KR100233790B1 - Operating device of zoom lens system for a camera - Google Patents

Abstract

A zoom lens system driving apparatus for a camera, the zoom lens system driving apparatus comprising: (a) a zoom lens system; (b) a reversible motor operable to move the lens system along the optical axis in the forward and reverse directions between the spaced apart wide-angle and telephoto end positions to determine the focal length of the zoom lens system; (c) means for determining the direction of movement of the lens system as it moves to any one of the terminus positions; And (d) separate first and second control means responsive to said discriminating means for driving the motor, wherein movement of the lens system from the initial position to the wide angle minus position is effected by said first control means. And the movement of the lens system to the telephoto end position is executed by the second control means, wherein the first control means and the second control means drive the zoom lens system to the wide angle and telephoto end positions, respectively. The present invention relates to a zoom lens system driving apparatus comprising a WIDE subroutine and a TELE subroutine, respectively.

Description

[Name of invention]

Zoom lens system driving device for camera

[Brief Description of Drawings]

1 is a schematic block diagram of a first embodiment of the present invention.

2 is a schematic block diagram of a second embodiment of the present invention.

3 is a schematic block diagram of a third embodiment of the present invention.

4 is a schematic block diagram of a fourth embodiment of the present invention.

5 is a schematic perspective view of an inter-lens shutter camera with a zoom lens according to the present invention.

FIG. 6 is a front elevational view of the barrel block of FIG. 5 showing a light emitter and receiver, a macro compensation optical element incorporated with a distance measuring device, and a zoom motor.

7 is a plan view of the apparatus of FIG. 6;

8 and 9 are cross-sectional views taken along the lines VIII-VIII and IX-IX in FIG.

10 is a longitudinal sectional view of the barrel block of the first embodiment;

11 is an exploded view of the cam groove of the cam ring for the front and rear lens element group associated with the barrel block of FIG.

12 is an exploded perspective view of the barrel block shown in FIG.

13 and 14 are cross-sectional views of the light barrier mechanism associated with the barrel block of FIG. 10, which are cut along a plane perpendicular to the optical axis of the block and show the barrier at the open and closed positions, respectively.

15 is a schematic diagram of the distance measuring device according to the present invention.

16 is a schematic diagram of an optical device for focus adjustment in the macro operating mode of the present invention.

FIG. 17 is an enlarged view of a portion of FIG. 16.

FIG. 18 is a detailed front elevation view of FIG.

19 is a plan view of the cam plate of the finder block mounted on the mother plate.

FIG. 20 is a cross-sectional view taken along the line XX-XX of FIG. 19. FIG.

21 is a rear view of FIG.

FIG. 22 is a plan view of FIG. 19 with the mother plate and the cam plate removed.

FIG. 23 is a cross-sectional view taken along the line XXIII-XXIII of FIG. 19. FIG.

FIG. 24 is a cross-sectional view taken along the line XXIV-XXIV of FIG. 23 showing the deflection prism operating plate.

FIG. 25 is a sectional view similar to FIG. 24 showing the operation plate at different operating positions.

FIG. 26 is a sectional view similar to FIG. 24 without a deflection prism operating plate.

FIG. 27 is a front elevational view of the apparatus shown in FIG. 23 showing a deflection prism aligned with a viewfinder.

FIG. 28 is a cross-sectional view taken along the line XXVIII-XXVIII of FIG. 27. FIG.

Fig. 29 is a developed view of a code plate showing a land, and shows a developed view of a cam groove for explaining the functional relationship therebetween.

FIG. 30 shows a zoom code carried by the code plate shown in FIG. 29, and is a chart showing possible starting and stopping positions.

31, 32 and 33 are front elevation, rear elevation and top view of the camera of the present invention showing the operation switch.

34 and 35 are cross-sectional views of the macro button shown in the operation position different from the mode change switch.

36 is a block diagram of a control device of the present invention.

37 is a driving circuit of a zoom motor.

38-41 are flowcharts of a first embodiment of the present invention.

42 is a top view of a zoom switch in a modified arrangement.

FIG. 43 is a diagram showing a zoom code and a stop position by the code plate shown in FIG. 29; FIG.

44-46 are flow charts of a second embodiment of the present invention.

FIG. 47 is a diagram showing a zoom code and a stop position by the code plate shown in FIG. 29; FIG.

48 and 49 are flowcharts of a third embodiment of the present invention.

FIG. 50 is a diagram showing the stop position of the zoom code by the code plate shown in FIG. 29; FIG.

51 and 52 are flowcharts of a fourth embodiment of the present invention.

Detailed description of the invention

[Technical Field]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a zoom lens system driving apparatus for a lens shutter type camera having a finder optical system compatible with a lens and an electronic display device. In particular, the present invention relates to, but is not necessarily limited to, a zoom lens driving system for a camera having a shutter positioned between the lens, that is, between-the-lens shutters.

The present application relates to an invention (lens shutter-type camera including a zoom lens), which is filed under the same and under the co-assigned invention (Application No. 144,030), the description of which is expressly incorporated by reference.

[Background]

Most conventional and autofocus cameras with lens shutters such as inter-lens shutters have a fixed focal length. Some of these types of cameras allow the user to select one or the other of two separate lenses of different focal lengths, for example providing wide angle and telephoto capabilities. However, in such a camera, stepless variations in focal length are not possible within these two extreme focal length ranges. Therefore, only single-lens reflex cameras using a focal plane shutter have the ability to take pictures using zoom lenses.

Single-lens reflex cameras are more expensive and heavier than inter-lens shutter cameras; Thus, photographers unfamiliar with the camera usually do not find it easy or convenient to use single-lens reflex cameras, especially photographing highway activity using flash lighting. Moreover, because of its relatively large weight and size, single-lens reflex cameras do not favor it because of the number and weight of bags that must be carried by hand. As a result, these individuals are hesitant to use single-lens reflex cameras, even if they can take higher quality pictures. Thus, a user hesitant to use a work reflex camera has only two choices in a lightweight, compact inter-lens shutter automatic camera: one with a fixed focal length and two extreme focal lengths without adjustment between them. .

It is therefore an object of the present invention to provide a new and improved compact, lightweight and compact camera having a lens shutter such as an inter-lens shutter and having a zoom lens in which focusing control and electronic flash control are automatically performed.

Another object of the present invention is to have a lens shutter, such as an inter-lens shutter, an additional macro function capable of taking extremely large and detailed images, and a finder optical system and an electronic flash device related to the macro function are used in normal modes (for example, wide angle, telephoto and standard). It is to provide a zoom lens autofocus camera that operates in a similar manner to the operation method in the).

It is another object of the present invention to provide a zoom lens driving system for a lens shutter type compact camera having a zoom lens in which power zoom operation is electrically and automatically executed.

[Initiation of invention]

A zoom lens for a camera having an inter-lens shutter includes a motor for moving the lens back and forth along the optical axis.

A first embodiment of the present invention provides a switch means operable by an operator for controlling the operation of a motor for moving a lens from an initial position on an axis to a final stop position which determines the focal length of the lens, and a final position at the initial position The movement of the lens to includes control means for operating the motor so that it always ends after the lens has moved to the final position in a predetermined direction.

The lens occupies either position between the wide-angle termus setting the smallest focal length and the telephoto termus setting the largest focal length, and may also include a macro position above the telephoto end position. The present invention confirms that regardless of the initial position of the lens relative to the final position of the lens, the lens will always be moving in the predetermined direction until the lens reaches the final position and stops.

In order to reach the final position, the lens must move in the opposite direction to the predetermined direction. In this case, instead of stopping the lens when the final position is first reached, the present invention allows the lens to continue to move beyond the final position or overshoot before the lens stops moving. All backlash in the drive system will then be considered by reversing the direction of movement of the lens to provide the lens to return in a predetermined direction relative to its final position. This arrangement will position the lens correctly at the final position, regardless of the initial position of the lens relative to the final position.

The second embodiment of the present invention includes switch means having two settings operable by the operator to control the operation of the motor for moving the lens from the initial position on the axis to the final stop position setting the focal length of the lens.

In addition, the present embodiment includes: position detector (detector) means for detecting the lens position on the axis in response to the lens position; And in response to the operation of the switch means of either the position detector means or the second setting, (1) the final position of the lens being a predetermined number of discrete focal length steps from its initial position, and (2) the final position Control means for operating the motor so that the movement of the lens to the furnace always occurs while the lens is moving in the predetermined direction.

The position of the lens when the switch means is operated by the operator defines the initial position of the lens. By operating the switch means in any of the settings, the control means moves the lens from its original position along the predetermined direction to the final position located at the predetermined number of focal length steps. By operating the switch means to another of the settings, the control means first moves the lens in a direction opposite to the predetermined direction until it is positioned beyond the predetermined number of focal length steps, and then reverses the movement of the lens so that the lens It moves from the original position in the predetermined direction until the predetermined position of the focal length step is reached.

The third embodiment of the present invention is directed to the operator to control the operation of the motor to move the lens from the initial position on the axis determined by the position of the lens when the switch is operated to the final stop position setting the focal length of the lens. And switch means having two settings operable by means of the switch. The present embodiment also includes position detector means for detecting the lens position on the axis in response to the lens position and delay means for introducing a predetermined pause in operation of the motor. Finally, in this embodiment, the switch means corresponds to a series of operating positions (one of the two settings) detector means and delay means; (1) the final position of the lens is a predetermined number of discrete focal length steps from its initial position; (2) the movement of the lens to its final position always occurs while the lens is moving in the predetermined direction; And (3) control means for operating the motor so that the lens stays in the final position for the predetermined pause before the lens moves from the final position to another position located by the predetermined number of discrete steps. Accordingly, according to a series of operations of the switch means in any one of the settings, the control means repeatedly moves the lens through a predetermined number of focal length steps, and causes a pause for a predetermined period between movements.

A fourth embodiment of the present invention is a plurality of selectable by the operator for controlling the operation of the motor to move the lens from the initial position determined by the position of the lens to the final stop position setting the focal length of the lens when the setting is selected. Switch means having a setting of.

