JPH06201972A - Optical equipment - Google Patents

Abstract

PURPOSE:To miniaturize an optical equipment and to improve operability by performing focusing and/or variable power adjusting with an actuator by using one operating member. CONSTITUTION:A microcomputer 1 provided in a lens has an interruption function, a memory and a timer counter. A manual ring 2 for performing manual focusing and manual variable power adjusting, which is provided in a lens barrel, is operated to rotate at the time of performing focusing and operated to straight advance at the time of performing variable power adjusting. The output of a detecting means 4 detecting the rotating motion and the position of the straight advancing direction of the manual ring 2 is connected to the input port of the microcomputer 1. Therefore, either or both at the same time of the control of a motor for focusing by operating the rotation of the manual ring 2 and the control of a motor for adjusting variable power by operating the straight advancing of the ring 2 are performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical device for performing focus adjustment and zoom adjustment of an optical system.

[0002]

2. Description of the Related Art Conventionally, as a manual focus adjustment and variable power adjustment mechanism of a lens, a focus adjustment optical system and a variable power adjustment optical system are moved by mechanical coupling by operating one or two operating members. The method is typical. However, in the method of mechanical coupling, the arrangement of the operating member is easily restricted by the position of the optical system to be adjusted, and the degree of freedom in design is hindered. Further, with the recent computerization of automatic focus adjustment and automatic variable power adjustment using actuators, the actuator has come to be used for either focus adjustment or variable power adjustment in manual adjustment.

[0003]

However, in the prior art, either the focus adjustment or the variable power adjustment is adjusted by the actuator, and the other is mechanically adjusted.
An operating member is required for each. This is an obstacle to downsizing of the lens, and it is very difficult to perform focus adjustment and variable magnification adjustment at the same time.

According to the present invention, the focus adjustment and the variable magnification adjustment are performed by an actuator such as a motor with one operating member.
It solves these problems.

[0005]

In order to solve the above problems, the present invention provides an operating member, a detecting means for detecting the operating state of the operating member, a focus adjusting actuator, a variable power adjusting actuator, and both of these. Since the control means for controlling the drive of the actuator is provided and the focus adjustment and / or the magnification change adjustment by the actuator is performed by one operating member, the size reduction of the optical device provided with the operating member, such as a lens barrel, can be achieved. It is possible to provide an optical device that can be achieved and further improved in operability such that both can be adjusted at the same time.

Further, one operating member is provided by providing a drive control of the focus adjustment actuator and a control means for selectively controlling the drive inhibition depending on the automatic focus adjustment mode or the manual focus adjustment mode. Since an adjustment requiring a manual operation can be selectively performed, an optical device with improved operability can be provided.

[0007]

【Example】

(Embodiment 1) FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, reference numeral 1 is a microcomputer (hereinafter abbreviated as a microcomputer) provided in the lens, and the microcomputer 1 has an interrupt function, a memory, and a timer counter. Reference numeral 2 denotes a manual ring provided on the lens barrel for performing manual focus adjustment and manual variable magnification adjustment. A rotation operation is performed when focus adjustment is performed, and a straight advance operation is performed when variable magnification adjustment is performed. Numerals 3 and 4 are detection means for detecting the rotational movement of the manual ring 2 and the rectilinear direction position, respectively. The outputs of the detection means 3 and 4 are connected to the input port of the microcomputer 1. 12 is a focus adjustment optical system, 13 is a magnification adjustment optical system, and 5 and 6 are both microcomputers 1.
Is a motor driver circuit controlled by 7; 7 is a motor for moving the focus adjusting optical system 12; 8 is a motor for moving the variable magnification adjusting optical system 13;・ 6
Driven by. Reference numeral 9 is a drive amount detecting means for detecting the drive amount of the motor 7. Reference numeral 10 is an end detecting means for detecting that the focus adjusting optical system 12 has reached the closest end or infinite end, and 11 is a position detecting means for detecting the position of the magnification adjusting optical system 13.

FIG. 2 is a diagram showing the structure of the manual ring 2 and the detecting means 3 and 4 in FIG. 21 ・ 22
Is a fixed cylinder, and 23 is a donut-shaped conductive pattern for detecting the rotation of the manual ring 2. 24-a ・ 2
4-b and 24-c are brushes that slide on the conductive pattern 23, and 26 is a pressing plate that presses the manual ring 2.
It is fixed to the straight advancement cylinder 25. 27 is a roller that passes through a cam groove cut in the straight direction of the fixed cylinder 21, and the roller 27 is a screw 2
It is attached to the straight advancement cylinder 25 by 8. 29 is a potentiometer arranged in the straight direction of the fixed cylinder 21,
Reference numeral 30 denotes a brush attached to the straight-moving barrel 25, which slides on the potentiometer 29.

