CN110832837A - Camera lens adjusting method and device, control equipment and control system - Google Patents

Camera lens adjusting method and device, control equipment and control system Download PDF

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Publication number
CN110832837A
CN110832837A CN201880038402.7A CN201880038402A CN110832837A CN 110832837 A CN110832837 A CN 110832837A CN 201880038402 A CN201880038402 A CN 201880038402A CN 110832837 A CN110832837 A CN 110832837A
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China
Prior art keywords
preset
regulator
ring
torque
adjustment
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Granted
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CN201880038402.7A
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Chinese (zh)
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CN110832837B (en
Inventor
谢文麟
苏铁
郝祎
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SZ DJI Technology Co Ltd
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SZ DJI Technology Co Ltd
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Publication of CN110832837A publication Critical patent/CN110832837A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/63—Control of cameras or camera modules by using electronic viewfinders
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Lens Barrels (AREA)
  • Studio Devices (AREA)

Abstract

A camera (100) lens adjusting method, a device, a control device and a control system are provided, wherein the camera (100) comprises a view finding lens and an adjusting ring (101) used for adjusting the view finding lens, the adjusting ring (101) is in transmission fit with an adjuster (102), a controller (103) drives the adjusting ring (101) to move through controlling the adjuster (102) so as to adjust the view finding lens, and the method is applied to the controller (103) and comprises the following steps: acquiring operating parameters of the regulator (102), wherein the operating parameters comprise a torque parameter (S501) of the regulator (102) when the adjusting ring (101) is driven to move; and if the torque parameter meets the preset control condition, controlling the power assembly of the regulator (102) and reducing the output torque of the power assembly (S502). Automatic adjustment of the lens of the camera (100) can be safely performed.

Description

Camera lens adjusting method and device, control equipment and control system
Technical Field
The invention relates to the technical field of electronics, in particular to a camera lens adjusting method and device, a control device and a control system.
Background
With the advance of technology and the increase of living standard of people, cameras are not generally luxury goods, and people can use cameras with various performances to acquire needed images in different occasions according to needs. The user can shoot images through an attached camera device such as a smart phone or a tablet personal computer, and can shoot images such as photos and videos with higher quality through a camera such as a single lens reflex camera with higher performance.
Cameras such as single lens reflex cameras are generally provided with an adjusting ring which can adjust the lens, and the adjusting ring may be a tracking ring, a focusing ring, or the like, and the structure of the adjusting ring is schematically shown in fig. 1 a. By rotating the adjusting ring, the aim of focusing can be achieved when the image is shot. The user can take images with such a camera in his/her hand. Also can set up on some equipment, carry out the image through the mode of remote control adjustable ring and shoot, for example set up on certain bearing bracket of cloud platform, or set up again on equipment such as unmanned aerial vehicle.
At present, in the use process of a camera with a lens provided with an adjusting ring, a user generally adjusts the adjusting ring manually according to the quality of an acquired and previewed image to complete control such as focus following and focusing, so as to shoot an image meeting requirements. In addition, the adjustment ring 101 of the camera 10 can be controlled by remotely controlling the adjustment ring 102 through the adjustment device 102 shown in fig. 1a, so as to complete image capturing. However, in the process of remote control by a regulator, how to ensure the safe operation of the regulator becomes a hot issue of research.
Disclosure of Invention
The embodiment of the invention provides a camera lens adjusting method, a camera lens adjusting device, a camera lens control device and a camera lens control system, which can carry out safety control on an adjuster for controlling an adjusting ring in the process of using a camera with the adjusting ring on a lens.
In one aspect, an embodiment of the present invention provides a camera lens adjusting method, where the camera includes a viewfinder lens and an adjusting ring for adjusting the viewfinder lens, the adjusting ring is in transmission fit with an adjuster, and a controller drives the adjusting ring to move by controlling the adjuster to adjust the viewfinder lens, and the method is applied to the controller and includes: acquiring operating parameters of a regulator, wherein the operating parameters comprise a torque parameter when the regulator drives the adjusting ring to move; and if the torque parameter meets a preset control condition, controlling a power assembly of the regulator to reduce the output torque of the power assembly.
On the other hand, an embodiment of the present invention further provides a camera lens adjusting device, where the camera includes a viewfinder lens and an adjusting ring for adjusting the viewfinder lens, the adjusting ring is in transmission fit with an adjuster, and a controller drives the adjusting ring to move by controlling the adjuster to adjust the viewfinder lens, the device includes: an acquisition module that acquires operating parameters of a regulator, the operating parameters including a torque parameter of the regulator when the regulator drives the regulating ring to move; and the processing module is used for controlling the power assembly of the regulator to reduce the output torque of the power assembly when the torque parameter meets the preset control condition.
In another aspect, an embodiment of the present invention provides a controller, where the controller is configured to adjust a camera lens, where the camera includes a view finding lens and an adjusting ring for adjusting the view finding lens, the adjusting ring is in transmission fit with an adjuster, and the controller drives the adjusting ring to move by controlling the adjuster to adjust the view finding lens, where the controller includes: a processor; the processor is used for obtaining the operating parameters of the regulator, wherein the operating parameters comprise the torque parameters of the regulator when the regulator drives the regulating ring to move; and if the torque parameter meets a preset control condition, controlling a power assembly of the regulator to reduce the output torque of the power assembly.
In another aspect, an embodiment of the present invention further provides a control system for a camera lens, where the camera includes a viewfinder lens and an adjusting ring for adjusting the viewfinder lens, the system includes: the adjusting ring is in transmission fit with the adjuster, and the controller drives the adjusting ring to move by controlling the adjuster so as to adjust the viewing lens; the controller is used for acquiring the operating parameters of the regulator, wherein the operating parameters comprise the torque parameters of the regulator when the regulator drives the regulating ring to move; if the torque parameter meets a preset control condition, controlling a power assembly of the regulator; and the regulator is used for reducing the output torque of the power assembly in the regulator according to the control of the controller.
