JP3276794B2 - Conversion adapter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens conversion adapter for optical equipment.

[0002]

2. Description of the Related Art In a manufacturing site, automation is advanced, and accordingly, many image processing devices are used in each manufacturing process such as assembly and quality evaluation. The optical system of these image processing devices is C
Mount lenses are often used. On the other hand, with the advancement of technology in recent years, higher-resolution sensors and the like have been developed, and when they are used in manufacturing sites and the like, camera lenses such as 35 mm plates having a larger imaging area than C-mount lenses are often used. It has become.

However, since a camera lens such as a 35 mm version has a mount different from the C mount, an adapter for changing the mount is required.

[0004]

However, in recent years,
Camera systems such as the 5 mm version are often digitized, such as autofocus, and systems other than the original camera system often cannot sufficiently exhibit their functions.
For example, when the control of the focus / aperture of the lens is not performed by an external mechanical link such as a camera or the like, but is performed only by an electric signal, a manual operation cannot be performed.

[0005] In order to solve such a problem, the present invention provides:
An object of the present invention is to provide a conversion adapter that can be controlled by another system even in a lens controlled only by such an electric signal.

[0006]

According to a first aspect of the present invention, there is provided an actuator and a controller for controlling an operation of the actuator .
A first mount to which an interchangeable lens provided with an microcomputer can be mounted, a second mount to which an optical device having an interchangeable lens attached to the first mount as a photographic optical system can be mounted, and the first mount It is provided to, while performing a first electrical terminal disposed in order to perform communication with the microcomputer, the microcomputer and the communication of the connected interchangeable lens to the first electrical terminal of the interchangeable lens
And Micro computer, from said first and second mount a general-purpose electrical terminal for a different set computer, before
Connected to an external computer outside the optical device,
A microcomputer provided to communicate with the microcomputer connected to the electrical terminal of the external computer and the external computer.
Wherein the external computer controls the microcomputer of the interchangeable lens via a microcomputer connected to the first electric terminal. This allows
Therefore the optical instrument outside of the external computer, exchange Len
Can be controlled .

A second invention of the present application is the adapter
-The computer in the
Low-speed mode for drive control and high-speed mode for high-speed drive control
2. The conversion according to claim 1, further comprising:
Adapter.

[0008] The third invention of the present application is the above-mentioned low-speed mode.
Repeated replacement lens so that it is driven by the drive amount according to the speed
And in the high-speed mode, drive according to the target stop position.
And transmitted to the interchangeable lens to be driven by
The conversion adapter according to claim 2.

[0009] A fourth invention of the present application is the above-mentioned adapter,
The computer drives the interchangeable lens in a predetermined routine.
Movement to detect the characteristics of the interchangeable lens.
The conversion adapter according to claim 1, wherein

According to a fifth aspect of the present invention, the adapter is provided
Power supply for supplying power to the interchangeable lens actuator
A control circuit, wherein the power control circuit is provided in the adapter.
Claims characterized by being controlled by a computer
2. The conversion adapter according to 1.

[0011]

The interchangeable lens is not particularly limited to a single-lens reflex interchangeable lens, but may be, for example, an interchangeable lens for a video or a lens shutter.

[0013]

FIG. 1 shows a system using a conversion adapter for explaining an embodiment according to the present invention. In FIG. 1, reference numeral 1 denotes a conversion adapter, 2 denotes, for example, an interchangeable lens for a single-lens reflex camera (hereinafter abbreviated as a lens), 3 denotes a video camera or a scanner camera having a lens 2 as a photographing optical system,
Alternatively, an optical device (hereinafter abbreviated as a camera) such as a film camera 4 is a general-purpose computer for controlling the lens 2. Reference numeral 5 denotes a mount for mounting the lens 2, and 6 denotes an electric contact mounted on the mount 5. Reference numeral 7 denotes a general-purpose electric terminal for computer communication for performing serial communication with the computer 4, which uses an RS232C interface in the present embodiment, but may use a Centronics, SCSI, or the like. A conversion circuit 8 converts a serial control signal from the computer 4 into a control signal that can be received by the lens 2 and converts a signal from the lens 2 into a serial signal that can be received by the computer 4. With the system described above, the microcomputer 2a in the single-lens reflex interchangeable lens 2 can be controlled by the computer 4 via the interface 2b and the conversion adapter 1. The microcomputer 2a in the lens controls the actuator 2C in the lens via the control circuit 2d to drive, for example, the focus lens diaphragm 2e.

