WO2014115274A1 - Cctvレンズ及びcctvレンズの補正方法 - Google Patents
Cctvレンズ及びcctvレンズの補正方法 Download PDFInfo
- Publication number
- WO2014115274A1 WO2014115274A1 PCT/JP2013/051382 JP2013051382W WO2014115274A1 WO 2014115274 A1 WO2014115274 A1 WO 2014115274A1 JP 2013051382 W JP2013051382 W JP 2013051382W WO 2014115274 A1 WO2014115274 A1 WO 2014115274A1
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- WIPO (PCT)
- Prior art keywords
- lens
- zoom
- cctv
- pulse motor
- focus
- Prior art date
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
- G02B7/102—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens controlled by a microcomputer
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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
- H04N23/50—Constructional details
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
- G03B3/10—Power-operated focusing
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B5/02—Lateral adjustment of lens
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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
- H04N23/663—Remote control of cameras or camera parts, e.g. by remote control devices for controlling interchangeable camera parts based on electronic image sensor signals
-
- 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
-
- 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
- H04N23/69—Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
- H04N25/61—Noise processing, e.g. detecting, correcting, reducing or removing noise the noise originating only from the lens unit, e.g. flare, shading, vignetting or "cos4"
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0046—Movement of one or more optical elements for zooming
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0053—Driving means for the movement of one or more optical element
Definitions
- the present invention relates to a correction method of a CCTV lens such as a CCTV (Closed-Circuit Television) lens used for a monitoring television camera or the like, a peripheral light amount correction of the CCTV lens, and a distortion aberration correction of the CCTV lens.
- a CCTV lens such as a CCTV (Closed-Circuit Television) lens used for a monitoring television camera or the like
- a peripheral light amount correction of the CCTV lens such as a CCTV (Closed-Circuit Television) lens used for a monitoring television camera or the like
- a peripheral light amount correction of the CCTV lens such as a CCTV (Closed-Circuit Television) lens used for a monitoring television camera or the like
- a peripheral light amount correction of the CCTV lens such as a CCTV (Closed-Circuit Television) lens used for a monitoring television camera or the like
- a peripheral light amount correction of the CCTV lens such as a CCTV (Closed-Circuit Television) lens used for a monitoring television camera or the
- a zoom lens (Varior Lens) or a varifocal lens (Varifocal Lens) is used.
- the zoom lens does not move the focus (imaging) position even when the zoom (magnification) operation is performed.
- the varifocal lens performs adjustment of the zoom group and the focus group separately. is there. That is, the varifocal lens first adjusts the magnification change ratio by moving the zoom adjustment lens in the optical axis direction to set a so-called angle of view. Next, the focus adjustment lens is moved to correct the shift of the focus position (so-called out-of-focus) caused by the movement of the zoom adjustment lens.
- the varifocal lens is a lens that corrects the deviation in the focus group after adjusting the zoom ratio in the zoom group.
- Patent Document 1 discloses a varifocal interchangeable lens in which zoom adjustment and focus adjustment conventionally performed manually are performed by a motor.
- Patent Document 1 connects the lead wire for driving the motor and the signal line of the position detector with the control unit in order to control each motor in the zoom adjustment and focus adjustment of the varifocal interchangeable lens. There is a need. For this reason, in order to connect the drive lead wire for each motor, the signal line of the position detector, and the control unit, the number of wires increases and the configuration of the circuit also becomes complicated.
- control unit for driving the motor mounted on the varifocal interchangeable lens in Patent Document 1 is not provided on the varifocal interchangeable lens, wiring to the control unit is required for each motor. In addition, a space for installing a control unit near the varifocal interchangeable lens is also required. Further, since the connection between the motor and the control unit is made via the connector, there is a possibility that contact failure or the like at the connector terminal may occur.
- the present invention incorporates the control unit into the varifocal lens, controls each motor of the varifocal interchangeable lens with only the serial signal line for power supply and communication to the control unit, and wiring to each motor for driving the lens. And to simplify lens control.
- the CCTV lens according to the present invention comprises a lens body, a focus adjustment unit for moving a focus lens group incorporated in the lens body along an optical axis by a motor, and a zoom lens group incorporated in the lens body by a motor
- a zoom adjustment unit that moves along an axis an iris adjustment unit that changes the amount of light inside the lens body by changing a diaphragm built in the lens body using a motor
- the circuit of the control unit is composed of a flexible circuit.
- the flexible circuit of the control unit of the CCTV lens according to the present invention is characterized in that a microcomputer is provided on the circuit.
- the microcomputer of the control unit of the CCTV lens according to the present invention is connected to an external control device through a serial communication line, and controls the respective motors based on commands from the external control device. .
- the microcomputer of the CCTV lens according to the present invention stores the identification number of the lens body, checks whether the identification number transmitted from the external control device by the serial communication line matches, and the identification number is
- the present invention is characterized in that the command from the external control device is accepted when they coincide with each other.
- the microcomputer of the CCTV lens according to the present invention is configured to be able to store and read the number of steps from the reference position of each motor as position data of each lens of the focus adjustment unit and the zoom adjustment unit. It features.
- the microcomputer of the CCTV lens stores the operation history of each motor, and outputs the operation history of each motor to an external control device through the serial communication line.
- the microcomputer of the CCTV lens according to the present invention is characterized in that the zoom lens group and the focus lens group are controlled to be moved to predetermined positions based on a zoom switching command from an external control device. .
- the microcomputer of the CCTV lens according to the present invention is controlled by controlling the motor so as to be supplied with power from the outside and move the zoom lens group and the focus lens group to a preset position when the power is input. It features.
- the motor of the CCTV lens according to the present invention is a pulse motor, and is configured to apply a drive voltage directly to the input terminal of the pulse motor from the flexible circuit.
- the lens body of the CCTV lens according to the present invention is a varifocal lens which is a variable magnification optical system.
- the correction method of a CCTV lens according to the present invention is a correction method of a CCTV lens provided as a lens of a CCTV camera, wherein the CCTV lens includes a lens body and a focus lens group incorporated in the lens body by a pulse motor. It has a focus adjustment unit to move along the optical axis, a zoom adjustment unit to move the zoom lens group built in the lens body along the optical axis by a pulse motor, and a control unit to control the pulse motor
- the control unit is a coefficient of a polynomial that indicates a relationship for correcting the peripheral brightness of the lens with respect to the image height for each number of steps from the reference position of the pulse motor of the zoom adjustment unit as position data of the zoom lens group.
- the correction method of a CCTV lens according to the present invention is a correction method of a CCTV lens provided as a lens of a CCTV camera, wherein the CCTV lens includes a lens body and a focus lens group incorporated in the lens body by a pulse motor. It has a focus adjustment unit to move along the optical axis, a zoom adjustment unit to move the zoom lens group built in the lens body along the optical axis by the pulse motor, and a control unit to control each pulse motor
- the control unit is, as position data of the zoom lens group, data of coefficients of polynomials indicating a relationship of distortion of the lens to the image height for each number of steps from the reference position of the pulse motor of the zoom adjustment unit.
- the correction method of a CCTV lens according to the present invention is a correction method of a CCTV lens provided as a lens of a CCTV camera, wherein the CCTV lens includes a lens body and a focus lens group incorporated in the lens body by a pulse motor.
- a focus adjustment unit for moving along the optical axis, a zoom adjustment unit for moving the zoom lens group incorporated in the lens body along the optical axis by a pulse motor, and a lens by a pulse motor for the diaphragm inside the lens body It has an iris adjustment unit that adjusts the F number (Fno) to increase or decrease the light amount inside the lens body, and a control unit that controls each pulse motor, and the control unit is used as position data of the zoom lens group.
- the lens F number according to the number of steps from the reference position of the pulse motor of the zoom adjustment unit
- Data of lens resolution for (Fno) and data of Fno corresponding to the number of steps from the reference position of the pulse motor of the iris adjustment unit are stored, and the maximum resolution with respect to the number of steps from the reference position of the pulse motor of the zoom adjustment unit
- the step of selecting data of F number (Fno) the step of reading the data of the aperture position from the F number of the selected maximum resolution, driving the pulse motor of the iris adjustment unit to set the aperture to the optimum aperture position
- the control unit comprising the microcomputer having the communication function and the flexible circuit mounted with the motor drive circuit is provided in the CCTV lens (varifocal lens)
- the flexible circuit can communicate with the power supply and the external device.
