JP2720520B2 - Remotely controllable camera system and zoom ring drive - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera system and a zoom ring driving device capable of remotely controlling a zooming operation of a rotary zoom lens for a still camera.

(Prior Art) In recent years, still cameras capable of auto-focusing by driving a motor in a body or in a lens have become popular.

When trying to perform still photography by remote monitoring using this still camera, an image sensor for a video camera, for example, a solid-state image sensor such as a CCD is incorporated or mounted in the viewfinder imaging unit, and further, focus control, aperture control, shutter It becomes possible by incorporating or attaching a transceiver for remote control for performing control.

In this case, it is necessary to prepare a still camera dedicated for remote operation or a device capable of still photography by remote monitoring in a still camera, but a lens having an autofocus function can be used without any improvement.

(Problems to be Solved by the Invention) However, when an attempt is made to add a zooming control function when performing still photography by remote monitoring, a general zoom lens has a manual zooming or auto-zooming function. Body control is also impossible, and in order to achieve this purpose, a dedicated body or a dedicated lens is required to enable zooming shooting by body control or remote monitoring,
For this reason, a plurality of dedicated lenses must be prepared in order to cope with various kinds of photographing, and a high cost is required.

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and when performing still photography by remote monitoring using a rotary zoom lens for still having an autofocus function, the zoom ring can be driven by remote control. It is another object of the present invention to provide a camera system and a zoom ring driving device that can be used for a plurality of rotary zoom lenses for a still having an autofocus function.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a camera body (1); which can be mounted on the camera body and can be rotated about an optical axis to perform focus adjustment. Focus adjustment ring (12
b) and an interchangeable lens (12) having a zoom ring (12c) rotatable about an optical axis for performing zooming; and converting focus adjustment information obtained on the camera body side into driving force. First transmission means (12d) for transmitting a driving force to the focus adjustment ring; a focus adjustment ring drive signal for rotating the focus adjustment ring so that the camera body and the interchangeable lens can be respectively remotely operated; Remote control means (3, 6) for respectively outputting a zoom ring drive signal for rotating the zoom ring; signal input means (31) for inputting the zoom ring drive signal; and the zoom ring drive signal Drive mechanism (32, 36, 36b, 39, 40, 4
Zoom ring driving means (5) comprising: (2, 43, 44, 27)
An exchange adapter (11) that is rotatable about an optical axis by receiving the driving force of the drive mechanism and is engageable with the zoom ring to transmit the rotation to the zoom ring; A second transmission means (16, 23) for transmitting a driving force to the exchange adapter, wherein the remote operation means (3,
When the focus adjustment ring drive signal is output from 6),
Based on the focus adjustment information, the focus adjustment ring (12) is transmitted from the camera body (1) via the first transmission means (12d).
b) causing the focus adjustment to be performed by rotating the zoom ring drive means, and when the zoom ring drive signal is output from the remote control means (3, 6), the zoom ring drive means (5)
Then, the zooming is performed by rotating the zoom ring (12c) via the second transmission means (16, 23).

(Operation) According to the present invention, a signal input means (31) for inputting a zoom ring drive signal and a drive mechanism (32, 36, 36b, 39, 40, 42, 43, 44, 27) a zoom ring driving means (5), which is rotatable about an optical axis by receiving a driving force of a driving mechanism, and which transmits the rotation to a zoom ring (12c). An exchange adapter (11) that can be engaged; and second transmission means (16, 23) for transmitting the driving force of the drive mechanism to the exchange adapter.
When the zoom ring drive signal is output from the remote control means (3, 6), the zoom ring (12c) is rotated from the zoom ring drive means (5) via the second transmission means (16, 23). In the still photography by remote monitoring, the zooming control becomes possible, so that a small number of shutter chances can be greatly increased, and the zoom ring driving device (5) ) Can be used simply by preparing an adapter (11) for a plurality of rotary zoom lenses, so that it can be realized at low cost.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 3 shows a system diagram for performing still photography by remote monitoring. Reference numeral 1 denotes a still camera main body, 2 denotes a funder head in which an image sensor for a video camera, for example, a fixed image sensor such as a CCD is incorporated in a viewfinder imaging unit, 3 denotes transmission / reception of a video signal obtained by the funder head, and frame control. Transmitter / receiver for remote control for performing focus control, aperture control, shutter control, shutter release control, zoom ring drive control, etc.
A mount 5 that can be driven to rotate around an axis is a zoom ring drive device 5 driven by a zoom ring drive signal of the transceiver 3, and 12 is a lens that can be auto-focused under the control of the still camera body 1.