FIG. 3 shows the relationship between the conductive pattern 23 and the brush 24 and the signal processing circuit. Although the conductive pattern is actually a donut shape, it is shown linearly for the sake of explanation. In FIG. 3, 31 and 32 are pull-up resistors, 33 is a flip-flop in which the signal generated in the brush 24-a is input to the data input, and the signal generated in the brush 24-c is input to the clock input, and 34 is the brush 24. It is an exclusive OR gate with -a and 24-c as input. Further, pull-up resistors 31 and 32 are connected to the brushes 24-a and 24-c, respectively.
-B is connected to ground.

When the manual ring 2 makes a rotary motion,
With the rotation, the conductive pattern 23 also rotates. At this time, since the straight-moving barrel 25 is held by the cam cut in the straight-moving direction of the fixed barrel 21, it does not move in the rotating direction. Therefore, the conductive pattern 23 moves in the direction of the arrow or in FIG. 3 with respect to the straight-moving cylinder 25 and the brush 24 fixed to the straight-moving cylinder 25.
-C has a conductive pattern 23 and a pull apple resistor 31.3
2 produces a signal. The signals generated in the brushes 24-a and 24-b are PLS0 and PLS1, respectively. 4A and 4B respectively show brushes 24-a and 24-c when the conductive pattern is moved in the directions of the arrows shown in FIG.
3 is a diagram showing a temporal change in the signal of FIG. 4 and the output signal of the flip-flop 33 and the output signal of the exclusive OR 34. A high level is output to the flip-flop 33 when operating in the arrow direction, and a low level is output when operating in the arrow direction, that is, this signal represents the direction (hereinafter this signal is referred to as DIR). In this embodiment, it is assumed that the operation is performed in the arrow direction when the focus is adjusted to the infinite direction, and the arrow direction is performed when the focus is adjusted to the closest distance. A pulse signal corresponding to the rotational movement is output to the exclusive OR gate 34 (hereinafter this signal is referred to as PLS).

FIG. 5 shows a potentiometer 29 and a brush 3.
2 shows a relationship of 0 and a signal processing circuit. 35
Is a pull-up resistor, 36 is an A / D converter, and A / D
The input pull-up resistors 35 of the D converter 36 are both electrically connected to the brush 30. One end of the potentiometer 29 is connected to the ground, and the brush 30
Slides straight on the potentiometer, the resistance value between the brush 30 and the ground changes, and the power supply voltage Vcc increases.
The input voltage of the A / D converter 36 that divides the voltage also changes. This input voltage is V1. FIG. 6 shows a brush 30
And the voltage V1. Also,
The output of the A / D converter 36 is connected to the microcomputer 1 and the signal obtained by digitizing the voltage V1 is D1.

When the manual ring 2 makes a rectilinear movement, the rectilinear barrel 25 makes a rectilinear movement by the same amount as the manual ring 2, and the brush 30 slides on the potentiometer 29 in a rectilinear direction. At this time, as described above, the voltage V1 corresponding to the position of the brush 30 is input to the A / D converter 36, and a signal obtained by digitizing the voltage V1 is output.
This digitized signal is D1.

Up to now, the case where the manual ring 2 makes a rotational motion and the case of a rectilinear motion is described, but even when the rotary motion and the rectilinear motion are simultaneously carried out, they are divided into a rotational direction component and a rectilinear direction component, and respective signals, namely, DIR
PLS / D1 occurs.

FIG. 7 is a diagram for explaining the drive amount detecting means 9 in FIG. In FIG. 7, reference numeral 41 denotes a pulse plate attached to the rotary shaft of the motor 7, and the pulse plate 41 is provided with light transmitting patterns at predetermined intervals. 42 is a photoreflector including a light emitting source and a phototransistor,
The rotation of the pulse plate 41 forms an output each time the transparent pattern passes through the photo reflector 42. 43
Is a comparator for converting the signal from the photo reflector 42 into a pulse, and the output of the comparator 43 is connected to the microcomputer 1.