- the CCTV lens can be easily controlled by inputting a command via the interface.
- the position of the lens can be managed by the microcomputer, it is possible to easily set the angle of view such as wide, standard, telephoto, etc., in which the focal length is changed and magnification is changed.
- the position detection of the motor is performed from the resistance value of a potentiometer, and since these are analog values, they were converted into digital values and position detection was calculated.
- a pulse motor for the motor open loop control is possible, and a position detector is not required, so the size around the lens body can be reduced.
- FIG. 1 It is a figure which shows the external appearance of a varifocal lens. It is a disassembled perspective view of a varifocal lens main body and each unit. It is an exploded perspective view of a varifocal lens main part. It is a figure which shows the external appearance of the flexible circuit provided along the outer edge of a varifocal lens. It is a block diagram which shows the control part comprised by the flexible circuit.
- A is a figure which shows a structure of the data of a byte unit in communication with a control part and an external control apparatus
- (b) is a figure which shows the structure of a communication packet format.
- FIG. 7 is a diagram showing the distance between the zoom lens group and focus lens group of the varifocal lens and the imaging surface of the CCTV camera. It is a figure which shows the flowchart of the motor control which controls in order of "zoom” by the control part in switching of the visual field from wide angle which is zoom operation to a telephoto, and "focus". It is a figure which shows the change of the brightness in the periphery of the lens with respect to image height.
- the CCTV lens according to the present invention will be described as a varifocal lens having a zoom adjustment unit and a focus adjustment unit.
- FIG. 1 shows the appearance of the varifocal lens
- FIG. 2 is an exploded perspective view of the varifocal lens body and each unit
- FIG. 3 is an exploded perspective view of the varifocal lens body
- FIG. 4 is a varifocal lens body
- FIG. 5 is a view showing the appearance of a flexible circuit provided along the outer edge of FIG. 5, and
- FIG. 5 is a block diagram showing a control unit constituted by the flexible circuit.
- the varifocal lens 1 as an example of the CCTV lens according to the present invention comprises a control unit 40 comprising a flexible circuit 41, a lens body 2, a focus gear unit 30, a zoom A flexible circuit 41 is provided along the outer edge of the lens body 2 and has a gear unit 31 and an iris unit 23.
- the lens body 2 includes a focus adjustment unit 5 and a zoom adjustment unit 15, as shown in FIG. First, the focus adjustment unit 5 of the lens body 2 will be described.
- the focus adjustment unit 5 adjusts the focus, and is positioned on the subject side, and moves the focus lens group 6 with the focusing lens attached to the lens frame, and the focus lens group 6 And a focus holding frame 8 for accommodating the focus lens group 6 and guiding the movement of the focus lens group 6 in the optical axis direction.
- the focus adjustment ring 5 is positioned at the outermost position in the focus adjustment unit 5, and the focus holding frame 8 is built in the focus rotation ring 7. Further, a focus lens group 6 is incorporated in the focus holding frame 8.
- FIG. 3 shows the order of combination of the focus lens group 6, the focus holding frame 8 and the focus rotation ring 7 by arrows shown by dotted lines.
- the arrow A indicates a state in which the focus lens group 6 is coupled to the focus holding frame 8, and the focus holding frame 8 incorporating the focus lens group 6 is coupled to the focus rotation ring 7 as indicated by the arrow B.
- the focus lens group 6 has an annular lens frame to which a lens is attached, and a moving pin 6a is provided on the outer periphery of the lens frame in a protruding manner.
- the focus lens group 6 is composed of a plurality of lenses, it may be composed of a single lens instead of the plurality of lenses.
- the focus rotation ring 7 has an annular shape, has a gear portion 7a at the rear of the outer periphery, and has a concave portion 7b formed in a spiral shape at the inner periphery.
- the focus rotation ring 7 is connected to a focus gear unit 30 to be described later and acts as a member for transmitting a driving force for moving the focus lens group 6.
- the focus holding frame 8 has a cylindrical shape, and a slit-like moving pin guide groove 8a formed parallel to the optical axis is provided on the outer peripheral surface of the cylinder so as to cut out the inner wall of the cylinder of the focus holding frame 8. .
- a metal fitting 8b for mounting the iris unit 23 shown in FIG.
- Both ends of the moving pin guide groove 8a of the focus holding frame 8 function as a stopper for a stroke in which the moving pin 6a of the focus lens group 6 engages and moves.
- a pulse motor 30a (see FIG.
- the number of steps is the number of pulses input to the forward or reverse input terminal of the pulse motor, where the number of steps of the pulse motor at the reference position is 0. For example, when the pulse number input in the forward direction of the pulse motor is counted by the counter to increase and the pulse number input in the reverse direction of the pulse motor is counted to decrease by the counter, It is equivalent.
- the moving pin 6 a of the focus lens group 6 is inserted into the moving pin guide groove 8 a of the focus holding frame 8. Further, the tip end portion of the moving pin 6 a of the focus lens group 6 is engaged with the concave portion 7 b provided on the inner peripheral portion of the focus rotation ring 7 rotatably attached to the outer periphery of the focus holding frame 8. Therefore, when the focus rotation ring 7 rotates, the moving pin 6a of the focus lens group 6 moves along the recess 7b of the focus rotation ring 7, and the focus pin group groove 8a of the focus holding frame 8 moves along the optical axis. Move in the direction.
- the zoom adjustment unit 15 is for adjusting the magnification, and the zoom lens group 16 with the zoom lens attached to the lens frame and the zoom lens group 16 are accommodated in the optical axis direction of the zoom lens group 16. It comprises a zoom holding frame 17 for guiding the movement and a zoom rotation ring 18 for generating a driving force for moving the zoom lens group 16.
- FIG. 3 shows the order of coupling of the zoom lens group 16, the zoom holding frame 17, and the zoom rotation ring 18 by arrows shown by dotted lines.
- An arrow C indicates a state in which the zoom lens group 16 is coupled to the zoom holding frame 17, and the zoom holding frame 17 incorporating the zoom lens group 16 is coupled to the zoom rotation ring 18 as indicated by the arrow D.
- the zoom lens group 16 has an annular lens frame to which a lens is attached, and a moving pin 16 a is provided on the outer periphery of the lens frame in a protruding manner.
- the zoom lens group 16 is composed of a plurality of lenses, it may be composed of a single lens instead of the plurality of lenses.
- the zoom holding frame 17 has a cylindrical shape, and a slit-like moving pin guide groove 17 a formed parallel to the optical axis is provided on the cylinder so as to cut out the inner wall of the cylindrical of the zoom holding frame 17.
- a bracket 17 b for coupling to the focus adjustment unit 5 is provided at the end of the zoom holding frame 17 coupled to the focus adjustment unit 5.
- a mount portion 17c for coupling with a CCTV camera is provided at the other end of the zoom holding frame 17. Both ends of the moving pin guide groove 17 a of the zoom holding frame 17 function as a stopper of the moving pin 16 a of the zoom lens group 16.
- a pulse motor 31a see FIG.
- the zoom rotation ring 18 has an annular shape, has a gear portion 18a on a part of the outer peripheral surface, and has a recess 18b formed on the inner peripheral portion.
- the zoom rotation ring 18 is connected to a zoom gear unit 31 to be described later, and acts as a member for transmitting a driving force for moving the zoom lens group 16.
- the moving pin 16 a of the zoom lens group 16 passes through the moving pin guide groove 17 a of the zoom holding frame 17, and the tip of the moving pin 16 a engages with the recess 18 b of the inner peripheral portion of the zoom rotation ring 18. It is correct. Therefore, when the zoom rotation ring 18 on the outer periphery rotates, the moving pin 16a of the zoom lens group 16 moves along the recess 18b of the zoom rotation ring 18 and the zoom lens group 16 is moved by the moving pin guide groove 17a of the zoom holding frame 17. Move in the optical axis direction.
- the focus adjustment unit 5 and the zoom adjustment unit 15 are fixed by screwing a screw hole (not shown) provided in the focus adjustment unit 5 and a hole of the bracket 17 b.
- the gear portion 7 a of the focus rotation ring 7 is engaged with the focus gear unit 30.
- the focus gear unit 30 shown in FIG. 2 incorporates a pulse motor 30a and a gear, and has a gear train (not shown) including a gear attached to the rotation shaft of the pulse motor 30a.
- the rotation of the pulse motor 30a of the focus gear unit 30 is transmitted to the gear portion 7a of the focus rotation ring 7 of the focus adjustment unit 5 via the gear train, and the focus rotation ring 7 is rotated.