The embodiment of the invention designs a control mode of the power assembly of the regulator, and can effectively monitor the locked-rotor condition in the process of driving the adjusting ring of the camera lens to rotate based on the torque output by the power assembly in the process of automatically controlling the focus ring or the follow-focus ring of the camera lens, thereby controlling the output torque of the power assembly, effectively avoiding the possibility of damaging the motor of the regulator due to locked-rotor and improving the safety of automatic regulation of the camera lens.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1a is a schematic diagram of an adjustment relationship between an adjuster and a camera according to an embodiment of the invention;
fig. 1b is a schematic structural diagram of a control system of a camera lens according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a motor control system configuration for a regulator in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of an embodiment of the present invention with the adjustment gear of the adjuster deployed and the rack on the adjustment ring;
FIG. 4a is a schematic view of a calibration between the adjustment range of the adjuster and the travel range of the adjustment ring in accordance with an embodiment of the present invention;
FIG. 4b is a schematic illustration of another embodiment of the present invention for calibrating between the adjustment range of the adjuster and the travel range of the adjustment ring;
FIG. 4c is a schematic view of another embodiment of the present invention for calibrating the position between the adjustment range of the adjuster and the travel range of the adjustment ring;
FIG. 4d is a schematic view of yet another embodiment of the present invention for calibrating between the adjustment range of the adjuster and the travel range of the adjustment ring;
fig. 5 is a schematic flowchart of a camera lens adjusting method according to an embodiment of the present invention;
FIG. 6 is a graphical illustration of torque parameter versus stroke interval for an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a camera lens adjusting device according to an embodiment of the invention;
fig. 8 is a schematic structural diagram of a control device according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention realizes the adjustment of the camera lens by controlling the adjuster to drive the adjusting ring on the camera lens to rotate. In the process of using the camera with the adjusting ring on the lens, the safety control of the adjuster for driving the adjusting ring mainly comprises the following steps: the output torque of the regulator is safely controlled to avoid the situation that the regulator is locked to rotate to cause the burning of power components such as a motor and the like.
Fig. 1a is a schematic diagram showing an adjustment relationship between an adjuster and a camera according to an embodiment of the present invention, and fig. 1a shows a positional relationship between a camera 100 and an adjuster 102 in which a lens is adjusted by an adjustment ring 101. The adjustment of the adjustment ring 101 mainly comprises: the motor in the adjuster 102 drives the adjusting gear 1021 to rotate under the driving of electricity, so as to drive the adjusting ring 101 to rotate, thereby achieving the purpose of focusing or tracking the camera 100. Specifically, in fig. 1, by controlling the rotation of the adjustment gear 1021 in the adjuster 102, the rotation of the focus ring 1011 or the focus following ring 1012 on the lens can be controlled, so that the purpose of focusing or focusing the camera 100 can be achieved. The camera shown in fig. 1a only includes a focusing ring 1011 and a tracking ring 1012, and in other embodiments, the camera lens may further include an aperture ring for adjusting the exposure level, and the adjustment may also be performed based on the controller and the adjuster of the embodiment of the present invention.
In one embodiment, the adjuster 102 may be controlled by a controller, which may be disposed inside the adjuster 102, and as a part of the adjuster 102, a power assembly, such as a motor, in the adjuster 102 is controlled, and the power assembly, such as the motor, is controlled to control the rotation of the adjusting gear 1021, so as to rotate the adjusting ring 101 on the camera lens. In another embodiment, the adjuster 102 may be controlled by an external controller, as shown in fig. 1b, the controller 103 may be used as an external remote controller to remotely control the adjuster 102, and control a power assembly such as a motor in the adjuster 102 to control the rotation of the adjusting gear 1021, so as to drive the rotation of the adjusting ring 101 on the camera lens.
Further, as shown in fig. 1b, the controller 103 includes a button 1031, the button 1031 can be used as at least a power switch, and can also be used as a calibration button, the controller 103 further includes an adjustment wheel 1032, a user can control the rotation of the motor on the adjuster 102 by manually rotating the adjustment wheel 1032, and further correspondingly control the rotation of the adjustment gear 1021 according to the rotation amount of the adjustment wheel 1032, which is called as an adjustment amount, so as to drive the rotation of the adjustment ring 101 on the camera lens.
In fig. 1a and 1b, the adjusting ring 101 and the adjuster 102 are engaged with each other through gears, so that the adjuster 102 rotates the adjusting ring 101. In other embodiments, the adjustment ring 101 and the adjuster 102 may be geared together by a belt drive, a chain drive, or even by friction wheels.
In one embodiment, control of the regulator 102 may be based on FIG. 1bThe controller 103 in (1) adjusts the adjustment amount of the wheel 1032, and controls the adjusting ring 101 to rotate by a corresponding stroke amount based on the corresponding relationship between the adjustment section of the adjusting wheel 1032 and the stroke section of the adjusting ring 101. In another embodiment, as shown in fig. 2, which is a schematic diagram of a motor control system structure of the regulator 102 according to an embodiment of the present invention, the motor of the regulator is controlled to rotate according to an input position reference input signal and a corresponding feedback signal, wherein the position reference input signal is an adjustment amount input by a user on a controller such as the controller 103 through rotating the adjustment wheel 1032. Specifically, in fig. 2, r is a position reference input signal, e is a tracking error signal, d is an equivalent disturbance signal, u is a voltage command signal, i is a current command signal, n is a measurement noise signal, v is a velocity feedback signal, and y is a position feedback signal. Cp(s) is a position loop feedback controller, Cv(s) is a speed loop feedback controller, filter(s) is a controlled variable filter, Amp is a current controller, J(s) is a speed loop feedback controller, and encoder is an encoder. Based on the architecture shown in fig. 2, the motor of the regulator 102 forms a closed-loop control system by using a position sensor of the motor as a feedback device and the motor as an output element.
The control amount in this control system is the rotation amount of the adjusting gear 1021 driven by the motor, specifically, a target gear position is given based on the adjusting amount on the adjusting wheel 1032, and the target position of the adjusting gear 1021 is controlled by feeding back the position of the adjusting gear 1021, so as to drive the adjusting ring 101 to rotate a corresponding stroke amount.
The camera adjusting ring is generally a position limiting point, fig. 3 is a schematic diagram of the adjusting gear 301 of the adjuster and the rack 302 on the adjusting ring after being unfolded, the rack 302 on the adjusting ring includes a position limiting point a and a position limiting point b, and in one embodiment, the position limiting points function as: a motor on the control regulator drives the regulating gear 301 to rotate clockwise, and when the regulating gear reaches a limit point b, the regulating ring does not rotate any more; similarly, when the motor on the control knob drives the adjusting gear 302 to rotate counterclockwise and reaches the limit point a, the adjusting ring does not rotate any more. Additionally, in one embodiment, the travel interval defined by the limit points a and b may be only a portion of the travel of the rack 302 on the adjustment ring, such as 80%, 90% of the entire travel. A part of interval is reserved outside the limit point a and/or outside the limit point b to be used as a gap and used as a sliding buffer interval.