FIG. 2 is a circuit diagram for explaining the adapter 1 in FIG. 1 in more detail. 6-a is lens 2
A power supply terminal (hereinafter abbreviated as VBAT power supply) for driving the lens actuator therein, 6-b is a power supply terminal 6-a
A power terminal (hereinafter referred to as a VDD power source) for operating a circuit system in the lens 2;
Is a ground contact for the power contact 6-c. 6-e is a clock terminal for serial communication between the microcomputer 2a in the lens 2 and the conversion adapter 1, 6-f is a contact for receiving serial data from the microcomputer 2a in the lens 2 to the conversion adapter 1, and 6-g is a conversion terminal. A contact for transmitting serial data from the adapter 1 to the microcomputer 2a in the lens 2. Reference numeral 9 denotes a microcomputer, and reference numeral 10 denotes a level conversion circuit for converting an RS232C serial signal connected from an external computer into a logic level of +5 volts and 0 volts.

A power supply control circuit 11 controls the supply of power for driving the actuator 2C in the lens 2.
The power supply control circuit 11 turns on or off power supply to the power supply terminal 6-a according to a control signal from the microcomputer 9. Reference numeral 12 denotes a power supply control circuit for controlling the supply of power for operating the control circuit 2d in the lens 2. The power supply control circuit 12 turns on or off power supply to the power supply terminal 6-c according to a control signal from the microcomputer 9. I do. PS is a power switch (main switch).

Reference numeral 13 denotes an interchangeable lens mounting detection switch, which is turned on only when the lens 2 is mounted on the mount 5 and the lens 2 can be controlled by the adapter 1 through the electric signal contact 6. The switch 13 is connected to the microcomputer 9. It is connected. Reference numeral 14 denotes a nonvolatile memory which is connected to the microcomputer 9 so that the microcomputer 9 can erase, write, and read data in the memory 14. Reference numeral 15 denotes a mode switch, which is a switch 15-a,
The transfer rate of the RS232C interface is set as shown in FIG. 3 according to the state of 15-b.

FIGS. 4 to 9 are flowcharts for explaining the operation of the microcomputer 9 in the adapter. Hereinafter, each step of the flowcharts of FIGS.

<Step 101> When the main switch PS shown in FIG. 2 is turned on, the microcomputer 9 initializes memories, input / output ports, and the like. At this time, switch 1
The transfer speed of the RS232C serial communication is also set according to the state of No. 5.

<Step 102> The contents of the nonvolatile memory 14 are read out and stored in the memory in the microcomputer 9. Note that the nonvolatile memory 14 stores data having the contents shown in FIG. F_MEM in FIG.
O0 to F_MEMO7 are stored data of the focus position and are set by values from a focus encoder (not shown) in the lens 2. F_SPD <b> 0 to F_SDP <b> 3 are focus speed data and are set by a focus drive amount in the lens 2. I_SPD0 to I_SDP3 are set at time intervals for executing driving of the aperture (IRIS) in the lens 2 based on the IRIS speed data. Note that F_MEMO0
To F_MEMO7 are stored in the memories MF_MEMO0 to MF_MEMO7 of the microcomputer 2 respectively.
PD0 to F_SPD3 are stored in the memories MF_SPD0 to MF_SPD3 of the microcomputer 2, respectively.
_SPD0 to I_SPD3 are stored in the memories MI_SPD0 to MI_SPD3 of the microcomputer 2, respectively.

<Step 103> The state of the switch 13 is detected. If the switch 13 is turned on, the process proceeds to step 105 because the lens 2 is mounted. If it is off, the process proceeds to step 104.

