of the current and thus affect the performance of the circuit. If the resistance value is too small, the current may be too large, resulting in circuit overload; if the resistance value is too large, the current may be too small, resulting in the circuit not working properly. Therefore, in the embodiments of the present invention, it is preferably to use a 10KΩ resistor for pull-up, which can not only provide an appropriate impedance to control the magnitude of the current, but also will not introduce excessive power consumption and will not have too much impact on the rise and fall times of the signal.

[0098] In a possible implementation, the first end of the power contacts 120 connected in series through a resistor is also connected to one end of the power distribution switch circuit; the other end of the power distribution switch circuit is connected to the lens circuit.

[0099] In the lens of the embodiment of the present utility model, the first ends of at least two power contacts 120 connected in series by resistors are also connected to one end of the power distribution switch circuit; the other end of the power distribution switch circuit is also connected to the lens circuit. When in the camera body 100 of the embodiment of the present utility model, the second ends of at least two power contacts 120 are also connected to the power supply of the camera body 100, so that when the camera body 100 and the lens 200 are connected, a complete circuit is formed through the contacts at the camera body 100 and lens 200 ends. Specifically, this power supply can be VCC (voltage circuit, the positive pole of the DC power supply). Specifically, for the circuit corresponding to the camera body 100 in the embodiment of the present utility model, reference can be made to Figure 9 , Figure 9 which is a circuit diagram of a camera interface in the embodiment of the present utility model. Among them, POGO PIN1 and POGO PIN2 can represent the power contacts 120 in the embodiment of the present utility model. The two power contacts 120 are connected in series through a 10KΩ resistor. One side of POGO PIN1 is also connected to the VCC power supply. In actual use, this VCC power supply can be the power supply in the camera body 100 for supplying power to the lens 200; one side of POGO PIN2 is also connected to a buffer capacitor and a power distribution switch circuit, and the other side of the buffer capacitor is grounded. The other side of the power distribution switch circuit is connected to the lens circuit to supply power to the lens circuit.

[0100] It can be seen that compared with the prior art, since the lens supports hot plugging and unplugging, there will be an alternating contact situation between the contacts on the lens and the contacts of the camera body when the lens is rotated, which may cause circuit impact and even damage the circuit. However, since there are generally 15PINs, if corresponding distinctions are made according to the signal arrangement to avoid the hot plugging and unplugging operation as a whole, the design will be quite complex. Therefore, in the POGO PIN design of the embodiment of the present utility model, the 15 PINs of the POGO PIN are made different. The last two power pins adopt a stepped and smaller size method to achieve a delayed contact relative to other POGO PINs. At the same time, in the hardware circuit design of the embodiment of the present utility model, by connecting a 10K resistor to the last two PINs, the enabling of the power distribution switch is realized after connection, and at the same time, the capacitive buffering of the enabling signal is cooperated to achieve a time delay. When all PINs are in contact, the power-on function of the lens circuit is carried out, thus preventing the impact caused by premature power-on, reducing the hot plugging and unplugging risk of the camera, and improving the safety of the camera.

[0101] To illustrate the solution of the embodiment of the present utility model, the following is described in combination with the power-on process of the lens. Refer to Figure 10 , Figure 10The power-on flowchart of the lens provided by the embodiment of the present invention includes: Step 1, the lens is rotated and inserted, and the lens is rotated and inserted into the camera body along the rotation direction of the rotating bayonet; Step 2, the POGO PINs gradually come into contact. Due to the small size and stepped shape, the last two PINs are delayed in contact. The POGO PINs on the camera body and the POGO PINs on the lens gradually come into contact. Since the size of the power contacts is smaller than that of other contacts and the power contacts and other contacts are arranged in a stepped manner, the power contacts are delayed in contact; Step 3, the last two PINs are connected, and a 10K resistor is pulled up. After the power contacts are connected, a 10KΩ resistor is pulled up; Step 4, the power distribution switch is enabled, and at the same time, the capacitor is buffered and there is a secondary delay. The power distribution switch starts to supply power and is buffered twice through the buffer capacitor; Step 5, the lens circuit is powered on to avoid the risk of hot plugging.

[0102] In the second aspect of the embodiment of the present invention, a lens is provided. The lens includes a plurality of contacts; among the plurality of contacts, there are power contacts and signal contacts;

[0103] During the rotation and installation of the lens, when the corresponding signal contacts between the camera body and the lens start to come into contact, the corresponding power contacts between the camera body and the lens have not come into contact; after rotating the first radian, the corresponding power contacts between the camera body and the lens start to come into contact, and the corresponding signal contacts between the camera body and the lens are still in contact; and / or,

[0104] A buffer capacitor is also provided on the lens. One end of the power contact provided on the lens is connected to the first end of the buffer capacitor, and the second end of the buffer capacitor is grounded.