For the adjusting ring with the limited point, the adjusting section of the adjusting wheel on the controller and the stroke section of the adjusting ring can be calibrated in advance, so as to obtain the mapping relation between the adjusting section and the stroke section, and the controller can control the regulator based on the mapping relation. The mapping relationship may be expressed based on L ═ K × S, where K is an integer, L corresponds to an adjustment interval, and S corresponds to a stroke interval, and after the controller obtains the adjustment amount collected by the control unit such as the adjustment wheel, the stroke amount corresponding to the adjustment amount may be obtained according to the mapping relationship between the adjustment interval of the control unit and the stroke interval of the adjustment ring, for example, when K is 1 and the adjustment amount is currently rotated to 50 unit scales, the corresponding stroke amount is also 50% of the entire stroke interval, and when K is 2, the current adjustment amount is 20 degrees and the corresponding adjustment gear is rotated by 40 degrees (or it is logically considered that the adjustment ring is rotated by 40 degrees). In one embodiment, the controller may detect the adjustment amount on the adjustment wheel in real time, and generate a control command to control the motor to rotate by a corresponding stroke amount according to L ═ K × S in real time. The calibration between the adjustment range of the adjustment wheel and the travel range of the adjustment ring according to an embodiment of the invention is described below with reference to fig. 4a to 4 d.
The range of positions in which the adjustment wheel can be moved, or the adjustment range, can be quantified by 0 to 100, for example, including 100 unit scales. Of course, other quantization methods are also possible and the adjustment interval can also be described in percentages, 100% comprising the entire adjustment interval of the adjustment wheel. The stroke range of the adjusting ring can be greater than the adjusting range of the adjusting wheel, and at this time, after the calibration is completed, when the adjusting wheel is rotated by a smaller adjusting amount, the stroke amount corresponding to the adjusting ring can be greater than the adjusting amount, for example, the stroke range of the adjusting ring is twice of the adjusting range of the adjusting wheel, and then when the adjusting wheel rotates by 10% of the adjusting amount or reaches the adjusting amount of the adjusting amount with the scale of 10, the stroke amount of the adjusting ring rotation is 20% of the stroke range of the adjusting ring. In other embodiments, the stroke interval of the adjustment ring may be equal to or less than the adjustment interval of the adjustment wheel. Different K values, at the same rotational speed of the regulating wheel, control the rotational speed of the regulating gear or regulating ring to rotate differently.
In one embodiment, the controller, upon receiving a calibration command, for example upon detecting a button press on the remote control as shown in fig. 1b, acquires a default set stroke interval and determines the default set stroke interval as the stroke interval of the adjusting ring; the controller sets a mapping between the control section of the control assembly and the determined travel section of the adjusting ring, so that each time an adjustment variable is detected on the adjusting wheel, the adjusting wheel on the adjusting ring or the adjuster is controlled to rotate by a corresponding travel. As shown in fig. 4a, the adjustment interval 401 of the adjustment wheel may be calibrated with a default stroke interval 402 when performing the calibration. In fig. 4a, the default stroke interval 402 is smaller than the actual stroke interval 403 of the current adjusting ring. After the calibration shown in fig. 4a is completed, normally, when the adjustment wheel of the controller is adjusted by 0, the adjustment gear of the corresponding adjuster is located at the point a (or the point B) of the default stroke section 402, and when the adjustment amount of the controller reaches 100% adjustment amount, the adjustment gear of the corresponding adjuster is located at the point B of the default stroke section 402 (when the adjustment amount of 0 corresponds to the point B, the point a is used). The great regulating variable of regulating wheel can correspond a little stroke volume on the adjustable ring, can make things convenient for the user to carry out the adjustment that becomes more meticulous through the regulating wheel of controller like this. The default stroke interval 402 may be a stroke interval set according to an empirical value, or the default stroke interval 402 is determined by performing an average calculation or taking a minimum value based on the stroke intervals of a plurality of different types of lenses and adjusting rings thereof.
In addition to the calibration by default set stroke interval described above, in another embodiment, the controller determines the stroke interval of the adjusting ring by controlling the adjuster to move the adjusting ring after receiving a calibration command, for example, after detecting that a button is pressed on a remote controller as shown in fig. 1 b; the control unit sets a mapping between the control range of the control unit and the determined travel range of the adjusting ring, for example L — K × S, so that each time an adjustment variable is detected on the adjusting wheel, the adjusting ring or the adjusting gear on the adjusting unit is controlled to rotate by a corresponding travel variable.
In one embodiment, the determining the stroke interval of the adjusting ring by controlling the adjuster to drive the adjusting ring to move after receiving the calibration instruction includes: after a calibration instruction is received, determining a first limit point of the adjusting ring by controlling the adjuster to drive the adjusting ring to move; after the first limit point is determined, controlling an adjusting gear on the adjuster to rotate reversely to drive the adjusting ring to move and determine a second limit point; and determining the stroke interval of the adjusting ring according to the stroke of the adjusting gear rotating from the first limit point to the second limit point. Specifically, after a calibration instruction is received, the controller can control the regulator to drive the adjusting ring to rotate, when the output torque fed back by the motor of the regulator is greater than a preset threshold value or the output torque is greater than the preset threshold value and continues for a preset time, the first limit point can be determined to be reached, then the regulator is controlled to reversely drive the adjusting ring to rotate, the second limit point is determined in the same mode, the rotating stroke of the adjusting gear of the regulator can be used as the stroke of the adjusting ring, and the stroke interval is defined by the first limit point and the second limit point.
In other embodiments, the first limit point and the second limit point may also be determined by direct observation by a user during calibration, for example, after receiving a calibration command, the regulator is controlled to drive the adjustment ring to move, it is observed that the first limit point is reached when the adjustment ring cannot rotate, at this time, the button is clicked to determine the first limit point, that is, position data (or angle) sensed by a sensor on the regulator is used as a starting point, that is, the first limit point, the motor is rotated in a reverse direction by pressing for 1 second for a long time, and it is determined that the second limit point is reached when the adjustment ring cannot rotate, the button is clicked again to determine an end point, that is, the second limit point, and a stroke interval of the adjustment ring is determined according to a stroke of the adjustment gear rotating from the first limit point to the second limit point.