On the other hand, a remote controller 6 for remote operation connected to the transceiver 3 and a remote controller 3 via the remote controller 6 are located at positions away from the still camera body 1.
A monitor television 7 for monitoring the captured image transmitted by the computer is installed.

The gantry 4 and the zoom ring driving device 5 each have an input terminal
4a and 14 can be connected to the terminal 3a of the transceiver 3, but when the gantry 4 and the zoom ring drive 5 are used simultaneously, the input terminal 14 of the zoom ring drive 5 is connected to the transceiver 3
And the input terminal 4a of the gantry 4 is connected to the output terminal 13 of the zoom ring driving device 5.

FIG. 1 is an external view of an embodiment of the present invention. FIG. 1 (a) is a right side view, FIG. 1 (b) is a front view, and FIG. 1 (c) is a left side view.

Here, before describing the zoom ring driving device 5 and the adapter 11 of the present embodiment, the lens 12 will be briefly described with reference to FIG. 2 (a). FIG. 2A shows a partial cross-sectional view in FIG. 1A. In FIG. 2A, a lens 12 includes a focus adjustment ring 12b and a zoom ring 1
2c.

Focusing ring 12b forms a gear 12b ₁ (right side in the drawing) the trailing end, meshes with the gear 12d ₁ of the coupling shaft 12d which is rotatably supported by the fixed lens barrel (not shown). The coupling shaft 12d is engaged with a focusing motor (not shown) provided in the camera body, and focus adjustment information obtained on the camera body side is transmitted to the focus adjustment ring 12 via the focusing motor.
to b.

In other words, the focus adjustment information obtained on the camera body side is converted into a rotational torque from the focusing motor via the coupling shaft 12d and transmitted to the focus adjustment ring 12b, whereby the focus adjustment ring 12b is rotated about the optical axis. Rotate. Then, the focusing lens group (not shown) moves straight back and forth in the optical axis direction by the rotation of the focus adjustment ring 12b, and focusing is performed.

Incidentally, focusing ring 12b has an operation portion 12b ₂ which is exposed to the outside, manual also enables focusing is rotated the operating part 12b ₂ around the optical axis.

Center Meanwhile, the zoom ring 12c is located behind the focusing ring 12b, and an operation portion 12c ₁ that is exposed to the outside in the same manner as the focusing ring 12b, and the optical axis of the operation portion 12c ₁ , The zoom lens unit (not shown) moves straight back and forth, thereby performing zooming.

The present embodiment mainly includes a zoom ring driving device 5 and an adapter 11 fixedly mounted on a zoom ring 12c of a lens 12 mounted on the still camera body 1.

First, the zoom ring driving device 5 includes a main body 8, an output terminal 13 for connecting the gantry 4, an input terminal 14 connected to the terminal 3 a of the transceiver 3, and a tripod screw for attaching the transceiver 3 to the main body 8. 15 and a drive pin 16 projecting in the optical axis direction for driving the adapter 11 in the circumferential direction of the optical axis of the lens 12.
A clutch knob 17 for switching the connection between the drive pin 16 and the drive unit, a wide-side limit ring 18 for limiting the drive area of the drive pin 16, a tele-side limit ring 19,
Fixing knob 20 for fixing the wide-side restriction ring 18
And a fixing knob 21 for fixing the tele-side restriction ring 19
With this, the appearance is made.

The main body 8 includes a fixing portion 8a for fixing the transceiver 3,
While the zoom ring driving device 5 is being driven, the transmitter / receiver 3
Positioning pin 8b that fits into fitting hole 3b of transceiver 3 so that it does not rotate around center, tripod screw hole 8c for mounting gantry 4 screwed on the lower surface of fixing portion 8a, and a circumference through which drive pin 16 passes And a long hole 8d extending in the direction.

The adapter 11 includes a ring 22, a claw 23 having a notch extending in a radial direction for engaging with the drive pin 16, a screw 24 for fixing the claw 23 to the ring 22, and a zoom ring 12c of the lens 12. A rubber 25 fixed to the inner peripheral surface of the ring 22 so as not to cause circumferential slip between the adapter 11 and the adapter 11
Knob 2 for fixing the lens to the zoom ring 12c of the lens 12.
6 and make the appearance.

FIG. 2 shows the internal structure of the present invention. FIG. 2 (a) is a partial cross-sectional view of FIG. 1 (a), and FIG.
FIG. 2 (b) is a partial cross-sectional view, FIG. 2 (c) is a detailed view of a drive section in AA section in FIG. 2 (b), and FIG. 2 (d) is a clutch section in BB section in FIG. 2 (b). A detailed view is shown.