The present embodiment also includes position detector means for detecting the position of the lens on the axis in response to the position of the lens, and storage means for storing data indicating the position of the lens on the axis. Finally, the present embodiment includes a control means corresponding to the selection of the setting of the switch means, the position detector means, and the memory means, wherein the motor is operated by the switch means to select the zoom setting. It is for operating the motor to drive from its initial position to the final position determined by the contents of the storage means, which is a condition in which the movement of the lens to the final position occurs while the lens is always moving in a predetermined direction. Takes place under

According to a first aspect of the invention, there is provided an apparatus for driving a zoom lens system in a lens shutter type camera which is moved in an optical axis direction by a drive source to vary a focal length, comprising: means for driving the drive source during a zoom operation; Means for reversing the direction of movement of the zoom lens system only when the zoom lens moves in a predetermined one direction and when the zoom operation ends; And means for reversing the operation of the drive source and then stopping the operation of the drive source.

According to another aspect of the present invention, a zoom lens system driving apparatus of a lens shutter type camera in which a zoom lens system is moved in an optical axis direction by a driving source to vary a focal length, the means for driving the driving source during a zoom operation, the position of the zoom lens system Means for detecting the optical lens in the optical axis direction, means for detecting the movement of the zoom lens system by a predetermined displacement in response to a detection signal of the detection means while the driving source is operating, and the detecting means detecting the movement of the zoom lens system by the predetermined displacement. A device is provided which comprises means for stopping the drive source operation when the device is stopped.

According to still another aspect of the present invention, there is provided a lens shutter-type camera zoom lens system driving apparatus in which a zoom lens system is moved in an optical axis direction by a driving source to change a focal length, comprising: means for driving a driving source during a zoom operation, a zoom lens in an optical axis direction Means for detecting the position of the system, means for detecting the movement of the zoom lens system by a predetermined displacement in response to a detection signal of the detection means during operation of a drive source, wherein the detecting means detects the movement of the zoom lens system by the predetermined displacement. Means for stopping operation of the drive source, means for determining whether another (additional) movement of the zoom lens system is required, and means for moving the zoom lens system by a predetermined displacement when the determining means determines another movement of the zoom lens system. Provided is an apparatus comprising a.

According to another feature of the invention there is at least two operating modes including a zoom mode in which the zoom lens system is moved within a predetermined zoom range and a specific mode in which the zoom lens system is moved out of the zoom range, wherein the zoom lens system has a focal length. An apparatus for driving a zoom lens system of a lens shutter-type camera which is moved in an optical axis direction by a driving source so as to fluctuate, the first means for driving the driving source during a zoom operation, means for detecting the position of the zoom lens system in the optical axis direction, Means for moving the zoom lens system to selectively occupy the zoom mode and the specific mode, means for storing position data detected by the detection means, and stored when a change in the operation mode from the specific mode to the zoom mode occurs A second means for driving the zoom lens system to a position represented by the position data. The apparatus characterized in that it is provided. Embodiments of the invention are shown in the accompanying drawings.

Best Mode for Implementing the Invention

Basic Structure of Inter-lens Shutter-type Cameras (See FIGS. 5 to 29)

A camera having an inter-lens shutter according to the invention has a barrel block (1) defining an optical axis (OA), a finder block comprising a finder and strobe block (2), a distance comprising a light emitter (3) and a light receiver (4). Measuring device AF, and a zoom motor 5 for performing a zoom operation. These elements are fixed in the manner described below on the base 6 which is firmly attached to the camera housing.

As shown in Figs. 6 to 10, the base 6 includes a barrel support plate portion 6a lying in a plane perpendicular to the optical axis OA, and a flange support plate portion extending to one side of the plate portion 6a at a right angle. 6b) and a motor support plate portion 6c perpendicular to the plate portion 6b. The barrel block 1 is supported on the barrel support plate portion 6a, and the zoom motor 5 is fixed to the motor support plate portion 6c located on the center of the barrel block 1. The light emitter 3 and the light receiver 4 fixed to the supporting plate part 6b are located on the opposite side of the zoom motor 5. The finder block 2 is fixed to the right side of the support plate portion 6b when viewed from the front of the camera. The gear transition plate 6e parallel to the support plate 6c is connected by the spacer 6f.

The barrel block 1 actuated by the zoom motor 5 is mounted on the base 6 as described below with reference to FIGS. 10 to 13. The rear fixing plate 11 of the block 1 is attached to the barrel support plate portion 6a of the substrate 6 by a fixing screw 10. The rear fixing plate has four guide rods 12 fixed around and parallel to the optical axis. The front fixing plate 13 is attached to the front end of the guide rod 12.

The rotatable cam ring 14 is mounted between the front and rear fixing plates 13 and 11 and provided with a gear 15 fixed on its outer side by a set screw 15a (Fig. 10). The pinion 7 (FIG. 8) on the output shaft of the motor engages with the gear 15, which is a sector gear of a size covering a predetermined range of the rotational movement of the cam ring 14 directly or indirectly through the gear train. The cam ring has zoom cam grooves 20 and 21 for setting the relative positions of the front and rear lens element groups.

11 is an exploded view of the zoom cam grooves 20 and 21.

The cam groove 21 for the rear lens element group includes a wide-angle termination fixing portion 21a, a variable magnification portion 21b, and a telephoto termination fixing portion 21c. The cam groove 20 for the front lens element group includes a part 20a for the opening / closing barrier block 30 (Fig. 12), a lens withdrawal (retraction) portion 20b, a wide-angled terminal fixing portion 20c, and a variable magnification portion ( 20d), the telescopic termination fixing unit 20e, the macro transfer unit 20f, and the macroterminal fixing unit 20g. The rotational displacement of the front lens group through the angle θ ₁ occurs when the portions 20a, 20b, 20c of the zoom cam groove 20 are used. This angle is equal to the angle θ ₁ of the rear lens group using the portion 21a of the zoom cam groove 21. The angle θ ₂ of the variable magnification portion of the groove 20 is equal to the angle θ ₂ of the variable magnification portion 21b of the groove 21. Furthermore, the angle θ ₃ comprising the portions 20e, 20f, 20g of the groove 20 is equal to the angle θ ₃ of the portion 21c of the groove 21. In the illustrated embodiment, the zoom range is 35mm to 70mm.

The cam follower roller 17 of the front group frame 16 is operatively coupled to the cam groove 20, and the cam follower roller 19 of the rear group frame 18 is operatively coupled to the cam groove 21. do. The front group frame 16 and the rear group frame 18 are mounted on the guide rod 12 for sliding shaft movement parallel to the optical axis. The decorative frame 22 and the shutter block 23 (FIG. 10) are fixed to the front group frame by the setting screw 22a.

The shutter block 23 for controlling focusing and exposure is operatively coupled to the front lens frame 24 supporting the front lens element group L ₁ by the helicoid 25. The front lens frame 24 includes an arm 24a coupled with the lens focusing lever 23a of the shutter block 23. When the lever 23a rotates cyclically, the helicoid 25 transfers rotation to the front lens frame 24 associated with the frame 22 and the block 23 so that the front lens focuses. Move along the optical axis. The rear lens element group L ₂ is directly fixed to the rear group frame 18. The shutter block 23 itself is known. This block rotates the lens focusing lever 23a through a predetermined angular displacement in accordance with a detection signal from a distance measuring device described later. The rotation of the lever 23a is performed by a pulse motor (not shown) built in the camera body to close the sector by returning the lever 23a to the initial position after opening the sector of the shutter 23b for a predetermined time.

Shutter blocks of this kind have been disclosed, for example, in Japanese Patent Laid-Open No. 60-235126. Such a conventional shutter block is essentially used in the present invention.

The barrier mechanism 30 (shown in detail in FIGS. 13 and 14) comprises a pair of square walls 31, which pivotally pivot on the pivot pin 32 in front of the front lens element group L ₁ . Is mounted. These barriers, located symmetrically in relation to the axis OA, control the passage of light through the imaging aperture 22b in the frame 22. Movement of these barriers is carried out by the rotational force generated when the roller 17 is engaged with the portion 20b of the groove 20. Each of the square walls 31 has a barrier plate portion 31a protruding at both ends of the optical axis OA and located on one side of the pivot pin 32 and a movable arm portion 31b on the opposite side of the pivot pin 32. . Each drive arm portion 31b has a pin 33, which is coupled with each working arm 34a of the spring 34, which arm can be made of, for example, a molded synthetic resin. Each spring 34 generally has a Y-shaped spring arm 34b, a drive arm 34c, and an actuating arm 34a and is pivoted to the barrier mechanism 30 by a pin 35. The spring arm 34b bears against the inner wall of the front group lens support frame 22 and continuously biases the barrier plate portion 31a to a position where the barrier plate portion 31a is retracted to block the relationship with the optical axis OA. . The drive arm 34c is coupled by the spring arm 34b and the flange portion 36a of the pin 36 mounted on the front group lens support frame for the radial movement about the axis OA. The head portion of the pin 36 is supported by the free end of the actuating lever 38 which protrudes through the actuating hole 39 in the support frame 22 as shown in FIGS. 12 to 14, and the pin 37 Is pivoted on the front fixing plate 13. The spring 34 normally biases the pin 36 radially outward from the optical axis to the radially protruding position when the actuating lever 38 does not exert an external force on the pin 36. In this state, the barrier plate part 31a is retracted out of the blocking position of the optical path (FIG. 13).

A limiting protrusion 40 (FIG. 12) is formed on the inner wall of the cam ring 14, and the limiting protrusion bears against the outer end of the actuating lever 38 so that the pin 36 is radially inward when the cam ring 14 rotates. ), While the roller 17 is coupled to the portion 20a of the cam groove 20. By the arrangement of the barrier mechanism described above, the barrier 31 unblocks the photographing opening 22b whenever the protrusion 40 is not engaged with the lever 38.

That is, the barrier 31 is opened when the cam ring 14 causes the roller 17 to engage with a portion other than the opening and closing portion 20a of the zoom cam groove 20.

When the zoom motor 5 rotates the cam ring 14 so that the roller 17 moves from engagement with the portion 20b that is engaged with the portion 20a of the groove 20, the barrier plate portion 31a of the barrier is By the drive arm 34c and the actuating arm 34a, the protrusion 40 displaces the pin 36 radially and rotates the barrier 31 until it moves to the containment portion associated with the optical parts of the lens system. Engage the lever 38. As a result, the photographing opening 22b is closed to protect the front lens element group L ₁ . In other words, the front group lens support frame 22 is closed after the group moves from its wide angle position to its retracted position. The zoom motor 5 drives the cam ring 14 in the forward direction when taking a picture. The roller 17 is moved from the portion 20a toward the portion 20b which is coupled to the cam groove 20 to open the barrier 31 when moving to the wide angle position when the front lens element group L ₁ is photographed. do.