FIG. 8 is a diagram for explaining the edge detecting means 10 in FIG. 44-a, 44-b, 44-c are conductive patterns, and the conductive pattern 44-a is connected to the ground. The conductive patterns 44-b and 44-c are connected to the pull-up resistors 46 and 47 and the microcomputer 1, respectively. A brush 45 slides on the conductive pattern 44 in accordance with the movement of the focus adjusting optical system 12. The conductive pattern 44 is formed through the brush 45 when the focus adjusting optical system 12 is at the infinite end position.
When b is short-circuited and the focus adjusting optical system 12 is at the closest position, the conductive patterns 44-a and 44- are connected via the brush 45.
c is short-circuited. ZONE the signal of the conductive pattern 44-b
When the signals 0, 44-c are set to ZONE1, ZONE0 becomes low level at the infinite end and becomes high level except at the infinite end. Similarly, ZONE1 is at a low level at the close end, and ZONE1 is at a high level except at the close end.

FIG. 9 is a diagram for explaining the position detecting means 11 in FIG. Reference numeral 48 denotes a potentiometer provided on the fixed portion of the lens barrel, one end of which is connected to the ground. Reference numeral 49 is a brush that slides on the potentiometer 48 with the movement of the magnification adjusting optical system, 50 is a pull-up resistor, 51 is an A / D converter, and the input and pull-up resistor of the A / D converter 51. Both 50 are electrically connected to the brush 49. One end of the potentiometer 48 is connected to the ground, and when the brush 49 slides straight on the potentiometer, the resistance value between the brush 49 and the ground changes to divide the power supply voltage Vcc. The input voltage of the / D converter 51 also changes. This input voltage is V2. The output of the A / D converter 51 is connected to the microcomputer 1 and the signal obtained by digitizing the voltage V2 is D2. FIG. 10 shows a brush 49
2 and the voltage V2 are shown. In the present embodiment, the position of the variable power optical system 13 is moved according to the position of the manual ring 2 in the straight traveling direction. Particularly, the voltage V1 and the voltage V2 are equal. The position of the variable power optical system 13 is moved so that

12 to 16 are flow charts showing the operation of the microcomputer 1 of FIG. The microcomputer 1 has two interrupt functions: an interrupt due to a rising edge of the output signal PLS of the exclusive OR gate 34 and an interrupt due to overflow of an internal timer counter (hereinafter abbreviated as TC). In addition, a flag DRV_REQ indicating whether or not the focus adjustment motor can be driven, a flag PLS_FLAG indicating that the time interval of the rising edge of the output signal PLS is being measured, and a memory TM for storing the TC value, a drive power for the focus adjustment motor. Representing memory P
W, a table of the driving power of the motor 7 according to the time interval of the rising edge of the output signal PLS. This embodiment will be described for each step below.

FIG. 12 is a flowchart of the main routine.

STEP 1: After turning on the main switch (not shown), the microcomputer 1 resets the TC value and the flag DRV_R.
Clear EQ and PLS_FLAG memory TM PW. Also, each interrupt is prohibited and the motors 7 and 8 are stopped.

STEP2: Permitting an interrupt by the rising edge of the output signal PLS of the exclusive OR 34. When an interrupt occurs, the process proceeds to the PLS interrupt routine from STEP30 in FIG.

STEP3: STEP11 to STEP17
The focus control motor is controlled.

STEP4: STEP21 to STEP25
The motor for variable power adjustment is controlled and the process returns to STEP3. Next, regarding the focus control motor control in STEP 3, FIG.
Will be explained.

STEP 11: If the flag DRV_REQ indicating whether or not the focus adjustment motor can be driven is reset, the motor 7 is not driven. That is, STEP17
And the motor 7 is stopped. In addition, the flag DRV_
If REQ is in the set state, the process proceeds to STEP12.

STEP 12: The output DIR of the flip-flop 33 is fetched and the rotation direction of the manual ring 2 is detected. In this embodiment, focus adjustment is performed in the infinite direction when the DIR is set, and focus adjustment is performed in the close-up direction when the output DIR is reset. If the output DIR is set, the process proceeds to STEP 14, and if it is reset, the process proceeds to STEP 13.

STEP 13: When the signal ZONE0 from the edge detecting means 10 is fetched and reset, the focus adjusting optical system has reached the infinite edge, so there is no need to drive it further in the infinite direction. Therefore, STEP17
Go to and stop the motor 7.

STEP 14: If the signal ZONE1 from the edge detecting means 10 is fetched and reset, the focus adjusting optical system has reached the closest edge, so it is not necessary to drive it further toward the near edge. Therefore, STEP17
Go to and stop the motor 7.

STEP 15: The focus adjusting motor 7 is driven in the infinite direction by the power stored in the memory PW, and the process returns.