- the moving direction of the focus lens group 6 is determined by the rotation direction of the pulse motor 30a. Since the step angle of the rotation shaft for one pulse is determined for the pulse motor 30a, the rotation angle of the rotation shaft is determined by the number of pulses, and the gear ratio of the gear train of the focus gear unit 30 and the gear portion of the focus rotation ring 7 The amount of movement of the focus lens group 6 with respect to the number of pulses of the pulse motor 30a is determined by the gear ratio 7a. Further, by setting the number of pulses of the pulse motor 30a as a count value from the reference position, the position of the focus lens group 6 is determined by the number of steps from the reference position of the pulse motor 30a.
- the gear portion 18 a of the zoom rotation ring 18 is engaged with the zoom gear unit 31.
- the zoom gear unit 31 shown in FIG. 2 incorporates a pulse motor 31a and a gear, and has a gear train 32 including a gear attached to the rotation shaft of the pulse motor 31a.
- the rotation of the motor of the zoom gear unit 31 is transmitted to the gear portion 18a of the zoom rotation ring 18 of the zoom adjustment unit 15 via the gear train 32, and the zoom rotation ring 18 shown in FIG. 3 rotates.
- the moving pin 16a of the zoom lens group 16 moves along the recess 18b of the zoom rotation ring 18, and the movement pin guide groove 17a of the zoom holding frame 17 moves the zoom lens group 16 to the optical axis. Move in the direction.
- the moving direction of the zoom lens group 16 is determined by the rotation direction of the pulse motor 31a. Since the step angle of the rotating shaft for one pulse is determined for the pulse motor 31a, the angle at which the rotating shaft rotates is determined by the number of pulses, and the gear ratio of the gear train of the zoom gear unit 31 and the gear portion of the zoom rotation ring 18 The amount of movement of the zoom lens group 16 with respect to the number of pulses of the pulse motor 31a is determined by the gear ratio 18a. Further, by setting the number of pulses of the pulse motor 31a as a count value from the reference position, the position of the zoom lens group 16 is determined by the number of steps from the reference position of the pulse motor 31a.
- the iris unit 23 shown in FIG. 2 includes an iris adjustment unit 24 that adjusts the amount of light from the focus lens group 6 as an objective lens.
- the iris adjustment unit 24 has a pulse motor 24a and an aperture blade 24b.
- the iris adjustment unit 24 adjusts the light amount by controlling the sliding amount of the two diaphragm blades 24b configured to be linearly slidable on a substrate having an opening forming an optical path by the pulse motor 24a. I have to.
- the iris unit 23 further includes an optical filter unit 25 for inserting an optical filter (ND filter) on the light path.
- the optical filter has a transmission characteristic according to the wavelength, and here, an infrared cut filter that blocks light in the infrared region is used.
- the insertion of the optical filter into the optical path and the extraction operation from the optical path are performed by the DC motor 25a as an actuator for driving the optical filter.
- the optical filter unit 25 for inserting an optical filter (ND filter) on the optical path may not be provided depending on the environment in which the varifocal lens 1 is used.
- the iris adjustment unit 24 and the optical filter unit 25 are attached to the metal fitting 8 b shown in FIG. 3 so that they are interposed between the focus adjustment unit 5 and the zoom adjustment unit 15 of the lens body 2. It is fixed.
- the varifocal lens 1 has one pulse motor for controlling the focus adjustment unit 5, the zoom adjustment unit 15, and the iris adjustment unit 24, and the optical filter unit 25 performs one DC motor 25 a. It has one.
- the control unit 40 shown in FIGS. 1 and 4 controls the position of the focus lens group 6 of the focus adjustment unit 5 on the optical axis, the position of the zoom lens group 16 of the zoom adjustment unit 15 on the optical axis, and the iris adjustment unit.
- the control unit 40 manages the moving state of the optical filter of the optical filter unit 25 incorporated in the iris unit 23 into and out of the optical path according to the driving state of the direct current motor 25a. The driving state is always stored.
- FIG. 4 is a view showing the appearance of the flexible circuit provided along the outer edge of the lens body 2
- FIG. 5 is a block diagram showing the control unit constituted by the flexible circuit.
- the control unit 40 is provided on the flexible substrate 42 with components such as an IC chip such as the microcomputer 43 and the motor driver circuit 44 and resistors (not shown) and capacitors (not shown). It consists of a flexible circuit 41.
- a substrate made of a flexible member such as a film and the like for mounting components is referred to as a flexible substrate 42, and a substrate (circuit substrate) forming a circuit by mounting components on the flexible substrate 42 is referred to as a flexible circuit 41.
- the flexible substrate 42 is made of a polyimide film or the like having high flexibility, it can be curved or bent and provided on the surface of the lens main body 2 except the area where the IC chip and parts are provided.
- the control unit 40 can be configured in a state in which a partial region of the flexible substrate 42 is bent at about 90 degrees by bending the dotted line portion illustrated on the flexible substrate 42.
- the microcomputer 43 of the control unit 40 has a CPU, a memory 43a, and an input / output unit, and the memory 43a performs communication with the outside, drive control of the motor, management of the motor, etc. Programs are built in.
- the memory 43a of the microcomputer 43 a writable and readable non-volatile memory is used. Thus, the data and the like written in the memory 43a are stored even when the power is turned off.
- the input / output unit has a communication circuit for communicating with the outside, and an output circuit for outputting to the motor driver circuit 44.
- Communication between the control unit 40 and an external control device 60 is performed by serial communication.
- the input / output terminal 47 of the control unit 40 is connected to a power supply supplied from the outside, and a line of a reception signal and a transmission signal for the communication circuit.
- the input / output terminal 47 of the control unit 40 is provided at the end of the flexible circuit 41 shown in FIG. 4 in the longitudinal direction.
- Wiring patterns of voltages to be supplied to each pulse motor are formed on the flexible circuit 41 shown in FIG. 4, and input terminals of the pulse motor are connected by solder or the like to lands 48 provided at the ends of the wiring patterns. ing. Further, the input terminal of the DC motor 25a of the optical filter unit 25 is connected to the land 49 of the wiring pattern for voltage supply by soldering. Further, on the flexible circuit 41, a land 50 for fixing the flexible circuit 41 to the lens main body 2 is provided.
- the drive voltage output from each switching circuit 44a of the motor driver circuit 44 of the control unit 40 is input to the pulse motors 31a, 30a, 24a and the DC motor 25a.
- the pulse motors 31a, 30a, and 24a have two input terminals for each of the A phase and the B phase, and a voltage is supplied from the motor driver circuit 44 to a total of four input terminals.
- voltage supply to each motor is directly performed from the pattern of the flexible circuit 41.
- the circuit board of the control unit is configured by a flexible circuit, and provided on the lens body, and the drive voltage is applied directly from the flexible circuit to the input terminal such as a pulse motor, thereby supplying voltage to the motor. Since it is not necessary to use a connector, it is possible to prevent contact failure and the like caused by the connector. Furthermore, conventionally, the drive wiring for a total of 14 motors of 12 for the wiring of three pulse motors and 2 for the DC motor is required, but the wiring of the motor by the connector becomes unnecessary.
- communication with an external control device is a serial communication method, the number of signal lines with the external control device can be reduced.
- FIGS. 6 and 7 are diagram showing the configuration of data in units of bytes in communication with the control unit and an external control device
- FIG. 6 (b) is a diagram showing the configuration of a communication packet format
- FIG. 7 (a) is a diagram Fig. 7 (b) shows a communication form in which the external control device requests data of the number of steps from the reference position of the pulse motor as a lens position to the control unit. It is a figure which shows a form.
- the control unit 40 and the external control device 60 have the same communication speed set in advance, and serial communication is performed using data in byte units.
- data in units of bytes are data bits 7 (shown as START in FIG. 6 (a) and data bits 0 (shown as B0 in FIG. 6 (a)). It consists of 8 bit commands or data up to 6 (a) and B7 (shown) and stop bits (shown as STOP in FIG. 6 (a)).
- ASCII codes are used for control codes, commands, data and the like.
- the communication packet format is, as shown in FIG.
- STX Start of Text
- ETX End of Text
- STX BCC Block Checking Code
- STX consists of one byte and is assigned the ASCII code 02h. Note that h in 02h is a symbol indicating that 02 is a hexadecimal number.
- Each command consists of one byte, and an ASCII code is assigned to each command.