2 (a) and 2 (b), the main body 8
Is a hollow portion 8e for passing through the ring 22 of the lens 12 and the adapter 11, a wide-side restriction ring 18 and a tele-side restriction ring.
Fitting part for 19 to rotate around the center of the hollow part 8e
8f, a limiting portion 8g that prevents the wide-side limiting ring 18 and the tele-side limiting ring 19 from moving in the optical axis screen direction, and a segmented gear 27 in which a driving pin 16 described later is implanted rotates around the center of the hollow portion 8e. 8h, a restricting portion 8i that prevents the segment gear 27 described below from moving in the optical axis screen direction, a hole 8j penetrating the fixing portion 8a in a direction perpendicular to the mounting plane of the transceiver 3, and a hole 8j. A flange 8k protruding from the wall surface of the intermediate portion to the center of the hole 8j, a flat portion 8l for mounting a built-in component such as a driving unit, and a movement of the wide-side restriction ring 18 and the tele-side restriction ring 19 in the optical axis object direction are prevented. A limiting portion 8m, a limiting portion 8n for preventing movement of the segment gear 27 in the optical axis subject direction described later, a hole 8o for penetrating the cable portion of the input terminal 14, and a hole 8q for penetrating the output terminal 13. , Click knob support of the clutch part described later A hole 8p for penetrating the base 50, a wide-side restricting member 8r protruding from the inner peripheral surface of the restricting portion 8m for restricting clockwise circumferential rotation when viewed from the subject side of the wide-side restricting ring 18, and a tele side. And a tele-side restricting member 8s protruding from the inner peripheral surface of the restricting portion 8m for restricting the rotation of the restricting ring 19 in the counterclockwise circumferential direction as viewed from the subject side.

The wide-side restriction ring 18 is fitted to the fitting portion 8f, and a member 18a protruding in an arc shape in the direction of the optical axis subject and a fixing knob 20
Has a notch 18b provided on the inner peripheral surface below the screw hole for screwing the member, the member 18a is located in the counterclockwise direction of the wide-side restricting member 8r when viewed from the subject side, and the wide-side restricting ring 18 is When rotated clockwise as viewed from above, the member 18a and the wide-side restricting member 8r abut, and the rotation of the wide-side restricting ring 18 is restricted.

The tele-side restriction ring 19 is fitted to the fitting portion 8f, a member 19a protruding in an arc shape in the direction of the optical axis subject, and a notch 19b provided on an inner peripheral surface below a screw hole for screwing the fixing knob 21. Has a clearance groove 19c extending on the inner peripheral surface for penetrating the member 18a, the member 19a is located clockwise of the tele-side restriction member 8s when viewed from the subject side, and the tele-side restriction ring 19 is When rotated counterclockwise as viewed from above, the member 19a and the tele-side restriction member 8s come into contact with each other, and the rotation of the tele-side restriction ring 19 is restricted.

The fixed knobs 20 and 21 are each a wide-side restriction ring.
A flange portion 20 which is screwed vertically to the outer peripheral surface of the telescopic side restriction ring 19 and protrudes into the cutouts 18b and 19b to prevent falling off.
The wide-side restriction ring 18 and the tele-side restriction ring 19 are fixed by screwing the knobs 20 and 21 and press-fitting the fitting portion 8f. Segment gear 27 is fitted with 8h
Gear 27a fitted on the outer surface of a certain angle range,
A notch 27b in which the outer peripheral surface of the restricting portion 8i side of the main body 8 is cut in the circumferential direction while leaving a certain angular range around the drive pin 16;
A clockwise end face 27c of the drive pin 16 as viewed from the subject side caused by the notch 27b, and a counterclockwise end face 27d of the drive pin 16 as viewed from the pin side caused by the cutout 27b,
The cutout 27b does not contact the wide-side restricting member 8r, the tele-side restricting member 8s, the member 18a of the wide-side restricting member 18 and the member 19a of the tele-side restricting member 19 of the main body 8, and passes through the long hole 8d of the main body 8. End surface 27 without reaching the end surface on the limiting member 8n side so that the inside can not be seen
c is the member 18a when rotated clockwise viewed from the subject side
The end face 27d is in a position where it comes into contact with the member 19a when rotated counterclockwise as viewed from the subject side.

The ring 22 has a contact surface 22a that contacts the end surface 12a of the zoom ring 12c of the zoom lens 12 so as not to be inclined with respect to the plane perpendicular to the optical axis.
Having.

 The claw 23 is fixed to the outer peripheral surface of the ring 22 with a screw 24.

The rubber 25 is fixed to the inner peripheral surface of the ring 22 and the inner peripheral surface of the elastic member 28 described later, and the surface on the non-fixed side has an uneven surface having a protrusion extending in the optical axis direction to slide in the circumferential direction. Preventing.