STEP 16: The focus adjusting motor 7 is driven in the closest direction by the power stored in the memory PW, and the process returns.

STEP 17: Here, the motor 7 is stopped because the manual ring 2 has not been operated in the rotational direction or has reached the end in the direction in which the focus adjusting optical system is trying to move even if it is operated. And return.

STEP 21 to STEP 25 in FIG. 14 are S
The motor control for variable power adjustment of TEP4 is described.

STEP 21: The output D1 of the A / D converter 36 representing the position of the manual ring 2 in the straight traveling direction and the output D2 of the A / D converter 51 representing the position of the magnification adjusting optical system 13 are fetched. If D1 = D2,
The variable magnification is adjusted according to the position of the manual ring 2 in the straight direction. Therefore, in this case, since it is not necessary to drive the variable power adjusting motor 8, the process proceeds to STEP 25 and is stopped. If D1 ≠ D2, the process proceeds to STEP22.

Step 22: If D1 <D2, the variable magnification adjustment optical system is on the telephoto side with respect to the variable magnification adjustment to be adjusted by the manual ring 2, so the operation proceeds to STEP24, and the variable magnification adjustment motor 8 is set to the wide angle side. Drive. On the other hand, if D1> D2, the variable-magnification adjustment optical system is on the wide-angle side with respect to the variable-magnification adjustment to be adjusted with the manual ring 2, so proceed to STEP 23 to drive the variable-magnification adjustment motor 8 to the telephoto side Let

STEP 23: The motor 8 for variable power adjustment is driven to the telephoto side and the process returns.

STEP 24: The variable power adjustment motor 8 is driven to the wide angle side and the process returns.

STEP 25: Stop the motor 8 for variable magnification adjustment and return.

FIG. 15 shows S30 in STEP30 to STEP39.
The PLS interrupt routine permitted by TEP2 is described.

STEP 30: Disable interrupts due to TC overflow.

Step 31: If the flag PLS_FLAG is in the reset state, that is, if the time interval of the rising edge of the output signal PLS is not being measured at present, the process proceeds to STEP 36. If the flag PLS_FLAG is set, that is, if the time interval of the rising edge of the output signal PLS is currently being measured, the process proceeds to STEP32.

STEP 32: Stop TC.

STEP 33: The current TC value is stored in the memory TM
To store. At this time, the memory TM displays the previous output signal PL
The time interval from the rising edge of S to the rising edge of the current output signal PLS is shown. Therefore, this memory TM represents the speed of rotation of the manual ring 2.

STEP 34: The drive power of the motor 7 corresponding to the time interval TM is read from the table and stored in the memory PW. The time interval TM and the driving power PW
The relationship is as shown in FIG. 11, for example.

STEP 35: The flag DRV_REQ is set.

STEP 36: Reset TC.

STEP 37: Start TC and start measuring the time interval until the next rising edge of the output signal PLS.

STEP 38: Flag PLS_FLA indicating that the time interval of the rising edge of the output signal PLS is being measured
Set G.

STEP 39: Permit interrupt due to TC overflow. The overflow time of TC is set to be equal to the time interval of the rising edge of the output signal PLS, which can be regarded as that the manual ring 2 is not rotating. Therefore, when this TC overflow interrupt occurs, STEP 41 to STEP 43 in FIG.
Then, the process for stopping the rotational movement of the manual ring 2 is performed.

STEP 41: Stop TC.

STEP 42: Since it can be considered that the rotation of the manual ring 2 has stopped, the flag PLS_FLAG indicating that the time interval of the rising edge of PLS is being measured is reset.

STEP 43: Since the rotation of the manual ring 2 can be regarded as stopped, the flag DRV_REQ is reset to stop the motor 7, and the process returns.

As described above, either one or both of the control of the focus adjusting motor by the rotation operation of the manual ring 2 and the control of the zooming adjusting motor by the straight operation of the manual ring 2 are performed at the same time. You can

(Embodiment 2) FIG. 17 is a block diagram for explaining the second embodiment of the present invention. In FIG. 17, reference numeral 14 is an automatic focusing mode (hereinafter referred to as AF mode).
And actuator manual focus adjustment mode (hereinafter MF
Switch to select AF mode when ON.
Set to MF mode when off. Reference numeral 15 denotes an end detecting means for detecting that the optical system for variable power adjustment is at the wide-angle end and the telephoto end.
16 is a microcomputer provided in the lens (hereinafter abbreviated as microcomputer), 17 is a microcomputer provided in the camera body (hereinafter abbreviated as microcomputer)
The microcomputers 16 and 17 each have a function of communicating with each other. Reference numeral 18 is a focus detecting means.