- the motor number consists of one byte, and an ASCII code is assigned to each motor.
- the pulse motor 31a for moving the zoom lens group 16 of the zoom adjustment unit 15 is assigned 31h indicating the number 1
- the pulse motor 30a for moving the focus lens group 6 of the focus adjustment unit indicates the number 2 32h is assigned.
- the pulse motor 24a for controlling the diaphragm blade 24b of the iris adjustment unit 24 is assigned 33h indicating the number 3
- the DC motor 25a driving the optical filter unit 25 is assigned 34h indicating the number 4.
- the data part has a variable length, to which data of ASCII code is assigned.
- ETX consists of one byte and is assigned the ASCII code 03h.
- BCC consists of one byte and is a value obtained by adding data from STX to ETX.
- the control unit 40 sends back an ACK (ACKnowledge) or response data.
- ACK ACKnowledge
- response data When a communication error occurs in reception, a NACK (Negative ACKnowledge) is output to request the transmission source to retransmit a command or the like. Further, after the output of the command or the like, for example, when the response can not be confirmed in a predetermined time, the transmission source outputs the command or the like again as a non-response.
- the external control device 60 outputs a command (53h) to the control unit 40 together with the motor number (31h).
- the microcomputer 43 of the control unit 40 reads data of the number of steps from the reference position of the pulse motor 31a for the zoom lens group 16 from the memory 43a.
- the motor number (31 h) and the 3-byte data obtained by converting the read data into ASCII are returned to the external control device 60 in the communication format shown in FIG. 7B.
- the external control device 60 can confirm the position of the zoom lens group 16 by the number of steps from the reference position of the pulse motor 31 a of the varifocal lens 1.
- control unit 40 in the varifocal lens 1, management etc. of the motor for driving the lens is unified, and information about the lens is stored in the control unit 40, and the external control device By reading out the information from 60, external control can be easily performed.
- control unit 40 stores the identification number of the varifocal lens 1 and stores the operation history of each motor, so that the external control device 60 controls the control unit 40 of each motor of the varifocal lens 1.
- the operation history can be read out and used as information such as maintenance.
- the varifocal lens 1 by managing the varifocal lens 1 by the identification number, for example, by adding the identification number of the varifocal lens 1 to the communication packet format, it can be managed by the identification number for each varifocal lens. This makes it possible to share a communication line with another varifocal lens 1, thereby simplifying the communication line, and collectively controlling a plurality of varifocal lenses with an external controller 60. Can.
- the varifocal lens 1 needs to adjust the adjustment of the zoom size and the focus position individually. That is, the varifocal lens 1 first adjusts the zoom size by moving the zoom lens group 16 in the optical axis direction, and moves the focus lens group 6 to move the zoom lens group 16 so that the focus position is adjusted. Correct the deviation (so-called out-of-focus). As described above, the varifocal lens 1 needs to correct the shift of the focus position after adjusting the zoom size.
- FIG. 8 is a diagram showing the distance between the zoom lens group and the focus lens group of the varifocal lens and the imaging surface of the CCTV camera.
- the cover glass 35 having a thickness of 3 mm is disposed on the front surface on the imaging surface 36 side
- the distance between the zoom lens group 16 and the imaging surface 36 of the CCTV camera is A
- the focus lens group 6 and the CCTV camera A diagram in which the distance to the imaging plane 36 of the above is B is shown.
- the distance to the end of each lens group on the CCTV camera side is used.
- the position of the zoom lens group 16 of the varifocal lens 1 as an example of the CCTV lens according to the present invention is determined based on the number of steps from the reference position of the pulse motor 31 a for the zoom lens group 16. For example, each position (corresponding to the distance A shown in FIG. 8) of the zoom lens group 16 in wide angle, standard, and telephoto is managed by the number of steps from the reference position of the pulse motor 31a. For example, the distance A between the zoom lens group 16 at the wide angle and the imaging surface 36 of the CCTV camera is the smallest, and the distance A between the zoom lens group 16 at the telephoto and the imaging surface 36 of the CCTV camera is the largest.
- the position of the focus lens group 6 for focus adjustment at each position of the zoom lens group 16 is a step from the reference position of the pulse motor 30a for focus adjustment. It is determined by the number.
- the number of steps from the reference position of the pulse motor 31a of the zoom lens group 16 in wide angle, standard, and telephoto, and the number of steps from the reference position of the pulse motor 30a of the focus lens group 6 for adjusting focus corresponding to this are varifocal lenses 1 is stored in the memory 43 a of the control unit 40.
- the position of the focus lens group 6 at each position of the zoom lens group 16 is stored in advance.
- FIG. 9 is a flowchart of motor control for controlling in the order of “zoom” and “focus” by the control unit in switching of the field of view from wide angle to telephoto which is zoom operation.
- the control unit 40 first checks whether a command has been received from the external control device 60, and when there is no input of a command, it waits in a command receivable state (step S1). When the control unit 40 receives a command (Yes in step S1), the control unit 40 checks whether the command has been received normally without an error (step S2).
- step S2 When a communication error occurs in step S2 (No in step S2), "NACK" is output to the external control device 60, and after error processing, the process proceeds to step S1.
- step S4 analysis of the command is performed (step S4). It is checked whether the command from the external control device 60 is the designation of the zoom mode, that is, the designation of wide angle, normal or telephoto (step S5). Note that with the zoom mode specification, position data of the zoom lens group 16 and the focus lens group 6 at wide angle, standard and telephoto are stored in the control unit 40 in advance, and each pulse is based on the stored position data. It controls the motor.
- step S5 when the command is the designation of the zoom mode (Yes in step S5), the position data of the zoom lens group 16 corresponding to the zoom mode stored in advance in the memory 43a of the microcomputer 43 is read out and designated position data (Hereinafter, designated position data is shown as MS).
- designated position data MS of the zoom lens group 16 is defined by the number of steps from the reference position of the pulse motor 31a (step S6).
- step S5 if the zoom mode is not specified at step S5 (No at step S5), the number of steps from the reference position of the pulse motor 31a, which is data of the specified position of the zoom lens group 16, is transmitted from the external control device 60.
- the received data is set as designated position data MS of the zoom lens group 16 (step S7).
- the number of steps from the reference position of the pulse motor 31a is read out from the memory 43a as current position data indicating the current position of the zoom lens group 16 (hereinafter, the current position data is illustrated as Ma) (step S8).
- the movement amount of the zoom lens group 16 is calculated. The movement amount is calculated by subtracting the current position data Ma from the designated position data MS.
- the rotation direction of the pulse motor 31a moving direction of the zoom lens
- the number of pulses of the pulse motor 31a moving amount of the zoom lens group 16
- the pulse motor 31a is driven based on the calculated movement amount of the zoom lens group 16 (step S10).
- designated position data MS which is data of a movement destination, is stored in the memory 43a as current position data Ma. Thereby, the zoom lens group 16 moves to the designated position.
- the focus control reads out the number of steps from the reference position of the pulse motor 30a as designated position data of the focus lens group 6 corresponding to the position MS to which the zoom lens group 16 has been moved preset from the memory 43a (step S11). ). That is, position data to be moved by the focus lens group 6 for adjusting the focus by the movement of the zoom lens group 6 is set.
- the movement amount is calculated by subtracting the current position data from the designated position data.
- the direction of rotation of the pulse motor 30a (moving direction of the focus lens) and the number of pulses of the pulse motor 30a (moving amount of the focus lens) are determined by subtraction (step S12).
- the pulse motor is driven based on the calculated movement amount of the focus lens (step S13).
- designated position data which is data of a movement destination of the focus lens, is stored in the memory 43a as current position data (step S14).
- the varifocal lens 1 is easily adjusted in focus (image formation) even when the zoom (magnification) operation is performed as in the case of the zoom lens, so that the handling becomes easy.
- control unit 40 of the varifocal lens 1 controls the pulse motor to a position where the zoom lens group and the focus lens group are preset when the power is input, for example, a position corresponding to either wide angle or standard or telephoto. It is also possible.
- lens peripheral light amount correction processing relating to lens peripheral light amount correction, lens distortion aberration correction, and lens resolution up correction.
- lens peripheral light amount correction will be described with reference to FIG. 10 and FIG.
- FIG. 10 is a diagram showing a change in brightness around the lens with respect to the image height
- FIG. 11 is a flowchart showing a process related to peripheral light amount correction.
