WO2023065168A1 - Procédé de mise au point de lentille, procédé de commande, procédé de calibrage, dispositif et support de stockage - Google Patents

Procédé de mise au point de lentille, procédé de commande, procédé de calibrage, dispositif et support de stockage Download PDF

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Publication number
WO2023065168A1
WO2023065168A1 PCT/CN2021/125064 CN2021125064W WO2023065168A1 WO 2023065168 A1 WO2023065168 A1 WO 2023065168A1 CN 2021125064 W CN2021125064 W CN 2021125064W WO 2023065168 A1 WO2023065168 A1 WO 2023065168A1
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WIPO (PCT)
Prior art keywords
focus
lens
scale
focus position
scale mark
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PCT/CN2021/125064
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English (en)
Chinese (zh)
Inventor
耶方明
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深圳市大疆创新科技有限公司
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Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to PCT/CN2021/125064 priority Critical patent/WO2023065168A1/fr
Priority to CN202180100404.6A priority patent/CN117678231A/zh
Publication of WO2023065168A1 publication Critical patent/WO2023065168A1/fr

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  • the present application relates to the technical field of photographing, and in particular to a lens focusing method, a control method, a scale calibration method, equipment and a storage medium.
  • Lenses with follow focus function include manual lenses and automatic lenses, wherein the manual lens has a zoom ring to achieve manual focus, and the automatic lens has a motor inside the lens to achieve automatic focus.
  • manual lenses have high requirements on the user's operating experience, and automatic lenses rely too much on autofocus based on phase point and contrast detection, which is not suitable for professional film and television shooting.
  • the embodiments of the present application provide a lens focusing method, a control method, a scale calibration method, equipment and a storage medium, so as to meet the shooting requirements of professional film and television level.
  • an embodiment of the present application provides a lens focusing method, the lens includes a driving component and an information receiver; the information receiver is used to receive focusing parameters; the driving component is used to respond to the Focusing parameters, driving the optical elements of the lens to move to change the focus position; wherein, the method includes:
  • the focus-following device includes an operating part for operation by a user, and the operating part is mechanically coupled with the rotating part;
  • the first corresponding relationship is the corresponding relationship between the rotational position of the rotating part of the follow focus device and the focusing parameter of the driving component of the lens;
  • an embodiment of the present application also provides a lens control method, the method including:
  • the scale image area is displayed on the display interface corresponding to the lens, and the scale image area includes a plurality of scale sub-areas, and each of the scale sub-areas is displayed with a scale mark, and the scale marks located in different scale sub-areas are used to indicate different focus positions of said lens;
  • the in-focus position indication mark is displayed in the target scale sub-area.
  • the embodiment of the present application also provides a scale calibration method, the method comprising:
  • each of the marking points includes the rotational position of the rotating part of the motor of the focus device and the corresponding focus position of the lens at the rotational position;
  • the at least two marking points determine the corresponding relationship between the rotational position of the rotating part of the motor of the focus-following device and the in-focus position
  • the scale image area of the lens is generated according to the corresponding relationship, the scale image area includes a plurality of scale sub-areas, each of the scale sub-areas shows a scale mark, and the scale sub-areas located in different scale sub-areas
  • the scale marks are used to indicate different focusing positions of the lens.
  • the embodiment of the present application further provides a control device, the control device includes a processor and a memory;
  • the memory is used to store computer programs
  • the processor is configured to execute the computer program and, when executing the computer program, implement the lens focusing method according to any one of the embodiments of the present application, or implement the method as provided in the embodiment of the present application.
  • embodiments of the present application further provide a focus-following device, the focus-following device comprising:
  • An operating part used for the user to operate to input a focus control signal, the operating part is mechanically coupled with the rotating part of the motor, and can drive the rotating part of the motor to rotate together;
  • the drive circuit is connected to the motor and is used to drive the motor to rotate;
  • a main control circuit the main control circuit is connected to the drive circuit, and the main control circuit is used to control the rotation of the rotating part of the motor through the drive circuit;
  • the main control circuit includes a processor and a memory
  • the memory is used to store computer programs
  • the processor is configured to execute the computer program and, when executing the computer program, implement the lens focusing method according to any one of the embodiments of the present application, or implement the method as provided in the embodiment of the present application.
  • an embodiment of the present application further provides a carrying device, the carrying device includes a carrying part, the carrying part is used to carry a lens, and the carrying device further includes a processor and a memory;
  • the memory is used to store computer programs
  • the processor is configured to execute the computer program and, when executing the computer program, implement the lens focusing method according to any one of the embodiments of the present application, or implement the method as provided in the embodiment of the present application.
  • the embodiments of the present application further provide a follow-focus system
  • the follow-focus system includes a lens and the follow-focus device according to any one of the embodiments of the present application, and the follow-focus device is used to control
  • the lens follows focus
  • the lens includes a manual lens or an automatic lens.
  • the embodiment of the present application also provides another follow-focus system
  • the follow-focus system includes a lens, a carrying device, and any one of the follow-focus equipment provided in the embodiment of the present application
  • the carrying device includes a carrying part , the carrying part is used to carry the lens, the follow-focus device is used to control the focus of the lens, and the lens includes a manual lens or an automatic lens.
  • the embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor realizes the implementation of the present application.
  • the lens focusing method, lens control method, scale calibration method, control device, follow focus equipment, carrying device, follow focus system and storage medium disclosed in the embodiments of the present application can realize the application of automatic lenses and manual lenses in film and television Level shooting requirements, thereby improving user experience.
  • Fig. 1 is a schematic structural diagram of a follow-focus device provided by an embodiment of the present application
  • Fig. 2 is a schematic diagram of a circuit structure of a follow-focus device provided by an embodiment of the present application
  • Fig. 3 is a schematic structural diagram of the motor part of the focus device provided by the embodiment of the present application.
  • Fig. 4 is a schematic cross-sectional structure diagram along the A-A direction of Fig. 3;
  • Fig. 5 is a schematic diagram of a circuit structure of an automatic lens provided by an embodiment of the present application.
  • Fig. 6 is a schematic flowchart of the steps of a scale calibration method provided in the embodiment of the present application.
  • Fig. 7 is a schematic diagram of a display interface provided by an embodiment of the present application.
  • Fig. 8 is a schematic diagram of another display interface provided by the embodiment of the present application.
  • Fig. 9 is a schematic diagram of another display interface provided by the embodiment of the present application.
  • Fig. 10 is a schematic diagram of the display effect of the display interface provided by the embodiment of the present application.
  • FIG. 11 is a schematic flowchart of the steps of the method for determining the first correspondence relationship provided by the embodiment of the present application.
  • FIG. 12 is a schematic flow chart of the steps of the second correspondence determination method provided by the embodiment of the present application.
  • FIG. 13 is a schematic flowchart of the steps of a lens focusing method provided by an embodiment of the present application.
  • Fig. 14 is a schematic flowchart of the steps of a lens control method provided by an embodiment of the present application.
  • Fig. 15 is a schematic block diagram of a control device provided by an embodiment of the present application.
  • Fig. 16 is a schematic block diagram of a follow-focus device provided by an embodiment of the present application.
  • Fig. 17 is a schematic block diagram of a carrying device provided by an embodiment of the present application.
  • Lenses with follow-focus function include manual lenses and automatic lenses.
  • the manual lens has a zoom ring to achieve manual focus
  • the automatic lens has a motor inside to achieve automatic focus.
  • the manual lens has high requirements on the user's operating experience, and the automatic lens transition relies on the automatic focus based on phase point and contrast detection, which is not suitable for professional film and television shooting.
  • the embodiment of the present application provides a lens focusing method, a lens control method, a scale calibration method, equipment and a storage medium, so as to meet the shooting requirements of the film and television level.
  • FIG. 1 shows the structure of a follow-focus device 100 provided by an embodiment of the present application.
  • the focus motor 20 is connected in communication, and the remote controller 10 is used to control the rotation of the focus motor 20 to drive the movement of the optical elements of the lens 30.
