JP2888702B2 - Optical equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a focusing lens or a variable magnification lens by converting a manual focusing operation or a manual magnification change operation into an electric signal and controlling a power source such as a motor by the electric signal. The present invention relates to an optical apparatus having a power manipulation type optical member driving device configured to move a lens to an appropriate position.

[0002]

2. Description of the Related Art Conventionally, a focus ring and a zoom ring are rotated by hand, converted into electric signals, and a power source is driven by the electric signals to move a focusing lens and a zoom lens. Single lens reflex interchangeable lenses equipped with a power focus device and a power zoom device are commercially available.

In such an interchangeable lens, the direction of rotation of the focus ring or zoom ring and the direction of movement of the lens differ, for example, depending on the manufacturer of the interchangeable lens.
In order to solve this, a proposal has been made in which a simple changeover switch is separately provided to change the direction of movement of the lens with respect to the direction of rotation of the rotating ring so that the lens can be appropriately moved in the direction desired by the photographer.

[0004]

However, according to the interchangeable lens, it is necessary to operate a changeover switch provided separately for each interchangeable lens. Forgetting the changeover or losing the operation of the switch, it is not always easy to use. In some cases, the lens may actually move in the opposite direction even if the user intends to operate in the desired direction.

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem, and to selectively confirm the operation direction by visual observation. In particular, it is not necessary to separately operate a switch, so that a device such as a camera to be mounted is mounted. It is an object of the present invention to provide an optical device such as a lens barrel which can be used by a user without erroneous operation in conformity with the above.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is as follows.
The first configuration to be realized is that a manually operated rotary operation member is used.
Having an optical member according to the rotation state of the rotation operation member.
In the optical device whose moving state is controlled, the rotation operation is performed.
By moving the member in a direction different from the rotation direction
The optical member with respect to the rotation direction of the rotation operating member.
Is configured to switch the moving direction of the moving object. this
In the configuration, the rotation direction of the rotation operation member and the movement
When switching the relationship with the
Reliable switching because it only needs to be moved in a direction different from the direction
Becomes possible. A second configuration for realizing the object of the present invention is:
In the first configuration described above, the rotation operation member is
By moving the optical member in the optical axis direction, the rotation operation is performed.
Switching the direction of movement of the optical member with respect to the direction of rotation of the member
It is configured to obtain. In this configuration,
Switching the relationship between the rotation direction of the working member and the moving direction of the optical member
Move the rotary operation member in the optical axis direction of the optical member.
Switching can be performed without erroneous operation. Departure
A third configuration for achieving the object of the present invention is the second configuration described above.
, The rotation direction of the rotation operation member and the optical member
Display means for displaying the relationship of the moving direction of the
It is a thing. In this configuration, switching is performed in the current state
Can be determined with a simple configuration. Book
The fourth configuration for realizing the object of the invention is the third configuration described above.
In the above, the display means, the rotation operation member is the
Display contents switch when moved in the optical axis direction of the optical member
It was made. In this configuration, rotation after switching
Check the relationship between the operating member and the moving direction of the optical member
Becomes possible. A fifth configuration for realizing the object of the present invention is:
A rotating operation member that is manually operated;
Light whose movement state of the optical member is controlled according to the rotation state of
In the scientific instrument , the rotation operation member with respect to the rotation direction
Switching means for switching the moving direction of the optical member;
Relationship between the rotation direction of the rotation operation member and the movement direction of the optical member
And a display means for displaying. With this configuration
Indicates the rotation direction of the rotary operation member and the optical member by the display means.
Check the relationship with the moving direction of the switch and switch the switching means
By doing so, the optical
The direction of movement of the member can be set. Object of the present invention
The sixth configuration for realizing is the same as the fifth configuration described above.
Wherein the switching means has the rotary operation member.
You. In this configuration, the switching means has a rotating operation member.
Because there is no need to provide a separate rotating operation member,
It is possible to reduce the number of points. The purpose of the present invention
The seventh configuration that appears is a modification of the first to sixth configurations described above.
In any one of the above, the optical member has a lens
It is like that. In this configuration, the lens barrel
Apply to drive the lens. Object of the present invention
The eighth configuration for realizing is the same as the seventh configuration described above.
And the rotation operating member is a focus ring or a zoom.
Mulling. In this configuration, the lens barrel
Perform focus operation or zoom operation by applying
Can be.

[0007]

【Example】

First Embodiment FIGS. 1 to 3 show a first embodiment of an optical apparatus according to the present invention.

Reference numeral 1 denotes a focusing lens unit (hereinafter referred to as a lens unit) for focusing, 2 denotes a distance display printed on the lens unit 1, and 3 denotes a lens body which is a fixing portion of the lens.