- the brightness (peripheral light amount) at the periphery of the lens decreases as the inclination of the incident light to the optical axis increases.
- the lens peripheral light amount correction is a process for correcting the decrease in brightness around the lens because the brightness of the image decreases as it gets closer to the periphery of the screen. As shown in FIG. 10, the brightness around the lens decreases as the image height increases.
- the value of the light amount of the lens with respect to the image height is obtained in advance. The value of this light quantity is for each focal length of the zoom lens, that is, the wide-angle (WIDE shown in FIG. 10) focal length is 3.44 mm, the standard (FIG.
- FIG. 10 shows MIDDLE) focal length is 5.33 mm and the telephoto (figure TELE and 10) 10) The focal length is determined for each of 11.56 mm. Also, as shown in FIG. 10, even if the values of the light quantity are prepared for the middle of wide angle and standard (shown as WM in FIG. 10) and the middle of standard and telephoto (shown as MT in FIG. 10). Good.
- the image height is 0, that is, the light quantity at the center of the lens is 1, and the value of the light quantity is less than 1 except at the center of the lens.
- the value of light quantity 0.8 for a certain value of the image height is 80% brightness compared to the center of the lens, and by correcting the quantity of light quantity by 1.25 as a correction, the lens It has the same brightness as the center of
- the brightness of image data output from the camera and stored in an external memory or the like is corrected based on the image height, the size of the imaging area of the camera, and the signal from the camera.
- the brightness of the image data is corrected for each two-dimensional XY coordinate on the imaging surface corresponding to the image height from the center position of the imaging surface. Thereby, the image displayed on the monitor or the like is corrected.
- the change of the value of the light quantity with respect to the image height shown in FIG. 10 is expressed by the formula 1 consisting of polynomials for each zoom mode, and the peripheral light quantity coefficients A, B and C of the formula 1 are calculated in advance.
- the peripheral light amount correction is performed by transferring the image from the camera to a computer (PC) incorporating a processing program and performing it on the PC.
- PC computer
- the peripheral light amount correction will be described below using the flowchart shown in FIG.
- step S20 data on the number of steps from the reference position of the pulse motor 31a for the zoom lens group 16 is read out to confirm the position of the zoom lens group 16 (step S20). That is, it is confirmed whether it is in the wide (WIDE), standard (MIDDLE) or telephoto (TELE) state (step S21), and neither wide nor standard or telephoto is applicable (No in step S21). Do not process correction.
- WIDE wide
- MIMDLE MIDDLE
- TELE telephoto
- step S21 neither wide nor standard or telephoto is applicable
- step S21 data of peripheral light amount coefficients A, B, C according to the position of the zoom lens group 16 is read out from the control unit 40 (step S22).
- an image from a camera coupled to the varifocal lens 1 is acquired, and temporarily stored as image data in an external memory or the like (step S23).
- the image data is transferred to the PC, and the peripheral light amount correction program is executed based on the peripheral light amount coefficient (step S24).
- the image data subjected to the correction processing is output to the monitor, and is stored in the memory as image data (step S25). Thereby, the peripheral light amount correction of the lens is performed, and the entire image is corrected to uniform brightness.
- the lens distortion correction is a process for correcting image distortion due to the lens.
- distortion aberration correction of the lens will be described with reference to FIG. 12 and FIG.
- FIG. 12 is a diagram showing an example of distortion aberration D (%) with respect to an ideal image height at wide angle, standard or telephoto of the varifocal lens 1
- FIG. 13 is a flowchart showing processing concerning distortion aberration correction.
- the distortion of the lens for each focal length of the lens that is, the image height for each of the zoom mode wide angle, standard and telephoto, is previously determined.
- distortion aberration regarding the middle between wide angle (WIDE) and standard (MIDDLE) (M1, M2, M3 and M4 shown in FIG. 12 from WIDE to MIDDLE) may be prepared.
- the lens has a distortion that is a distortion in which the similarity between the image of the object in a plane perpendicular to the optical axis and the image on the image plane perpendicular to the optical axis does not hold.
- the lenses differ in the magnitude of distortion produced depending on the position of the zoom lens, ie wide angle, normal or telephoto.
- the distortion aberration D of the lens is expressed as a percentage of the change in image size (change in image height) at each focal length of the zoom mode to the ideal image height as shown in Equation 2.
- Distortion aberration D (%) (y-y ') / y' x 100 (%) ⁇ ⁇ ⁇ (Equation 2) Where y is the actual chief ray image height and y 'is the ideal image height.
- distortion aberration D at a wide angle at an ideal image height of 2.1 mm is -20.7%
- distortion aberration D at a standard is -3.1%
- the distortion shown in FIG. 12 is a negative value, and in the case of a square object, it is a distortion of a tar shape.
- the correction is necessary since the distortion aberration D at the wide angle is large and distorted as an image, the correction is necessary.
- the distortion at the image height of 0, that is, at the center of the lens is 100%
- the value of the distortion is a value less than 100% other than the center of the lens.
- the actual image height is 20% distorted with respect to the ideal image height, that is, a value smaller than the ideal image height.
- the distortion of the position is corrected by multiplying the corresponding position by 1.25 as a correction value.
- Equation 3 The change in the value of the distortion aberration D with respect to the image height shown in FIG. 12 is expressed by Equation 3 consisting of polynomials for each zoom mode, and the coefficients E, F, G, H, I of Equation 3 are calculated in advance It is stored in the 40 memory 43a.
- Equation 3 E ⁇ x 4 + F ⁇ x 3 + G ⁇ x 2 + H ⁇ x + I (Equation 3)
- y distortion aberration value (D in Equation 2)
- x image height
- E, F, G, H, I coefficient
- E ⁇ 0.0119
- F ⁇ 0 .0686
- G -0.8461
- H 0.023
- I -0.0012
- PC computer
- FIG. 13 is a flowchart showing processing relating to distortion aberration correction.
- data on the number of steps from the reference position of the pulse motor 31a for the zoom lens group 16 is read out to confirm the position of the zoom lens group 16 (step S30). That is, it is confirmed whether the state is wide (WIDE), standard (MIDDLE) or telephoto (TELE) (step S31), and neither wide nor standard or telephoto is applicable (No in step S31). Do not process correction.
- WIDE wide
- MIDDLE standard
- TELE telephoto
- step S32 data of coefficients E, F, G, H, I according to the position of the zoom lens group 16 are read out from the control unit 40 (step S32) .
- an image from a camera coupled to the varifocal lens 1 is acquired, and temporarily stored as image data in an external memory or the like (step S33).
- the image data is transferred to the PC, and the distortion correction program is executed based on the data of the coefficients E, F, G, H, I (step S34).
- the corrected image data is output to the monitor and stored in the memory (step S35). Thereby, distortion aberration correction of the lens is performed, and the entire image is corrected to an image without distortion.
- FIG. 14 shows an example of the relationship between Fno and MTF resolution at wide angle of varifocal lens 1.
- FIG. 15 shows the change of Fno with respect to the number of steps from the reference position of the pulse motor of the iris adjustment unit of varifocal lens 1.
- FIG. 16 is a flowchart showing processing relating to resolution up correction.
- the varifocal lens 1 varies in the MTF (Modulation Transfer Function contrast transfer function) resolution of the lens with respect to an f-number (shown as Fno) depending on the wide angle, standard or telephoto, ie, focal length.
- the F number (Fno) is represented by the ratio of the focal length to the diameter of the effective luminous flux incident on the lens, and indicates the brightness of the lens.
- the optimization of the MTF resolution of the lens is to adjust the position of the iris of the iris adjustment unit 24 so that the MTF resolution is maximized at the focal length of the zoom lens at wide angle, standard or telephoto.
- the iris is controlled by the pulse motor 24 a in the iris adjustment unit 24, and Fno with respect to the number of steps from the reference position of the pulse motor 24 a is defined.
- Fno indicating the maximum MTF resolution at each position of the zoom lens is determined, and the number of steps from the reference position of the pulse motor 24a for adjusting the aperture position of the iris adjustment unit 24 for setting Fno is determined.
- FIG. 14 is a diagram showing an example of the relationship between Fno and MTF resolution at the wide angle of the varifocal lens 1.
- the MTF maximum resolution (position shown by a circle in FIG. 14) of the varifocal lens 1 at the wide angle is when Fno is 4.
- Fno at the MTF maximum resolution at standard and telephoto is determined, and Fno is stored in the control unit 40 for each of the wide-angle, standard and telephoto zoom modes.