  • the focus lens of the lens 30 can be driven to focus on the subject, and the subject can also be called the shooting target.
  • the remote controller 10 and the focus motor 20 are connected in communication, specifically, for example, a wireless communication connection, or a wired communication connection, of course. Specifically as shown in FIG. 1 , the remote controller 10 and the focus motor 20 are connected through a connecting wire.
  • the remote controller 10 and the focus motor 20 shown in FIG. 1 do not constitute a limitation on the specific structural form of the focus device 100 provided in this application, that is, the remote controller 10 and the focus motor 20 may be separated Design, specifically as shown in Figure 1, of course, can also be an integrated design, the integrated design is specifically that the remote control 10 and the focus motor 20 are set together, for example, they can be set in the same casing or fixed together but detachable.
  • the focus device 100 does not include the focus motor 20, but communicates with the focus motor 20 to control the focus motor 20, that is, it can be understood as a focus motor 20 is an independent device, and the follow-focus device 100 only includes the remote controller 10 .
  • the focus motor 20 includes a gear 21 , which is used to mesh with a focus ring 31 on the lens 30 , and the focus ring 31 is fixedly arranged on the optical element of the lens 30 .
  • the focus motor 20 is mechanically coupled with the gear 21 to drive the gear 21 to rotate, and the gear 21 rotates to drive the focus ring 31 to rotate, and the rotation of the focus ring 31 will drive the focus lens of the lens 30 to move, so as to realize the tracking of the subject out of focus.
  • both the lens 30 and the focus motor 20 are disposed on a carrying device, wherein the carrying device includes a carrying portion for placing the lens 30 .
  • the carrying device may include a camera bracket, an airborne pan-tilt or a handheld pan-tilt, and the like.
  • the carrying device is further provided with a display for displaying information, such as for displaying captured images, or for displaying a scale and the like.
  • the remote control 10 can be independent of the carrying device. In other embodiments, the remote control 10 can also be integrated into the carrying device to facilitate user operation. For example, the remote control 10 can be integrated into the handle of the handheld pan/tilt.
  • both the focus motor 20 and the lens 30 can be arranged on the camera bracket 40 , the camera bracket 40 is a kind of carrying device, and the gear 21 of the focus motor 20 and the focus ring on the lens 30 31 are toothed and connected, and are used to drive the focus ring 31 to rotate.
  • the lens 30 shown in FIG. 1 needs to be driven by the focus motor 20 to achieve focusing, that is, the lens 30 shown in FIG. 1 is a manual lens.
  • the lens 30 may also include an automatic lens, that is, the lens 30 may include a driving component, and the driving component drives an optical element of the lens 30 to move to achieve focusing on the subject.
  • the driving component may specifically be a motor assembly.
  • the follow-focus device 100 is communicatively connected with the lens 30, the communication connection includes a direct communication connection or an indirect communication connection, and the direct communication connection between the focus-following device 100 and the lens 30 includes a wireless communication connection or a wired communication connection.
  • the follow-focus device 100 is indirect communicatively connected with the lens 30 , for example, the follow-focus device 100 is communicatively connected with a carrying device, and the carrying device is then communicatively connected with the lens 30 .
  • the carrying device includes a carrying part for accommodating the lens 30, and a contact is provided on the carrying part, and when the lens 30 is set on the carrying part, the lens 30 is connected to the carrying device through the contact.
  • the carrying device is also communicatively connected with the focus device (remote controller 10) to obtain the focus control signal of the focus device, and generates a lens control signal according to the focus control signal and sends it to the lens, so that the lens is controlled according to the lens control signal.
  • the driving part drives the focus lens to move to achieve follow focus.
  • FIG. 1 in combination with FIG. 2 as an example to introduce the specific structure and working principle of the follow focus device 100 provided by the present application in detail.
  • FIG. 2 shows the circuit structure of the focus device 100 .
  • the follow-focus device 100 includes an operating part 11, a motor 12, a drive circuit 13 and a main control circuit 14, wherein the motor 12 includes a rotor and a coil, and specifically the remote controller 10 includes an operating part 11, a motor 12, The driving circuit 13 and the main control circuit 14.
  • the operating part 11 is used for user operation to input a focus control signal. For example, when the user rotates the operating part 11, a focus control signal is generated, and the remote controller 10 can drive the optical elements of the lens 30 through the focus motor 20 according to the focus control signal. Movement achieves focus.
  • the focus control signal may specifically be a pulse signal.
  • a pulse signal controls the focus motor 20 to drive the focus lens of the lens 30 to move a step.
  • the focus control signal includes the number of pulse signals and the user turning the operating part 11 It is related to the rotation angle, that is, it is related to the rotation position of the rotating part of the motor 12. The larger the rotation position is, the more the number of pulse signals is included, and the longer the moving distance of the focusing lens of the driving lens 30 is.
  • the lens 30 is an automatic lens, its control method is similar to that of the focus motor 30, and it is also controlled according to the pulse signal. Since the focus motor is different from the motor inside the lens, the length of the forward step corresponding to the two may be different.
  • the operating part 11 is mechanically coupled with the rotating part (such as the rotor) of the motor 12, and can drive the rotating part of the motor 12 to rotate together, and give the motor 12 a torque, so that the user can detect the operating part 11 through the motor 12; When the rotating part of the motor 12 rotates, it will also drive the operation part 11 to move, thereby providing feedback to the user through the operation part 11 .
  • the rotating part such as the rotor
  • the rotating part of the motor 12 will also drive the operation part 11 to move when it rotates, and the corresponding operation feeling can be simulated and fed back to the operation part 11.
  • the operation feeling can include a damping operation feeling, Certainly, other types of operation senses may also be included, which are not limited here.
  • the operating component 11 is, for example, an apron 110, which is mechanically coupled with the rotating part of the motor 12, such as through a shaft connection or through a gear connection, etc. , when the user rotates the apron 110, the apron 110 can drive the rotating part of the motor 12 to rotate together, and at the same time, the rotating part of the motor 12 will also drive the apron 110 to move.
  • an apron 110 which is mechanically coupled with the rotating part of the motor 12, such as through a shaft connection or through a gear connection, etc.
  • the operating part 11 of the focus device 100 can also be provided with damping grease, which is used to provide a damping operation feeling, and the damping grease can be used to realize the damping operation feeling without using the motor 12 of the focus device 100. Simulates the feel of this damped operation.
  • the remote controller 10 further includes a circuit board 15 on which a driving circuit 13 and/or a main control circuit 14 are disposed.
  • the drive circuit 13 can be arranged on the circuit board 15, and the circuit board 15 can also be provided with a position sensor, such as a Hall sensor 160, which cooperates with the magnetic ring 16 arranged on the motor 12 to detect the position of the rotating part of the motor 12.
  • Angular position information that is, the rotational position of the rotating part of the motor 12 .
  • the motor 12 may include a permanent magnet synchronous motor or a DC motor, and of course may also be other types of motors, which are not limited here. As shown in FIG. 4 , the motor 12 includes a rotating part 121 and a coil 122 .
  • the driving circuit 13 is connected with the motor 12 to drive the rotating part 121 of the motor 12 to rotate.
  • the driving circuit 13 can adopt a three-phase inverter bridge circuit, and drive the rotating part 121 of the motor 12 to rotate through PWM signals.
  • the main control circuit 14 is connected with the drive circuit 13, and is used to complete the output torque control and target closed-loop control of the motor 12 according to the angular position information of the rotating part 121 of the motor 12 and the electrical parameters of the coil 122 of the motor 12.
  • the main control circuit 14 A processor and memory may be included, and the electrical parameters of the coils of the motor 12 include current and/or voltage.
  • a distance measuring device can also be set on the lens 30 for measuring the distance from the subject to the lens 30, and of course the distance measuring device can also be set at other positions, such as setting the distance measuring device on the camera bracket 40 , that is, the carrying device can be set.