[0105] In a possible implementation manner, when the camera body and the lens are aligned and the corresponding contacts are not in contact:

[0106] The second radian between the nearest edge of the corresponding signal contact between the camera body and the lens is smaller than the third radian between the nearest edge of the corresponding power contact between the camera body and the lens;

[0107] The fourth radian between the farthest edge of the corresponding signal contact between the camera body and the lens is greater than the third radian.

[0108] In a possible implementation manner, when the camera body and the lens are aligned and the corresponding contacts are not in contact:

[0109] The fifth radian between the center of the corresponding signal contact between the camera body and the lens is equal to the sixth radian between the center of the corresponding power contact between the camera body and the lens;

[0110] The size of the signal contacts in the lens is larger than the size of the power contacts in the lens.

[0111] In a possible implementation, in the initial state where the camera body and the lens are aligned and mounted, the corresponding signal contacts on the camera body and the lens are in contact, and the corresponding power contacts in the camera body and the lens are not in contact; after rotating the first radian, the corresponding power contacts in the camera body and the lens start to contact, and the corresponding signal contacts in the camera body and the lens are still in contact.

[0112] In a possible implementation, in the initial state where the camera body and the lens are aligned and mounted, the corresponding signal contacts on the camera body and the lens are in contact, and the corresponding power contacts in the camera body and the lens are not in contact; the fifth radian between the centers of the corresponding signal contacts in the camera body and the lens is equal to the sixth radian between the centers of the corresponding power contacts in the camera body and the lens; the size of the signal contacts in the lens is larger than the size of the power contacts in the lens.

[0113] It can be seen that through the lens of the embodiment of the present utility model, during the process of rotating and mounting the lens, when the corresponding signal contacts in the camera body and the lens start to contact, the corresponding power contacts in the camera body and the lens are not in contact, and after rotating the first radian, the corresponding power contacts in the camera body and the lens start to contact, and the corresponding signal contacts in the camera body and the lens are still in contact, realizing the delayed contact of the power contacts, thereby delaying the power supply, preventing the impact caused by premature power-on, reducing the risk of hot plugging of the camera, and improving the safety of the camera.

[0114] In a third aspect of the embodiment of the present utility model, a camera body is provided.

[0115] The camera body includes a plurality of contacts; the plurality of contacts include power contacts and signal contacts.

[0116] During the process of rotating and mounting the lens, when the corresponding signal contacts in the camera body and the lens start to contact, the corresponding power contacts in the camera body and the lens are not in contact; after rotating the first radian, the corresponding power contacts in the camera body and the lens start to contact, and the corresponding signal contacts in the camera body and the lens are still in contact.

[0117] In a possible implementation, when the camera body and the lens are aligned and the corresponding contacts are not in contact:

[0118] The second radian between the nearest edges of the corresponding signal contacts in the camera body and the lens is smaller than the third radian between the nearest edges of the corresponding power contacts in the camera body and the lens.

[0119] The fourth radian between the farthest edges of the corresponding signal contacts in the camera body and the lens is larger than the third radian.

[0120] In a possible implementation, when the camera body and the lens are aligned and the corresponding contacts are not in contact:

[0121] The fifth radian between the centers of the corresponding signal contacts in the camera body and the lens is equal to the sixth radian between the centers of the corresponding power contacts in the camera body and the lens;

[0122] The size of the signal contacts in the camera body is larger than the size of the power contacts in the camera body.

[0123] In a possible implementation, in the initial state where the camera body and the lens are aligned and installed, the corresponding signal contacts on the camera body and the lens are in contact, and the corresponding power contacts in the camera body and the lens are not in contact; after rotating the first radian, the corresponding power contacts in the camera body and the lens start to contact, and the corresponding signal contacts in the camera body and the lens are still in contact.

[0124] In a possible implementation, in the initial state where the camera body and the lens are aligned and installed, the corresponding signal contacts on the camera body and the lens are in contact, and the corresponding power contacts in the camera body and the lens are not in contact; the fifth radian between the centers of the corresponding signal contacts in the camera body and the lens is equal to the sixth radian between the centers of the corresponding power contacts in the camera body and the lens; the size of the signal contacts in the camera body is larger than the size of the power contacts in the camera body.

[0125] It can be seen that through the camera body of the embodiment of the present invention, during the process of rotating and installing the lens, when the corresponding signal contacts in the camera body and the lens start to contact, the corresponding power contacts in the camera body and the lens are not in contact, and after rotating the first radian, the corresponding power contacts in the camera body and the lens start to contact, and the corresponding power contacts in the camera body and the lens are still in contact, realizing the delayed contact of the power contacts, thereby delaying the power supply, preventing the impact caused by premature power-on, reducing the risk of hot plugging of the camera, and improving the safety of the camera.