In one embodiment, the entire adjustment interval of the adjustment wheel of the controller can be mapped to the entire travel interval of the adjusting ring defined by the first limit point and the second limit point. As shown in fig. 4b, during calibration, the adjustment section 401 of the adjustment wheel can be calibrated with the actual stroke section 403 of the adjustment ring. After the calibration shown in fig. 4b is completed, normally, when the adjustment wheel of the controller is adjusted by 0, the adjustment gear of the corresponding adjuster is located at the point a (or the point b) of the actual stroke interval, and when the adjustment amount of the controller reaches 100% adjustment amount, the adjustment gear of the corresponding adjuster is located at the point b of the default stroke interval (when the adjustment amount of 0 corresponds to the point b, the point a is the time).
In one embodiment, the mapping relationship of the adjustment interval of the control assembly and the stroke interval of the adjustment ring comprises: a mapping relation between a sub-adjustment section included in an adjustment section of the control assembly and a stroke section of the adjustment ring; wherein the stroke interval of the adjusting ring is determined according to a first limit point and a second limit point of the adjusting ring. Namely, the actual travel interval determined by the first limit point and the second limit point is mapped with a part of the interval in the adjusting interval. As shown in fig. 4c, during calibration, a sub-adjustment interval 4011, which is a partial rotatable sub-range, can be selected from the adjustment interval 401 of the adjustment wheel and the actual stroke interval 403 of the adjustment ring can be calibrated. After the calibration shown in fig. 4c is completed, normally, when the adjustment wheel of the controller is adjusted by 25%, the adjustment gear of the corresponding adjuster is located at the point a (or the point b) of the actual stroke interval, and when the adjustment amount of the controller reaches 75%, the adjustment gear of the corresponding adjuster is located at the point b of the default stroke interval (when the adjustment amount of 0 corresponds to the point b, the point a is the time). Therefore, the smaller regulating quantity can control a larger stroke range, and a user can conveniently and quickly regulate and control the regulating ring. The sub-regulation intervals of the control assembly on the controller comprise: a control section on the controller between a first adjustment point and a second adjustment point between an initial adjustment point and an ending adjustment point of the control assembly. Specifically, after receiving the calibration instruction, when receiving a first confirmation instruction, the current rotating adjustment point of the control assembly is marked as a first adjustment point; the user can rotate the adjustment amount in a manual mode or the like, and after the adjustment amount is rotated, the currently rotated adjustment point of the control assembly is recorded as a second adjustment point when a second confirmation instruction is received. Thereby selecting a part of the sub-intervals in the regulatory interval.
As shown in fig. 4c, during calibration, a sub-adjustment interval 4011, which is a partial rotatable sub-range, can be selected from the adjustment interval 401 of the adjustment wheel and the actual stroke interval 403 of the adjustment ring can be calibrated. The actual operations may include: the controller is enabled to enter the operating mode selected by the adjusting interval currently for two consecutive times according to P seconds (or other defined operating modes), when the controller is continuously clicked for three times for the first time (the third confirmation instruction may be other defined operating modes), the current adjusting point of the adjusting wheel of the controller is used as the first adjusting point, that is, the adjusting point at the 25% position in fig. 4d, and when the user manually rotates the adjusting wheel or rotates the adjusting wheel in other manners, and then continuously clicks for three times for the second time (the fourth confirmation instruction may be other defined operating modes), the adjusting point at the rotated adjusting wheel is used as the second end point, that is, the adjusting point at the 75% position in fig. 4d, so as to determine the calibration adjusting interval of 25% to 75% of the adjusting interval. After the calibration shown in fig. 4d is completed, normally, when the adjustment wheel of the controller is adjusted by 25%, the adjustment gear of the corresponding adjuster is located at the point a (or the point b) of the actual stroke interval, and when the adjustment amount of the controller reaches 75%, the adjustment gear of the corresponding adjuster is located at the point b of the default stroke interval (when the adjustment amount of 0 corresponds to the point b, the point a is the time). Therefore, the smaller regulating quantity can control a larger stroke range, and a user can conveniently and quickly regulate and control the regulating ring.
In one embodiment, the mapping relationship of the adjustment interval of the control assembly and the stroke interval of the adjustment ring comprises: the mapping relation between a sub-adjusting interval included in the adjusting interval of the control assembly and a sub-stroke interval in the stroke interval of the adjusting ring; wherein the stroke interval of the adjusting ring is determined according to a first limit point and a second limit point of the adjusting ring. As shown in fig. 4d, during calibration, a partial rotatable sub-adjustment interval 4011 selected from the adjustment interval 401 of the adjustment wheel and a partial limit stroke sub-interval 4031 selected from the actual stroke interval 403 of the adjustment ring may be selected for calibration. In an embodiment, the adjusting manner of the sub-adjustment interval may refer to the description of fig. 4 c. The sub-stroke interval is a second stroke interval between the first stroke point and the second stroke point in the adjusting ring, and the second stroke interval is determined as a rotation stroke interval; the first stroke point and the second stroke point are obtained by detection in the process that the regulator drives the adjusting ring to rotate, and the first stroke point and the second stroke point are both within an actual stroke interval limited by a first limit point and a second limit point. Specifically, a current rotating stroke point of the adjusting gear when a third confirmation instruction is received is recorded as a first stroke point, and a current rotating stroke point of the adjusting gear when a fourth confirmation instruction is received is recorded as a second stroke point. The actual operations may include: after the limit point a is determined, the regulator is controlled to rotate clockwise, when a click operation (a third confirmation instruction, which may be another defined operation mode) of the user on the button is received in the operation mode selected by the stroke interval, the current stroke point is determined as a first stroke point, for example, the AA point in fig. 4d, and the adjusting ring continues to rotate, and when a click operation (a fourth confirmation instruction, which may be another defined operation mode) is received again, the current stroke point after the continuous rotation is determined as a second stroke point, for example, the BB point in fig. 4d, and then a sub-stroke interval of AA-BB is determined.
After the calibration shown in fig. 4d is completed, normally, when the adjustment wheel of the controller is adjusted by 25%, the adjustment gear of the corresponding adjuster is located at the AA point (or the BB point) of the actual stroke interval, and when the adjustment wheel of the controller reaches 75% of the adjustment amount, the adjustment gear of the corresponding adjuster is located at the BB point (when 0 adjustment amount corresponds to the BB point, the AA point is at this time) of the default stroke interval. Therefore, the user can conveniently adjust the adjusting ring at any adjusting speed. For example, if the adjustment speed is fast, the rotatable sub-range 4011 may be smaller than the limit stroke sub-interval 4031, and if the adjustment speed is slow, the adjustment accuracy is considered, the rotatable sub-range 4011 may be larger than the limit stroke sub-interval 4031. If the rotation speed of the adjustment wheel is consistent with the adjustment speed of the adjustment ring, the rotatable sub-range 4011 may be equal to the limit stroke sub-interval 4031.