  • the distance measuring device is used to measure the object distance from the subject to the lens.
  • the distance measuring device may specifically be, for example, a time of flight (Time of flight, TOF) sensor, and of course other distance measuring devices, such as a laser distance measuring device or a binocular camera, etc. may also be used.
  • TOF Time of flight
  • other distance measuring devices such as a laser distance measuring device or a binocular camera, etc.
  • the rotational position of the rotating part 121 of the motor 12 is obtained.
  • the rotational position is specifically angular position information, which can be obtained by using a position sensor, or obtained by software calculation without using a position sensor.
  • the remote controller 10 further includes a position sensor, which is used to detect the angular position information of the rotating part of the motor 12 and send the angular position information to the main control circuit 14 .
  • the position sensor includes at least one of a magnetic ring Hall sensor, a photoelectric encoder, and a magnetic encoder.
  • a magnetic ring position Hall sensor is used, specifically as shown in FIG.
  • the ring 16 detects angular position information of the rotating portion of the motor 12 .
  • the Hall sensor may be a single-axis Hall sensor or a three-axis Hall sensor, and the number of the Hall sensors is not limited, and may be one or more.
  • the angle position information can be obtained by software calculation.
  • the main control circuit 14 can specifically obtain the current and voltage of the motor 12 when it is working, and calculate the angle position information of the rotating part of the motor 12 according to the current and voltage.
  • FIG. 5 shows a circuit structure of an automatic lens, which includes an information receiver 301 and a driving component 302 .
  • the information receiver 301 is used to receive the focusing parameter and send it to the driving part 302 .
  • the driving component 302 is used to drive the optical element (focus lens) of the automatic lens to move in response to the focusing parameters to change the focusing position.
  • the information receiver 301 can analyze the focus control signal received from the focus equipment, or analyze the drive control signal sent by the carrying device to obtain the corresponding focus parameters, wherein the drive control signal can be focus control signal, or generated according to the focus control signal.
  • the information receiver 301 does not have the resolution ability but is only a connecting wire, which connects the contact of the driving part 302 and the lens 30.
  • the lens 30 When the lens 30 is installed on the carrying device, the contact of the lens 30 and the carrying part The contacts are connected.
  • the focusing parameter obtained by the carrying device according to the focus control signal is sent to the driving part 302, so that the driving part 302 responds to the focusing parameter and drives the optical element of the automatic lens to move to change the focusing position.
  • an embodiment of the present application also provides a follow-focus system, which includes: a carrying device and a focus-following device. Mount the lens.
  • the focus-following device can also be set on the carrying device, or it can be set independently on the carrying device, and the focus-following device can implement any lens adjustment method or control method provided in the embodiments of the present application.
  • the remote control of the current follow focus equipment uses a manual pen to mark the corresponding distance on each rotation position, that is, the distance scale is marked, so that the user can refer to the distance scale when using the remote control to control the focus.
  • the user not only has to watch the captured image displayed on the monitor, but also refer to the scale, so the operation is inconvenient, and at the same time, the structure of the entire follow focus system is relatively complicated, and the operation is relatively cumbersome.
  • the distance scale 1 corresponding to the lens 1 and the distance scale 2 corresponding to the lens 2 when the user uses the lens 1, the rotating operation part rotates at a certain position on the distance scale 1, such as 1/2 turn , can make lens 1 take a clear image of a subject located at 1m, then it is also desirable to rotate 1/2 turn when using lens 2, so that lens 2 can also take a clear image of a subject located at 1m.
  • the lens 2 due to the difference between lens 1 and lens 2, when the operating part is rotated 1/2 turn, the lens 2 cannot make a clear image of the subject located at 1m, so the operation feel of lens 1 and lens 2 is not the same. Not uniform, thus affecting user manipulation.
  • an embodiment of the present application provides a calibration method for a scale, which can be applied to a terminal device, and of course can also be applied to a focus device or a carrying device.
  • the calibration method specifically includes steps S101 to S103:
  • each of the marker points includes a rotational position of a rotating part of a motor of a follow-focus device and a corresponding in-focus position of a lens at the rotational position.
  • the first rotational position of the rotating part of the motor of the follow-focus device and the first focus position of the lens at the first rotational position can be acquired, wherein the first rotational position enables the lens to Focusing at infinity; and obtaining a second rotational position of a rotating part of the motor of the focus device and a second in-focus position corresponding to the lens at the second rotational position, wherein the second rotational position enables The lens focuses on the target object in the shooting environment.
  • the focus position of the lens can be determined according to the object distance from the measured object to the lens.
  • the object distance from the measured object to the lens can be measured by a distance measuring device, and the distance measuring device can be arranged on the carrying device or the lens.
  • the first rotational position and the first in-focus position constitute a marker point 1
  • the second rotational position and the second in-focus position constitute a marker point 2
  • each marker point includes the rotational position of the rotating part of the motor of the follow-focus device and the corresponding in-focus position of the lens at this rotational position. In order to accurately determine the corresponding relationship between the rotational position of the rotating part of the motor of the focus-following device and the in-focus position.
  • the scale image area of the lens can be generated by using the corresponding relationship, and the scale image area can be displayed, so that the user can watch the scale during focus control, which is convenient for the user to operate.
  • the scale image area includes a plurality of scale sub-areas, and each scale sub-area displays a scale mark, and the scale marks located in different scale sub-areas are used to indicate different focusing positions of the lens. Since it is convenient for the user to watch the photographed image displayed on the display, and at the same time refer to the scale to perform the focus operation, the photographing experience of the user is improved.
  • FIG. 7 shows a display interface provided by an embodiment of the present application.
  • the display interface 500 includes an image display area 51, and the image display area 51 is used to display captured images, such as displayed
  • the image includes a detected object, which is specifically a pedestrian 501 .
  • the display interface 500 also displays a scale image area 52, which is generated according to the corresponding relationship between the rotational position of the rotating part of the motor of the follow-focus device and the in-focus position.
  • the scale image area 52 includes a plurality of scale sub-areas 521 , and each of the scale sub-areas 521 displays a scale mark, and the scale marks located in different scale sub-areas 52 are used to indicate different focusing positions of the lens. Different focus positions match different object distances, that is, one focus position can form a clear image of the subject at the corresponding object distance, so the object distance can be used to represent the focus position of the lens.
  • the scale markings located in different scale sub-areas 52 are 3, 3.6, 4, 4.6, 5, 5.6, 6 and 7 respectively, and the unit is feet, specifically corresponding to different object distances , since the in-focus position can be expressed by the object distance, it can be used to indicate different focus positions of the lens.
  • each of the scale marks is used to indicate a focus position of the lens
  • the multiple scale marks include: adjacent first scale marks and second scale marks, and, Adjacent third scale mark and fourth scale mark; wherein, the in-focus positions indicated by the first scale mark and the second scale mark differ by the first focus position difference, and the third scale mark and The in-focus position indicated by the fourth scale marks differs by a second in-focus position difference, the first in-focus position difference is the same as the second in-focus position difference, but the first in-focus position difference
  • the pixel distance corresponding to the value on the display interface is different from the pixel distance corresponding to the first focal position difference value on the display interface.
  • the adjacent first scale mark and the second scale mark are respectively 3 and 3.6
  • the adjacent third scale mark and the fourth scale mark are respectively 4 and 4.6
  • the first The difference between the in-focus positions indicated by the first scale mark and the second scale mark is 0.6
  • the difference between the focus positions indicated by the third scale mark and the fourth scale mark is 0.6
  • the difference in focus position is 0.6.
  • the pixel distance corresponding to the first focus position difference on the display interface is different from the pixel distance corresponding to the first focus position difference on the display interface.
  • the scale marks displayed in the image area of the scale can be non-uniformly distributed, and the non-uniform distribution corresponds to the actual adjustment of the focus position of the lens, so it is more convenient for the user to follow the focus control of the lens by referring to the scale.