<Step 104> In step 103,
Since it is determined that the lens 2 is not attached to the adapter 1, the power supply control circuit 12 is connected to the power supply terminal 6-
c so as not to be supplied, and the process returns to step 103.

<Step 105> In step 103,
Since it is determined that the lens 2 is mounted on the adapter 1, the power supply circuit 12 is connected to the power supply terminal 6-c.
And the process proceeds to step 106. That is, in steps 103 to 105, VDD power is not supplied until the lens 2 is mounted, and VDD is supplied when the lens 2 is mounted.

<Step 106> Since the circuit power supply VDD is supplied to the lens 2 in step 105, the electric contacts 6-
e, 6-f, 6-g, microcomputer 2a in lens 2
And two-way serial communication. If this serial communication is not executed normally, the process proceeds to step 107. If the serial communication is executed normally, step 10 is executed.
Proceed to 8.

<Step 107> Since communication with the microcomputer 2a in the lens 2 is abnormal, the power supply control circuit 11
Control is performed so that BAT is not supplied to the power supply terminal 6-a, and the process returns to step 103.

<Step 108> Since the communication with the microcomputer 2a in the lens 2 has been normally performed, the power supply control circuit 11
Is controlled so that the power supply VBAT is supplied to the power supply terminal 6-a, and the process proceeds to step 109. According to steps 106 to 108, the power supply VBAT is supplied only when communication with the microcomputer 2a in the lens 2 is normally performed.

<Step 109> The lens 2 is controlled through the electric contact 6 so that the aperture of the mounted lens 2 is driven open.

<Step 110> Information on the open F-number and the minimum aperture F-number of the attached lens 2 is fetched through the electric contact 6 and stored in the memories AV_O and A_V, respectively.
Store in V_MAX.

<Step 111> The lens 2 is controlled through the electric contact 6 so that the focus of the mounted lens 2 is driven to the closest end.

<Step 112> The lens 2 is controlled through the electric contact 6 so as to reset a value (not shown) of the focus encoder of the mounted lens 2 to zero.

<Step 113> The lens 2 is controlled through the electric contact 6 so that the focus of the mounted lens 2 is driven to the infinite end.

<Step 114> The focus encoder value of the mounted lens 2 is fetched through the electric contact 6 and stored in the memory ENC_MAX.

The above steps 109 to 114 drive the aperture and focus of the mounted lens 2 to the initial position, and also open lens F number,
The minimum aperture F number and the focus encoder value at the infinite end when the closest end is set to zero are obtained and stored in the memory,
Thus, the characteristics of the interchangeable lens are read.

<Step 115> The communication by the RS232C is permitted, and when the communication is received, the generation of the interrupt is permitted.

From step 120 in FIG. 5A, the interruption process due to the reception of the RS232C communication is described.

<Step 120> The received command is analyzed, and the process proceeds to each command reception processing routine. FIG.
Steps (130) to (135) of (b) are for explaining processing when a command for driving the focus in the closest direction is received.

In FIG. 5B, <Step 130>
The data of the currently set focus speed number is copied from the memories MF_SPD0 to MF_SPD3 to the memory P.

<Step 131> If the close focus direction driving flag is set, the communication interrupt routine is terminated without any operation because the drive is already performed in the close direction.

<Step 132> The focus encoder value immediately before driving the focus is obtained through the electric contact 6 and stored in the memory ENC_0.

<Step 133> The lens 2 is controlled through the electric contact 6 so that the focus of the mounted lens 2 is driven in the close direction by the driving amount P.

<Step 134> Set the close-in-focus direction driving flag.

<Step 135> The in-focus in-direction driving flag is cleared, and the communication interrupt routine ends.

Step 140 to step 1 in FIG.
Reference numeral 45 denotes a process when a command for driving the focus in the infinite direction is received.

<Step 140> Memory MF_SPD0
To MF_SPD3, the data of the currently set focus speed number is copied to the memory P.

<Step 141> If the in-focus in-direction driving flag is set, the communication interrupt routine is terminated without doing anything because the driving is already in the infinite direction.