In one embodiment, the mapping relationship of the adjustment interval of the control assembly and the stroke interval of the adjustment ring comprises: a mapping relationship between an adjustment interval of the control assembly and a sub-stroke interval included in a stroke interval of the adjustment ring; the stroke interval of the adjusting ring is determined according to a first limit point and a second limit point of the adjusting ring, namely, a part of the actual stroke interval determined by the first limit point and the second limit point is mapped with the adjusting interval.
After the actual stroke interval is determined, the adjustment interval of the adjustment wheel of the controller is known, that is, various calibration processes can be performed as needed, so that the user can adjust the adjustment ring of the lens. In addition, in other embodiments, the mapping relationship may be configured by a software application, specifically, a user interface may be provided for a user, patterns similar to fig. 4a to 4d for expressing the adjustment interval and the trip interval may be displayed on the user interface, and the user determines the adjustment interval and the trip interval to be mapped by sliding a virtual button, and completes mapping of the adjustment interval and the trip interval, and writes the mapping into the controller. Or, the controller is an intelligent terminal, has a touch screen display function, and then carries out intuitive configuration through a user interface.
After the calibration process is completed, please refer to fig. 5, which is a flowchart illustrating a camera lens adjusting method according to an embodiment of the present invention, where the method according to the embodiment of the present invention can be executed by the aforementioned controller. As mentioned above, the controller can be a single remote controller, and the rotation control of the lens adjusting ring is realized by means of remote control of the adjuster; the adjusting gear can be arranged in the adjuster, the adjusting gear is controlled to rotate by controlling the output torque of the motor through being connected with the motor in the adjuster, and finally rotation control over the lens adjusting ring is achieved.
In the embodiment of the invention, the adjusting ring is in transmission fit with the adjuster, and the controller drives the adjusting ring to adjust and control the viewing lens by controlling the rotation of the adjuster.
S501: a controller obtains operating parameters of a regulator, including a torque parameter of the regulator as the regulator drives movement of the adjustment ring. The torque output under various conditions during the adjustment of the adjustment ring by the regulator such as shown in fig. 1a and 1b is evaluated, resulting in the correspondence of the torque parameter to the actual stroke interval as shown in fig. 6. Based on the corresponding relation, the embodiment of the invention controls the regulator from the moment of obtaining the torque parameter, and further completes the control of the lens regulating ring. The torque parameter is calculated by sensing the voltage and current on the power component of the regulator, which in one embodiment may be calculated by the regulator and sent to the controller.
S502: and if the torque parameter meets a preset control condition, the controller controls the power assembly of the regulator to reduce the output torque of the power assembly. The power assembly includes a motor. When detecting that the torque parameter satisfies preset control condition, can think that the motor of regulator probably has the condition of stalling, has the risk that the motor is burnt, through reducing this moment the output torque of power component realizes safety control to avoid the motor risk of burning.
The locked-rotor condition may be, for example: in the process of controlling the rotation of the motor of the adjuster to enable the adjusting gear to drive the adjusting ring to rotate, the adjusting ring may reach the limit point due to inaccurate calibration or gear slippage and the like, but the motor of the adjuster still drives the adjusting gear to rotate, and at the moment, the motor outputs torque, but the adjusting ring and the adjusting gear do not rotate actually. At this time, the controller controls the power assembly of the regulator, so as to reduce the output torque of the power assembly to a preset torque threshold, as shown in fig. 6, and reducing the output torque of the power assembly mainly includes gradually reducing the torque of the motor to a minimum value, and even turning off the power supply of the motor.
In one embodiment, the controller may determine in real time whether a parameter value of the acquired operating parameter is greater than a preset second threshold; and if so, triggering and detecting whether the torque parameter meets the preset control condition. Referring to fig. 6, it can be found that after the rotation is started from the limit point a, the output torque reaches a certain value when reaching the limit point b, at this time, the torque value obtained at the limit point b during the detection configuration or the data initialization node is used as a reference value, the reference value is used as a second threshold value, or a value slightly smaller than the reference value or slightly larger than the reference value is used as a second threshold value, and when the torque value is detected to be larger than the second threshold value, a processing flow for determining whether the torque parameter meets a preset control condition is started, for example, a stroke point of the movement of the adjusting ring is obtained during the rotation of the adjuster to drive the adjusting ring to move, and whether the stroke point is a target stroke point is determined; or whether the detected adjustment amount on a control member such as an adjustment wheel on the controller is a preset target amount, or the like.
The adjuster mainly drives the adjusting ring to rotate in a gear meshing mode, and in other embodiments, the adjuster and the adjusting ring can be in transmission fit through belt transmission, chain transmission or even a friction wheel mode.
In one embodiment, the torque parameter satisfying the preset control condition includes: the parameter value of the torque parameter is larger than a preset first threshold value, and the duration of the torque parameter larger than the preset first threshold value is larger than a preset duration threshold value. Referring to fig. 6, for example, the first threshold is a value close to the maximum value of the torque of the motor, and when the first threshold is greater than the first threshold and lasts for 5 seconds, it is considered that the control condition is satisfied, and the torque needs to be reduced, for example, the torque is gradually reduced to the minimum value after 5 seconds, so as to ensure that the motor is kept at the position where the stalling occurs, but the motor does not rotate. It is understood that the minimum value may approach or equal 0 to stall the motor in the stall position.
In one embodiment, the torque parameter satisfying the preset control condition includes: in the process that the regulator rotates to drive the adjusting ring to move, the adjusting ring moves to a preset target travel point, and the duration of the torque parameter is greater than a preset first threshold is greater than a preset duration threshold. In order to avoid the overhead caused by continuously acquiring the torque parameters, the torque parameters output by the motor do not need to be acquired in real time, but the acquisition of the torque parameters is started only when the adjusting ring is detected to rotate to a certain specific position, namely a preset target travel point, along with the rotation of the adjusting gear of the adjuster. In one embodiment, the target trip point may be a restriction point, such as restriction point a or restriction point b described above. In another embodiment, the target travel point is a point within a preset travel interval set according to limit points specified on the travel of said adjusting ring. The preset stroke interval may include: the travel interval from a point close to the limit point. Whether the adjusting ring moves to the target stroke point or not can be detected by the adjuster, and the adjuster compares the rotating stroke of the adjusting gear with the known stroke of the adjusting ring so as to determine whether the adjusting ring reaches the limit point or reaches the inside of a certain point close to the limit point along with the rotation of the adjusting gear. Of course, in other embodiments, whether the adjustment ring moves to the target travel point may also be determined based on data sensed by a motion sensor disposed on the adjustment ring.