  • each of the multiple scale marks is used to indicate a focus position of the lens
  • the multiple scale marks include: a first scale mark, a second scale mark, The third scale mark and the fourth scale mark, the distance between the first scale mark and the second scale mark on the display interface is the first pixel distance, and the third scale mark and the fourth scale mark are at The display interface is separated by a second pixel distance, the in-focus position indicated by the first scale mark and the second scale mark differ by a first focus position difference, the third scale mark and the fourth scale mark The in-focus position indicated by the scale mark is different from the second in-focus position difference; wherein, the first ratio of the first in-focus position difference to the first pixel distance is different from the second in-focus position difference a second ratio to the second pixel distance.
  • the scale marks displayed in the image area of the scale can be non-uniformly distributed, and the non-uniform distribution corresponds to the actual adjustment of the focus position of the lens, so it is more convenient for the user to follow the focus control of the lens by referring to the scale.
  • the distance between the first scale mark and the second scale mark on the display interface is a first pixel distance
  • the first pixel distance is positively related to the target rotation mileage of the operating part of the focus device
  • the The target rotation mileage is the corresponding rotation of the operating part of the follow focus device when the lens is adjusted from the first in-focus position corresponding to the first scale mark to the second in-focus position corresponding to the second scale mark mileage. Therefore, it can be ensured that the user rotates the same mileage every time the operating part is turned, and the change position of the in-focus position indicator displayed in the image area of the scale is the same, and the change position of the indicator is specifically moved by the pixel distance on the display interface.
  • first scale mark, the second scale mark, the third scale mark and the fourth scale mark may be any scale marks among the multiple scale marks.
  • the scale sub-area displays the in-focus position indicator. In this way, the user can observe the in-focus position indicator and know the current in-focus position of the lens, so as to control the lens to follow focus.
  • the in-focus position indicator when determining the in-focus position that matches the object distance, such as 4 feet, the in-focus position indicator may specifically be that the scale marks corresponding to 4 feet have different display modes, such as The scale mark corresponding to 4 feet is displayed in a different color from other scale marks, for example, the scale mark corresponding to 4 feet is displayed in red.
  • the in-focus position indicator 522 may be a straight line with an arrow, and the arrow of the line points to the scale mark in the scale sub-area, indicating the current in-focus position of the lens.
  • the subject mark 523 is displayed in the scale sub-area corresponding to the in-focus position matching the object distance, and the subject mark 523 is used to indicate the corresponding in-focus There is a subject at the location.
  • the object identification 523 includes a point cloud identification.
  • the straight line with the arrow can also cover the subject mark 523, so that the user can more intuitively determine that there is a subject at the corresponding in-focus position.
  • the display interface 500 includes an image display area 51, the image display area 51 is used to display the image captured by the lens, and the scale image area 52 is located in the image display area 51 side.
  • the display interface 500 also includes a focus position adjustment control image area 53, and the user can adjust the focus position of the lens by operating the focus position adjustment control image area 53, specifically in response to The user adjusts the manipulation gesture of the image area of the control at the focus position to determine the adjustment amount of the focus position; and adjusts the focus position of the lens according to the adjustment amount. This makes it convenient for the user to control the focus position of the lens to follow focus when not using the follow focus device.
  • FIG. 10 shows an effect diagram of the actual use of the display interface design provided by the embodiment of the present application.
  • the compensation coefficient corresponding to each lens in order to unify the scales and operating feel of different lenses, can also be obtained, wherein the compensation coefficients corresponding to different lenses are different;
  • the scale image area of the above-mentioned lens, wherein the compensation coefficient can make different lenses correspond to the same scale image area, and the multiple scale sub-areas included in the same scale image area and the displayed scale marks are all the same.
  • multiple different lenses can have the same scale image area, although the focal positions of the lenses are different.
  • the scale image areas corresponding to multiple different lenses are shown in the interface shown in Figure 7. 500 displayed scale image area.
  • the compensation coefficient can also make the rotation position of the rotating part of the motor of the follow focus device the same when the different lenses change the same focus position.
  • the operating part of the follow-focus device when lens 1 changes from a focus position of 1 foot to a focus position of 2 feet, the operating part of the follow-focus device needs to be turned by 1/2 turn, and lens 2 needs to be changed from a focus position of 1 foot
  • the in-focus position is 2 feet
  • the operating part of the follow-focus device needs to be rotated for one circle, and the compensation system can realize that the lens 2 can change from the in-focus position of 1 foot to the focus position of 2 feet.
  • the operating part of the device turns 1/2 turn. In this way, the operation feel of different lenses is unified.
  • the compensation coefficient of each lens is relative to the target lens, that is, the operation feel and scale of the target lens are unified through the compensation coefficient.
  • the target lens may be the first lens calibrated by the user, or the lens provided by the manufacturer, and the compensation coefficient of the target lens is 1, which may also be understood as the target lens does not need to be compensated.
  • the first corresponding relationship is the adjustment between the rotational position of the rotating part of the focus device and the driving part of the lens.
  • the corresponding relationship of focal parameters is mainly for automatic lenses.
  • the determination method specifically includes steps S201 to S203:
  • both the first mapping relationship and the second mapping relationship include the focus position of the lens
  • the first mapping relationship and the second mapping relationship can be used to determine the first corresponding relationship according to the common quantity (focus position).
  • the relationship is the corresponding relationship between the rotational position of the rotational part of the focus-following device and the focusing parameter of the driving part of the lens.
  • the first correspondence may be saved on the focus-focusing device or the carrying device, or in a preset server.
  • the in-focus position of the lens may be determined according to the object distance from the measured object to the lens.
  • the object distance from the measured object to the lens is measured by a distance measuring device, and the distance measuring device is arranged on the carrying device or the lens.
  • each focal position of the lens can form a clear image of the subject at a corresponding object distance, that is, it can be understood that the subject at different object distances will correspond to different focal points in the lens
  • Each focus position of the lens matches an object distance of the subject.
  • the focus position of the lens can be represented by the object distance.
  • the rotational position of the rotating part of the motor of the follow-focus device can drive the optical element to move through the driving part of the lens to change the focal position of the lens
  • the focal position of the lens and the rotational position have a linear relationship
  • the object distance can be used to indicate the focal position of the lens. Therefore, following the first mapping relationship between the rotational position of the rotating part of the motor of the focus device and the focus position of the lens, at least two first marking points can be obtained, wherein each of the first marking points includes The first mapping relationship is determined according to the rotational position of the rotating part of the motor of the follow-focus device and the corresponding object distance at the rotational position according to at least two first marking points. Certainly, in order to make the first mapping relationship more accurate, more first marking points may be acquired to obtain the first mapping relationship.
  • the first rotational position of the rotating part of the motor of the follow-focus device and the corresponding first object distance at the first rotational position can be obtained, wherein the first rotational position can make the lens Focusing at infinity, when the lens is focusing at infinity, the first object distance is infinity; and obtaining the second rotational position of the rotating part of the motor of the focus device and the corresponding A second object distance, wherein the second rotational position enables the lens to focus on a target object to be measured in a viewing range, and the second object distance is an object distance from the target object to be measured to the lens;
  • the first mapping relationship is determined, that is, the first rotation position and the first object distance form a first The marking point, the second rotational position and the second object distance form another first marking point, and the first mapping relationship is determined according to the two first marking points.
  • the first rotation position is A1, and the first rotation position A1 can make the lens focus at infinity, then the first object distance d1 is infinity; the second rotation position is A2, and the second rotation position A2 can make the lens focus
  • the object distance from the target object to the lens is the second object distance d2, which can be measured by a distance measuring device.
  • the first rotation position and the first object distance form a first marking point (A1, D1)
  • the second mapping relationship is determined in the same manner as the first mapping relationship, specifically, at least two second marking points are obtained, and the first mapping relationship is determined according to the at least two second marking points.