<Step 142> The focus encoder value immediately before driving the focus is obtained through the electric contact 6 and stored in the memory ENC_0.

<Step 143> The lens 2 is controlled through the electric contact 6 so that the focus of the mounted lens 2 is driven in the infinite direction by the driving amount P.

<Step 144> The in-focus in-focus driving flag is set.

<Step 145> The flag in the near-focus direction is cleared, and the communication interrupt routine is terminated.

Step 150 to Step 1 in FIG.
Reference numeral 52 denotes a process when a command to stop focusing is received.

<Step 150> The lens 2 is controlled through the electric contact 6 so that the focus of the mounted lens 2 is stopped.

<Step 151> The in-focus in-focus direction driving flag is cleared.

<Step 152> The flag in the near-focus driving direction is cleared, and the communication interrupt routine ends.

Step 155 in FIG. 5E explains the processing when a command for setting the focus speed is received.

<Step 155> Memory MF_SPD0 to MF_SPD3 according to the received focus speed number
Is copied to the memory P, and the communication interrupt routine is terminated.

Steps 156 to 157 explain the processing when a command for storing the focus position is received.

<Step 156> of FIG. 6A. A focus encoder value is obtained from the lens 2 through the electric contact 6 and stored in the memory MF_MEMO0 according to the received storage number.
To MF_MEMO7.

<Step 157> A focus encoder value is obtained from the lens 2 through the electric contact 6, and the nonvolatile memories F_MEMO0 to F_MEM_F_MEM_0 according to the received storage number are obtained.
Write to MEMO7 and end the communication interrupt routine.

Steps 160 to 165 in FIG. 8B are for explaining the processing when a command for driving to the stored focus position is received. <Step 160> Memory MF_MEMO0-MF_M according to received storage number
The data of EMO7 is stored in the memory ENC_2. That is, the data stored in ENC_2 indicates the target encoder value of the focus to be driven from now on. <Step 161> A focus encoder value is obtained from the lens 2 through the electric contact 6 and stored in the memory ENC_0.

<Step 162> Memory ENC_0 and E
The amount to be driven is calculated from NC_2 and stored in the memory P '. The operation expression is represented by P '= ENC_2-ENC_0.

<Step 163> The lens 2 is controlled through the electric contact 6 so that the focus of the mounted lens 2 is driven by the driving amount P '.

<Step 164> The in-focus in-focus direction driving flag is cleared.

<Step 165> The flag in the near-focus direction is cleared, and the communication interrupt routine is terminated.

Step 170 to step 1 in FIG.
Reference numeral 77 denotes a process when a command for driving the aperture in the opening direction is received.

<Step 170> Whether or not the aperture is currently open is obtained from the lens 2 through the electric contact 6, and if the aperture is open, no further drive in the opening direction is possible, so the communication interrupt routine is terminated as it is. . If it is not in the open state, the process proceeds to step 171.

<Step 171> Memory MI_SPD0
The data of the currently set aperture speed number from .about.MI_SPD3 is copied to the memory T.

<Step 172> If the aperture opening direction driving flag is set, the communication interrupt routine is terminated without any operation since the aperture opening direction is already being driven.

<Step 173> The aperture of the attached lens 2 is driven in the opening direction by 1/8 stop.
The lens 2 is controlled through the electric contact 6.

<Step 174> A timer is started so that an interrupt occurs at time T.

<Step 175> The timer interrupt occurrence flag is cleared.

<Step 176> An aperture opening direction driving flag is set.

<Step 177> The flag for driving in the narrowing-down direction is cleared, and the communication interrupt routine ends.

Step 180 to Step 1 in FIG.
Reference numeral 87 denotes a process when a command for driving the aperture in the aperture-down direction is received.

<Step 180> Whether or not the aperture is currently in the minimum aperture state is obtained from the lens 2 through the electric contact 6. If the aperture is in the minimum aperture state, it is not possible to drive in the aperture direction any further, so the communication interrupt routine is executed as it is. finish. If it is not in the minimum aperture state, the process proceeds to step 181.