The fixing knob 26 is screwed vertically from the outer peripheral surface of the ring 22 above a fixing portion of the rubber 25 of the elastic member 28 described later,
The contact surface 26a is crushed so as to increase the diameter in order to prevent detachment.

The elastic member 28 is an arcuate ring that comes into contact with the inner peripheral surface of the ring 22, and one end portion is fixed to the ring 22 by screws 29,
Rubber 25 is fixed to the inner peripheral surface near the upright end, and its outer peripheral surface is always in contact with the fixing knob 26 by elastic force.

The output terminal 13 has a fitting portion 13p having a smaller diameter than the outer shape and a connecting portion 13a connected to a drive circuit 31 described later at an intermediate portion, and the fitting portion 13p is fitted and fixed in a hole 8p of the main body 8. .

The input terminal 14 is a connection portion connected to a drive circuit 31 described later.
14a and fit into the hole 8o of the main body 8.

The input terminal fixing plate 29 is a Ω type having a semicircular portion having a diameter smaller than the outer diameter of the input terminal 14 at the center and flat portions at both ends. Is fixed to the flat portion 81 of the main body 8, the input terminal 14 is fixed.

The drive circuit 31 inputs a zoom ring drive signal and a gantry control signal from the input terminal 14 and outputs a gantry control signal to the output terminal 13. Further, it controls the drive of a motor 32 connected to a cable 32b of the motor 32 described later.

The motor 32 is disposed in parallel with the flat portion 81 of the main body 8 and has a worm gear 32a at the tip of the motor shaft.

The motor support plate 33 has an L-shape, and has a notch 33a in one flat portion for allowing the motor shaft to pass therethrough.
2 is fixed with a screw 34, and the other flat portion is fixed to a flat portion 37b of a drive gear fixing portion 37 described later with a screw 35.

The gear 36 has a worm wheel 36a that meshes with the worm gear 32a of the motor 32, a gear 36b (see FIG. 2 (c)), and is disposed perpendicular to the plane portion 81.

FIG. 2 (c) is a cross-sectional view of a cross section AA passing through the center of a gear shaft of a drive gear fixing portion 37 described later in FIG. 2 (b).
The drive gear fixing portion 37 includes a flat portion 37a that contacts the flat portion 81 of the main body 8, a flat portion 37b that is parallel to the flat portion 37a and fixes the motor support plate 33, and a flat portion 37a that fixes a clutch portion described later. A flat portion 37c parallel to the flat portion 37a for preventing axial movement of an idle gear 44 described later.
7d, a hole 37e provided in the flat portion 37a for fitting the shaft of the gear 36, and a flat portion 37b for fitting the shaft of the gear 36.
The shaft 37g provided vertically between the flat portion 37a and the flat portion 37c for fitting the hole 37f provided in the
A shaft 37h provided vertically from the flat portion 37a to the flat portion 37c for fitting the gear 42, and a shaft 37h provided vertically from the flat portion 37c for fitting the gear 43 to the flat portion 37a. Axis 37
A shaft 37i that is concentric with h and that prevents the gear 42 from moving in the axial direction by the stepped surface of the joint, and a shaft that is provided vertically between the flat portion 37a and the flat portion 37d for fitting the gear 44. 37j,
It has a shaft 37k provided vertically between the flat portion 37a and the flat portion 37b that support the flat portion 37a and the flat portion 37b in parallel, and the flat portion 37a is fixed to the flat portion 81 by screws 38. .

The gear 36 is a connecting shaft 36 between the worm wheel 36a and the gear 36b.
c is fitted into the hole 37f of the flat portion 37b, and the connecting shaft 36c of the gear 36b is fitted.
The small diameter shaft at the tip of the stepped shaft 36d on the opposite side to the hole in the flat portion 37a
The axial movement is prevented by the flat portion 37a and the flat portion 37b which are fitted into the gear 37e and in which the end face of the connection shaft 36c of the gear 37b is in contact with the stepped portion of the stepped shaft 36d.

The gear 39 has a contact surface that comes into contact with a gear 40 described later in the axial direction.
39a, and is fitted to a spring insertion shaft 40b of the gear 40 described later, and meshes with the gear 36b.

The gear 40 includes a gear, an abutting surface 40a that axially abuts the gear 39, a spring insertion shaft 40b into which the gear 39 is fitted, and a spring 41 to be described later, and a spring insertion shaft. A spring contact end portion 40c having a diameter larger than 49b, and a flat portion 37a of the gear 40;
The side end face and the end face on the flat face 37b side of the spring contact end 40c are flat faces.
The shaft 37g is prevented from moving in the axial direction by contacting the 37a and the flat portion 37b.
It is fitted in.