FIG. 18 is a diagram for explaining the edge detecting means 15 in detail. Reference numerals 52-a, 52-b, and 52-c are conductive patterns, and the conductive pattern 52-a is connected to the ground. The conductive patterns 52-b and 52-c are connected to the pull-up resistors 53 and 54 and the microcomputer 1, respectively. Reference numeral 55 is a brush that slides on the conductive pattern 52 in accordance with the movement of the magnification adjusting optical system 13. The conductive pattern 52 is short-circuited between the conductive patterns 52-a and 52-b via the brush 55 when the magnification adjusting optical system 13 is at the telephoto end, and the magnification adjusting optical system 13 is at the wide-angle end position. At some time, the conductive patterns 52-a and 52-c are short-circuited via the brush 55. The signal of the conductive pattern 52-b is set to ZONE2, 5
If the signal of 2-c is ZONE3, ZON at the telephoto end
E2 becomes low level and becomes high level except at the telephoto end. Similarly, ZONE3 becomes low level at the wide-angle end, and ZONE3 becomes high level except at the wide-angle end.

19 to 24 are flowcharts showing the operation of the microcomputer 16 of FIG. The microcomputer 16 interrupts by the rising edge of the output signal PLS of the exclusive OR gate 34, interrupts by the rising edge of the output pulse (hereinafter referred to as FP) of the comparator 43 of the drive amount detection means 9 and an internal timer counter (hereinafter abbreviated as TC). Interrupt due to overflow,
It also has four interrupt functions of communication interrupt from the camera microcomputer 17. Further, a flag DRV_REQ0 indicating whether or not the focus adjustment motor can be driven and a flag DRV_RE indicating whether or not the focus adjustment motor can be driven.
Q1, flags PLS_FLAG0 and PLS_FLAG1 indicating that the time interval of the rising edge of PLS is being measured, a flag AF_MOD for storing the state of the switch 14,
A memory TM for storing the TC value, a memory PW0 indicating the drive power of the focus adjustment motor, a memory PW1 indicating the drive power of the zooming adjustment motor, a memory ZAN_P indicating the remaining drive amount, and the number of inputs of the pulse FP. Memory P
LS_C, a memory FPC that represents the drive amount from the camera,
It has a memory MDIR indicating a driving direction. This embodiment will be described for each step below.

FIG. 19 is a flow chart of the main routine.

STEP 51: After the main switch (not shown) is turned on, the microcomputer 1 clears the flag memory. Also, each interrupt is prohibited and the motors 7 and 8 are stopped.

STEP 52: Permits a communication interrupt from the camera microcomputer 17. When a communication interrupt occurs, the process proceeds to the communication interrupt routine in STEP57 of FIG.

STEP 53: Permitting an interrupt by the rising edge of the output signal PLS of the exclusive OR gate 34. When an interrupt occurs, the STE of Fig. 22
Proceed to the PLS interrupt routine from P80.

STEP 54: The state of the switch 14 is detected, and if the switch 14 is on, AF_MOD is set, and if it is off, AF_MOD is reset.

STEP 55: STEP 61 to STEP 6
7. Focusing motor control of 7.

STEP 56: STEP 71 to STEP 7
The motor for variable power adjustment 5 is controlled, and the process returns to STEP 54.

FIG. 20 shows a routine when a communication interrupt from the camera microcomputer 17 occurs. Originally, various data are exchanged between the lens and the camera, but here, only the part related to the present invention, that is, the case where the automatic focus adjustment drive command is received from the camera microcomputer 17, will be described.

STEP 57: The drive amount and drive direction of the automatic focus adjustment drive sent from the camera microcomputer 17 are stored in the memory MDIR.DRV_P, respectively.

STEP 58: DRV_MOD and DR
Set V_REQ0 so that automatic focus adjustment is performed by the focus adjustment motor control of the main routine.

STEP 59: The memory PLS_C is cleared, the interrupt by the rising edge of the output pulse (hereinafter referred to as FP) of the comparator 43 of the drive amount detecting means 9 is permitted, and the process returns.

FIG. 21 shows a focus control motor control routine in STEP55.

STEP 61: If the flag DRV_REQ0 indicating whether or not the focus adjusting motor can be driven is reset, the motor 7 is not driven. That is, STEP
Proceeding to 69, the motor 7 is stopped. Also, the flag DR
If V_REQ0 is set, the process proceeds to STEP62.