<Step 181> Memory MI_SPD0
The data of the currently set aperture speed number from .about.MI_SPD3 is copied to the memory T.

<Step 182> If the drive-in-focus direction flag is set, the communication interrupt routine is terminated without any operation because the drive is already being performed in the stop-down direction.

<Step 183> The lens 2 is controlled through the electric contact 6 so that the aperture of the mounted lens 2 is driven in the direction of narrowing down by ８ step.

<Step 184> A timer is started to generate an interrupt at time T.

<Step 185> The timer interrupt occurrence flag is cleared.

<Step 186> The flag in the narrowing-down direction is set.

<Step 187> The flag in the aperture opening direction driving state is cleared, and the communication interrupt routine ends.

Step 190 to Step 1 in FIG.
Reference numeral 93 denotes a process when a command to stop the aperture drive is received.

<Step 190> The lens 2 is controlled through the electric contact 6 so as to stop the aperture driving of the mounted lens 2.

<Step 191> The timer interrupt occurrence flag is cleared.

<Step 192> The flag in the aperture opening direction driving state is cleared.

<Step 193> The driving flag in the focusing direction is cleared, and the communication interrupt routine ends.

<Step 195> in FIG. 7D describes the processing when a command for setting the aperture drive speed is received.

<Step 195> The speed data is copied from the memories MI_SPD0 to MI_SPD3 to the memory T in accordance with the received aperture drive speed number, and the communication interrupt routine ends.

Returning to FIG. 4 again, since communication by RS232C is permitted after step 115, it is necessary to receive each command and cause each lens 2 to perform various operations according to the command. In steps 200 to 207, it is determined whether it is necessary to perform focus or aperture driving, and the respective processes are performed.

<Step 200> If the close-in-progress flag is set, in step 201, processing for close-in drive is performed.

<Step 202> If the infinity driving flag is set, a process for infinite driving is performed in step 203.

<Step 204> If the open drive flag is set, a process for driving the aperture to open at step 205 is performed.

<Step 206> If the stop-in-driving flag is set, in step 207, processing for the stop-down driving is performed.

Steps 210 to 2 in FIG.
Reference numeral 16 denotes a close drive processing subroutine in step 201 of FIG.

<Step 210> The focus encoder value is obtained from the lens 2 through the electric contact 6 and is stored in the memory E
Store it in NC_1.

<Step 211> The previously obtained focus encoder value ENC_0 is compared with the currently obtained focus encoder value ENC_1. If the focus encoder value ENC_1 has not changed, the flow proceeds to step 214. If it has changed, step 21
Proceed to 2.

<Step 212> The content of the current focus encoder value ENC_1 is copied to EMC_0,
Update NC_0.

<Step 213> The lens 2 is controlled through the electric contact 6 so that the focus of the mounted lens 2 is driven in the closest direction by the driving amount P.

<Step 214> Whether or not the focus has reached the closest end is obtained from the lens 2 through the electric contact 6, and if the focus has not reached the closest end, the close drive processing subroutine ends as it is. If it has reached the closest end, the process proceeds to step 215.

<Step 215> The lens 2 is controlled through the electrical contact 6 so that the focus of the mounted lens 2 is stopped.

<Step 216> The close-in-focus direction driving flag is cleared, and the close-in drive processing subroutine is terminated.

Step 220 to Step 2 in FIG.
26 represents the infinite drive processing subroutine of step 203 in FIG.

<Step 220> The focus encoder value is obtained from the lens 2 through the electric contact 6 and is stored in the memory E
Store it in NC_1.

<Step 221> The focus encoder value ENC_0 acquired last time is compared with the focus encoder value ENC_1 acquired this time, and if it has not changed, the flow proceeds to step 224. If it has changed, step 21
Proceed to 2.

<Step 222> The content of the current focus encoder value ENC_1 is copied to EMC_0,
Update NC_0.

<Step 223> The lens 2 is controlled through the electric contact 6 so that the focus of the mounted lens 2 is driven in the infinite direction by the driving amount P.