[0126] The above is only the preferred embodiment of the present invention, and is not used to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A camera, characterized in that: The camera comprises a camera body and a lens, wherein the lens is detachably and rotatably mounted on the camera body; The camera body and the lens both include a plurality of contacts; the plurality of contacts include a power contact and a signal contact; During the rotation and installation of the lens, when the camera body starts to contact the corresponding signal contact in the lens, the camera body has not yet contacted the corresponding power contact in the lens; After rotating through a first arc, the camera body begins to contact the corresponding power contact in the lens, and the camera body continues to contact the corresponding signal contact in the lens; and / or, A buffer capacitor is also provided on the lens, one end of a power contact provided on the lens is connected to a first end of the buffer capacitor, and a second end of the buffer capacitor is grounded.

2. The camera according to claim 1, characterized in that When the camera body and the lens are aligned and the corresponding contacts are not in contact: A second arc between the nearest edge of the camera body and the corresponding signal contact in the lens is smaller than a third arc between the nearest edge of the camera body and the corresponding power contact in the lens; A fourth arc between the camera body and the farthest edge of the corresponding signal contact in the lens is greater than the third arc.

3. The camera according to claim 2, characterized in that When the camera body and the lens are aligned and the corresponding contacts are not in contact: A fifth arc between the center of the camera body and the corresponding signal contact in the lens is equal to a sixth arc between the center of the camera body and the corresponding power contact in the lens; The size of the signal contacts in the camera body and the lens is larger than the size of the power contacts in the camera body and the lens.

4. The camera according to claim 1, characterized in that In an initial state where the camera body and the lens are aligned and installed, the corresponding signal contacts on the camera body and the lens are in contact, and the corresponding power contacts in the camera body and the lens are not in contact; After rotating through a first arc, the camera body begins to contact the corresponding power contacts in the lens, and the camera body is still in contact with the corresponding signal contacts in the lens.

5. The camera according to claim 4, characterized in that In the initial state where the camera body and the lens are aligned and installed, the corresponding signal contacts on the camera body and the lens are in contact, and the corresponding power contacts in the camera body and the lens are not in contact; the fifth arc between the centers of the corresponding signal contacts in the camera body and the lens is equal to the sixth arc between the centers of the corresponding power contacts in the camera body and the lens; the size of the signal contacts in the camera body and the lens is larger than the size of the power contacts in the camera body and the lens.

6. A lens, characterized in that: The lens includes a plurality of contacts; the plurality of contacts include a power contact and a signal contact; During the lens rotation installation process, when the camera body starts to contact the corresponding signal contact in the lens, the camera body has not yet contacted the corresponding power contact in the lens; After rotating through a first arc, the camera body begins to contact the corresponding power contact in the lens, and the camera body continues to contact the corresponding signal contact in the lens; and / or, A buffer capacitor is also provided on the lens, one end of a power contact provided on the lens is connected to a first end of the buffer capacitor, and a second end of the buffer capacitor is grounded.

7. The lens according to claim 6, characterized in that: When the camera body and the lens are aligned and the corresponding contacts are not in contact: A second arc between the nearest edge of the camera body and the corresponding signal contact in the lens is smaller than a third arc between the nearest edge of the camera body and the corresponding power contact in the lens; A fourth arc between the camera body and the farthest edge of the corresponding signal contact in the lens is greater than the third arc.

8. The lens according to claim 7, characterized in that: When the camera body and the lens are aligned and the corresponding contacts are not in contact: A fifth arc between the center of the camera body and the corresponding signal contact in the lens is equal to a sixth arc between the center of the camera body and the corresponding power contact in the lens; The size of the signal contact in the lens is larger than the size of the power contact in the lens.

9. The lens according to claim 6, characterized in that: In an initial state where the camera body and the lens are aligned and installed, the corresponding signal contacts on the camera body and the lens are in contact, and the corresponding power contacts in the camera body and the lens are not in contact; After rotating through a first arc, the camera body begins to contact the corresponding power contacts in the lens, and the camera body is still in contact with the corresponding signal contacts in the lens.

10. The lens according to claim 9, characterized in that: In the initial state where the camera body and the lens are aligned and installed, the corresponding signal contacts on the camera body and the lens are in contact, and the camera body and the corresponding power contacts in the lens are not in contact; the fifth arc between the centers of the camera body and the corresponding signal contacts in the lens is equal to the sixth arc between the centers of the camera body and the corresponding power contacts in the lens; the size of the signal contact in the lens is larger than the size of the power contact in the lens.

11. A camera body, characterized in that: The camera body includes a plurality of contacts; the plurality of contacts include a power contact and a signal contact; During the lens rotation installation process, when the camera body starts to contact the corresponding signal contact in the lens, the camera body has not yet contacted the corresponding power contact in the lens; After rotating through a first arc, the camera body begins to contact the corresponding power contacts in the lens, and the camera body is still in contact with the corresponding signal contacts in the lens.

Images