The spring 41 is connected to the end face of the gear 39 opposite to the contact face 39a and the gear 40.
Is inserted into the spring insertion shaft 40b between the spring contact end 40c and
The contact surface 39a is brought into pressure contact with the contact surface 40a of the gear 40.

The gear 42 has a cylindrical portion 42a on the opposite side of the flat portion 37a, and a concave groove 42b parallel to the end face of the cylindrical portion 42a and passing through the center of the cylindrical portion 42a.
And fitted into the shaft 37h to engage with the gear 40.

The gear 43 includes a rectangular parallelepiped convex portion 43b parallel to the plane portion 37a and passing through the center of rotation of the gear 43 in order from the plane portion 37a side, a gear, and a cylindrical portion 43a that comes into contact with an operation support arm 47a of a clutch lever plate 47 described later. And an abutting end 43c that abuts on an operating support arm 47a of a clutch lever plate 47, which will be described later, in the rotation axis direction of the gear 43.
And can be fitted in the shaft 37i and move in the axial direction. Further, the convex portion 43b can be fitted into the concave groove 42b of the gear 42.

The idle gear 44 meshes with the segment gear 27 and the gear 43, is fitted to the shaft 37i, and the flat portion 37a and the flat portion 37d prevent the idle gear 44 from moving in the rotation center axis direction.

FIG. 2B is a cross-sectional view of the clutch knob 17 in the rotation axis direction.
In FIG. 2 (d), which is a cross-sectional view taken along the line BB, the clutch lever fixing plate 45 has an L-shape, and one of the flat portions has the other flat portion perpendicular to the flat portion 37c and the front end of the flat portion has the right end. The flat portion 37 of the flat portion 37c is oriented so as to face the flat portion 37a.
A pin 45b is fixed to the surface on the side a by the piston 46, and the other flat portion has a vertically protruding pin 45b near the tip thereof. A circumferential groove 45 for locking an E-ring described later is provided near the tip of the pin 45b.
There is c.

Further, a support piece 45e of a torsion spring 48 described later, which is bent in the same direction as the pin 45b, is provided on the right end face of the other flat portion.

The clutch lever plate 47 has a hole fitted to the pin 45b at the center, and an operating support arm 47a extending from the center where the flat portion contacts the outer peripheral surface of the cylindrical portion 43a of the gear 43 at the flat portion.
And a support arm for locking a torsion spring 48 described later at a position 90 degrees clockwise from the operation support arm 47a when viewed from the tip end side of the pin 45b.
47b, and a clutch operation support arm 47 for transmitting the operation of the clutch knob 17 to a position 90 degrees clockwise from the support plate 47b.
and a pin 47c standing upright on the distal end side of the pin 45b at the distal end of the operation support arm 47d.

The torsion spring 48 has a spring hollow portion inserted into the pin 45b and is sandwiched between the pin 45b fixing surface of the clutch support plate 45 and the clutch lever plate 47, and one end of the support end 48b is bent toward the pin 45b side to the support arm 47b. Locked clutch lever plate 4
7 is urged counterclockwise, and the other support portion 48e is
Is locked.

The E-ring 49 is clipped by the groove 45c at the tip of the pin 45b to prevent the torsion spring 48 and the clutch lever plate 47 from moving in the direction of the pin 45b.

The clutch knob 17 has a spring insertion hole 17a and a rotation restricting groove 17e extending at a certain angle that does not interfere with the spring insertion hole 17a in a circumferential direction parallel to the center line at a certain distance from the center on the end face of the body 8 side, An upright shaft 17b is formed at the center of the end surface of the main body 8 side.
A disk portion 17d having a diameter larger than 7b is formed, and a surface of the disk 17d opposite to the shaft 17b has a clutch operating pin 17c which stands up a certain distance from the center of the surface.

The clutch knob support base 50 is an externally stepped cylinder,
The end of the large-diameter cylinder contacts the end of the clutch knob 17 on the body 8 side, and the end of the small-diameter side contacts the end of the disk 17d to prevent the clutch knob 17 from moving in the central axis direction and fit the shaft 17b. .

In addition, two click holes 50a smaller in diameter than the spring insertion hole 17a are formed at a certain angle on the large-diameter cylindrical end face at the same distance from the center as the distance between the center of the spring insertion hole 17a and the clutch knob 1
The pin 50e fitted into the rotation limiting groove 17e of the seventh is formed upright so as not to interfere with the click hole 50a.

Further, an L-shaped member 50b is formed on the outer peripheral surface of the small-diameter cylindrical side, and is fixed with screws 53 so that the central portion of the cylindrical portion and the flat portion 37a of the drive gear fixing portion 37 are parallel.

 The spring 51 is inserted into the spring insertion hole 17a.