<Step 224> Whether or not the focus has reached the infinity end is obtained from the lens 2 through the electric contact 6, and if the focus has not reached the infinity end, the infinity drive processing subroutine is terminated as it is. If the end has been reached, the process proceeds to step 225.

<Step 225> The lens 2 is controlled through the electric contact 6 so that the focus of the mounted lens 2 is stopped.

<Step 226> The in-focus in-direction driving flag is cleared, and the infinite driving processing subroutine is terminated.

Step 230 to step 2 in FIG.
Reference numeral 37 denotes an aperture opening drive processing subroutine in step 205.

<Step 230> If the timer interrupt occurrence flag has not been set, the time T has not elapsed since the previous driving of the aperture, and the aperture opening driving subroutine is terminated as it is. If the timer interrupt occurrence flag is set, the process proceeds to step 231.

<Step 231> Whether or not the aperture of the mounted lens 2 is open is acquired through the electric contact 6, and if it is in the open state, there is no need to drive the aperture further.

<Step 232> Set the aperture of the lens 2 to 1 /
The lens 2 is controlled through the electric contacts 6 so as to be driven in the opening direction by eight steps.

<Step 233> The timer is started so that an interrupt occurs at time T.

<Step 234> The timer interrupt occurrence flag is cleared, and the aperture opening drive subroutine ends.

<Step 235> The lens 2 is controlled through the electric contact 6 so as to stop driving the aperture of the mounted lens 2.

<Step 236> The flag in the aperture opening direction driving state is cleared.

<Step 237> The timer interrupt occurrence flag is cleared, and the aperture opening drive subroutine ends.

Step 240 to Step 2 in FIG.
Reference numeral 47 denotes a narrowing-down drive processing subroutine in step 207.

<Step 240> If the timer interrupt occurrence flag has not been set, the time T has not elapsed since the last drive of the aperture, and the aperture opening drive subroutine is terminated as it is. If the timer interrupt occurrence flag is set, the process proceeds to step 241.

<Step 241> It is determined whether or not the aperture of the mounted lens 2 is in the minimum aperture state by the electric contact 6.
If it is in the minimum aperture state, it is impossible to further reduce the aperture, and the process proceeds to step 245.

<Step 242> The aperture of the lens 2 is set to 1 /
The electric contacts 6 are driven so that only eight stages are driven in the narrowing direction.
Lens 2 is controlled through

<Step 243> The timer is started so that an interrupt occurs at time T.

<Step 244> The timer interrupt occurrence flag is cleared, and the focusing drive subroutine is terminated.

<Step 245> The lens 2 is controlled through the electric contact 6 so as to stop driving the aperture of the mounted lens 2.

<Step 246> The flag for driving in the narrowing-down direction is cleared.

<Step 247> The timer interrupt occurrence flag is cleared, and the focusing drive subroutine is terminated.

The step 250 in FIG. 9C is a timer interrupt routine when a timer interrupt occurs.

<Step 250> Since a timer interrupt occurs at time T, a timer interrupt occurrence flag is set, and the interrupt routine ends.

In general, as a motor control method, a speed servo for following a target speed is well known. In this speed servo system, as the vehicle approaches a stop target position, as shown in FIG. For this purpose, a method of gradually reducing the target speed is used. The lens 2 attached to this conversion adapter also controls the actuator for focusing.
Many are programmed to control with the characteristics as shown in FIG.

In this embodiment, the driving amount P to the target position is set so that the focus can be driven continuously at an arbitrary speed even for the lens 2 having such a focus driving characteristic.
The drive of the lens is controlled by the drive amount P in small increments at predetermined time intervals so as to maintain the speed V set in (1). Similarly, if the drive amount is P1, the speed is maintained at V1. In this embodiment, this method is used for manual focusing in which the stop position is not determined in advance. On the other hand, when driving to the focus position stored in advance, without driving control many times as described above,
Driving to the target position by the first one-time drive control enables the control in a shortest time.