Reference numeral 4 denotes a focus ring for instructing a drive direction and a drive amount of the lens unit 1. The focus ring 4 is rotatable for focusing and is movable in the direction of an arrow 7 along the optical axis. The ring 4 can be used as a direction switch.

Reference numeral 5A denotes a first direction display unit which indicates the moving direction of the lens unit 1 with respect to the rotation direction displayed by printing or the like on the front part of the lens body 3, and 5B is arranged in parallel behind the first direction display unit 5A. The second direction display unit indicates the moving direction of the lens unit 1 with respect to the rotation direction displayed by printing or the like, and the display form of these two direction display units is reversed in the rotation direction.

Reference numeral 6 denotes a display window in which a part of the focus ring 4 is cut out so that the direction display sections 5A and 5B can be selectively viewed from the outside. In the state shown in FIG. The first direction indicator 5A can be observed by sliding the focus ring 4 forward.

That is, when the focus ring 4 is set on the C side, which is the horizontal direction with respect to the optical axis of the lens, the display unit 6 displays the lens unit 1 with respect to the rotation direction of the focus ring 4.
When the focus ring 4 is turned to the A side, the lens unit 1 is driven in the infinite direction, and when the focus ring 4 is turned to the B side, the lens unit 1 is driven in the close direction.

When the focus ring 4 is set to the D side, the moving direction of the lens unit 1 with respect to the rotation direction of the focus ring 4 is displayed on the display window 6 at the same time as the A direction, and the focus ring 4 is turned to the A side. The lens unit 1 is driven in the closest direction, and when turned to the B side, it is driven in the infinite direction.

When the focus ring 4 is moved back and forth to switch the direction, the range of movement is
The relationship between the movement direction of the lens unit 1 and the rotation direction of the focus ring 4 is determined by the switch 15.

Therefore, according to this embodiment, by moving the focus ring 4 along the optical axis , the contents displayed on the display window 6 on the external appearance are switched by the direction display units 5A and 5B, and the display window 6 is switched. since the lens unit 1 and turn the focus ring 4 is driven in accordance with the displayed direction, it is possible to perform <br/> focus manual operation without mistake by the user.

FIG. 2 is a block diagram showing the system configuration of this embodiment.

[0017] 1 denotes a lens unit for adjusting the pin cement, a focus ring for commanding the drive amount and drive direction of the lens unit 1 is 4, 10 focus ring 4
An encoder for detecting the amount and direction of rotation when rotating the motor, 11 an FV converter for converting the speed output from the encoder 10 to a voltage, and 12 converting the voltage output of the FV converter 1 to a digital output An A / D converter 13 for controlling the lens; 13 a microcomputer for controlling various types of lenses; 14 a rotation direction detecting circuit for detecting the rotation direction from the output of the encoder 10; 15 a focus ring 4 along the optical axis. rotational direction changeover switch for determining the driving direction of the lens unit 1 by moving Te, 16 represents a motor unit for driving the lens unit 1, 17 for detecting the rotational speed and rotational amount of the motor unit 16 An encoder 18 is a drive circuit for driving the motor unit 16.

FIG. 5 is a flowchart in which the functions of each unit described in the block diagram shown in FIG. 2 are considered.

In FIG. 1, when the focus ring 4 is turned, the directly connected encoder 10 also rotates at the same time, and its output is distributed to the FV conversion circuit 11 and the rotation direction detection circuit 14. Next, the FV conversion circuit 11 converts the frequency output of the encoder 10 into a voltage output and outputs the voltage output to the A / D converter 12. The A / D converter 12 further converts the digital output into a digital output and sends it to the microcomputer 13. The microcomputer 13 detects that the output of the A / D converter 12 has changed (101), immediately calculates the difference or ratio from the previous voltage (102), and sets it as ΔV. ΔV is calculated using a certain function value (f) to derive the driving amount Y of the lens unit 1 (103). Next, the rotation direction detection circuit 14 detects the rotation direction of the focus ring 4 (10
4) Further, the driving direction of the lens unit 1 is detected by the rotation direction switch 15 (105), and the driving direction of the lens unit 1 is determined from the state of each switch (1).
06).

Next, the drive direction of the lens unit 1 is determined (107), and the drive circuit 18 is driven so as to be driven by the drive amount Y.
Are driven (108, 109). At the same time as the motor 16 rotates, the encoder 17 also rotates, and the drive amount is controlled by the microcomputer 1.
Send to 3. The microcomputer 13 compares the value with the drive amount Y and terminates the drive when the same value is reached (110). When the driving is completed, start from the beginning.

When the rotation direction switch 15 is switched, the driving direction of the lens unit 1 is switched from infinity to close or from close to infinity.

Second Embodiment FIG. 4 shows a second embodiment.