15 to 18 show a distance measuring device that can be used in the present invention.

In the illustrated embodiment the distance measuring device AF comprises a light emitter 3 and a light receiver 4 in the form of a position detection element PSD, wherein the light receiver and the light emitter are arranged in a triangular form of the measurement system. .

As shown in FIG. 15, the light emitter 3 is composed of a light source 3a and a light emitting lens 3b such as a light emitting diode (LED). The light receiver 4 is composed of the PSD 4a and the light receiving lens 4b spaced apart from the light source 3a by the base length L. The PSD 4a has a single elongated light receiving element having a common terminal (cathode) C and two terminals (anode) A and B having a polarity different from that of the common terminal C as known. .

In the operation of the distance measuring device, light emitted from the light source 3a and focused by the lens 3b is reflected from the object 0 for imaging. The light reflected from the object is received by the PSD 4a and is on the light receiving surface of the PSD 4a at a position that is functionally proportional to the distance of the object from the light source generating a current related to the position of the reflected light on the PSD. The light is focused by the light receiving lens 4b. Therefore, the object distance can be detected by measuring this current and for this purpose, a known triangulation method is used.

In response to the measurement data thus obtained, an operation signal is supplied to the shutter device 23 (FIG. 10) to perform auto focus adjustment in any of the possible zoom ranges. This operation is performed by applying a drive pulse to a pulse motor (not shown) in the shutter device 23 according to the measurement data.

In response, the lens operating lever 23a of the shutter device 23 rotates by the angle corresponding to the number of pulses, thereby rotating the front lens frame 24 by the same angle. As a result of the rotation of the front lens frame 24 in relation to the cam ring 14, the front lens element L ₁ is moved by the helicoid 25 in the optical axis direction, so that focusing is automatically performed.

An AF device other than the triangle type may be used in the present invention. Preferably, the distance between the light emitter 3 and the light receiver 4 is as large as possible since the accuracy of the measurement in triangulation generally depends on the base length. Therefore, in the present invention, by placing the zoom motor 5 between the light emitter 3 and the light receiver 4, the base length is made as large as possible. Positioning the zoom motor 5 between the light emitter 3 and the light receiver 4 not only increases the base length L, but also enables the realization of a compact compact camera body. The zoom motor 5 is fixed to the motor support plate 6c (FIG. 9) integrally with the base plate 6, and the plate 6c is formed by bending the base plate 6 out of its plane.

As shown in FIG. 11, the cam groove 20 in the cam ring 14 includes a zoom cam groove 20f which serves as a macro conveying function, because this groove is a front lens from its “telephoto” terminus. This is because it causes another forward movement of the device group L ₁ . In this state, that is, at the macro position, the light reflected from the object in this closed range is not incident on the PSD 4a in response to the operation of the ranging device, and the object distance is not measured. Therefore, an operation signal is not generated to be applied to the shutter device 23, and exposure cannot be made. In the illustrated embodiment the detector spheres of FIGS. 16-18 are provided to measure the object distance at the macro terminus.

The macro compensation optical element 4e consisting of two total reflection surfaces 4h and a prism 4c with a mask 4d in FIGS. 16 to 18 is located in front of the light receiver 4 but only in macro setting. do.

In all other settings the element 4e is out of alignment with the light receiver 4. The prism 4c optically extends the base length of the object distance measuring device and refracts the light beam. The mask 4d is designed to allow only light rays from the photographed object. For this purpose, the mask 4d has an opening 4f facing the object and an opening 4g adjacent to the light receiving lens 4b, the opening having a distance l on the side of the optical axis opposite to the light emitting lens 3b. A slit is formed away from the optical axis of the light receiving lens 4b. The opening 4g is also slit on the optical axis of the light receiving lens 4b.

The reflective surface 4h of the spaced prism 4c by this arrangement performed only in macrosetting is displaced such that the optical axis of the light receiving lens 4b of the distance measuring device is parallel to the base length L by the distance l. The optical axis of the light receiving lens 4b intersects with the optical axis of the light emitting lens 3b at a limited distance. According to the present invention, not only the distance measuring light is refracted but also the optical axis of the light receiving lens is moved in parallel by the distance L toward the base length L, so that the base length is optically extended to (L + L). Therefore, the deviation of the spot image on the PSD 4a may increase in proportion to the change of the object distance. Therefore, the object distance can be detected with high accuracy by appropriately selecting the angle δ1 and the refractive index of the prism 4c. Thus, when the lens is positioned at its macro setting, the shutter device 23 is operated in accordance with the measurement data, and focusing is performed accurately and automatically.

The macro compensation optical element 4e is fixed to one end of the arm 42 (Fig. 6) pivoted on the base plate 6 by a shaft 41 located below the light receiver 4. An arm 42 is provided at its opposite end with an integral protrusion 43 bearing against the cam ring 14. The flexible arm 42 is typically held in a straight, non-flexible position when no external force is applied to it and is elastically deformable by the application of the external force. The macro compensation element 4e is biased by the tension spring 46 so as to be capable of continuous rotation at a retracted position which does not coincide with the optical axis of the light receiver 4. The projection 44 on the cam ring 14 moves in engagement with the projection 43 when the cam ring is rotated to its macrosetting position. This coupling causes the arm 42 to pivot against the bias of the spring 46, thereby moving the macro compensation optical element 4e into the front of the light receiver 4.

A projection 44 for operatively positioning the macro compensation optical element 4e associated with the light receiver 4 is located on the ring 14, and the macro compensation optical element 4e is an optical axis of the light receiver 4 It is formed to rotate slightly past the position aligned with. The extreme end of the rotational movement of the element 4e by the projections 44 is limited by the side of the gear support plate 6e integral with the base 6. In this case, the over-rotational movement of the element 4e by the projections 44 is absorbed by the elastic deflection of the arm 42. By the above arrangement, the macro compensation optical element 4e is automatically moved to the front surface of the light receiver 4 when the cam ring 14 is moved to the macro mode setting. The operation signal of the distance measuring device AF is supplied to the shutter block 23 through a flexible printed circuit board (FPC board) (not shown). The FPC plate is curved around the inside of the cam ring 14 so that the FPC plate extends freely and fits within the full range of displacement of the front lens element group L ₁ and the rear lens element group L ₂ . Will be folded.

The finder block 2 includes a finder device 8 and a strobe device 9. The finder device and the strobe device are assembled and arranged so that the field of view of the finder device and the irradiation angle (strength) of the strobe are varied depending on the focal length of the barrel block 1. The power supply of the zoom motor 5 also powers the finder and strobe control.

The gear 15 on the cam ring 14 is engaged by a pinion 50 other than the pinion 7 mounted on the motor shaft 5a. The shaft 51 carrying the pinion 50 extends towards the rear of the base 6 and is provided at its rear end with a reduction gear train 52. The gear 52a of the train 52 meshes with the rack 53a of the cam plate 53. The cam plate is slidable in the right and left directions (lateral directions) as shown in FIG. 19, and has a downward bending portion 53b at its rear end. The rack 53a is formed on the lower end of the bent portion 53b of the cam plate 53. The reduction gear train 52 reduces the rotation of the gear 15 to control the variable magnification cam groove for controlling the finder device 8, the parallel calibration cam groove 56, and the strobe cam groove 57 for controlling the strobe device 9. 55) is provided.

The lens system of the finder device 8 consists of an objective lens group L ₃ , an eye-piece group L ₄ , a movable variable magnification lens group L ₅ , and a deflection prism P ₁ used during macro mode operation. It is composed.

The variable magnification lens group L ₅ changes the image picture size in accordance with the variable magnification operation of the barrel block 1 to coincide with the field of view of the finder device 8. The deflection prism P ₁ moves to the optical path of the lens system of the finder device only in the macro mode of operation to compensate for parallax. Parallax is essential in cameras with inter-lens shutters, and the smaller the distance between the subject and the camera, the more important it is. Therefore, the large parallax error is normally related to the macro operation mode of the camera. In order to solve the problem of large parallax in the macro mode, a deflection prism P ₁ is provided in the present invention. Prism P ₁ is in the form of a wedge with a thicker bottom and a thinner top. The deflection prism P ₁ deflects the beam downwards towards an object close to the camera when positioned in the light path of the finder system. FIG. 26 shows the optical path direction of light rays passing through the finder lens when the deflection prism P ₁ is positioned on the optical axis of the finder lens.

The strobe device 9 controls the irradiation angle as a function of the focal length of the photographing lens. In other words, when the focal length is large, the irradiation angle increases when the lens moves forward. When the camera is operated in macro mode the irradiation angle is further increased to reduce the amount of light reflected from the object. In the illustrated embodiment, the strobe device 9 is a movable concave reflector 59 operatively associated with a fixed Fresnel lens L ₆ and a xenon lamp 58 (FIG. 28) movable in the optical axis direction. ). Under some conditions a simple strobe with fixed illumination angle can be used.

Drive mechanisms for operating the finder device 8 and the strobe device 9 are shown in FIGS. The finder block 54 is mounted on one side of the base 6. The mother plate 60 fixed to the block 54 is provided with a guide pin 62 fitted in the linear guide groove 61 of the cam plate 53. The sliding motion in the lateral direction with respect to the optical axis of the cam plate 53 is limited by the coupling of the guide pin on the plate 60 and the guide groove 61 on the plate 53 as shown in FIG. 19 and FIG. 20. The edge of the plate 53 having the guide protrusion 60a is formed integrally with the finder mother plate 60. This arrangement prevents the cam plate 53 from floating from the mother plate 60, especially at the front end of the cam plate 53.