In this embodiment, the control of the focus and the aperture of the lens 2 has been described. However, the control of the zoom or the control of the pan head may be performed. Also, RS232 is used as an interface between the computer 4 and the adapter 1.
Although described in C, other communication formats may be used. Also, as shown in FIG. 12, an input terminal VIDEO I for taking in a video signal from outside to the conversion adapter.
A level detection circuit LD for detecting N and the average level of the input video signal may be provided to add an auto IRIS function for controlling the aperture.

[0132]

By using the conversion adapter according to the present invention, even a lens controlled by communication of electric signals can be controlled from another general-purpose computer.
Furthermore, since programming is also possible, automation of lens control in a manufacturing factory or the like becomes easy.

[Brief description of the drawings]

FIG. 1 is a configuration diagram for explaining a system using a conversion adapter according to the present invention.

FIG. 2 is a circuit configuration diagram of a conversion adapter.

FIG. 3 is a diagram showing a relationship between a switch 15 and a baud rate of RS232C.

FIG. 4 is a flowchart for explaining the operation of the conversion adapter.

FIG. 5 is a flowchart for explaining the operation of the conversion adapter.

FIG. 6 is a flowchart for explaining the operation of the conversion adapter.

FIG. 7 is a flowchart for explaining the operation of the conversion adapter.

FIG. 8 is a flowchart for explaining the operation of the conversion adapter.

FIG. 9 is a flowchart for explaining the operation of the conversion adapter.

FIG. 10 is a diagram showing data stored in a nonvolatile memory.

FIG. 11 is a diagram illustrating a relationship between a focus drive speed of the interchangeable lens and a drive amount to a target position.

FIG. 12 is a circuit configuration diagram when an auto-IRIS function is added to the first embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conversion adapter 2 Interchangeable lens 3 Image processing equipment 4 Computer 6 Electric contact 7 Electric terminal 8 Conversion circuit 9 Microcomputer 10 Level conversion circuit 11, 12 Power control circuit 13 Switch 14 Nonvolatile memory 15 Switch

 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-54209 (JP, A) JP-A-4-273227 (JP, A) JP-A-4-273230 (JP, A) JP-A-4-273 273226 (JP, A) JP-A-7-92373 (JP, A) JP-A-8-6137 (JP, A)

Claims (5)

(57) [Claims] 1. An optical apparatus comprising: a first mount capable of mounting an interchangeable lens including an actuator and a microcomputer for controlling the operation of the actuator; and an optical apparatus having the interchangeable lens mounted on the first mount as a photographing optical system. a second mount can be attached, is provided in the first mount, Mai of the interchangeable lens
Black a first electrical terminal provided for causing the computer and communication, and the micro competent <br/> Yuta which is connected to the first electrical terminal communicates with microcomputer of the interchangeable lens, the first and Separate from the second mount
A general-purpose electrical terminal for a computer, the terminal being outside the optical device.
Is connected to an external computer, and a second electrical terminal provided in order to perform communication with said first electrical terminal connected to a microcomputer and the external computer, the first by an external computer A microcomputer for controlling the microcomputer of the interchangeable lens via a microcomputer connected to the electric terminal of the conversion adapter. 2. The conversion adapter according to claim 1, wherein the computer in the adapter has a low-speed mode for controlling the driving of the lens in the interchangeable lens at a low speed, and a high-speed mode for controlling the driving of the lens in the interchangeable lens at a high speed. . 3. In the low-speed mode, transmission to the interchangeable lens is performed repeatedly so as to be driven at a drive amount corresponding to the speed, and in the high-speed mode, transmission to the interchangeable lens is performed so as to be driven at a drive amount according to a target stop position. The conversion adapter according to claim 2, characterized in that: 4. The conversion adapter according to claim 1, wherein a computer in the adapter detects characteristics of the interchangeable lens by driving the interchangeable lens in a predetermined routine. 5. The adapter according to claim 1, wherein the adapter has a power control circuit for supplying power to the actuator of the interchangeable lens, and the power control circuit is controlled by a computer in the adapter. Conversion adapter.