STEP 62: S is set if the flag DRV_MOD is set, that is, if driving is performed by automatic focus adjustment.
Proceed to TEP63. If DRV_MOD has been reset, the process proceeds to STEP64.

STEP 63: The drive amount DRV_P obtained by the drive command from the camera is compared with the actual drive amount FPC, and if FPC is not smaller than DRV_P, STEP 6
4. If FPC is smaller than DRV_P, STEP69
Proceed to and stop the drive. Here, it is determined whether or not the actual drive amount has reached the drive amount from the camera, and if so, the motor 7 is stopped.

STEP 64: The drive direction of the focus adjusting motor is obtained from the memory MDIR, and if MDIR is set, the operation proceeds to STEP 65, and if MDIR is reset, the operation proceeds to STEP 66.

STEP 65: Since the focus adjusting optical system has reached the infinite end if the signal ZONE0 from the end detecting means 10 is fetched and reset, it is not necessary to drive it further in the infinite direction. Therefore, STEP69
Go to and stop the motor 7.

STEP 66: If the signal ZONE1 from the edge detecting means 10 is fetched and reset, the focus adjusting optical system has reached the closest end, so there is no need to drive it further in the closer direction. Therefore, STEP69
Go to and stop the motor 7.

STEP 67: The focus adjusting motor 7 is driven in the infinite direction by the power stored in the memory PW0,
To return.

STEP 68: The focus adjusting motor 7 is driven in the close range by the power stored in the memory PW0,
To return.

STEP 69: The motor 7 is stopped, interruption by the rising edge of the output pulse of the comparator 43 (hereinafter referred to as FP) is prohibited, and flag D
Reset RV_MOD and return.

Steps 70 to 79 of FIG. 22 are S
The motor control for variable power adjustment of TEP4 is described.

STEP 70: When the memory AF_MOD is reset, the process proceeds to STEP 76, and variable magnification adjustment is performed according to the rotating operation of the manual ring 2. Also, AF
If _MOD is set, proceed to STEP 71,
Adjust the magnification according to the straight operation of the manual ring 2.

STEP 71: The output D1 of the A / D converter 36 representing the position of the manual ring 2 in the straight traveling direction and the output D2 of the A / D converter 51 representing the position of the magnification adjusting optical system 13 are fetched. If D1 = D2,
The variable magnification is adjusted according to the position of the manual ring 2 in the straight direction. Therefore, in this case, since it is not necessary to drive the variable power adjustment motor 8, the process proceeds to STEP 75 and is stopped. If D1 ≠ D2, the process proceeds to STEP72.

Step 52: If D1 <D2, the variable power adjustment optical system is on the telephoto side with respect to the variable power adjustment to be adjusted by the manual ring 2.
Then, the motor for zooming 8 is driven to the wide-angle side.
On the other hand, if D1> D2, the variable-magnification adjustment optical system is on the wide-angle side with respect to the variable-magnification adjustment to be adjusted with the manual ring 2, so proceed to STEP 73 to drive the variable-magnification adjustment motor 8 to the telephoto side. Let

STEP 73: The variable power adjusting motor 8 is driven to the telephoto side by the power stored in the memory PW1, and the process returns.

STEP 74: The variable power adjustment motor 8 is driven to the wide-angle side by the power stored in the memory PW1, and the process returns.

STEP 75: Stop the motor 8 for variable magnification adjustment and return.

STEP 76: If the flag DRV_REQ1 indicating whether or not driving of the variable magnification adjustment motor is possible is in the reset state, the motor 8 is not driven. That is, STEP7
Go to 5 and stop the motor 7. Also, the flag DRV
If _REQ1 is set, the process proceeds to STEP77.

STEP 77: The output DIR of the flip-flop 33 is fetched and the rotation direction of the manual ring 2 is detected. If the DIR is set, the process proceeds to STEP 78, and if it is reset, the process proceeds to STEP 79.

STEP 78: If the signal ZONE2 from the end detecting means 15 is fetched and reset, the zooming adjustment optical system has reached the telephoto end, so there is no need to drive it further in the telephoto direction. Therefore, STEP75
Go to and stop the motor 8.

STEP 79: If the signal ZONE3 from the edge detecting means 15 is fetched and reset, the focus adjusting optical system has reached the wide-angle end, so there is no need to drive it further in the wide-angle direction. Therefore, STEP75
Go to and stop the motor 8.