The ball 52 is inserted into the spring insertion hole 17a so as to sandwich the spring 51, and the spring 51 constantly presses the large-diameter cylindrical end surface of the clutch knob support base 50.

Next, a method of mounting the zoom ring driving device of the present embodiment will be described.

The zoom ring driving device 5 is attached to the lower part of the transceiver 3.
At this time, the positioning pin of the main body 8 is inserted into the fitting hole 3b of the transceiver 3.
8b and fit the tripod screw 15a into the tripod screw hole 3a of the transceiver 3.
And fix it. At this time, it is attached to the front side of the still camera main body 1 so that the hollow portion 8e of the main body 8 and the center of the mount of the still camera main body 1 coincide.

Attach the adapter 11 to the lens 12. At this time, the adapter 11 is inserted from the bayonet side of the lens 12 with the claw 23 side of the adapter 11 first, and the end surface 12a of the zoom ring 12c of the lens 12 is inserted.
The fixing knob 26 is screwed while the contact surface 22a of the adapter 11 is in contact with the rubber member 25 and the rubber 25 fixed to the end of the elastic member 28 is pressed against the outer peripheral surface to fix the adapter 11 to the lens 12.
At this time, the zoom ring 12c and the index (not shown) of the adapter are made to coincide with each other so that the claw 23 comes to a predetermined angular position.

The gantry 4 is fixed to the lower surface of the fixed portion of the zoom ring driving device 5 by screwing the tripod screw 4c of the gantry 4 into the tripod screw hole 8c of the zoom ring driving device 5.

The input terminal 14 of the zoom ring driving device 5 is connected to the terminal of the transceiver 3
Connect to 3a.

The terminal 4a of the gantry 4 is connected to the output terminal 13 of the zoom ring driving device 5.

The clutch knob 17 of the zoom ring driving device 5 is rotated clockwise. At this time, the ball 52 of the clutch part is partially dropped into one of the clip holes 50a, and when the clutch knob 17 is rotated from this state, the ball 52
Needs torque to escape from clip hole 50a,
When the click position can be recognized and the clutch knob 17 is to be rotated clockwise, the pin 50e abuts on the cylindrical end of the rotation restricting groove 17e, and further clockwise rotation cannot be performed.

At this time, the clutch operating pin 17 of the clutch knob 17 is
c and the pin 47c of the clutch lever plate 47 abut against each other, and the clutch lever plate 47 rotates clockwise as viewed from the tip end of the pin 45b of the clutch lever fixing plate 45, and the operation support arm 47a
3 is separated from the gear 42, the connection between them is released, and the drive pin 16 implanted in the segment gear 27 meshing with the idle gear 44 meshing with the gear 43 can rotate in the circumferential direction without any load.

The lens 12 to which the adapter 11 is attached is attached to the still camera body 1 through the hollow portion 8e of the zoom ring driving device 5.
At this time, the notch of the claw 23 of the adapter 11 and the drive pin 16 are engaged.

The zoom ring 12c of the lens 12 is rotated clockwise as viewed from the object side, and the restriction is applied to the wide end side.

Rotate the wide side restriction ring 18 counterclockwise to
a and the end surface 27c of the segment gear 27 abuts, and with the drive pin 16 in contact with the counterclockwise end surface of the cutout of the claw 23, the fixing knob 20 is screwed into the fitting portion 8f of the main body 8 to restrict the wide side. Fix the ring 18.

The zoom ring 12c of the lens 12 is rotated counterclockwise when viewed from the subject side, and the tele end is restricted.

When the tele-side restriction ring 19 is rotated clockwise, the member 19a abuts against the end face 27d of the segment gear 27, and the drive pin 16
Knob fixed in contact with the clockwise end face of the notch
21 is screwed into the fitting portion 8f of the screw-in main body 8 to fix the tele-side restriction ring 19.

Turn the clutch knob 17 counterclockwise. On this occasion,
When the ball 52 of the zoom ring driving device 5 of the clutch part is partially dropped into the other click hole 50a, when the clutch knob 17 is rotated from this state, the ball
51 needs torque to escape from the click hole 50a, can recognize the click position, and when trying to rotate the clutch knob 17 counterclockwise, the pin 50e
It abuts the circumferential end of 7e and cannot rotate further counterclockwise.

At this time, the clutch operating pin 17 of the clutch knob 17 is
c and the pin 47c of the clutch lever plate 47 are disengaged, and the clutch lever plate 47 rotates counterclockwise by a counterclockwise bias when viewed from the tip side of the pin 45b of the clutch lever fixing plate 45 of the torsion spring 48 to operate. The support arm 47a presses the gear 43 and the gear 42 in pressure.