The finder base plate 60 has a variable magnification lens guide groove 63, a deflection prism guide groove 64, and a strobe guide groove 65. These guide grooves all extend parallel to the optical axis. The variable lens frame 66 (FIG. 23) carrying the variable magnification lens group L ₅ is provided with a guide projection 66a for operatively coupling the variable magnification lens guide groove 63. As shown in FIG. The deflection prism operating plate 6 is provided with a guide protrusion 67a for operatively coupling the deflection prism guide groove 64. The strobe case 68 having the concave reflector 59 fixed thereto is provided with a guide projection 68a for operatively engaging the strobe guide groove 65. Therefore, each of the variable magnification lens frame 66, the deflection prism operating plate 67, and the strobe case 68 is movable in the direction parallel to the optical axis along each guide groove. Guide protrusions 66a, 67a, 68a are provided with drive pins 69, 70, 71 for operatively coupling variable magnification cam groove 55, parallax compensation cam groove 56, and strobe cam groove 57, respectively. Therefore, when the cam plate 53 moves laterally with respect to the optical axis, the variable magnification lens frame 66, the refraction frame operating plate 67, and the strobe case 68 move in the respective cam grooves 55, 56, 57.

The portions of the variable magnification cam groove 55, the parallax compensation cam groove 56, and the strobe cam groove 57 are uniquely related to various portions of the zoom cam grooves 20 and 21 described with reference to FIG. That is, the variable magnification cam groove 55 includes a wide angle minus fixing part 55a, a variable magnification part 55b, and a telescopic minus fixing part 55c, the part of which corresponds to the same angle shown in FIG. ₁ , θ ₂ and θ ₃ are also shown. The parallax compensating cam groove 56 has a non-projection portion 56a, a projecting movement portion (advanced transfer portion relative to macro mode) 56b, and a projected position fixing portion (macro termination fixing portion) 56c. The strobe cam groove 57 has a wide-angled terminal fixing portion 57a, a variable magnification portion 57b, a telephoto end fixing portion 57c, a macrofeeding portion 57d, and a macro terminus fixing portion 57e. The relationship between the cam grooves 55, 56, 57 and the zoom cam grooves 20, 21 is shown in FIG.

The variable magnification lens frame 66 supporting the variable magnification lens group L ₅ is movably supported on the guide surface 54a of the finder block 54, so that the frame 66 is therefrom as shown in FIG. Hang When the frame 66 moves as the cam plate 53 is displaced in response to the interaction between the pin 69 on the frame and the variable magnification cam groove 55, the movement of the frame 66 is performed by the objective lens group L ₃ and the eyepiece. The magnification of the finder optical system including the group L ₄ and the variable magnification lens group L ₅ is varied.

Therefore, the watch of the finder is almost coincident with the watch defined by the barrel block 1.

Referring to the deflection prism operating plate 67 shown in FIGS. 24 to 26, the deflection prism P ₁ made of synthetic resin is rotatable by the lower opposing support pin 74 on the finder block 54. Supported. Each support pin 74 is surrounded by a torsion spring 75, one end of which spring bears against each abutment 76 provided on the side of the deflection prism P ₁ . As a result, the deflection prism P ₁ is continuously biased toward the position where the prism is aligned with the optical axis of the lenses L ₃ -L ₅ . Each shift 76 is located in an arcuate groove 79 formed in the finder block 54. The deflection prism operating plate 67 is held between the finder block 54 and the guide plate 80 connected to the finder block. The guide pin 81 provided on the side of the guide plate 80 is operatively coupled to the linear guide groove 82 in the finder block 54.

When the pin 70 on the operating plate 67 is positioned in the portion 56a of the groove 56, the positioning shift 76 on the prism P ₁ rotates on the plate 67 as shown in FIG. It is coupled with the prevention surface 77. In this position the deflection prism operating plate 67 supports the deflection prism P ₁ outside the optical path of the lenses L ₃ -L ₅ opposite the bias of the spring 75. During the movement of the plate 67, which occurs when the pin 70 engages with the protruding portion 56b of the groove 56, the spring 75 moves the prism P ₁ to the optical path of the lenses L _3- L ₅ . Bias on. Ultimately, the guide surface 78 on the plate 67 engages with the alternating 76, causing the deflection prism P ₁ to rotate to align with the light path. This movement shift 76 moves to the guide surface 78 of the deflection prism P ₁ which is gradually aligned with the light path as shown in FIG. 25 and FIG. 26, so that the light path of the finder is in FIG. As shown, it is deflected down by the prism P ₁ . As a result, objects close to the camera and objects under the viewfinder enter the field of view. Therefore, parallax error is reduced in macro mode operation.

As shown in FIG. 28, a strobe case 63 is provided having a guide block 85 on one side operatively sliding in a linear guide groove 84 in a guide plate 80 parallel to the optical axis of the camera. . Height adjusting pins 86 (23rd and 27th) are located on the upper and lower surfaces of the case 68 and their axes when the pin 71 moves in the strobe cam groove 57 in response to the lateral movement of the cam plate 53. Slid the case during the displacement. The variable magnification portion 57b of the strobe cam groove 57 is effective to move the xenon lamp 58 farther away from the Fresnel lens L ₆ . The rearward movement of the xenon lamp 58 reduces the irradiation angle of the light transmitted by the Fresnel lens to actually increase the number of guides as the focal length increases. Further, the irradiation angle is increased when the pin 71 is located at the macrofeed portion 57d, and the number of guides is thus reduced. The last situation occurs during the camera's macro mode operation.

In the above, the mechanical design of a camera having an inter-lens shutter camera to which the present invention is applicable has been described. The control system according to the present invention will be described below.

[First Embodiment of Driving a Zoom Lens System]

In FIG. 1, reference numeral A10 is coupled to the lens system via a lens zoom lens A11 having an inter-lens shutter, and a drive system A13, in the opposite direction of the bar as indicated by the arrow in FIG. 1 along the optical axis. A first embodiment of the present invention is schematically designated including an optionally reversible motor A12 for moving.

Embodiment A10 is switch means A1 which can be operated by an operator and controls the operation of the motor A12 which moves the lens from the initial position on the axis to the final stop position which sets the focal length of the lens. It is composed. The present embodiment also includes control means for operating the motor A12 in the form of a lens start driving means A2 and a lens stop driving means A3 in response to the switch means A1 collectively, in its initial position. The lens shift to its final position always occurs after the lens A11 has moved to its final position in a predetermined direction. This is shown schematically in the block LX.

This arrangement accurately positions the lens in the final position by taking into account the same degree of backlash in the drive system A13 connecting the motor A12 and the lens A11.

The camera according to the present invention has a lens position that can vary from the retracted position of the zoom lens on the barrel block 1 to the open F value due to the change of the focal length, and from the retracted position of the wide angle or telephoto end to the macro photographing position. Various control may be performed according to the automatic detection information related to the change of the phase. In order to detect the lens position, the code sheet 90 schematically shown in FIG. 5 is fixed to the outer circumference of the cam ring 14 of the barrel block 1.

The stationary frame 91 in a position adjacent to the ring 14 carries a plurality of brushes 92 in sliding contact with the code sheet 90.

FIG. 29 shows the conduction portion on the cord sheet 90, the cam profile of the zoom cam grooves 20, 21 in the cam ring 14, and the cam grooves 55, 56, 57 in the cam plate 53 shown on the development plane of the cord sheet. Is a development plan view of the code sheet 90 showing the relationship with the cam profile. The brush 92 includes a common terminal C and terminals TO, T1, T2, and T3. When the terminals T0 to T3 contact the conducting land 93 of the cord sheet 90, a "0" signal is generated. When they are not in contact, a "1" signal is generated. Each position of the cam ring 14 is detected by the combination of these ("0", "1") signals. Reference numeral 94 denotes a conductive area separated from the land 93 by a non-conductive area. The information T0, T1, T2, T3 is supplied to the zoom code encoder as the zoom code data ZP0, ZP1, ZP2, ZP3. 30 is a table showing a combination of zoom code data ("1", "0"). In the embodiment of FIG. 5, the angular position of the cam ring 14 is divided into 13 steps, that is, "0" through "9", "A", "B", and "C" (hexadecimal). The position "0" corresponds to the locking position LOCK, and the position "C" corresponds to the macro shooting position MACRO. These intermediate positions are upper focal length positions in the range f0 to f7 '. These positions are also shown at the bottom of the cordsheet of FIG. As shown in FIG. 30, the zoom code data is a gray code in that only one bit varies between digits. “POS” is described in detail.

POS 1: The transition from the “LOCK” position to the “WIDE” terminal position is detected by a change from “1” to “0” in the data generated by the brush T2. Strictly speaking, the “LOCK” position is not “POS 0” but the position between “POS 0” and “POS 1”. But when the camera is in the “LOCK” position, the brush is in “POS 0” which is very close to “POS 1”. Similarly, the transition from the “WIDE” terminus to the variable magnification (“fo”) is the position between “POS 1” and “POS 2” and the data change from “0” to “1” in the data generated by the brush (TO). Is detected when there is.

However, “POS 2” of brush T2 is very close to “POS 1”. Thus, “POS 1” means that the cam ring 14 moves from “WIDE” terminus to “LOCK” or vice versa, and from “WIDE” terminus to “fo”.

POS f7 ': This area is provided to absorb the backlash of the cam ring 14 (lens system).

As shown in FIG. 45 and described in detail below, the cam ring stops immediately when a stop signal is given (ie, when the zoom switch is turned off) during the rotation of the cam ring from "POS 0" to "POS C". On the contrary, while rotating from "POS C" to "POS 0", the cam ring 14 is reversed only after passing through the selected position by a predetermined displacement and then stopping at the first change point of "POS".

"POS f7 '" is the "TELE" terminus, so the cam ring 14 is in the "TELE" terminus ("TELE" zone: the section in which the camera operates when the "TELE" is exposed), and the brush Is in “POS A” which is very close to “POS 9”. The focal length information or the F number information is transmitted to the shutter by the code plate and the brush. Therefore, the same focal length information is transmitted in the "TELE" zone and the "TELE" terminal. This is why “POS 9” is represented by “f7” and “POS A” is represented by “f7 ′” to distinguish it from “f7”. The zone of “f7 ′” is very small, so the zone of “f7 ′” can be regarded as basically the same as the “TELE” terminus.

POS B: This zone is provided to identify transitions between the “MACRO” and “TELE” terminals and between the “TELE” terminals and “f7 ′”.