  • the first focusing parameter of the driving component of the lens and the corresponding third object distance under the first focusing parameter can be acquired, wherein the first focusing parameter can enable the The lens is focused at infinity, and when the lens is focused at infinity, the third object distance is infinity; the second focusing parameter of the driving component of the lens and the corresponding The fourth object distance, wherein the second focusing parameter enables the lens to focus on the target object in the viewing range, and the fourth object distance is the object distance from the target object to the lens ; Determine the second mapping relationship according to the first focusing parameter and the third object distance, and the second focusing parameter and the fourth object distance.
  • the first focusing parameter is B1, and the first focusing parameter is B1, which can make the lens focus at infinity, then the third object distance d3 is infinity;
  • the second focusing parameter is B2, and the second focusing parameter B2 can make the lens focus on the target object in the viewfinder range, and the object distance from the target object to the lens is the fourth object distance d4, which can be measured by a distance measuring device.
  • the first focusing parameter and the third object distance form a second marking point (B1, D3)
  • a method for determining a second corresponding relationship is also provided.
  • the second corresponding relationship is the rotational position of the rotating part of the focus device and the focus of the focus motor.
  • the corresponding relationship of parameters is mainly for manual lenses.
  • the determination method specifically includes steps S301 to S303:
  • the second correspondence relationship can be determined by using the first mapping relationship and the third mapping relationship according to the common quantity (focus position).
  • the relationship is the corresponding relationship between the rotational position of the rotating part of the focus-following device and the focusing parameters of the focus-focus motor.
  • the second correspondence may be saved on the focus-focusing device or the carrying device, or in a preset server.
  • the in-focus position of the lens can be determined according to the object distance from the measured object to the lens.
  • the object distance from the measured object to the lens can be obtained by measuring a distance measuring device, and the distance measuring device is arranged on the carrying device or the lens.
  • At least two third marking points may be obtained, wherein each of the third marking points includes a focusing parameter of the focus motor and a corresponding object distance under the focusing parameter;
  • the third mapping relationship is determined according to the at least two third marking points.
  • obtaining the first focusing parameter of the focus motor and the fifth object distance corresponding to the first focusing parameter wherein the first focusing parameter can make the lens focus at Infinity, when the lens is focused at infinity, the fifth object distance is infinity; obtain the second focusing parameter of the follow-focus motor and the sixth object distance corresponding to the second focusing parameter , wherein, the second focusing parameter enables the lens to focus on the target object in the viewing range, and the sixth object distance is the object distance from the target object to the lens; according to the The first focusing parameter and the fifth object distance of the focus motor, and the second focus parameter and the sixth object distance of the focus motor determine the third mapping relationship, specifically, the first focus parameter and The fifth object distance constitutes a third marking point, and the second focusing parameter and the sixth object distance form another third marking point, so the third mapping relationship can be determined according to these two third marking points.
  • the determination manner of the second correspondence is the same as that of the first correspondence, and thus will not be described in detail here. Because the focusing parameter of the driving part and the focusing parameter of the follow-focus motor are both used to drive the movement of the optical element of the lens to change the focusing position of the lens.
  • FIG. 13 shows a flow of steps of a lens focusing method provided by the present application, and the method can be applied to any one of the following focus devices or carrying devices provided in the embodiments of the present application.
  • the carrying device includes a carrying portion, and the carrying portion is used for carrying the lens.
  • the lens has an automatic follow-focus function, that is, the lens includes a driving component and an information receiver, the information receiver is used to receive focusing parameters, and the driving component is used to drive the focus of the lens in response to the focusing parameters.
  • the optical element moves to change the focus position, and this lens is an automatic lens.
  • the follow-focus device can provide the follow-focus device described in any one of the above-mentioned embodiments, the follow-focus device includes a motor and an operating part, and the operating part is used for the user to operate and input a follow-focus control signal, and the operation part and the motor The rotating parts are mechanically coupled.
  • the lens module The motor inside will drive the focusing lens to move from the bottom (closer to the image sensor) to the top.
  • the image sensor will conduct a comprehensive detection of the entire scene in the depth direction, and continuously record contrast values such as contrast, and then After finding the position with the highest contrast, the lens moved to the top will return to this position to complete the final focus, that is, automatic focus is realized. Therefore, it cannot meet the shooting needs of the film industry.
  • the automatic lens is controlled by the focus device, and then the focusing method provided by the embodiment of the application is implemented, so that the automatic lens can meet the basic needs of manual focus in the film and television industry, and it is convenient for the user to Automatic lenses are used in film and television shooting in a way that meets the needs of the film and television industry.
  • the advantages of automatic lenses are combined with the needs of the film industry to produce a follow-focus lens solution that is easy to use, simple to maintain, and low in cost.
  • the lens focusing method includes steps S401 to S404.
  • the user uses the follow-focus device to control the lens to achieve follow-focus shooting, he can operate the operating part of the follow-focus device to realize the control of the lens. For example, when the user rotates the operating part of the focus device, since the operation part is mechanically coupled with the motor of the focus device, the operating part will drive the rotating part of the motor to rotate, thus the angular position of the rotating part of the motor can be detected information, which is the current rotation position.
  • the current rotation position may be a rotation variable corresponding to the rotation part of the motor, for example, an angle corresponding to 1 rotation or 1/2 rotation. Of course, it can also be the corresponding angular position of the rotating part of the motor.
  • a first correspondence may also be obtained, the first correspondence being the relationship between the rotational position of the rotational part of the motor of the focus device and the focusing parameter of the driving part of the lens Correspondence.
  • the first corresponding relationship may be pre-stored in the focus-focusing device or the carrying device, and after obtaining the current rotational position of the rotating part of the motor of the focus-focusing device, the first corresponding relationship may be obtained from the focus-focusing device or the carrying device .
  • the first corresponding relationship may also pre-store a database corresponding to a preset server, such as a preset cloud server, after obtaining the current rotational position of the rotating part of the motor of the focus device, you may The first corresponding relationship is acquired from a preset cloud server.
  • a preset server such as a preset cloud server
  • the focusing parameter corresponding to the current rotational position is determined according to the current rotational position by using the first correspondence relationship, that is, the target focusing parameter of the driving component of the lens.
  • the current rotational position may also be sent to the cloud server, so that the cloud server determines the target focusing parameter corresponding to the current rotational position based on the first correspondence, and feeds back the determined target focusing parameter.
  • the target focusing parameter is sent to the information receiver of the lens, so that the driving part of the lens controls the movement of the optical element of the lens driven by the driving part according to the target focusing parameter, and then adjusts the lens Focusing position of the camera, so that the lens with automatic focus function has manual focus function, which can meet the shooting needs of the film and television industry.
  • the lens can be placed on the carrying device, and the information receiver of the lens establishes a communication connection with the carrying device.
  • the target focusing parameters can be sent from the carrying device to the information receiver.
  • the carrying device includes a carrying part, and the carrying part is provided with contacts; the lens is disposed on the carrying part, and the information receiver of the lens is communicatively connected with the carrying device through the contacts.
  • the focusing device is communicatively connected with the carrying device, so the carrying device can obtain the current rotational position of the rotating part of the focusing device, and obtain the target focusing parameter based on the first corresponding relationship .
  • the focus device obtains the target focus parameters based on the current rotation position and based on the first corresponding relationship, and sends the target focus parameters to the carrying device, or directly sends the target focus parameters to the information receiver.
  • the following focus device obtains the target focusing parameter based on the current rotation position and based on the first corresponding relationship, or the follow focus device sends the current rotation position to the terminal device, and the terminal device according to the current rotation position position, and obtain the target focusing parameter based on the first corresponding relationship, and send the target focusing parameter to the focus-following device.
  • the following focus device and the information receiver of the lens can be connected based on wired and/or wireless communication, so the following focus device can send the target focusing parameters to the information receiver of the lens through wired and/or wireless communication connection.
  • the focusing method can also display the scale image area on the display interface corresponding to the lens; obtain the current focus position of the lens; A target scale sub-area is determined in the area; an in-focus position indication mark is displayed in the target scale sub-area.