In one embodiment, the controller comprises a control assembly, the controller controls the adjuster to drive the adjusting ring to move through the detected adjusting amount on the control assembly, the control assembly refers to the above-mentioned adjusting wheel, and the motor of the adjuster can be controlled to rotate through rotating the adjusting wheel. The controller can also be a mobile terminal or a remote controller, for example, a control interface is arranged on the mobile terminal, and the function of the control assembly is realized through a parameter input area or a virtual adjusting wheel on the control interface; or the functions of the control assembly are realized through a dial wheel, a knob or a key on a remote controller. The torque parameter meeting the preset control condition comprises the following steps: the detected regulating quantity on the control assembly is a preset target quantity, and the duration of the torque parameter is greater than a preset first threshold value. In order to avoid the overhead caused by continuously acquiring the torque parameters, the torque parameters output by the motor are not acquired in real time, but the output torque of the motor of the regulator is acquired only when the regulating wheel is determined to rotate to a certain regulating point. The adjustment point may be, for example, an adjustment point corresponding to a limit point of the adjustment ring, or a point within a certain interval close to the limit point, and specifically, the preset target amount falls within a preset adjustment amount range set according to the limit point specified on the movement stroke of the adjustment ring.
The embodiment of the invention designs a control mode of the power assembly of the regulator, and can effectively monitor the locked-rotor condition in the process of driving the adjusting ring of the camera lens to rotate based on the torque output by the power assembly in the process of automatically controlling the focus ring or the follow-focus ring of the camera lens, thereby controlling the output torque of the power assembly, effectively avoiding the possibility of damaging the motor of the regulator due to locked-rotor and improving the safety of automatic regulation of the camera lens.
Referring to fig. 7, the structural diagram of the camera lens adjusting device according to the embodiment of the present invention is a schematic diagram of a structure of the camera lens adjusting device, where the device may be applied to the controller. Specifically, the apparatus according to the embodiment of the present invention includes the following structure.
An obtaining module 701, configured to obtain an operating parameter of a regulator, where the operating parameter includes a torque parameter of the regulator when the regulator drives the regulating ring to move; and the processing module 702 is configured to control the power component of the regulator to reduce the output torque of the power component when the torque parameter meets a preset control condition.
In one embodiment, the adjustment ring is geared with the adjuster.
In one embodiment, the torque parameter satisfying the preset control condition includes: the parameter value of the torque parameter is larger than a preset first threshold value, and the duration of the torque parameter larger than the preset first threshold value is larger than a preset duration threshold value.
In one embodiment, the torque parameter satisfying the preset control condition includes: in the process that the regulator rotates to drive the adjusting ring to move, the adjusting ring moves to a preset target travel point, and the duration of the torque parameter is greater than a preset first threshold is greater than a preset duration threshold.
In one embodiment, the preset target travel point is within a preset travel range set according to a limit point specified on the movement travel of the adjusting ring.
In one embodiment, the controller comprises a control assembly, and the controller controls the adjuster to drive the adjusting ring to move through the detected adjusting amount on the control assembly; the torque parameter meeting the preset control condition comprises the following steps: the detected regulating quantity on the control assembly is a preset target quantity, and the duration of the torque parameter is greater than a preset first threshold value.
In one embodiment, the preset target amount falls within a preset adjustment range set according to a designated limit point on the movement stroke of the adjustment ring.
In an embodiment, after the obtaining of the operating parameter of the regulator, the processing module 702 is further configured to determine whether a parameter value of the obtained operating parameter is greater than a preset second threshold; and if so, detecting whether the torque parameter meets a preset control condition.
In one embodiment, the processing module 702 is specifically configured to control the power assembly of the regulator to reduce the output torque of the power assembly to a preset torque threshold.
In one embodiment, the adjustment ring comprises a tracking ring or a focusing ring.
The specific implementation of each module in the embodiment of the present invention refers to the description of the related content in the foregoing embodiment, which is not described herein again.
The embodiment of the invention designs a control mode of the power assembly of the regulator, and can effectively monitor the locked-rotor condition in the process of driving the adjusting ring of the camera lens to rotate based on the torque output by the power assembly in the process of automatically controlling the focus ring or the follow-focus ring of the camera lens, thereby controlling the output torque of the power assembly, effectively avoiding the possibility of damaging the motor of the regulator due to locked-rotor and improving the safety of automatic regulation of the camera lens.
Referring to fig. 8 again, the present invention is a schematic structural diagram of a control device according to an embodiment of the present invention, the control device corresponds to the aforementioned controller, the control device is configured to adjust a camera lens, the camera includes a view finding lens and an adjusting ring for adjusting the view finding lens, the adjusting ring is in transmission fit with an adjuster, and the control device drives the adjusting ring to move by controlling the adjuster to adjust the view finding lens, where the control device includes: a processor; further optionally, the control device may further include a power supply circuit, a charging interface, and the like, and in addition, the control device further includes a user interface, where the user interface includes a button and a control component. The control member may be the above mentioned adjustment wheel. The button can be used as a power switch and can also be used for triggering the calibration of the mapping relation between the adjusting interval and the travel interval.
The processor may be a Central Processing Unit (CPU). The processor may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or the like. The PLD may be a field-programmable gate array (FPGA), a General Array Logic (GAL), or the like. The processor may implement the camera lens adjustment method as shown in the embodiment of fig. 5 of the present application by calling program instructions stored in a storage device provided in the control apparatus.
Wherein the storage device may include a volatile memory (volatile memory), such as a random-access memory (RAM); the storage device may also include a non-volatile memory (non-volatile memory), such as a flash memory (flash memory), a solid-state drive (SSD), etc.; the storage means may also comprise a combination of memories of the kind described above.
In one embodiment, the processor is configured to obtain an operating parameter of a regulator, the operating parameter including a torque parameter of the regulator while driving the adjustment ring in motion; and if the torque parameter meets a preset control condition, controlling a power assembly of the regulator to reduce the output torque of the power assembly.
In one embodiment, the adjustment ring is geared with the adjuster.