- FIG. 15 is a diagram showing a change in Fno with respect to the number of steps from the reference position of the pulse motor 24 a of the varifocal lens 1.
- Fno is 4 (circled in FIG. 15) based on Fno in the wide angle (shown as WIDE shown in FIG. 15) and the number of steps from the reference position of the pulse motor 24a which are set in advance.
- the pulse motor 24a is driven to the position shown by.
- the number of steps from the reference position of the pulse motor 24a at this time is 51.
- the control unit 40 stores the number of steps from the reference position of the pulse motor of the iris adjustment unit with respect to Fno for each zoom mode.
- FIG. 16 is a flowchart showing processing relating to resolution up correction.
- step S40 data on the number of steps from the reference position of the zoom lens pulse motor 24a is read out to confirm the position of the zoom lens group 16 (step S40). That is, it is confirmed whether the state is wide (WIDE), normal (MIDDLE) or telephoto (TELE) (step S41), and when neither wide nor standard nor telephoto corresponds (No at step S41), resolution is increased. Do not process In the case of either wide, standard or telephoto (Yes in step S41), Fno of the maximum resolution corresponding to the position of the zoom lens group 16 is selected (step S42).
- position data of the diaphragm blade 24b which is the number of steps from the reference position of the pulse motor 24a according to the position of the zoom lens corresponding to the selected Fno, is read out (step S43).
- the data of the current value of the pulse motor 24a indicating the current position of the diaphragm blade 24b is read (step S44), and the pulse motor 24a of the iris adjustment unit is driven to set the diaphragm blade 24b to a predetermined diaphragm position. (Step S45).
- the CCTV lens of the present invention can obtain a clear image with less distortion by performing lens peripheral light amount correction, lens distortion aberration correction, and lens resolution up correction.
- the control unit 40 replaces the flexible substrate 42 with a substrate (not shown) made of a hard material having a low refractive index, a lens main body Molded in such a shape as to be in intimate contact with the periphery of the semiconductor device 2.
- a substrate made of a hard material having a low refractive index
- a lens main body Molded in such a shape as to be in intimate contact with the periphery of the semiconductor device 2.
- components such as an IC chip such as the microcomputer 43 and motor driver circuit 44 and resistors (not shown) and capacitors (not shown) are provided. It may be mounted around the lens body 2.
- the CCTV lens of the present invention can be miniaturized as compared with the prior art, and can be easily controlled from the outside, so it can also be used as a network camera.
- the CCTV lens of the present invention can be used as a lens for an on-vehicle camera.
- an on-vehicle camera For example, by mounting a camera on the front of a car and switching the angle of view according to the vehicle speed, an accurate image according to the situation can be obtained.
- driver assistance can be provided by providing an appropriate view at high speed from a plurality of previously set views provided at the rear of the vehicle.
- control unit comprising the microcomputer having the communication function and the flexible circuit mounted with the motor drive circuit
- the control unit comprising the microcomputer having the communication function and the flexible circuit mounted with the motor drive circuit
- communication with the flexible circuit from the power supply and the outside is performed.
- the CCTV lens can be easily controlled by inputting a command via.
- communication with an external control device is a serial communication method, the number of signal lines with the external control device can be reduced.
- the angle of view such as wide, standard, telephoto, etc. can be easily set by changing the focal length, so that the optimum image can be obtained by the microcomputer. You can get
- the position detection of the motor is performed from the resistance value of a potentiometer, and since these are analog values, they were converted into digital values and position detection was calculated.
- a pulse motor for the motor open loop control is possible, and a position detector is not required, so the size around the lens body can be reduced.
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Abstract
Description
図1は、バリフォーカルレンズの外観を示す図、図2は、バリフォーカルレンズ本体及び各ユニットの分解斜視図、図3は、バリフォーカルレンズ本体の分解斜視図、図4は、バリフォーカルレンズ本体の外縁に沿って設けられるフレキシブル回路の外観を示す図、図5は、フレキシブル回路により構成された制御部を示すブロック図である。
図3に示すようにフォーカス調整部5は、フォーカスの調整を行うものであり、被写体側に位置し、レンズ枠にフォーカス用のレンズを取り付けたフォーカスレンズ群6と、フォーカスレンズ群6を移動するための駆動力を発生するフォーカス回転リング7と、フォーカスレンズ群6を収納し、フォーカスレンズ群6の光軸方向への移動を案内するフォーカス保持枠8とを有する。
一方、ズーム調整部15は変倍の調整を行うものであり、レンズ枠にズーム用のレンズを取りつけたズームレンズ群16と、ズームレンズ群16を収納しズームレンズ群16の光軸方向への移動を案内するズーム保持枠17と、ズームレンズ群16を移動するための駆動力を発生するズーム回転リング18とからなる。
フォーカス回転リング7のギア部7aは、フォーカスギアユニット30と係合している。図2に示すフォーカスギアユニット30には、パルスモータ30aとギアが内蔵されており、パルスモータ30aの回転軸に取り付けたギアを含むギア列(図示せず)を有している。フォーカスギアユニット30のパルスモータ30aの回転が、ギア列を介してフォーカス調整部5のフォーカス回転リング7のギア部7aに伝達されて、フォーカス回転リング7が回転する。