POS 2-POS A: These represent the zoom range of the lens, and the intermediate focal length is composed of a plurality of focal length steps (9 in this embodiment).

The CPU checks the code information and the setting positions of the various switches at the time the power is applied.

No zooming is required if the mode switch is in “ZOOM” and the cam ring is positioned in either “POS 2” or “POS A”. The mode change switch is in any position other than “ZOOM”, ie, the middle position between “LOCK”, “LOCK” and “WIDE”, the middle position between “TELE” and “MACRO”, or “ZOOM”. In case of conversion, the zoom operation is executed immediately. The same is true when the switch changes to "ZOOM" regardless of whether or not the zoom code is within the range of "POS 2" = "POS A" where zooming is possible during reverse rotation of the zoom motor. Shooting is possible when the zoom code is outside this range, and thus the cam ring is moved to the zoom position. In other words, “POS 1” and “POS B” are positions where the stop of the cam ring is prohibited and cannot be taken.

Rotation of the cam ring 14 is controlled by the mode switch 101 and the zoom switch 102. 31 through 33 show a typical arrangement of switches 101 and 102 on the camera body. Reference numeral 99 denotes a multi-position button, the optical measuring switch 103 (see FIG. 36) is turned on when the first stage is pressed, and the release switch 123 is turned on when the second stage is pressed ( See FIG. 36).

The control system for a camera will be described in detail with reference to FIGS. 36 to 41. First, a brief overview of the control system is provided.

The mode switching switch 101 is a transfer position that can take three positions (LOCK, ZOOM, MACRO). When the macro shooting button 101a is not pressed as shown in Figs. 33 to 35, the switch lever 101b can be moved between the LOCK and ZOOM positions. By sliding the switch lever 101b to this button position while the macro photographing button 101a is pressed, the mode switching switch 101 takes the MACRO position. When the mode switch is in the LOCK position, the shutter cannot be released and zooming is not possible. When the mode switching switch 101 is set to the zoom position, the shutter can be released, and the zoom operation is also possible. When the switch 101 is set to the MACRO position, the shutter is releaseable but zooming is impossible. 42 shows another example of the zoom lens for moving the lens to the zoom and wide-angle positions by pressing the wide-angle button W and the telephoto button T, respectively.

When released, the zoom switch 102 takes the neutral position OFF. When force is applied in different directions, the switch is turned on and the setting changes to either the WIDE or TELE position depending on the direction of the force.

The zoom switch 102 rotates the zoom motor 5 in either the forward or reverse direction according to the switch setting.

The mode switching switch 101 and the zoom switch 102 allow the camera to operate as described below.

(1) The zoom motor 5 is rotated in the reverse direction by moving the mode switching switch 101 to the LOCK position. When the position of the cam ring 14 detected by the code sheet 90 and the brush 92 becomes "0" (see FIGS. 29 and 30), the zoom motor 5 is stopped.

(2) The zoom motor 5 rotates in the forward direction by moving the mode switching switch 101 to the MACRO position. When POS = "C" (29 degrees and 30 degrees), the zoom motor 5 is stopped.

(3) Move the mode switch 101 to the ZOOM position. When the zoom switch is set to the WIDE position, the zoom motor 5 rotates in the reverse direction, while the zoom switch is on, and the cam ring 14 is moved rearward. If the mode switching switch 101 is set to the WIDE position, after the POS becomes " 1 " (see FIG. 29 and FIG. 30), the zoom motor 5 continues to rotate in the reverse direction for a while. The rotation is reversed and the motor rotates in the forward direction until POS, which is the point at which the motor 5 stops, becomes "2".

If the switch 102 is set to the TELE position, the zoom motor 5 rotates in the forward direction while the switch is “on”. While the switch 102 maintains the TELE position, the cam ring 14 moves forward to POS = "A" (29 and 30 degrees), and the zoom motor 5 is stopped.

The motor is stopped immediately when the zoom switch 102 is turned off while the zoom motor 5 is rotated forward in the TELE direction. If the switch 102 is turned off while the motor 5 rotates in the WIDE direction (reverse), ie backward, the motor is stopped only after the motor has been reversed and after forward rotation has been permitted for a while. This forward rotation is to eliminate mechanical backlash in the lens drive system barrel block (1) and the finder block (2) to eliminate the difference between the stop positions of the motor (5) when rotating in the WIDE and TELE directions, respectively. .

In FIG. 36, the zoom motor control apparatus 100 (hereinafter referred to as "ZM / C") is constituted of, for example, a single chip microcomputer incorporating a program memory (ROM) in which a program described later is stored.

The ZM / C 100 is provided with switch data from the mode switching switch 101, the zoom switch 102, the distance measuring switch 103 and the zoom encoder 104 (shown as a switch equivalent circuit).

It also receives a zoom motor prohibition signal DIS, a serial data transfer clock CLK, and a serial signal SI carrying the switch check / operation end data described below from the main controller 109 (hereinafter referred to as MC / U). Receive. The ZM / C 100 supplies a rotation control command RCM to the zoom motor driving circuit 107 that controls the zoom motor 5, and a power maintenance signal pH for turning on / off the MC / U 109. And transmits the zoom encoder data to the MC / U 109, i.e., the serial signal SO carrying ZP0 to ZP3 from the zoom encoder 104.

The mode switching switch 101 generates two signals (LOCK, MACRO) as shown in Table 1 according to the three positions (LOCK, ZOOM, MACRO).

The zoom switch 102 takes three positions (WIDE MOMENTARY, OFF, TELE MOMENTARY).

The optical measuring switch 103 has a release button 99 of the distance measuring device 120 (consisting of the light emitter 3 and the light receiver 4 as described above) and the optical measuring device (A / E) 121. Activated when pressed to the first stage (to generate signal SWS) to initiate the action.

The zoom encoder 104 converts each position of the cam ring 14 into the zoom codes ZP0 to ZP3 by the code sheet 90 and the brush 92 and supplies the code to the ZM / C 100.

The switch scan control processing executed through the terminal SCC is generated only when a high voltage "H" is checked when the input is checked from each switch, and a low voltage "L" is used in a test mode other than the test mode to reduce power consumption. To be generated.

The voltage regulator 105 supplies the ZM / C 100 with a desired drive voltage supplied from the battery 106.

The zoom motor driving circuit 107 may be configured, for example, as shown in FIG. The operation of this circuit is a 4-bit (FOWN, FOWP, REVN, REVP) rotation control from the ZM / C 100 for controlling the rotation and stopping the zoom motor 5 as shown in the tables (2, 3). According to the command RCM, where "ON" corresponds to "1" in FIG. 30 and "OFF" corresponds to "0".

The MC / U 109 may be constituted by, for example, a single chip microcomputer, and executes the following functions by executing a program stored in its internal program memory.

(1) rotation control of the film take-up motor 111 through the winding drive circuit 110;

(2) driving and controlling the shutter block 23 through the driver 112;

(3) control of the various display indicators 115 via the driver 114;

(4) control of the strobe device 117 (the strobe circuit is the xenon light emitting tube 58) via the interface 116;

(5) outputting the zoom motor prohibition signal DIS to the ZM / C 100 through the interface 118;

(6) output of serial transmission clock (CLK) via interface 118;

(7) an output of a serial signal SI carrying switch check / end data, described below, via an interface 118;

(8) Keep regulator 124 operational.

In order to perform the above functions, the MC / U 109 includes switch data from a winding motor control switch 119 such as a film rewind switch and a rear cover switch, detected distance data from the distance measuring device 120, and an optical measuring device. Measured optical data from 121, film sensitivity setting from automatic film sensitivity reader (ISO) 122 or film sensitivity data and switch data (SWR) from release switch 123 are provided.

The MC / U 109 causes the voltage regulator 124 to remain in operation or started / stopped depending on the presence of the power maintenance signal supplied through the interface 118.

In addition, the regulator 124 is operated by the switch data from the winding motor control switch 119; In addition, when it is operated, the voltage regulator 124 supplies the desired power to various circuits of the main control system except for the zoom control system.

The operation of the ZM / C 100 in the flowcharts shown in FIGS. 38 to 41 will be described below together with the program stored in the ZM / C 100.

In FIG. 38, S1 performs an initialization process when the ZM / C 100 is excited by the battery 106 included in the battery case (not shown).

In S2, the CPU detects each state of the mode switching switch 101, the zoom switch 102, the optical measurement switch 103, and the zoom encoder 104 to execute a switch scan control process. S3 then checks the state of the optical measuring switch 103. When the optical measuring switch 103 is on, the CPU repeats the processing in S2 until the optical measuring switch 103 is turned off. When it is found that the optical measuring switch 103 is turned off, the CPU proceeds to S4, in which case the state of the zoom motor use prohibition signal DIS is checked. When this signal appears (ie DIS = "1"), the processing proceeds to S5.

However, if no signal appears (ie DIS = "0"), the process goes to S8.

The zoom motor prohibition signal DIS is provided to prohibit simultaneous operation of the winding motor 111 and the zoom motor 5 to reduce power consumption and extend the life of the battery 106. Therefore, only when the MC / U 109 is operated by the winding motor control switch 119 to allow the winding motor 111 to operate, the MC / U 109 turns on the use prohibition signal DIS. When the zoom motor prohibition signal DIS is turned on, the power holding signal PH is turned on (for example, "1").

The output purpose of the power holding signal PH in S5 is to execute the operation of the winding motor 111 when the MC / U 109 is executed by the winding motor control switch 119 rather than unconditionally causing the operation of the motor. It is. In other words, the operation of the motor 111 may occur only after being allowed by the power maintenance signal supplied from the ZM / C 100. In this way, the zoom motor 5 and the winding motor 111 cannot be rotated at the same time.

The process is stopped until the prohibition signal from the MC / U 109 is turned off at S6, that is, until the rotation control of the winding motor 111 is finished by the MC / U 109. When the zoom motor forbidden signal DIS is turned off, the power holding signal PH is turned off (for example, "0").

If it detects when DIS is off at S7, regulator 124 is off and the process is reset to S2. Even after the regulator 124 is turned off, not all power supplies are stopped.

For example, power is still supplied to the indicator 115.