23. STEP 80 to STEP 103 in FIG. 23 describe the PLS interrupt routine permitted in STEP 53.

STEP 80: Disable interrupts due to TC overflow.

STEP 81: In the second embodiment, the focus adjustment by the rotation operation of the manual ring 2 is prohibited in the AF mode, and if the rotation operation is performed, the magnification adjustment according to the rotation operation is performed. Further, in the AF mode, the variable magnification adjustment by the straight operation of the manual ring 2 is prohibited. Here, if the flag AF_MOD indicating the state of the switch 14 is set, the process proceeds to STEP 93, and if it is reset, the process proceeds to STEP 82.

STEP 82: STEP 82 to STEP 9
Reference numeral 1 is a PLS interrupt routine generated by the rotational movement of the manual ring 2 for performing focus adjustment. First, the flag PLS_FLAG1 is reset.

STEP 83: Reset DRV_REQ1.

STEP 84: Flag PLS_FLAG0
Is in the reset state, that is, if the time interval of the rising edge of the output signal PLS for focus adjustment is not currently being measured, the process proceeds to STEP 89. If the flag PLS_FLAG0 is set, that is, the time interval of the PLS rising edge for focus adjustment is currently being measured, the process proceeds to STEP85.

STEP 85: Stop TC.

STEP 86: The current TC value is stored in the memory TM
To store. At this time, the memory TM displays the previous output signal PL
The time interval from the rising edge of S to the rising edge of the current output signal PLS is shown. Therefore, this memory TM represents the speed of rotation of the manual ring 2.

STEP 87: The drive power of the motor 7 corresponding to the time interval TM is read from the table and stored in the memory PW0. The time interval TM and the driving power P
The relationship of W0 is as shown in FIG. 11, for example.

STEP 88: The flag DRV_REQ0 is set.

STEP 89: Reset TC.

STEP 90: Start TC and start the time interval until the next rising edge of the output signal PLS.

STEP 91: Flag PLS_indicating that the time interval of the rising edge of PLS for focus adjustment is being measured
Set FLAG0 and proceed to STEP103.

STEP93: STEP93 to STEP1
Reference numeral 03 is a PLS interrupt routine generated by the rotational movement of the manual ring 2 for adjusting the variable magnification. First, the flag PLS_FLAG0 is reset.

STEP 94: Reset DRV_REQ0.

STEP 95: Flag PLS_FLAG1
Is in the reset state, that is, if the time interval of the rising edge of the output signal PLS for variable power adjustment is not currently being measured, the process proceeds to STEP100. Flag PLS_FLAG1
Is in the set state, that is, if the time interval of the rising edge of the output signal PLS for the variable power adjustment is currently being measured, ST
Proceed to EP96.

STEP 96: Stop TC.

STEP 97: The current TC value is stored in the memory TM
To store. At this time, the memory TM represents the time interval from the rising edge of the previous PLS to the rising edge of the current PLS. Therefore, this memory TM represents the speed of rotation of the manual ring 2.

STEP 98: The drive power of the motor 8 corresponding to the time interval TM is read from the table and stored in the memory PW1. The time interval TM and the driving power P
The relationship of W1 is as shown in FIG. 11, for example.

STEP 99: The flag DRV_REQ1 is set.

STEP 100: Reset TC.

STEP 101: Start TC and start measuring the time interval until the next rising edge of the output signal PLS.

STEP 102: A flag PLS_FLAG1 representing that the time interval of the rising edge of the output signal PLS for adjusting the magnification is being measured is set.

STEP 103: Permit interrupt due to TC overflow. The overflow time of TC is set to be equal to the time interval of the rising edge of the output signal PLS, which can be regarded as that the manual ring 2 is not rotating. Therefore, when this TC overflow interrupt occurs, STEP 110 to STEP 1 in FIG.
The routine proceeds to the routine of 13 to stop the rotational movement of the manual ring 2.

STEP111: Stop TC.

STEP112: Since the rotation of the manual ring 2 can be regarded as stopped, the flag PLS_FL indicating that the time interval of the rising edge of the output signal PLS is being measured.
Reset AG0.1.

STEP113: Since the rotation of the manual ring 2 can be regarded as stopped, the flag DRV_REQ0.1 is reset to stop the motor 7 or the motor 8, and the process returns.

FIG. 25 is an interrupt routine when an interrupt occurs due to the rising edge of the output pulse (hereinafter referred to as FP) of the comparator 43 of the drive amount detecting means 9.

STEP 115: Add the contents of the memory PLS_C representing the number of times the rising edge of the output pulse FP has been input.