また、ズーム回転リング18のギア部18aは、ズームギアユニット31と係合している。図2に示すズームギアユニット31には、パルスモータ31aとギアが内蔵されており、パルスモータ31aの回転軸に取り付けたギアを含むギア列32を有している。ズームギアユニット31のモータの回転が、ギア列32を介してズーム調整部15のズーム回転リング18のギア部18aに伝達されて、図3に示すズーム回転リング18が回転する。ズーム回転リング18が回転することにより、ズームレンズ群16の移動ピン16aがズーム回転リング18の凹部18bに沿って移動し、ズーム保持枠17の移動ピン案内溝17aによってズームレンズ群16が光軸方向に移動する。
図2に示すアイリスユニット23は、対物レンズとしてのフォーカスレンズ群6からの光量を調整するアイリス調整部24を有している。アイリス調整部24は、パルスモータ24aと絞り羽根24bとを有している。アイリス調整部24は、光路を形成する開口部を有した基板上に直線スライド可能に構成された2枚の絞り羽根24bのスライド量をパルスモータ24aにより制御することにより、光量の調整を行うようにしている。
次に、フォーカス調整部5、ズーム調整部15及びアイリス調整部24の各調整部のパルスモータ及び光学フィルタ部25の直流モータ25aを制御、管理する制御部について図4及び図5を用いて説明する。図4は、レンズ本体2の外縁に沿って設けられるフレキシブル回路の外観を示す図、図5は、フレキシブル回路により構成された制御部を示すブロック図である。
次に、制御部40及び外部の制御装置との通信形態について図6及び図7を用いて説明する。図6(a)は、制御部及び外部の制御装置との通信におけるバイト単位のデータの構成を示す図、図6(b)は、通信パケットフォーマットの構成を示す図、図7(a)は、外部の制御装置から制御部に対して、レンズ位置としてのパルスモータの基準位置からのステップ数のデータを要求する通信形態を示す図、図7(b)は、制御部からの応答の通信形態を示す図である。
次に、バリフォーカルレンズのズーム(変倍)操作によるフォーカスの自動調整について述べる。バリフォーカルレンズ1は、ズームの大きさ及びフォーカス位置の調整を個別に調整する必要がある。すなわち、バリフォーカルレンズ1は、まずズームレンズ群16を光軸方向に移動することによりズームの大きさを調整して、フォーカスレンズ群6を移動することによりズームレンズ群16の移動によるフォーカス位置のずれ(いわゆるピンボケ)を修正する。このように、バリフォーカルレンズ1は、ズームの大きさを調整後に、フォーカス位置のずれを修正する必要がある。
次に、レンズ周辺光量補正、レンズの歪曲収差補正及びレンズの解像度アップ補正に関する処理について説明する。最初に、レンズ周辺光量補正について図10、図11を用いて説明する。図10は、像高に対するレンズの周辺での明るさの変化を示す図、図11は、周辺光量補正に関する処理を示すフローチャートである。
但し、y:光量の値、x:像高 A、B、C:周辺光量係数
例えば、広角(WIDE)では、式1のA=-0.0248、B=-0.1334、C=0.9979をメモリ43aに記憶しておく。
レンズの歪曲収差補正は、レンズによる像の歪みを補正するための処理である。次に、レンズの歪曲収差補正について、図12、図13を用いて説明する。図12は、バリフォーカルレンズ1の広角、標準又は望遠における理想像高に対する歪曲収差D(%)の一例を示す図、図13は、歪曲収差補正に関する処理を示すフローチャートである。
歪曲収差D(%)=(y-y’)/y’×100(%) ・・(式2)
但し、yは実際の主光線像高、y’は理想像高である。
但し、y:歪曲収差の値(式2のD)、x:像高、E、F、G、H、I:係数
例えば、標準(MIDDLE)では、E=-0.0119、F=-0.0686、G=-0.8461、H=0.023、I=-0.0012をメモリ43aに記憶しておく。
次に、解像度アップ補正について、図14乃至図16を用いて説明する。図14は、バリフォーカルレンズ1の広角におけるFnoとMTF解像度との関係の一例を示す図、図15は、バリフォーカルレンズ1のアイリス調整部のパルスモータの基準位置からのステップ数に対するFnoの変化を示す図、図16は、解像度アップ補正に関する処理を示すフローチャートである。
また、本発明は、高い屈曲性を有するフレキシブル回路41について説明したが、制御部40は、フレキシブル基板42に代えて、屈折率が低い硬質の材質からなる基板(図示せず)を、レンズ本体2の周囲に密着するような形状で成型し、前記基板上に、マイクロコンピュータ43、モータドライバ回路44等のICチップ及び抵抗(図示せず)、コンデンサ(図示せず)等の部品が設け、レンズ本体2の周囲に装着するようにしても良い。
2 レンズ本体
5 フォーカス調整部
6 フォーカスレンズ群
6a 移動ピン
7 フォーカス回転リング
7a ギア部
7b 凹部
8 フォーカス保持枠
8a 移動ピン案内溝
8b 金具
15 ズーム調整部
16 ズームレンズ群
16a 移動ピン
17 ズーム保持枠
17a 移動ピン案内溝
17b 金具
17c マウント部
18 ズーム回転リング
18a ギア部
18b 凹部
23 アイリスユニット
24 アイリス調整部
24a パルスモータ(絞り用)
24b 絞り羽根
25 光学フィルタ部
25a 直流モータ(アクチュエータ)
30 フォーカスギアユニット
30a パルスモータ(フォーカス用)
31 ズームギアユニット
31a パルスモータ(ズーム用)
32 ギア列
35 カバーガラス
36 撮像面
40 制御部
41 フレキシブル回路
42 フレキシブル基板
43 マイクロコンピュータ
43a メモリ
44 モータドライバ回路
44a スイッチング回路
47 入出力端子
48 ランド(モータ端子接続用)
49 ランド(直流モータ端子接続用)
50 ランド(フレキシブル基板固定用)
60 外部の制御装置
Claims (13)
- レンズ本体と、前記レンズ本体に内蔵されたフォーカスレンズ群をモータによって光軸に沿って移動させるフォーカス調整部と、前記レンズ本体に内蔵されたズームレンズ群をモータによって光軸に沿って移動させるズーム調整部と、前記レンズ本体内部に内蔵された絞りをモータによって可変して、前記レンズ本体内部の光量を増減するアイリス調整部と、前記各モータを制御する制御部とからなり、
前記制御部の回路は、フレキシブル回路で構成されていることを特徴とするCCTVレンズ。 - 前記制御部の前記フレキシブル回路は、回路上にマイクロコンピュータを設けていることを特徴とする請求項1に記載のCCTVレンズ。
- 前記マイクロコンピュータは、外部の制御装置とシリアル通信ラインで接続され、前記外部の制御装置からのコマンドに基づいて、前記各モータを制御することを特徴とする請求項2に記載のCCTVレンズ。
- 前記マイクロコンピュータは、前記レンズ本体の識別番号を記憶し、前記シリアル通信ラインによる前記外部の制御装置から送信された前記識別番号が一致するかをチェックし、前記識別番号が一致したときに、前記外部の制御装置からの前記コマンドを受け付けるようにしたことを特徴とする請求項3に記載のCCTVレンズ。
- 前記マイクロコンピュータは、前記フォーカス調整部及び前記ズーム調整部の各レンズの位置データとしての各モータの基準位置からのステップ数の記憶及び読み出しが可能に構成されていることを特徴とする請求項3に記載のCCTVレンズ。
- 前記マイクロコンピュータは、前記各モータの動作履歴を記憶し、前記シリアル通信ラインにより前記各モータの動作履歴を外部の制御装置に出力するようにしたことを特徴とする請求項5に記載のCCTVレンズ。
- 前記マイクロコンピュータは、外部の制御装置からのズーム切り替え指令に基づいて、ズームレンズ群及びフォーカスレンズ群を所定の位置に移動させるように制御するようにしたことを特徴とする請求項5に記載のCCTVレンズ。
- 前記マイクロコンピュータは、外部から電源が供給され、電源入力時に前記ズームレンズ群及び前記フォーカスレンズ群を予め設定されている位置に移動するように、前記モータを制御することを特徴とする請求項5に記載のCCTVレンズ。
- 前記モータは、パルスモータであり、前記フレキシブル回路から直接前記パルスモータの入力端子に駆動電圧を印加するように構成したことを特徴とする請求項1に記載のCCTVレンズ。
- 前記レンズ本体は、変倍光学系であるバリフォーカルレンズであることを特徴とする請求項1に記載のCCTVレンズ。
- CCTVカメラのレンズとして設けられたCCTVレンズの補正方法であって、
前記CCTVレンズは、レンズ本体と、前記レンズ本体に内蔵されたフォーカスレンズ群をパルスモータによって光軸に沿って移動させるフォーカス調整部と、前記レンズ本体に内蔵されたズームレンズ群をパルスモータによって光軸に沿って移動させるズーム調整部と、前記パルスモータを制御する制御部とを有し、
前記制御部は、前記ズームレンズ群の位置データとしての前記ズーム調整部のパルスモータの基準位置からのステップ数毎に、像高に対するレンズの周辺明るさの補正用の関係を示す多項式の係数のデータを記憶し、
前記CCTVカメラの画像データを取得するステップと、
前記CCTVカメラの画像データに対応し、前記ズーム調整部のパルスモータの基準位置からのステップ数に応じた像高に対するレンズの周辺明るさの関係を示す多項式の係数のデータを前記制御部から取得するステップと、
取得した多項式の係数のデータに基づいて、前記CCTVカメラの画像データの明るさを補正処理するステップと、を有すること
を特徴とするCCTVレンズの補正方法。 - CCTVカメラのレンズとして設けられたCCTVレンズの補正方法であって、
前記CCTVレンズは、レンズ本体と、前記レンズ本体に内蔵されたフォーカスレンズ群をパルスモータによって光軸に沿って移動させるフォーカス調整部と、前記レンズ本体に内蔵されたズームレンズ群をパルスモータによって光軸に沿って移動させるズーム調整部と、前記各パルスモータを制御する制御部とを有し、
前記制御部は、前記ズームレンズ群の位置データとしての前記ズーム調整部のパルスモータの基準位置からのステップ数毎に、像高に対するレンズの歪曲収差の関係を示す多項式の係数のデータを記憶し、
前記CCTVカメラの画像データを取得するステップと、
前記CCTVカメラの画像データに対応し、前記ズーム調整部のパルスモータの基準位置からのステップ数に応じた像高に対するレンズの歪曲収差の関係を示す多項式の係数のデータを前記制御部から取得するステップと、
取得した多項式の係数のデータに基づいて、前記CCTVカメラの画像データの歪曲収差を補正処理するステップと、を有すること
を特徴とするCCTVレンズの補正方法。 - CCTVカメラのレンズとして設けられたCCTVレンズの補正方法であって、
前記CCTVレンズは、レンズ本体と、前記レンズ本体に内蔵されたフォーカスレンズ群をパルスモータによって光軸に沿って移動させるフォーカス調整部と、前記レンズ本体に内蔵されたズームレンズ群をパルスモータによって光軸に沿って移動させるズーム調整部と、前記レンズ本体内部の絞りをパルスモータによってレンズのFナンバー(Fno)を調整して前記レンズ本体内部の光量を増減するアイリス調整部と、前記各パルスモータを制御する制御部とを有し、
前記制御部は、ズームレンズ群の位置データとしての前記ズーム調整部のパルスモータの基準位置からのステップ数に応じたレンズのFナンバー(Fno)に対するレンズの解像度のデータ及びアイリス調整部のパルスモータの基準位置からのステップ数に対応したFnoのデータを記憶し、