In one embodiment, the torque parameter satisfying the preset control condition includes: the parameter value of the torque parameter is larger than a preset first threshold value, and the duration of the torque parameter larger than the preset first threshold value is larger than a preset duration threshold value.
In one embodiment, the torque parameter satisfying the preset control condition includes: in the process that the regulator rotates to drive the adjusting ring to move, the adjusting ring moves to a preset target travel point, and the duration of the torque parameter is greater than a preset first threshold is greater than a preset duration threshold.
In one embodiment, the preset target travel point is within a preset travel range set according to a limit point specified on the movement travel of the adjusting ring.
In one embodiment, the control device comprises a control assembly, and the regulator is controlled to drive the regulating ring to move through the detected regulating amount on the control assembly; the torque parameter meeting the preset control condition comprises the following steps: the detected regulating quantity on the control assembly is a preset target quantity, and the duration of the torque parameter is greater than a preset first threshold value.
In one embodiment, the preset target amount falls within a preset adjustment range set according to a designated limit point on the movement stroke of the adjustment ring.
In an embodiment, the processor is further configured to determine whether a parameter value of the obtained operating parameter is greater than a preset second threshold value; and if so, detecting whether the torque parameter meets a preset control condition.
In one embodiment, the processor is specifically configured to control a power assembly of the regulator to reduce an output torque of the power assembly to a preset torque threshold.
In one embodiment, the adjustment ring comprises a tracking ring or a focusing ring.
For the specific implementation of the processor in the embodiment of the present invention, reference is made to the description of relevant contents in the foregoing embodiment, which is not repeated herein.
The embodiment of the invention designs a control mode of the power assembly of the regulator, and can effectively monitor the locked-rotor condition in the process of driving the adjusting ring of the camera lens to rotate based on the torque output by the power assembly in the process of automatically controlling the focus ring or the follow-focus ring of the camera lens, thereby controlling the output torque of the power assembly, effectively avoiding the possibility of damaging the motor of the regulator due to locked-rotor and improving the safety of automatic regulation of the camera lens.
Further, an embodiment of the present invention further provides a control system for a camera lens, a specific schematic of the system can be shown in fig. 1b, where the camera includes a viewfinder lens and an adjusting ring for adjusting the viewfinder lens, and the system includes: the adjusting ring is in transmission fit with the adjuster, and the controller drives the adjusting ring to move by controlling the adjuster so as to adjust the viewing lens;
the controller is used for acquiring the operating parameters of the regulator, wherein the operating parameters comprise the torque parameters of the regulator when the regulator drives the regulating ring to move; if the torque parameter meets a preset control condition, controlling a power assembly of the regulator;
and the regulator is used for reducing the output torque of the power assembly in the regulator according to the control of the controller.
In one embodiment, the adjustment ring is geared with the adjuster.
In one embodiment, the torque parameter satisfying the preset control condition includes: the parameter value of the torque parameter is larger than a preset first threshold value, and the duration of the torque parameter larger than the preset first threshold value is larger than a preset duration threshold value.
In one embodiment, the torque parameter satisfying the preset control condition includes: in the process that the regulator rotates to drive the adjusting ring to move, the adjusting ring moves to a preset target travel point, and the duration of the torque parameter is greater than a preset first threshold is greater than a preset duration threshold.
In one embodiment, the preset target travel point is within a preset travel range set according to a limit point specified on the movement travel of the adjusting ring.
In one embodiment, the controller comprises a control assembly, and the controller controls the adjuster to drive the adjusting ring to move through the detected adjusting amount on the control assembly; the torque parameter meeting the preset control condition comprises the following steps: the detected regulating quantity on the control assembly is a preset target quantity, and the duration of the torque parameter is greater than a preset first threshold value.
In one embodiment, the preset target amount falls within a preset adjustment range set according to a designated limit point on the movement stroke of the adjustment ring.
In one embodiment, after acquiring the operating parameter of the regulator, the controller is further configured to determine whether a parameter value of the acquired operating parameter is greater than a preset second threshold value; and if so, detecting whether the torque parameter meets a preset control condition.
In one embodiment, the controller controls a power assembly of the regulator, and reducing the output torque of the power assembly includes: and controlling a power assembly of the regulator to reduce the output torque of the power assembly to a preset torque threshold value.
In one embodiment, the controller includes: a button and an adjustment wheel for receiving an adjustment amount.
For the specific implementation of the controller in the embodiment of the present invention, reference is made to the description of relevant contents in the foregoing embodiment, which is not repeated herein.
The embodiment of the invention designs a control mode of the power assembly of the regulator, and can effectively monitor the locked-rotor condition in the process of driving the adjusting ring of the camera lens to rotate based on the torque output by the power assembly in the process of automatically controlling the focus ring or the follow-focus ring of the camera lens, thereby controlling the output torque of the power assembly, effectively avoiding the possibility of damaging the motor of the regulator due to locked-rotor and improving the safety of automatic regulation of the camera lens.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above disclosure is intended to be illustrative of only some embodiments of the invention, and is not intended to limit the scope of the invention.

Claims (31)

1. A camera lens adjusting method, the camera includes a view finding lens and an adjusting ring used for adjusting the view finding lens, the adjusting ring is matched with an adjuster through transmission, a controller drives the adjusting ring to move through controlling the adjuster to adjust the view finding lens, the method is applied to the controller, and comprises the following steps:
acquiring operating parameters of a regulator, wherein the operating parameters comprise a torque parameter when the regulator drives the adjusting ring to move;
and if the torque parameter meets a preset control condition, controlling a power assembly of the regulator to reduce the output torque of the power assembly.
2. The method of claim 1, wherein the adjustment ring is geared with the adjuster.
3. The method of claim 1, wherein the torque parameter satisfying a preset control condition comprises: the parameter value of the torque parameter is larger than a preset first threshold value, and the duration of the torque parameter larger than the preset first threshold value is larger than a preset duration threshold value.
4. The method of claim 1, wherein the torque parameter satisfying a preset control condition comprises: in the process that the regulator rotates to drive the adjusting ring to move, the adjusting ring moves to a preset target travel point, and the duration of the torque parameter is greater than a preset first threshold is greater than a preset duration threshold.
5. The method of claim 4 wherein the predetermined target travel point is within a predetermined travel range set according to a designated limit point on the travel of the adjustment ring.