Next, still photography by remote monitoring using the zoom ring driving device of the present embodiment will be described.

While monitoring the monitor television 7, the gantry 4 is controlled by a control switch provided on the remote controller 6 to frame the subject. At this time, the control signal of the gantry 4 is transmitted through the path of the transceiver 3 → the terminal 3a → the input terminal 14 of the zoom ring driving device 5 → the drive circuit 31 → the output terminal 13 → the terminal 4a of the gantry 4.

Zooming is performed by controlling the remote controller 6. At this time, the zoom ring drive signal is transmitted from the transceiver 3 → the terminal 3a →
The driving signal is transmitted through the path from the input terminal 14 of the zoom ring driving device 5 to the driving circuit 31, and drives and controls the motor 32.

The rotation of the motor 32 is transmitted to the worm gear 32a, the worm wheel 36a, the gear 36b, and the gear 39, respectively.

The rotation of the gear 39 depends on the contact surface of the gear 39 urged by the spring 41.
The power is transmitted to the gear 40 by the frictional force between the 39a and the contact surface 40a of the gear 40, and is transmitted to the gear 42 meshing with the gear 40.

The gear 43 for urging the gear 42 by the operation support arm 47a of the clutch lever plate 47 is connected to the zoom ring 12c, and the rotation of the gear 42 cannot be transmitted due to the frictional force by the urging force, so that the gear 43 cannot rotate.

When the gear 42 rotates and the concave groove 42b becomes directly below the convex portion 43b of the gear 43, the convex portion 43b falls into the concave groove 42b due to the urging force, and the lock state is established, and the rotation of the gear 42 is transmitted to the gear 43. Is done. The rotation of the gear 43 is transmitted to the gear 44 and the segment gear 27, respectively, so that the drive pin 16 rotates in the circumferential direction, and the zoom ring of the lens 12 attached to the adapter 11 in conjunction with the claw 23 engaged therewith. 12c rotates and zooming is performed.

When the zooming operation is rotating to the wide side, the driving pin 16 is rotating clockwise when viewed from the subject side, and the claw 23 interlocked with the driving pin 16 rotates clockwise at the notch. The end face 27c of the segment gear 27 is opposite to the end face 27c of the segment gear 27 when the zoom ring driving device 5 is mounted. When the lens 18 comes into contact with the member 18a, the lens 12 is not in the limit, and the zoom ring 12c of the lens 12 does not generate torque greater than the torque required for rotation.

This is the same for the tele side. When the segment gear 27 reaches the limit as described above, the gear 39 and the gear
The slip mechanism constituted by the spring 40 and the spring 41 works to prevent a large torque corresponding to the motor starting torque from being transmitted to the segment gear 27.

The remote controller 6 controls the still camera to perform focusing. At this time, the focus adjustment ring drive signal is transmitted through the path of the transceiver 3 → terminal 3b → input terminal 2a of the finder head 2 → control circuit in the camera body (not shown) to drive and control the focusing motor (not shown).

Then, the rotation of the focusing motor is transmitted to the coupling shaft 12d, and further transmitted to the focus adjustment ring 12b via the gears 12d ₁ and 12b ₁ . As a result, the focusing ring 12b rotates about the optical axis, and focusing is performed.

The remote controller 6 sets the aperture and shutter speed of the still camera, and performs still shooting by release control.

As described above, according to the present embodiment, the following effects can be obtained.

In still photography by remote monitoring, zooming control becomes possible, so that a small number of photo opportunities can be greatly expanded. In order to realize this, if one zoom ring driving device 5 is provided, a plurality of rotary zoom lenses can be provided. However, since it can be used only by preparing the adapter 11, it can be realized at low cost.

Since the engagement between the driving pin 16 and the claw 23 allows displacement in the radial direction, the eccentricity when the adapter 11 is mounted on the lens 12 and the eccentricity with the mount center when the zoom ring driving device 5 is mounted on the still camera are determined. Can be completely absorbed.

The adapter 11 can also be used for a lens having a relatively close outer diameter of the zoom ring by allowing the eccentricity.

Since the rotation of the drive pin 16 is restricted in the zoom ring driving device 5, it does not hinder the limitation of the attached lens, and is extremely effective in preventing the circumferential displacement between the adapter 11 and the zoom ring 12c. It is.

Since the wide-side restricting member 18 and the tele-side restricting member 19 are variable, when the intended use range is determined in advance without fully using the wide-telephoto as in the present embodiment,
The wide-side limiting member 18 and the tele-side limiting member 19 are set in that range, and can be used as a zoom range limiting member.

When performing still shooting by remote monitoring using a single focus lens after performing still shooting using remote monitoring using a rotary zoom lens, it is OK to attach the lens if it does not hinder mounting, or remove it easily if there is a problem. Can be.