When the processing proceeds to S4 and the signal DIS is turned off, the processing proceeds to S8 where the switch scanning procedure is executed similar to the procedure in S2. Processing then proceeds to S9 where the POS conversion is executed to detect the POS value (see Figs. 29 and 39) and the zoom codes ZP0 to ZP3 from the zoom encoder. In S10, the state of the mode switching switch 101 is checked for states ("LOCK", "ZOOM", "MACRO") predetermined in S8. If the position is "LOCK", the process proceeds to S11, if "ZOOM" to S14, and if "MACRO" to S16.

If the state of the switch 101 is "LOCK", it is checked whether the POS conversion in S11 to S9 is POS = 0. If POS = 0, the process is reset to S2. Otherwise, the process proceeds to S12 which applies an appropriate signal to the drive circuit 107 to execute reverse rotation of the motor 5 (see the rotation control command in Table 3). . Next, the mode subroutine described later is executed in S13, after which the process is reset to S2.

1인지의 여부를 S14에서 검사한다. POS

1이면 처리가 S17로 진행하여 줌모터(5)가 순방향으로 회전하도록 한다(테이블 2에서 회전제어 명령 참고). 후술하는 모드 서브루틴이 다음에 S13을 실행하며, 그후에 처리는 S2로 리세트된다.When the state of the switch 101 is "ZOOM", the POS conversion in S9 is POS

Whether it is 1 is checked in S14. POS

If 1, the process proceeds to S17 to cause the zoom motor 5 to rotate in the forward direction (see the rotation control command in Table 2). The mode subroutine described later executes S13 next, after which the process is reset to S2.

B인지 여부를 검사한다. POS

B이면 절차는 S12로 진행하며 그후 S13에서 하기의 서브루틴이 실행되고 그후에 S2로 리세트되고, 그렇지 않은 경우에 처리는 S18로 진행한다.POS> 1 to S15 means that the POS conversion in S9 is POX.

Check if it is B POS

If B, then the procedure proceeds to S12, in which the following subroutine is executed and then reset to S2, otherwise the processing proceeds to S18.

If the state of the switch 101 is "MACRO", S16 checks whether the POS conversion in S9 is POS = C. If POS = C, the process jumps to S22, but otherwise proceeds to S17 to enable forward rotation of the zoom motor 5. The mode subroutine to be described later is called next to execute S13, after which the process is reset to S2.

In S18, the state of the zoom switch 102 is checked based on the switch scan in S8. When this switch is set to TELE, the TELE subroutine described later is called and executed in S19, and the processing is reset to S2. If the switch is not set to TELE, processing proceeds to S20.

In S20, the state of the zoom switch 102 is checked based on the switch scan in S8.

When this switch is set to WIDE, the WIDE subroutine described later is called to execute in S21, and the processing is reset to S2. If the switch is not set to WIDE, the process proceeds to S22 where the state of the light measuring switch 103 is checked based on the switch scan in S8. If the switch 103 is not turned on, the process is reset to S4, otherwise the process proceeds to S23.

The processes S1 to S22 are main processes, and before describing the processing in S23 and the following processing, the operation of the camera as the mode subroutine in S13, the TELE subroutine in S19 and the WIDE subroutine in S21 will be described.

[Mode Subroutine of First Embodiment]

The mode subroutine will be described in detail with reference to the flowchart of FIG. The flowchart and the following flowchart use flags stored in registers in the RAM of the ZM / C 100 and the flag is designated as Fwide. When this flag is reset to zero, this means that the angular position of the cam ring 14 is such that the camera's lens system is positioned near the transition to the variable magnification position and at positions other than the wide angle terminator position (Figs. 29 and 30). See also). At this position POS = 2 and the lens system is set to f0

At S130, the CPU of the ZM / C 100 resets the flag to "0" and next executes the sequential processing at S131 and S132 similar to the processing already executed at S8 and S9.

Next, the state of the mode switching switch 101 in S133 is determined by the switch scan in S131. Processing then proceeds to S134 when the switch is in the "LOCK" position, to S138 when the switch is in the "MACRO" position, or to S142 when the switch is in the "ZOOM" position.

0인 경우에, 줌모터(5)는 그의 순방향 또는 역방향중 어느 한 방향으로 동작할 수도 있으며, 그 처리는 모터가 그의 역방향으로 동작하는지 여부를 검사하는 S136으로 진행한다. 모터가 역방향으로 진행되는 경우에는 처리가 S131로 즉시 리세트하며, 그렇지 않은 경우의(S17로 인하여) 처리는 ZM/C(100)가 모터를 역방향으로 동작시키는 회전제어명령을 발하며, 그후에 처리가 S131로 리세트된다.If the switch 101 is set to "LOCK", the process proceeds to S134 which checks whether the POS conversion executed in S132 generates POS = 0, that is, whether the LOCK position occurs. If the result of this inspection is POS = 0, the processing is S135 (rotation control command in table 3) to stop the rotation of the zoom motor 5 because the motor can only rotate inversely (due to S12). (Refer to RCM), and then the return process executes the program to return to S2 (Fig. 38). On the other hand, the result of the test is POS

If zero, the zoom motor 5 may operate in either its forward or reverse direction, and the process proceeds to S136 to check whether the motor operates in its reverse direction. If the motor proceeds in the reverse direction, the process immediately resets to S131, otherwise the process issues a rotation control command for the ZM / C 100 to operate the motor in the reverse direction, after which the process is performed. Reset to S131.

C이면, 줌모터(5)는 순방향 또는 역방향으로 회전할수 없으며, 처리는 그의 순방향으로 동작하는지 여부를 검사하는 S140으로 진행한다. 모터가 순방향으로 동작하면 처리는 즉시 S131로 리세트되며, 그렇지 않으면 처리가 S131로 복귀하기 전에 줌모터(5)는 순방향으로 회전하도록 명령된다.When the switch 101 is set to "MACRO", the flow to S138 checks whether the POS conversion executed in S132 generates POS = C, i.e., the MACRO position. In such a case, the process proceeds to S139 (refer to the rotation control command in Table 2) which performs the braking of the zoom motor 5 because the motor can only rotate in the forward direction, and the return process executes return to S2 (first 38 degrees). POS

If C, the zoom motor 5 cannot rotate in the forward or reverse direction, and the process proceeds to S140 to check whether it operates in its forward direction. If the motor operates in the forward direction, the process is immediately reset to S131, otherwise the zoom motor 5 is commanded to rotate in the forward direction before the process returns to S131.

A, POS

1 또는 2

POS

9를 발생했는지의 여부를 검사하는 S142로 진행한다. POS

1이면 S143으로, 2

POS

9이면 S153으로, 그리고 POS

A이면 S157로 각각 진행한다.When the switch 101 is set to "ZOOM", the processing is performed by the POS conversion executed in S132.

A, POS

1 or 2

POS

Proceed to S142 to check whether 9 has occurred. POS

1 is S143, 2

POS

9 is S153, and POS

If A, go to S157.

Recalling that the entry into the mode subroutine occurs with the motor rotating in the forward or reverse direction, the direction of rotation is checked with the following procedure.

1이 되도록 하는 경우에, 처리는 줌모터(5)가 순방향으로 회전하는가를 결정하도록 검사되는 S143으로 진행한다. 모터가 순방향으로 회전하면 처리는 S146으로 점프하며, 그렇지 않은 경우에 모터는 역방향으로 회전하고 처리는 대기처리가 소정시간(t msec)동안 실행되는 S144로 진행한다. t msec(밀리초)지연후에 처리는 모터(5)에 명령이 발송되어 순방향으로 회전시키는 S145로 진행한다. 이 명령후에 처리는 순차적으로 S146과 S147로 진행한다.POS conversion in S132 is POS

In the case of 1, the process proceeds to S143 which is checked to determine whether the zoom motor 5 rotates in the forward direction. If the motor rotates in the forward direction, the process jumps to S146, otherwise the motor rotates in the reverse direction, and the process proceeds to S144 where the waiting process is executed for a predetermined time (t msec). After the t msec (millisecond) delay, the process proceeds to S145 where a command is sent to the motor 5 to rotate in the forward direction. After this command, the processing proceeds to S146 and S147 sequentially.

In S146 and S147, processing similar to the processing performed in S8 and S9 in FIG. 38 occurs to scan the switch state and perform position conversion. Then, at S148 and S149, the state of the switch 101 is decoded to detect whether the operator has switched the switch 101 from "ZOOM" to "LOCK" or "MACRO". When the switch 101 is changed to "LOCK", the process is reset to S134. On the other hand, when the switch 101 is changed to "MACRO", the processing is reset to S138. If the switch 101 remains at "ZOOM", the process proceeds to S150.

S150 checks in S147 whether the POS transformation produces POS = 2.

2이면 처리는 S146으로 리세트되며, 그렇지 않으면 처리는 S151로 진행한다. POS=2에서 렌즈시스템은 그의 광각터미너스에 위치된다는 것을 상기하면, S151은 플래그(Fwide)를 “1”로 설정하고 처리는 S152로 진행하여 줌모터(5)가 적당한 명령(테이블 2 참조)에 의하여 브레이크되어 정지된다. 그후에 처리는 S2로 리세트된다(제38도).POS

If 2, the process is reset to S146, otherwise the process proceeds to S151. Recalling that the lens system is positioned at its wide angle minus at POS = 2, S151 sets the flag to “1” and processing proceeds to S152 whereby the zoom motor 5 issues the appropriate command (see Table 2). Brakes and stops. The process is then reset to S2 (Figure 38).

POS

9인 경우에, 처리는 줌모터(5)가 순방향으로 회전하는지를 검사하는 S153으로 진행한다. 순방향으로 회전하는 경우의 처리는 ZM/C(100)를 줌모터를 정지시키는 브레이크 명령을 발하도록 하며, 그후에 S2로의 리세트가 발생하는 S156으로 점프한다. 한편 줌모터가 역방향으로 회전하는 경우의 처리는, 모터(5)를 순방향으로 회전시키는 명령을 발하는, S154로 진행하며; 그후의 처리는, 대기처리가 후술하는 이유로 소정시간(t msec)동안 실행되는, S155로 진행한다.POS conversion in S132 is 2

POS

In the case of 9, the process proceeds to S153 which checks whether the zoom motor 5 rotates in the forward direction. Processing in the case of rotating in the forward direction causes the ZM / C 100 to issue a brake command to stop the zoom motor, and then jump to S156 where a reset to S2 occurs. On the other hand, the process in the case where the zoom motor rotates in the reverse direction proceeds to S154, which issues a command to rotate the motor 5 in the forward direction; Subsequent processing proceeds to S155 where the waiting processing is executed for a predetermined time (t msec) for reasons described later.