  • the scale image area is obtained by using the scale calibration method provided in the above-mentioned embodiment, and the scale image area includes a plurality of scale sub-areas, and each of the scale sub-areas shows a scale mark, which is located on a different scale.
  • the scale markings in the sub-areas are used to indicate different focus positions of the lens, as shown in FIG. 7 , FIG. 8 , FIG. 9 or FIG. 10 .
  • the current focus position of the lens obtained is 8 feet
  • the focus position of 8 feet is the target focusing parameter determined by using the first corresponding relationship through the user operating the focus device.
  • the lens drives its optical elements to move according to the target focusing parameters, and then obtains the in-focus position.
  • the target scale sub-area is the area corresponding to the scale mark 8 feet
  • display an in-focus position indication mark in the target scale sub-area such as a straight line with an arrow shown in FIG. 9 .
  • each of the scale marks is used to indicate a focusing position of the lens
  • the multiple scale marks include: adjacent first scale marks and second scale marks, and adjacent The third scale mark and the fourth scale mark; wherein, the in-focus positions indicated by the first scale mark and the second scale mark differ by a first focus position difference, and the third scale mark and the The in-focus position indicated by the fourth scale mark is different from the second in-focus position difference, the first in-focus position difference is the same as the second in-focus position difference, but the first in-focus position difference is between The pixel distance corresponding to the display interface is different from the pixel distance corresponding to the first focus position difference on the display interface.
  • the scale marks displayed in the image area of the scale can be non-uniformly distributed, and the non-uniform distribution corresponds to the actual adjustment of the focus position of the lens, so it is more convenient for the user to follow the focus control of the lens by referring to the scale.
  • each of the multiple scale marks is used to indicate a focus position of the lens
  • the multiple scale marks include: a first scale mark, a second scale mark, The third scale mark and the fourth scale mark, the distance between the first scale mark and the second scale mark on the display interface is the first pixel distance, and the third scale mark and the fourth scale mark are at The display interface is separated by a second pixel distance, the in-focus position indicated by the first scale mark and the second scale mark differ by a first focus position difference, the third scale mark and the fourth scale mark The in-focus position indicated by the scale mark is different from the second in-focus position difference; wherein, the first ratio of the first in-focus position difference to the first pixel distance is different from the second in-focus position difference a second ratio to the second pixel distance.
  • the scale marks displayed in the image area of the scale can be non-uniformly distributed, and the non-uniform distribution corresponds to the actual adjustment of the focus position of the lens, so it is more convenient for the user to follow the focus control of the lens by referring to the scale.
  • the distance between the first scale mark and the second scale mark on the display interface is a first pixel distance
  • the first pixel distance is positively related to the target rotation mileage of the operating part of the focus device
  • the The target rotation mileage is the corresponding rotation of the operating part of the follow focus device when the lens is adjusted from the first in-focus position corresponding to the first scale mark to the second in-focus position corresponding to the second scale mark mileage. Therefore, it can be ensured that the user rotates the same mileage every time the operating part is turned, and the change position of the in-focus position indicator displayed in the image area of the scale is the same, and the change position of the indicator is specifically moved by the pixel distance on the display interface.
  • the object distance between the subject in the lens viewing range and the lens it is also possible to obtain the object distance between the subject in the lens viewing range and the lens; determine the focal position matching the object distance;
  • the sub-area of the scale corresponding to the focus position displays a subject mark, and the subject mark is used to indicate that the subject exists at the corresponding focus position.
  • the subject identification includes a point cloud identification.
  • the presentation interface includes an image display area for displaying images captured by the lens, and the scale image area is located at one side of the image display area.
  • the in-focus position indicator includes a straight line with an arrow, the straight line with an arrow can cover the object mark, and the arrow of the straight line points to the sub-area of the scale.
  • the focusing method may also adjust the in-focus position indicator from the scale sub-area corresponding to the first scale mark to the scale sub-area corresponding to the second scale mark according to the current rotation position.
  • the scale sub-region of So that the user can observe the change process of focusing.
  • the display interface further includes an image area of a focus position adjustment control; the focusing method further includes: responding to a user's manipulation gesture on the image area of the focus position adjustment control, determining the focus position Adjustment amount; according to the adjustment amount, adjust the focusing position of the lens.
  • the determination method of the first corresponding relationship shown in Fig. 11 can be used.
  • the second corresponding relationship between the rotational position of the rotating part and the focusing parameter of the focus motor, the second corresponding relationship can be determined using the method for determining the second corresponding relationship shown in FIG. 12 .
  • the above-mentioned embodiment realizes the manual focus function of the automatic lens through the focus adjustment of the automatic lens by the focus device, so that the automatic lens can realize the habit of film and television shooting, and at the same time provide a follow focus experience based on the scale and the sense of distance.
  • This enables the automatic lens to meet the shooting needs of the film and television industry, and provides users with more equipment choices when filming and filming.
  • FIG. 14 shows a flow of steps of a lens control method provided by the present application, and the method can be applied to any one of the following focus devices or carrying devices provided in the embodiments of the present application.
  • the carrying device includes a carrying portion, and the carrying portion is used for carrying the lens.
  • the lens control method provided in this embodiment implements control of the lens based on the above-mentioned scale image area.
  • the lens can be a manual lens or an automatic lens.
  • the manual lens utilizes a follow-focus motor to achieve focus
  • the automatic lens includes a driving component and an information receiver, the information receiver is used to receive focusing parameters, and the driving component is used to drive the automatic lens in response to the focusing parameters.
  • the optical elements move to change the focus position.
  • the follow-focus device can provide the follow-focus device described in any one of the above-mentioned embodiments, the follow-focus device includes a motor and an operating part, and the operating part is used for the user to operate and input a follow-focus control signal, and the operation part and the motor The rotating parts are mechanically coupled.
  • the lens control method includes steps S501 to S502.
  • the scale image area includes a plurality of scale sub-areas, and each of the scale sub-areas displays a scale mark, and the scale marks located in different scale sub-areas are used to indicate different focus positions of the lens .
  • obtaining the current in-focus position of the lens is indicated by the object distance from the subject to the lens measured by the distance measuring device. For example, it is obtained that the current focus position of the lens is 8 feet, where the focus position is 8 feet is the target focusing parameter determined by the user operating the focus device, using the first correspondence or the second correspondence, and then The target focusing parameters are sent to the lens, and the lens drives its optical elements to move according to the target focusing parameters, so as to obtain the in-focus position.
  • the first correspondence corresponds to the automatic lens
  • the second correspondence corresponds to the manual lens.
  • the target scale sub-area After acquiring that the current focus position of the lens is 8 feet, determine the target scale sub-area in the plurality of scale sub-areas according to the current focus position, and the target scale sub-area is the area corresponding to the scale mark 8 feet , and display an in-focus position indication mark in the target scale sub-area, such as a straight line with an arrow shown in FIG. 9 .
  • each of the scale marks is used to indicate a focusing position of the lens
  • the multiple scale marks include: adjacent first scale marks and second scale marks, and adjacent The third scale mark and the fourth scale mark; wherein, the in-focus positions indicated by the first scale mark and the second scale mark differ by a first focus position difference, and the third scale mark and the The in-focus position indicated by the fourth scale mark is different from the second in-focus position difference, the first in-focus position difference is the same as the second in-focus position difference, but the first in-focus position difference is between The pixel distance corresponding to the display interface is different from the pixel distance corresponding to the first focus position difference on the display interface.
  • the scale marks displayed in the image area of the scale can be non-uniformly distributed, and the non-uniform distribution corresponds to the actual adjustment of the focus position of the lens, so it is more convenient for the user to follow the focus control of the lens by referring to the scale.