前記ズーム調整部のパルスモータの基準位置からのステップ数に対する最大解像度のFナンバー(Fno)のデータを選択するステップと、
選択した最大解像度のFナンバーから前記絞り位置のデータを読み出すステップと、
前記アイリス調整部のパルスモータを駆動して絞りを最適絞り位置に設定するステップと、を有すること
を特徴とするCCTVレンズの補正方法。
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018179318A1 (ja) * | 2017-03-31 | 2018-10-04 | Cbc株式会社 | プログラムおよびレンズ制御装置 |
WO2018198340A1 (ja) * | 2017-04-28 | 2018-11-01 | 株式会社Pfu | ピント調整ユニットおよび画像読取装置 |
JP2020042158A (ja) * | 2018-09-11 | 2020-03-19 | キヤノン株式会社 | レンズ装置、撮像装置、処理装置、およびカメラ装置 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD756440S1 (en) | 2012-10-16 | 2016-05-17 | Canon Denshi Kabushiki Kaisha | Interchangeable lens for camera |
JP2017098631A (ja) * | 2015-11-18 | 2017-06-01 | オリンパス株式会社 | 画像合成処理装置 |
JP6625413B2 (ja) * | 2015-11-27 | 2019-12-25 | オリンパス株式会社 | 像振れ補正装置及びこの像振れ補正装置を適用した撮像装置 |
WO2018179319A1 (ja) * | 2017-03-31 | 2018-10-04 | Cbc株式会社 | カメラ装置およびレンズ装置 |
JP7011558B2 (ja) * | 2018-09-11 | 2022-01-26 | キヤノン株式会社 | ズームレンズ装置、撮像装置、処理装置、およびカメラ装置 |
WO2020054684A1 (en) | 2018-09-11 | 2020-03-19 | Canon Kabushiki Kaisha | Lens apparatus, image pickup apparatus, processing apparatus, and camera apparatus |
JP7242318B2 (ja) * | 2019-01-31 | 2023-03-20 | キヤノン株式会社 | レンズ装置および撮像装置 |
JP7267723B2 (ja) * | 2018-12-14 | 2023-05-02 | キヤノン株式会社 | レンズ装置、撮像装置、処理装置、およびカメラ装置 |
JP7059171B2 (ja) * | 2018-12-14 | 2022-04-25 | キヤノン株式会社 | レンズ装置、撮像装置、処理装置、およびカメラ装置 |
EP4071549A4 (en) * | 2019-12-02 | 2022-11-30 | CBC Co., Ltd. | LENS DEVICE |
US20230292001A1 (en) | 2020-09-24 | 2023-09-14 | Cbc Co., Ltd. | Lens device, lens device embedded system, lens device embedded inspection device, and operation program |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09298683A (ja) * | 1996-04-26 | 1997-11-18 | Sony Corp | 映像信号処理方法及び映像信号処理装置 |
JP2000075190A (ja) * | 1998-08-31 | 2000-03-14 | Canon Inc | レンズ鏡筒およびこれを備えた光学機器 |
JP2000165711A (ja) * | 1998-11-30 | 2000-06-16 | Sony Corp | ドーム型ビデオカメラ装置 |
JP2004252139A (ja) * | 2003-02-20 | 2004-09-09 | Nikon Corp | 交換レンズ |
JP2006270919A (ja) * | 2005-02-25 | 2006-10-05 | Ricoh Co Ltd | 画像補正方法、撮影装置、画像補正装置およびプログラム並びに記録媒体 |
JP2010054629A (ja) * | 2008-08-26 | 2010-03-11 | Sigma Corp | カメラシステム及びカメラシステムを構成する交換レンズ及び中間アクセサリ |
JP2010226157A (ja) * | 2009-03-19 | 2010-10-07 | Nikon Corp | カメラおよび画像補正方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4990948A (en) * | 1986-12-27 | 1991-02-05 | Canon Kabushiki Kaisha | Flexible printed circuit board |
US5508781A (en) * | 1993-03-15 | 1996-04-16 | Olympus Optical Co., Ltd. | Printed circuit board |
JPH06273653A (ja) * | 1993-03-24 | 1994-09-30 | Olympus Optical Co Ltd | フレキシブルプリント基板 |
JPH07151948A (ja) * | 1993-11-30 | 1995-06-16 | Canon Inc | レンズ鏡筒 |
US5559571A (en) * | 1994-01-20 | 1996-09-24 | Nikon Corporation | Lens barrel and electric circuit board connection structure |
JPH07283563A (ja) * | 1994-04-13 | 1995-10-27 | Olympus Optical Co Ltd | フレキシブルプリント基板 |
JP3404117B2 (ja) * | 1994-04-25 | 2003-05-06 | オリンパス光学工業株式会社 | レンズ鏡筒 |
JPH07294790A (ja) * | 1994-04-25 | 1995-11-10 | Olympus Optical Co Ltd | フレキシブルプリント基板 |
JPH07294792A (ja) * | 1994-04-26 | 1995-11-10 | Olympus Optical Co Ltd | フレキシブルプリント基板の保持構造 |
JP2001021785A (ja) | 1999-07-09 | 2001-01-26 | Seiko:Kk | モータライズドバリフォーカル交換レンズ及び該交換レンズを備えたシステム |
JP2005202261A (ja) * | 2004-01-19 | 2005-07-28 | Canon Inc | レンズ鏡筒 |
JP4878457B2 (ja) * | 2005-08-25 | 2012-02-15 | 日本精密測器株式会社 | 絞り装置 |
JP4510783B2 (ja) * | 2006-05-23 | 2010-07-28 | キヤノン株式会社 | 光学機器 |
JP4857035B2 (ja) * | 2006-06-23 | 2012-01-18 | キヤノン株式会社 | 光学機器 |
JP2008083557A (ja) * | 2006-09-28 | 2008-04-10 | Fujinon Corp | レンズ鏡胴 |
JP4845723B2 (ja) * | 2006-12-27 | 2011-12-28 | 富士フイルム株式会社 | レンズ駆動システム |
JP5173979B2 (ja) * | 2009-10-20 | 2013-04-03 | キヤノン株式会社 | 絞り装置およびそれを有するレンズ鏡筒並びに撮像装置 |
-
2013
- 2013-01-24 WO PCT/JP2013/051382 patent/WO2014115274A1/ja active Application Filing
- 2013-01-24 JP JP2014538002A patent/JP5893746B2/ja active Active
- 2013-01-24 US US14/413,464 patent/US9544477B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09298683A (ja) * | 1996-04-26 | 1997-11-18 | Sony Corp | 映像信号処理方法及び映像信号処理装置 |
JP2000075190A (ja) * | 1998-08-31 | 2000-03-14 | Canon Inc | レンズ鏡筒およびこれを備えた光学機器 |
JP2000165711A (ja) * | 1998-11-30 | 2000-06-16 | Sony Corp | ドーム型ビデオカメラ装置 |
JP2004252139A (ja) * | 2003-02-20 | 2004-09-09 | Nikon Corp | 交換レンズ |
JP2006270919A (ja) * | 2005-02-25 | 2006-10-05 | Ricoh Co Ltd | 画像補正方法、撮影装置、画像補正装置およびプログラム並びに記録媒体 |
JP2010054629A (ja) * | 2008-08-26 | 2010-03-11 | Sigma Corp | カメラシステム及びカメラシステムを構成する交換レンズ及び中間アクセサリ |
JP2010226157A (ja) * | 2009-03-19 | 2010-10-07 | Nikon Corp | カメラおよび画像補正方法 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018179318A1 (ja) * | 2017-03-31 | 2018-10-04 | Cbc株式会社 | プログラムおよびレンズ制御装置 |
WO2018198340A1 (ja) * | 2017-04-28 | 2018-11-01 | 株式会社Pfu | ピント調整ユニットおよび画像読取装置 |
JP2020042158A (ja) * | 2018-09-11 | 2020-03-19 | キヤノン株式会社 | レンズ装置、撮像装置、処理装置、およびカメラ装置 |
US11187870B2 (en) | 2018-09-11 | 2021-11-30 | Canon Kabushiki Kaisha | Lens apparatus, image pickup apparatus, processing apparatus, and camera apparatus |
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US20150181128A1 (en) | 2015-06-25 |
JPWO2014115274A1 (ja) | 2017-01-19 |
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