A인 경우에, 처리는 줌모터(5)가 역방향으로 회전하는지를 검사하는 S157로 진행한다. 모터가 역방향으로 회전하면 처리는 S159로 점프하며, 그렇지 않으면 모터(5)가 역방향으로 회전하도록 명령이 발신되며, 그후의 처리는 S159로 진행한다.After t msec has elapsed, the process proceeds to S156 in which a command for stopping the zoom motor 5 is sent in accordance with the brake command. Thereafter, a reset to S2 occurs. POS conversion of S132 POS

In the case of A, the process proceeds to S157 which checks whether the zoom motor 5 rotates in the reverse direction. If the motor rotates in the reverse direction, the process jumps to S159, otherwise an instruction is issued to rotate the motor 5 in the reverse direction, and subsequent processing proceeds to S159.

Processing similar to the processing for S8 and S9 in FIG. 38 is executed in S159 and S160, and processing similar to the processing for S148 and S149 is then executed in S161 and S162.

If the mode switching switch 101 remains in the "ZOOM" position, S163 checks whether the zoom motor 5 rotates in the reverse direction. The processing in the case of rotating in the reverse direction proceeds to S164, and the processing in the other case proceeds to S167.

9이면 처리는 S159로 리세트되며, 그렇지 않으면 S144와 S145에서 수행되는 처리와 유사한 처리가 S165와 S166에서 실행되며, 그후에 처리는 S159로 리세트된다.S164 checks whether the POS conversion in S160 is POS = 9. POS

If it is 9, the processing is reset to S159, otherwise processing similar to that performed in S144 and S145 is executed in S165 and S166, after which the processing is reset to S159.

A이면 처리는 S159로 리세트되며, 그렇지 않은 경우의 처리는 줌모터(5)를 정지하는 명령이 발신되는 S168로 진행한다. 그후에 처리는 S2로 리세트된다(제38도).If the process proceeds to S167 because the motor is running in the forward direction when S163 is executed, it is determined whether the POS conversion in S160 has generated POS = A indicating whether telephoto minus (f7 'in FIG. 30) has been reached. A check is made to determine whether or not. POS

If A, the processing is reset to S159, and if not, the processing proceeds to S168 where a command to stop the zoom motor 5 is sent. The process is then reset to S2 (Figure 38).

TELE Subroutine of First Embodiment

The flowchart of FIG. 40 details the TELE subroutine.

In S190, the CPU of the ZM / C 100 resets the wide-angle minus flag (Fwide) to "0", and the processing is S191 in which the result of POS conversion in S9 (FIG. 38) is checked for POS = A. Proceed to If POS = A, the process is immediately reset to S2 (FIG. 38), otherwise the process proceeds to S192 to execute forward rotation of the zoom motor 5. Thereafter, the processing proceeds sequentially from S193 to S196. In S193 and S194, processing similar to the processing in S8 and S9 (Fig. 38) is performed. In S195, it is checked whether the result of POS conversion in S194 is POS = A. In the case of POS = A, the process jumps to S197 which generates the brake and stop of the zoom motor 5, after which the process jumps to S2, after which the process is reset to S2 (Fig. 38).

A이면, 처리는 S193에서의 스위치 스캔에 의하여 줌스위치(102)가 “ZOOM”에서 “TELE”로 변화되었는지 여부를 검사하는 S196으로 진행한다. 스위치(102)가 “TELE”로 변경된 경우에는, 처리가 S193으로 리세트되며, 그렇지 않은 경우에는 처리가 줌모터(5)의 정지단계인 S197로 진행한다. 그후의 처리는 S2(제38도)로 리세트되어진다.POS

If A, the process proceeds to S196 which checks whether the zoom switch 102 has changed from "ZOOM" to "TELE" by the switch scan in S193. If the switch 102 is changed to "TELE", the process is reset to S193, otherwise the process proceeds to S197, which is the stop step of the zoom motor 5. Subsequent processing is reset to S2 (Fig. 38).

[WIDE Subroutine of First Embodiment]

41 is a detailed WIDE subroutine. In S210, the CPU of the ZM / C 100 tests whether the wide-minus terminus flag (Fwide) is set to Fwide = 1. The test is to determine whether the motor 5 is stopped at wide angle minus. If Fwide = 1, processing is immediately reset to S2 (Figure 38); Otherwise, processing proceeds to S211.

In S211, the zoom motor 5 receives the reverse rotation command, and the process proceeds to S212, which is a preparatory process for delaying the progress of the process to S213 for a predetermined time (t msec) for the reason described below. After t msec has elapsed, processes similar to those of S8 and S9 (FIG. 38) are executed in S213 and S214, before the process proceeds to S215 where the POS conversion in S214 is tested for whether POS = 1. If POS = 1, processing proceeds sequentially to S216 and then S217; Otherwise, processing proceeds to S223.

In S216 and S217, the processing of S144 and S145 (FIG. 39) is executed before proceeding sequentially to S218 and S219 where similar processing to that of S8 and S9 (FIG. 38) is executed.

2일 경우, 처리는 S218로 리세트되고; 그렇지 않을 경우 처리는 S221로 진행하여 광각터미너스 플래그(Fwide)를 “1”로 세트하고, 줌모터(5)의 회전을 중단하고 정지시키는 절차(S222)의 실행이 뒤따른다. 처리는 그후 S2로 리세트된다(제38도).After the position conversion process of S219 is executed, the process proceeds to S220 which tests whether the POS transformation is POS = 2 in S219. POS

If 2, the process is reset to S218; If not, the process proceeds to S221 where the wide angle minus flag Fwide is set to "1", followed by the execution of the procedure S222 of stopping and stopping the rotation of the zoom motor 5. The process is then reset to S2 (Figure 38).

1인 것을 발견한 경우, 처리는 S223으로 진행하여 줌스위치(102)가 S214에서 검출된 것처럼 WIDE로부터 변경되었는지를 체크한다. 만일 스위치(102)가 여전히 WIDE에 세트된 경우, 반전작동하는 모터는 렌즈가 POS=1에 고정되도록 렌즈를 구동한다. 만일 스위치(102)가 “WIDE”에 세트되지 않은 경우, 처리는 S154, S155 및 S156(제39도)에서 실행된 절차와 유사한 절차가 각각 초래되는 S224, S225 및 S226으로 순서적으로 진행한다. 그후 이 처리는 S2(제38도)로 리세트된다.If the test in S215 is POS

If found to be 1, the process proceeds to S223 to check whether the zoom switch 102 has been changed from WIDE as detected in S214. If the switch 102 is still set to WIDE, the inverting motor drives the lens so that the lens is fixed at POS = 1. If the switch 102 is not set to "WIDE", processing proceeds sequentially to S224, S225, and S226, respectively, in which a procedure similar to that performed in S154, S155, and S156 (FIG. 39) is brought about. This process is then reset to S2 (Figure 38).

[Operation of First Embodiment]

The results of the processing in S1 to S22 in FIG. 38 and the processing in FIGS. 39 to 41 are described below.

(1) The battery 106 is connected and none of the following switches are operated:

Take-up motor control switch 119, shutter release button 99 (and switch 123), and zoom switch 102.

(a) If the mode switching switch 101 is set to the LOCK position, the CPU of the ZM / C 100 executes an initialization process at S1 in FIG. 38, after which the cam ring 14 (front lens group ( The process is repeated according to the first loops S2 to S4, S8 to S11 and S2 under the condition that the rotational position of L ₁ ) and the rear lens group L ₂ is controlled at POS = 0; And no camera operation takes place. If the shutter release button 99 is pressed during the processing and the switch 123 and the light-measuring switch 103 are closed, the processing for S2 and S3 is repeatedly executed until the switch 103 is opened; And the operation of the shutter release button 99 is ignored.

0일 경우, 제38도에 있는 S12에서의 처리는 캠링(14)이 POS=0으로 이동될 때까지의 처리(S131 내지 S134, S136 및 S137)를 반복 실행하는 동안 계속되는 줌모터(85)의 역회전을 가져온다. 이 점에서, 처리는 제1루프의 S2에 리세트된다.If the rotational position of the cam ring 14 is POS

If 0, the processing in S12 in FIG. 38 is performed by the zoom motor 85 which continues while the processes S131 to S134, S136 and S137 are repeatedly executed until the cam ring 14 is moved to POS = 0. Bring reverse rotation. At this point, the process is reset to S2 of the first loop.

(b) When the mode switching switch 101 is changed from LOCK to ZOOM position, the CPU of the ZM / C 100 executes the first loop and then proceeds the program to S17 where the zoom motor 5 causes the forward rotation. The process proceeds sequentially through S130 to S133 and S142 (FIG. 39), and when the following processes (S148 and S149) are executed, the mode switching switch 101 does not change from ZOOM to LOCK or MACRO. The process proceeds to S143, S146, and S147. Loops S150 and S146 to S149 are executed until POS = 2; And when this condition is detected at S150, the zoom motor 5 is stopped to stop at S152 via S151 before the process is reset to S2 (FIG. 38). In other words, the rotation stop position of the cam ring 14 is wide angle minus (POS = 2), where the focal length fo shown in FIG. 30 is shown.

After the processing is reset to S2, the CPU of the ZM / C 100 performs the second loops S4, S8 to S10, S14, S15, S18, S20, S22 and S4 under the condition that the switch operation is no longer performed. Repeat the process accordingly.

(c) If the switch 101 is changed from the ZOOM to the MACRO position when the cam ring 14 is stopped at wide angle minus (i.e., POS = 2), the CPU of the ZM / C 100 will cause the program to exit at S10. Exit loop 2 and proceed to S16. At this time, since POS = 2, the process in S17 causes the zoom motor 5 to rotate in the forward direction, and when the order process of S131 to S133, S138, S140, and S131 (FIG. 39) detects POS = C. Repeatedly executed, at which time the process of S139 stops the motor 5. When POS = C, the processing is reset to S2 (Fig. 38), and the processing according to the third loops of S4, S8 to S10, S16, S22 and S4 is repeated under the condition that there are no further camera operations.