In the present embodiment, the camera side and the monitor television and the remote controller side are connected by cable. However, it is needless to say that the monitor of the photographed image and the photographing control may be performed by a wireless method. Is intended for shooting by remote monitoring using a still camera, but it goes without saying that the present invention can also be applied to shooting by remote monitoring using a video still camera.

As the imaging by remote monitoring using such a zoom ring driving device of the present embodiment, it is possible to use an extremely wide and effective use, such as imaging of animals and the like, imaging of stars, imaging of natural phenomena such as volcanic activity, and the like. Is what you do.

(Effects of the Invention) According to the present invention, a drive mechanism (32, 36, 36b, 39, 40, 42, 42) driven based on a zoom ring drive signal and a signal input signal (31) for inputting a zoom ring drive signal is provided. 43, 44, 27); a zoom ring driving means (5); a driving force of a driving mechanism is transmitted, the zoom ring driving means (5) is rotatable around an optical axis, and the zoom is transmitted to the zoom ring (12c). An exchange adapter (11) engageable with the ring; and a second transmission means (16, 23) for transmitting the driving force of the drive mechanism to the exchange adapter;
When the zoom ring drive signal is output from the remote control means (3, 6), the zoom ring (12c) is rotated from the zoom ring drive means (5) via the second transmission means (16, 23). In the still photography by remote monitoring, the zooming control becomes possible, so that a small number of shutter chances can be greatly increased, and the zoom ring driving device (5) ) Can be used simply by preparing an adapter (11) for a plurality of rotary zoom lenses, so that it can be realized at low cost.

[Brief description of the drawings]

FIG. 1 is an external view of the present embodiment, and FIG.
1 is a right side view, FIG. 1 (b) is a front view, and FIG. 1 (c) is a left side view. FIG. 2 shows the internal structure of the present embodiment. FIG. 2 (a) is a partial sectional view in FIG. 1 (a), and FIG. 2 (b) is a partial sectional view in FIG. 1 (b). FIG. 2 (c) is a detailed view of the drive section in the section AA in FIG. 2 (b), and FIG. 2 (d) is a view in FIG. 2 (b).
The clutch part detailed view of the BB cross section is shown, respectively. Third
The figure shows a system configuration diagram of remote monitoring still photography using the zoom ring driving device in the present embodiment. (Explanation of reference numerals of main parts) 1 ... Camera body, 3 ... Transceiver 5 ... Zoom ring drive 6 ... Remote controller 11 ... Adapter, 12 ... Lens 16 ... Drive pin, 23 ... Claw

Claims (2)

(57) [Claims] 1. A camera system which can be remotely operated, comprising: a camera body; a focus adjustment ring which can be mounted on the camera body and is rotatable around an optical axis for performing focus adjustment; An interchangeable lens having a zoom ring rotatable around an optical axis; and a first lens for converting focus adjustment information obtained on the camera body side into a driving force, and transmitting the driving force to the focus adjusting ring. A transmission unit; a focus adjustment ring drive signal for rotating the focus adjustment ring, a zoom ring drive signal for rotating the zoom ring, and a focus ring drive signal for rotating the focus adjustment ring. Remote-control means for respectively outputting a zoom-ring drive signal; and zoom-ring drive means having a drive mechanism driven based on the zoom-tube drive signal; An exchange adapter that is rotatable about an optical axis by transmitting a driving force of the driving mechanism and is engageable with the zoom ring so as to transmit the rotation to the zoom ring; and exchanging the driving force of the driving mechanism. A second transmission unit for transmitting to the adapter, wherein when the focus adjustment ring drive signal is output from the remote control unit, the camera main body is connected via the first transmission unit based on the focus adjustment information. The focus adjustment is performed by rotating the focus adjustment ring, and when the zoom ring drive signal is output from the remote control unit, the zoom ring drive unit transmits the zoom ring drive signal via the second transmission unit. A remotely operable camera system, wherein the zooming is performed by rotating the zoom ring. 2. A zoom ring driving device capable of remotely controlling a zoom ring rotatable around an optical axis for performing zooming, wherein a zoom ring driving signal for rotating said zoom ring is input. Zoom ring driving means having a signal input means and a driving mechanism driven based on the zoom ring driving signal; a driving force of the driving mechanism being transmitted, the zoom ring driving means being rotatable about an optical axis; An exchange adapter engageable with the zoom ring for transmission to the ring; and a transmission unit for transmitting the driving force of the drive mechanism to the exchange adapter. A zoom ring driving device capable of remote control, wherein the zooming is performed by rotating the zoom ring from the ring driving means via the transmission means.