  • each of the multiple scale marks is used to indicate a focus position of the lens
  • the multiple scale marks include: a first scale mark, a second scale mark, The third scale mark and the fourth scale mark, the distance between the first scale mark and the second scale mark on the display interface is the first pixel distance, and the third scale mark and the fourth scale mark are at The display interface is separated by a second pixel distance, the in-focus position indicated by the first scale mark and the second scale mark differ by a first focus position difference, the third scale mark and the fourth scale mark The in-focus position indicated by the scale mark is different from the second in-focus position difference; wherein, the first ratio of the first in-focus position difference to the first pixel distance is different from the second in-focus position difference a second ratio to the second pixel distance.
  • the scale marks displayed in the image area of the scale can be non-uniformly distributed, and the non-uniform distribution corresponds to the actual adjustment of the focus position of the lens, so it is more convenient for the user to follow the focus control of the lens by referring to the scale.
  • the distance between the first scale mark and the second scale mark on the display interface is a first pixel distance
  • the first pixel distance is positively related to the target rotation mileage of the operating part of the focus device
  • the The target rotation mileage is the corresponding rotation of the operating part of the follow focus device when the lens is adjusted from the first in-focus position corresponding to the first scale mark to the second in-focus position corresponding to the second scale mark mileage. Therefore, it can be ensured that the user rotates the same mileage every time the operating part is turned, and the change position of the in-focus position indicator displayed in the image area of the scale is the same, and the change position of the indicator is specifically moved by the pixel distance on the display interface.
  • the object distance between the subject in the lens viewing range and the lens it is also possible to obtain the object distance between the subject in the lens viewing range and the lens; determine the focal position matching the object distance;
  • the sub-area of the scale corresponding to the focus position displays a subject mark, and the subject mark is used to indicate that the subject exists at the corresponding focus position.
  • the subject identification includes a point cloud identification.
  • the presentation interface includes an image display area for displaying images captured by the lens, and the scale image area is located at one side of the image display area.
  • the in-focus position indicator includes a straight line with an arrow, the straight line with an arrow can cover the object mark, and the arrow of the straight line points to the sub-area of the scale.
  • the focusing method may also adjust the in-focus position indicator from the scale sub-area corresponding to the first scale mark to the scale sub-area corresponding to the second scale mark according to the current rotation position.
  • the scale sub-region of So that the user can observe the change process of focusing.
  • the display interface further includes an image area of a focus position adjustment control; the focusing method further includes: responding to a user's manipulation gesture on the image area of the focus position adjustment control, determining the focus position Adjustment amount; according to the adjustment amount, adjust the focusing position of the lens.
  • the lens is communicatively connected with the focus-following device; the lens control method can also acquire the current rotational position of the rotating part of the focus-following device; and adjust the focus of the lens according to the current rotational position Location.
  • the in-focus position indicator may be adjusted from the scale sub-area corresponding to the first scale mark to the scale sub-area corresponding to the second scale mark according to the current rotation position.
  • the optical element of the manual lens is driven by a follow-focus motor. Therefore, the adjustment of the focus position of the lens according to the current rotation position is specifically: obtaining a second corresponding relationship, and the second corresponding relationship is the The corresponding relationship between the rotational position of the rotating part of the follow focus device and the focusing parameter of the focus motor; based on the second correspondence, determine the target focus parameter of the focus motor according to the current rotational position; The target focus parameter is sent to the focus motor, so that the focus motor drives the optical element according to the target focus parameter to adjust the focus position of the lens.
  • the focus-following device and the focus-focus motor are connected based on wired and/or wireless communication; the focus-following device sends the target focusing parameters to The focus motor.
  • the determination of the second correspondence relationship may be determined by using the determination method shown in FIG. 12 , which will not be described in detail here.
  • the focusing method of the lens, the control method of the lens and the calibration method of the scale provided by the embodiment of the present application can bring the automatic lens into the traditional film and television shooting industry with the advantages of high efficiency and low cost, and expand the selection range of equipment for film and television shooting , At the same time, it allows the original users of the automatic lens to experience the experience of film creation, and has a better follow-focus tool without relying too much on autofocus based on phase and contrast detection.
  • FIG. 15 is a schematic block diagram of a control device provided by an embodiment of the present application. As shown in FIG. 15 , the control device 600 further includes one or more processors 601 and memory 602 .
  • the processor 601 may be, for example, a micro-controller unit (Micro-controller Unit, MCU), a central processing unit (Central Processing Unit, CPU), or a digital signal processor (Digital Signal Processor, DSP), etc.
  • MCU Micro-controller Unit
  • CPU Central Processing Unit
  • DSP Digital Signal Processor
  • the memory 602 can be a Flash chip, a read-only memory (ROM, Read-Only Memory) disk, an optical disk, a U disk, or a mobile hard disk.
  • the memory 602 is used to store a computer program; the processor 601 is used to execute the computer program and execute the lens control method and the lens focusing method as described in any one of the above when executing the computer program .
  • the processor is configured to run a computer program stored in the memory, and implement the following steps when executing the computer program:
  • the focus-following device includes an operating part for operation by a user, and the operating part is mechanically coupled with the rotating part; obtaining a first corresponding relationship , the first corresponding relationship is the corresponding relationship between the rotational position of the rotating part of the focus device and the focusing parameter of the driving part of the lens; based on the first corresponding relationship, according to the current rotational position determining a target focusing parameter of a driving component of the lens; sending the target focusing parameter to the information receiver of the lens, so that the driving component of the lens drives according to the target focusing parameter the optical element.
  • the processor is configured to run a computer program stored in the memory, and implement the following steps when executing the computer program:
  • the scale image area is displayed on the display interface corresponding to the lens, and the scale image area includes a plurality of scale sub-areas, and each of the scale sub-areas is displayed with a scale mark, and the scale marks located in different scale sub-areas are used To indicate the different focus positions of the lens; obtain the current focus position of the lens; determine the target scale sub-region in the plurality of scale sub-regions according to the current focus position; in the target scale sub-region The area displays the in-focus position indicator.
  • the processor is configured to run a computer program stored in the memory, and implement the following steps when executing the computer program:
  • each of the marker points includes the rotational position of the rotating part of the motor of the focus device and the corresponding focus position of the lens at the rotational position; according to the at least two marker points , determining the corresponding relationship between the rotational position of the rotating part of the motor of the follow-focus device and the in-focus position; generating a scale image area of the lens according to the corresponding relationship, and the scale image area includes a plurality of scale sub-areas Each of the scale sub-regions is shown with a scale mark, and the scale marks located in different scale sub-regions are used to indicate different focusing positions of the lens.
  • control device in the embodiment of the present application has beneficial technical effects similar to those of the lens focusing method, lens control method, and scale calibration method provided by the above-mentioned embodiments, so details will not be repeated here.
  • control device can be integrated into the focus-focusing device; or integrated into the carrying device to communicate with the focus-focusing device and be able to control the focus-focusing device; or be an independent electronic device, communicate with the focus-focusing device and be able to control Focusing equipment, the specific form is not specifically limited here.
  • FIG. 16 is a schematic block diagram of a follow-focus device provided by an embodiment of the present application.
  • the focus-following device 100 further includes one or more processors 101 and memory 102 .
  • the processor 101 may be, for example, a Micro-controller Unit (Micro-controller Unit, MCU), a Central Processing Unit (Central Processing Unit, CPU) or a Digital Signal Processor (Digital Signal Processor, DSP), etc.
  • MCU Micro-controller Unit
  • CPU Central Processing Unit
  • DSP Digital Signal Processor
  • the memory 102 can be a Flash chip, a read-only memory (ROM, Read-Only Memory) disk, an optical disk, a U disk, or a mobile hard disk.
  • the memory 102 is used to store a computer program; the processor 101 is used to execute the computer program and execute the lens control method and the lens focusing method described in any one of the above when executing the computer program .