In the first embodiment, the description has been given of the direction switching for focusing. However, the present embodiment is directed to the configuration for switching the direction for zooming. In this case, the same operation as in the first embodiment can be performed. Will be described.

In FIG. 4, reference numeral 41 denotes a zoom lens unit (hereinafter referred to as a zoom unit) for changing the magnification.
Reference numeral 2 denotes a focal length displayed on the zoom unit 41 by printing or the like; 43, a lens body as a fixed portion of the lens; 44, a zoom ring for instructing the driving direction and driving amount of the zoom unit 41; Is a direction display unit that indicates the moving direction of the zoom unit 41 with respect to the rotation direction displayed on the lens body 43 by printing or the like, and the display forms of the two direction display units 45A and 45B are reversed in the rotation direction.

Reference numeral 46 denotes a display window in which the zoom ring 44 is notched so that the direction display portions 45A and 45B can be selectively viewed from the outside. Reference numeral 47 denotes a switching direction when the zoom ring 44 is used as a changeover switch. Other operations, switching methods, and the like are the same as those of the focus device according to the first embodiment, and a description thereof will not be repeated.

That is, also in this embodiment, the rotation direction for the zoom operation can be selected, and the zoom lens can be moved to the wide angle side or the telephoto side without erroneous operation.

[0027]

According to the first aspect of the present invention, the rotating operation is performed.
Switching the relationship between the rotation direction of the member and the movement direction of the optical member
The rotation operation member in a direction different from the rotation direction.
Since it only needs to be moved, reliable switching is possible. According to the invention according to claim 2, the rotation direction of the rotary operation member
When switching the relationship between the
It is sufficient to move the working member in the optical axis direction of the optical member.
Switching without operation becomes possible. According to the invention according to claim 3, switching is performed in the current state.
Can be determined with a simple configuration. According to the invention according to claim 4, the rotation operation after switching is performed.
The relationship between the movement direction of the member and the optical member can be confirmed.
It works. According to the invention according to claim 5, a rotation operation is performed by the display means.
Check the relationship between the rotation direction of the member and the movement direction of the optical member.
The switching operation is performed by switching the switching means.
Set the moving direction of the optical member with respect to the rotation direction of the material.
Can be. According to the invention according to claim 6, the switching means is a rotary operation unit.
It is necessary to provide a separate rotation operation member
Thus, the number of parts can be reduced. According to the invention according to claim 7, the invention is applied to a lens barrel or the like.
The lens can be driven. According to the invention according to claim 8, the lens is applied to a lens barrel, and
Focus operation or zoom operation can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic view showing Embodiment 1 of an optical apparatus according to the present invention.

FIG. 2 is a block diagram schematically illustrating a system according to the first embodiment.

FIG. 3 is a sectional view of FIG. 1;

FIG. 4 is a schematic view showing a second embodiment.

FIG. 5 is a flowchart for explaining the operation of the block diagram in FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Focusing lens unit, 2 ... Distance display, 3 ... Lens body, 4 ... Focus ring, 5 ... Direction display part, 6 ... Display window, 32 ... Stopper, 38 ... Changeover switch, 4
1: lens unit for zooming, 42: focal length display, 4 °
... Lens body, 44 ... Zoom ring, 45 ... Direction display part, 46 ... Display window

Claims (8)

(57) [Claims] A rotary operation member that is manually operated,
The movement state of the optical member according to the rotation state of the rotation operation member
In the optical device controlled by, the rotation operation member is moved in a direction different from the rotation direction.
By doing so, the front with respect to the rotation direction of the rotary operation member
That the moving direction of the optical member is switched.
Characteristic optical equipment. (2) The optical axis of the optical member
In the direction of rotation of the rotary operating member.
The moving direction of the optical member with respect to is switched.
The optical device according to claim 1, wherein: (3) The rotation direction of the rotation operation member and the optical
Having display means for displaying the relationship of the moving direction of the member
The optical device according to claim 2, wherein: (4) The display means is configured to move the rotation operation member forward.
The display contents are switched when the optical member is moved in the optical axis direction.
The optical device according to claim 3, wherein: (5) With a manually operated rotary operation member,
The movement state of the optical member according to the rotation state of the rotation operation member
Is controlled in an optical device, Movement of the optical member with respect to the rotation direction of the rotation operation member
Switching means for switching a moving direction, and rotation of the rotary operation member
Display means for displaying the relationship between the direction and the moving direction of the optical member
An optical device having a step. 6. The switching means has the rotary operation member
The optical device according to claim 5, wherein: 7. It is characterized in that the optical member has a lens.
An optical device according to any one of claims 1 to 6, characterized in that:
machine. Claim 8. The rotary operation member is a focus ring;
Or a zoom ring.
The optical device as described.