STEP116: The value of PLS_C is subtracted from the drive amount DRV_P received from the camera to obtain ZAN_P.
To store. That is, ZAN_P contains the amount of remaining drive for the amount of drive from the camera.

STEP 117: The drive power of the focus adjusting motor 7 corresponding to the remaining drive amount ZAN_P is referred to from the table, stored in PW0, and then the process returns.

As described above, in the second embodiment, in the MF mode, the focus adjusting motor is controlled by rotating the manual ring 2 and the manual ring 2 is rotated.
It is possible to control either or both of the motors for variable power adjustment by the straight-ahead operation. In AF mode, the motors for variable power adjustment are controlled only by rotating the manual ring 2. Ban.

In the second embodiment, manual focus adjustment is prohibited only in the automatic focus adjustment mode, but on the contrary, manual variable magnification adjustment may be prohibited when not automatic focus adjustment.

[0119]

As described above, according to the present invention, the focus adjustment and the variable magnification adjustment can be performed by the actuator with one manual operation member, and the optical device can be downsized and the operability can be improved. .

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment.

FIG. 2 is a diagram illustrating in detail a detecting unit that detects a manual ring and a manual ring rotating operation / straightening operation.

FIG. 3 is a diagram showing a detection unit of a rotation operation.

FIG. 4 is a timing diagram of signals generated by the detection means of FIG.

FIG. 5 is a diagram for explaining a straight-ahead operation detecting unit in detail.

FIG. 6 is a relationship diagram between a position of a manual ring in a straight traveling direction and V1.

FIG. 7 is an explanatory diagram of drive amount detection means.

FIG. 8 is an explanatory diagram of an edge detection unit.

FIG. 9 is a detailed view of a position detecting unit of the variable power optical system.

FIG. 10 is a relationship diagram between the position of the variable power optical system and V2.

FIG. 11 is a relationship diagram showing the relationship between the drive power of the focus adjustment motor and the PLS signal input.

FIG. 12 is a flowchart for explaining the first embodiment.

FIG. 13 is a flowchart for explaining the first embodiment.

FIG. 14 is a flowchart for explaining the first embodiment.

FIG. 15 is a flowchart for explaining the first embodiment.

FIG. 16 is a flowchart for explaining the first embodiment.

FIG. 17 is a block diagram showing a second embodiment.

FIG. 18 is a detailed view of the edge detecting means.

FIG. 19 is a flowchart for explaining the second embodiment.

FIG. 20 is a flowchart illustrating a second embodiment.

FIG. 21 is a flowchart for explaining the second embodiment.

FIG. 22 is a flowchart for explaining the second embodiment.

FIG. 23 is a flowchart for explaining the second embodiment.

FIG. 24 is a flowchart for explaining the second embodiment.

FIG. 25 is a flowchart for explaining the second embodiment.

[Explanation of symbols]

1 Microcomputer 2 Manual ring 3 Manual ring rotation detecting means 4 Manual ring straight-ahead detecting means 5.6 Motor driver 7.8 Motor for focus adjustment / magnification adjustment 12 Focus adjustment optical system 13 Magnification adjustment optics System 10 Edge detection means for detecting the edge of the focus adjustment optical system 11 Position detection means for variable power adjustment 14 Switch for selecting whether or not automatic focus adjustment mode 17 Camera microcomputer 18 Focus detection means

Claims (3)

[Claims] 1. An operating member, a detecting means for detecting an operating state of the operating member, a focus adjusting actuator, a magnification adjusting actuator, and the focus adjusting actuator according to a signal from the detecting means. An optical device comprising a control means for selectively driving and controlling either one of the magnification adjusting actuators or both. 2. The operating member is configured to be capable of rotational movement and rectilinear movement, the detecting means includes rotational movement detecting means and rectilinear movement detecting means of the operating member, and the control means includes the rotational movement detecting means. 2. The optical apparatus according to claim 1, wherein the focus adjustment actuator is drive-controlled in accordance with the signal of 1., and the magnification adjustment actuator is drive-controlled in response to the signal from the rectilinear motion detecting means. 3. An operating member attached to the lens barrel, a detecting means for detecting an operating state of the operating member, a focus adjusting actuator, a variable power adjusting actuator, an automatic focus adjusting mode and a manual focus adjusting. Selection means for selecting a mode, and drive control of one of the focus adjustment actuator and the magnification adjustment actuator according to a signal from the detection means and a signal from the selection means, and prohibits the other. An optical device comprising a control means for controlling.