6. The method of claim 1, including a control assembly on the controller, the controller controlling the regulator to move the adjustment ring by a sensed adjustment amount on the control assembly;
the torque parameter meeting the preset control condition comprises the following steps: the detected regulating quantity on the control assembly is a preset target quantity, and the duration of the torque parameter is greater than a preset first threshold value.
7. The method as claimed in claim 6, characterized in that the preset target value falls within a preset adjustment value range which is set in accordance with a designated limit point on the movement travel of the adjusting ring.
8. The method of any of claims 1-7, wherein after obtaining the operating parameter of the regulator, further comprising:
judging whether the parameter value of the obtained operation parameter is larger than a preset second threshold value or not;
and if so, triggering and detecting whether the torque parameter meets the preset control condition.
9. The method of any of claims 1-7, wherein controlling a power assembly of the regulator to reduce an output torque of the power assembly comprises:
and controlling a power assembly of the regulator to reduce the output torque of the power assembly to a preset torque threshold value.
10. The method of any of claims 1-9, wherein the adjustment ring comprises a focus ring or a tracking ring.
11. The utility model provides a camera lens adjusting device, the camera is including the camera lens and be used for adjusting the adjustable ring of camera lens, a serial communication port, the adjustable ring passes through the transmission cooperation with the regulator, and the controller is through control the regulator drives the adjustable ring motion is in order to right the camera lens adjusts, the device includes:
an acquisition module that acquires operating parameters of a regulator, the operating parameters including a torque parameter of the regulator when the regulator drives the regulating ring to move;
and the processing module is used for controlling the power assembly of the regulator to reduce the output torque of the power assembly when the torque parameter meets the preset control condition.
12. The utility model provides a control device, its characterized in that, control device is used for adjusting the camera lens, the camera includes the camera lens and is used for adjusting the adjustable ring of camera lens, the adjustable ring passes through the transmission cooperation with the regulator, control device is through control the regulator drives the adjustable ring motion is in order to right the camera lens is adjusted, wherein, control device includes: a processor;
the processor is used for obtaining the operating parameters of the regulator, wherein the operating parameters comprise the torque parameters of the regulator when the regulator drives the regulating ring to move; and if the torque parameter meets a preset control condition, controlling a power assembly of the regulator to reduce the output torque of the power assembly.
13. The control apparatus of claim 12, wherein the adjustment ring is geared with the adjuster.
14. The control apparatus according to claim 12, wherein the torque parameter satisfying a preset control condition includes: the parameter value of the torque parameter is larger than a preset first threshold value, and the duration of the torque parameter larger than the preset first threshold value is larger than a preset duration threshold value.
15. The control apparatus according to claim 12, wherein the torque parameter satisfying a preset control condition includes: in the process that the regulator rotates to drive the adjusting ring to move, the adjusting ring moves to a preset target travel point, and the duration of the torque parameter is greater than a preset first threshold is greater than a preset duration threshold.
16. The control apparatus of claim 15, wherein the predetermined target travel point is within a predetermined travel range set in accordance with a designated limit point on the travel of the adjustment ring.
17. The control apparatus of claim 12, including a control assembly thereon, the regulator being controlled to move the adjustment ring by a sensed adjustment amount on the control assembly;
the torque parameter meeting the preset control condition comprises the following steps: the detected regulating quantity on the control assembly is a preset target quantity, and the duration of the torque parameter is greater than a preset first threshold value.
18. The control apparatus according to claim 17, wherein the preset target amount falls within a preset adjustment amount range that is set in accordance with a prescribed limit point on a movement stroke of the adjusting ring.
19. The control device according to any one of claims 12 to 18, wherein the processor is further configured to determine whether a parameter value of the acquired operating parameter is greater than a preset second threshold value; and if so, detecting whether the torque parameter meets a preset control condition.
20. Control device according to any of claims 12-18, wherein the processor, in particular for controlling the power pack of the regulator, reduces the output torque of the power pack to a preset torque threshold.
21. The control apparatus of any of claims 12-20, wherein the adjustment ring comprises a tracking ring or a focusing ring.
22. A control system for a camera lens, the camera including a viewfinder lens and an adjustment ring for adjusting the viewfinder lens, the system comprising: the adjusting ring is in transmission fit with the adjuster, and the controller drives the adjusting ring to move by controlling the adjuster so as to adjust the viewing lens;
the controller is used for acquiring the operating parameters of the regulator, wherein the operating parameters comprise the torque parameters of the regulator when the regulator drives the regulating ring to move; if the torque parameter meets a preset control condition, controlling a power assembly of the regulator;
and the regulator is used for reducing the output torque of the power assembly in the regulator according to the control of the controller.
23. The system of claim 22, wherein the adjustment ring is geared with the adjuster.
24. The system of claim 22, wherein the torque parameter meeting a preset control condition comprises: the parameter value of the torque parameter is larger than a preset first threshold value, and the duration of the torque parameter larger than the preset first threshold value is larger than a preset duration threshold value.
25. The system of claim 22, wherein the torque parameter meeting a preset control condition comprises: in the process that the regulator rotates to drive the adjusting ring to move, the adjusting ring moves to a preset target travel point, and the duration of the torque parameter is greater than a preset first threshold is greater than a preset duration threshold.
26. The system of claim 25 wherein said predetermined target travel point is within a predetermined travel range set in accordance with a designated limit point on the travel of said adjustment ring.
27. The system of claim 22, including a control assembly on said controller for controlling said regulator to move said adjustment ring by a sensed adjustment amount on said control assembly;
the torque parameter meeting the preset control condition comprises the following steps: the detected regulating quantity on the control assembly is a preset target quantity, and the duration of the torque parameter is greater than a preset first threshold value.
28. The system of claim 27, wherein said predetermined target amount falls within a predetermined adjustment range set according to a designated limit point on a movement stroke of said adjustment ring.
29. The system of any one of claims 22-28, wherein after obtaining the operating parameter of the regulator, further comprising:
judging whether the parameter value of the obtained operation parameter is larger than a preset second threshold value or not;
and if so, triggering and detecting whether the torque parameter meets the preset control condition.
30. The system of any of claims 22-28, wherein the controller is configured to control a power assembly of the regulator, and wherein reducing an output torque of the power assembly comprises: and controlling a power assembly of the regulator to reduce the output torque of the power assembly to a preset torque threshold value.
31. The system of any one of claims 22-30, wherein the controller comprises: a button and an adjustment wheel for receiving an adjustment amount.
CN201880038402.7A 2018-11-15 2018-11-15 Camera lens adjusting method and device, control equipment and control system Expired - Fee Related CN110832837B (en)

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