  • the processor is configured to run a computer program stored in the memory, and implement the following steps when executing the computer program:
  • the focus-following device includes an operating part for operation by a user, and the operating part is mechanically coupled with the rotating part; obtaining a first corresponding relationship , the first corresponding relationship is the corresponding relationship between the rotational position of the rotating part of the focus device and the focusing parameter of the driving part of the lens; based on the first corresponding relationship, according to the current rotational position determining a target focusing parameter of a driving component of the lens; sending the target focusing parameter to the information receiver of the lens, so that the driving component of the lens drives according to the target focusing parameter the optical element.
  • the processor is configured to run a computer program stored in the memory, and implement the following steps when executing the computer program:
  • the scale image area is displayed on the display interface corresponding to the lens, and the scale image area includes a plurality of scale sub-areas, and each of the scale sub-areas is displayed with a scale mark, and the scale marks located in different scale sub-areas are used To indicate the different focus positions of the lens; obtain the current focus position of the lens; determine the target scale sub-region in the plurality of scale sub-regions according to the current focus position; in the target scale sub-region The area displays the in-focus position indicator.
  • the processor is configured to run a computer program stored in the memory, and implement the following steps when executing the computer program:
  • each of the marker points includes the rotational position of the rotating part of the motor of the focus device and the corresponding focus position of the lens at the rotational position; according to the at least two marker points , determining the corresponding relationship between the rotational position of the rotating part of the motor of the follow-focus device and the in-focus position; generating a scale image area of the lens according to the corresponding relationship, and the scale image area includes a plurality of scale sub-areas Each of the scale sub-regions is shown with a scale mark, and the scale marks located in different scale sub-regions are used to indicate different focusing positions of the lens.
  • the follow-focus device in the embodiment of the present application has beneficial technical effects similar to those of the lens focusing method, lens control method, and scale calibration method provided by the above-mentioned embodiments, so details are not repeated here.
  • FIG. 17 is a schematic block diagram of a control device provided by an embodiment of the present application.
  • the carrying device 700 further includes one or more processors 701 and memory 702 .
  • the processor 701 may be, for example, a micro-controller unit (Micro-controller Unit, MCU), a central processing unit (Central Processing Unit, CPU), or a digital signal processor (Digital Signal Processor, DSP), etc.
  • MCU Micro-controller Unit
  • CPU Central Processing Unit
  • DSP Digital Signal Processor
  • the memory 702 can be a Flash chip, a read-only memory (ROM, Read-Only Memory) disk, an optical disk, a U disk, or a mobile hard disk.
  • the memory 702 is used to store a computer program; the processor 701 is used to execute the computer program and execute the lens control method and the lens focusing method described in any one of the above when executing the computer program .
  • the processor is configured to run a computer program stored in the memory, and implement the following steps when executing the computer program:
  • the focus-following device includes an operating part for operation by a user, and the operating part is mechanically coupled with the rotating part; obtaining a first corresponding relationship , the first corresponding relationship is the corresponding relationship between the rotational position of the rotating part of the focus device and the focusing parameter of the driving part of the lens; based on the first corresponding relationship, according to the current rotational position determining a target focusing parameter of a driving component of the lens; sending the target focusing parameter to the information receiver of the lens, so that the driving component of the lens drives according to the target focusing parameter the optical element.
  • the processor is configured to run a computer program stored in the memory, and implement the following steps when executing the computer program:
  • the scale image area is displayed on the display interface corresponding to the lens, and the scale image area includes a plurality of scale sub-areas, and each of the scale sub-areas is displayed with a scale mark, and the scale marks located in different scale sub-areas are used To indicate the different focus positions of the lens; obtain the current focus position of the lens; determine the target scale sub-region in the plurality of scale sub-regions according to the current focus position; in the target scale sub-region The area displays the in-focus position indicator.
  • the processor is configured to run a computer program stored in the memory, and implement the following steps when executing the computer program:
  • each of the marker points includes the rotational position of the rotating part of the motor of the focus device and the corresponding focus position of the lens at the rotational position; according to the at least two marker points , determining the corresponding relationship between the rotational position of the rotating part of the motor of the follow-focus device and the in-focus position; generating a scale image area of the lens according to the corresponding relationship, and the scale image area includes a plurality of scale sub-areas Each of the scale sub-regions is shown with a scale mark, and the scale marks located in different scale sub-regions are used to indicate different focusing positions of the lens.
  • the carrying device of the embodiment of the present application has beneficial technical effects similar to those of the lens focusing method, lens control method, and scale calibration method provided by the above-mentioned embodiments, so details will not be repeated here.
  • Embodiments of the present application also provide a computer-readable storage medium, the computer-readable storage medium stores a computer program, the computer program includes program instructions, and the processor executes the program instructions to implement the above implementation The steps of any one of the lens control methods provided in the example.
  • the computer-readable storage medium may be an internal storage unit of the focus-following device described in any of the foregoing embodiments, such as a memory or a memory of the focus-following device.
  • the computer-readable storage medium can also be an external storage device of the focus device, such as a plug-in hard disk equipped on the focus device, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital , SD) card, flash memory card (Flash Card), etc.

Landscapes

  • Lens Barrels (AREA)
  • Studio Devices (AREA)

Abstract

La présente invention concerne un procédé de mise au point de lentille, un procédé de commande, un procédé de calibrage d'échelle, un dispositif et un support de stockage. Le procédé de mise au point comprend : l'acquisition de la position de rotation courante d'une partie de rotation d'un dispositif de suivi de mise au point (S401) ; l'acquisition d'une première corrélation, la première corrélation étant une corrélation entre la position de rotation de la partie de rotation du dispositif de suivi de mise au point et un paramètre de mise au point d'un composant d'entraînement d'une lentille (S402) ; sur la base de la première corrélation, la détermination, selon la position de rotation courante, d'un paramètre de mise au point cible du composant d'entraînement de la lentille (S403) ; et l'envoi du paramètre de mise au point cible à un récepteur d'informations de la lentille de sorte que le composant d'entraînement de la lentille entraîne un élément optique selon le paramètre de mise au point cible (S404).
PCT/CN2021/125064 2021-10-20 2021-10-20 Procédé de mise au point de lentille, procédé de commande, procédé de calibrage, dispositif et support de stockage WO2023065168A1 (fr)

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PCT/CN2021/125064 WO2023065168A1 (fr) 2021-10-20 2021-10-20 Procédé de mise au point de lentille, procédé de commande, procédé de calibrage, dispositif et support de stockage
CN202180100404.6A CN117678231A (zh) 2021-10-20 2021-10-20 镜头的调焦方法、控制方法、标定方法、设备及存储介质

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US20080225234A1 (en) * 2004-03-25 2008-09-18 Fritz Gabriel Bauer Method and Apparatus For Adjusting the Picture Definition on the Camera Lens of a Motion Picture Camera
CN103595919A (zh) * 2013-11-15 2014-02-19 深圳市中兴移动通信有限公司 手动对焦方法和拍摄装置
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CN109639971A (zh) * 2018-12-17 2019-04-16 维沃移动通信有限公司 一种拍摄焦距调整方法及终端设备
CN110771133A (zh) * 2018-11-15 2020-02-07 深圳市大疆创新科技有限公司 一种相机镜头调节方法、装置及控制设备、控制系统
CN110809734A (zh) * 2018-11-15 2020-02-18 深圳市大疆创新科技有限公司 一种相机镜头调节方法、装置及控制设备、控制系统
CN110832837A (zh) * 2018-11-15 2020-02-21 深圳市大疆创新科技有限公司 一种相机镜头调节方法、装置及控制设备、控制系统

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080225234A1 (en) * 2004-03-25 2008-09-18 Fritz Gabriel Bauer Method and Apparatus For Adjusting the Picture Definition on the Camera Lens of a Motion Picture Camera
CN103595919A (zh) * 2013-11-15 2014-02-19 深圳市中兴移动通信有限公司 手动对焦方法和拍摄装置
CN105580350A (zh) * 2015-10-29 2016-05-11 深圳市莫孚康技术有限公司 基于无线测距的图像调焦系统、方法及拍摄系统
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