(d) If the mode switching switch 101 is changed from MACRO to ZOOM position, the CPU of the ZM / C 100 proceeds in sequence through S14, S15 and S12 when the program exits the third loop at S10. The reason is that at that time POS = C. Execution of the process S12 causes the motor 5 to rotate in reverse; Thereafter, the processes of S131, S133, S142, S157, S159, and S160 are executed in order. With the mode switching switch 101 remaining in the ZOOM position, the process executes the loops S163, S164 and S159 to S163 to drive the cam 14 until POS = 9. When POS = 9 is detected at S164, a t msec delay occurs at S165 and S166 after the rotation of the zoom motor 5 is changed from reverse to forward. The purpose of processes S165 and S166 will be described later.

By switching the switch 101 from the MACRO to the ZOOM position, the cam ring 14 is stopped at POS = A from the POS = 9 side. If the zoom motor 5 is stopped at POS = A by reading the POS = 9 from POS = A and immediately changing its rotation from the reverse direction to the forward direction, the drive and transmission system associated with the zoom motor 5 is driven. Backlash due to the device is likely to interfere with the correct positioning of the cam 14. The zoom motor 5 continues to rotate in the reverse direction for t msec after the detection of POS = 9, and then rotates the motor 5 in the forward direction, so that the motor 5 remains in the state where the backlash to the forward side is removed. Can be stopped exactly at POS = A. Processes S165 and S166 achieve this result.

After executing the process in S166 and being commanded to operate the motor in the forward direction, the program executes the loops S159 to S163, S167 and S159 to drive the cam 14 until POS = A. When POS = A is detected at S167, the process proceeds to S168 where the motor is stopped and stopped. The process is then reset to S2 (Figure 38).

The cam ring 14 after the process is reset to S2 becomes a telephoto terminal (POS = A) having a focal length of f ₇ ′ as shown in FIG. Since the second ring is repeatedly executed, the cam ring remains in the same position as described in item (b) above, in which no switch operation is performed after the process is reset to S2.

The switch 101 can be changed from MACRO to ZOOM position during the loop processing (S131-133, S138, S140, S141, S131), during which the cam ring 14 is in the position corresponding to POS = A, and the motor is forward It's working. In that case, branching to S157 occurs by S142. Subsequent to the branch S157, the processing in S158 is for the zoom motor 5 to reverse its rotation direction and start the reverse operation.

(e) When the cam ring 14 is stopped at the telephoto lens termination (POS = A), if the mode changeover switch 101 is switched from the ZOOM to the MACRO position, the subsequent processing will be carried out with POS = A instead of POS = 2. Similar to that described in item (c) except that

(f) The tests performed in S148, S149, S161 and S162 (FIG. 39) mentioned in the description of the above items (b) to (d) are performed by the mode switch 101 moving from ZOOM to LOCK or MACRO position. Determine if it has changed. If the change is in the LOCK position, the branch starting at S134 is started, and procedures S136 and S137 are executed until the cam ring 14 is stopped at POS = 0; Thereafter a reset to S2 occurs. If the change is in the MACRO position, the branch starting at S138 is started, and processes S140 and S141 are executed until the cam ring 14 is stopped at POS = C; Thereafter a reset to S2 occurs.

POS

9에 대응하는 위치에 있을 경우, ZM/C(100)의 CPU는 S133에서 분기가 일어나도록 프로그램되며, 처리는 S142 및 그다음 S153으로 진행한다.(g) If the mode switching switch 101 is changed to the ZOOM position, the first loop processing (S131 to S133, S138, S140, S141 and S131 (FIG. 39)) or the second loop processing (S131 to S137 and S131). (Fig. 39) Camring 14 is 2

POS

If it is in the position corresponding to 9, the CPU of the ZM / C 100 is programmed so that branching occurs in S133, and the processing proceeds to S142 and then S153.

POS

9에 대응하는 대응위치에 있는 동안, 모드절환스위치(101)는 후술하는 것처럼 줌스위치(102)의 조작 명세서에 따라 줌위치를 가정한다.If the zoom motor 5 rotates in the forward direction, the process jumps from S153 to S156, at which time the zoom motor 5 is stopped immediately, after which the process returns to S2. On the other hand, when the zoom motor 5 rotates in the reverse direction, the process proceeds to S154, where a delay of t msec occurs before the process proceeds to S156 where the motor is stopped to remove the backlash on the forward-rotating side. At rest, the rotational position of the cam ring 14 will be in the range of f0 to f7 shown in FIG. Camring 14 2

POS

While in the corresponding position corresponding to 9, the mode switching switch 101 assumes the zoom position in accordance with the operation specification of the zoom switch 102 as described later.

(h) If the mode switching switch 101 is changed from LOCK to ZOOM position, and the cam ring 14 is positioned at POS = 1 while executing the procedures S131 to S136 (FIG. 39), the zoom motor 5 X operates in the reverse direction and drives the cam 14 away from the desired end point POS = 2 of the cam 14 for the ZOOM mode of operation. The changed switch position is detected at S133 which proceeds the processing to S142, and S142 advances the processing to the branch starting at S143 (FIG. 39) again.

after the t msec delay, while continuing to rotate the motor in the reverse direction; The motor 5 starts its operation in the forward direction by the sequential execution of steps S144 and S145. The loops S146-S150 of the next step are executed until POS = 2 is detected in S150. Thus, the cams 14 and 2 reach the wide angle terminator switch when the motor 5 performs the forward operation. If the cam ring 14 is allowed to stop at POS = 2 by immediately reversing its reverse in the forward direction after reaching POS = 1 from POS = 2, the zoom motor 5 There is a possibility that the zoom motor 5 is stopped under the condition that the backlash such as the cogwheel of the drive and transmission system still exists. By causing the zoom motor 5 to rotate in the reverse direction for an additional period of t msec, and then the zoom motor 5 to rotate in the forward direction, the zoom motor 5 is driven with the backlash on the forward-rotating side with POS = 2 Can be stopped.

(2) If the winding motor control switch 119 is switched while the CPU of the ZM / C 100 executes the above-described loop processing, it occurs as follows:

When the CPU of the MC / U 109 turns on the zoom motor disable signal DIS, the CPU advances the processing from S4 to S5 on FIG. In S5, by turning on the power maintenance signal PH, the MC / U 109 rotates the winding motor 111 that is enabled and starts rotation. After the MC / U 109 finishes the control of the winding motor 111, the zoom motor disable signal DIS is turned off, and the CPU of the ZM / C 100 proceeds from S6 to S7 to maintain power. Turn signal PH off and reset the process to S2.

Branching from the above-described first or second loop processing to S4 and then to S7 inhibits the operation of the zoom motor 5 when the winding motor 111 is in operation; The operation of the light-measuring switch 103 and the shutter release switch 123 are ignored at the same time.

(3) If the zoom switch 102 is changed to the TELE side while the CPU of the ZM / C 100 executes the processing according to the above-described second loop, it becomes as follows.

POS

9), S192에서의 과정은 줌모터(5)가 순방향 회전되게 한다. 그후에, 줌스위치(102)가 TELE측에서 중립위치로 귀환되지 않는 상태에서, 루프(S193 내지 S196 및 S193)가 캠링(14)이 POS=A가 될 때까지 반복 실행된다. 이것이 발생할때, 과정 S197은 줌모터(5)의 또다른 이동이 정지되며, 처리는 그후에 S2(제38도)로 리세트된다.The CPU of the ZM / C 100 advances the processing to S19 in FIG. 38, and calls and executes the TELE subroutine shown in FIG. After the wide-angle flag (Fwide) is reset to "0" in S190, the process proceeds to S191. If the cam ring 14 is already stopped at the telephoto terminator switch (POS = A), the zoom motor 5 does not need to rotate, so the processing is immediately reset to S2 in FIG. If the cam ring 4 is in an arbitrary position different from the telephoto minus (i.e. 2, the TELE subroutine is called)

POS

9), the process in S192 causes the zoom motor 5 to forward rotate. After that, in a state where the zoom switch 102 is not returned to the neutral position on the TELE side, the loops S193 to S196 and S193 are repeatedly executed until the cam ring 14 becomes POS = A. When this occurs, the process S197 stops further movement of the zoom motor 5, and the processing is then reset to S2 (Fig. 38).

As above, when the zoom switch 102 is operated to the TELE side, the cam ring 14 is stopped at the telephoto end when the switch 102 is no longer switched.

POS

9에 대응하는 임의의 소망위치(즉, 렌즈시스템의 임의의 소망초점거리)에서 정지될 수 있다.However, if the zoom switch 102 returns to its neutral position while the cam ring 14 moves toward the telephoto end, the process proceeds to S196 to S197, and the zoom motor 5 is immediately stopped. On the other hand, by changing the zoom switch 102 from the TELE side to the neutral position at an appropriate timing, the cam ring 14 is

POS

It can be stopped at any desired position corresponding to 9 (ie any desired focal length of the lens system).

(4) If the zoom switch 102 is changed to the WIDE side while the CPU of the ZM / C 100 executes the processing in the above-described second loop, it proceeds as follows.

The CPU of the ZM / C 100 proceeds from S20 to S21 (FIG. 38), and calls and executes the WIDE subroutine shown in FIG. Initially, the state of the wide-angle flag (Fwide) is tested in S210; And if Fwide = 1, the cam ring 14 remains at the wide-angle end (POS = 2), and the rotation of the zoom motor 5 does not occur because the processing is immediately reset to S2 (Fig. 39). If Fwide = 0, S211 causes the zoom motor 5 to rotate in the reverse direction.

In S212, a delay of t msec occurs. In consideration of the possibility of the switch 102 being immediately returned to its neutral position after the switch 102 is changed to the WIDE side during this delay, the motor 5 continues the reverse rotation. In that case, the amount of reverse rotation of the zoom motor 5 is unclear, and there is a possibility that the amount of generated reverse rotation is too large to be overcome by the backlash removal operation caused by S224 and S255.

After the processing in S212 is executed, with the zoom switch 102 not being returned from the WIDE to the neutral position, the loops S213 and S215, S223 and S213 are repeated until the cam ring 15 reaches POS = 1. Is executed. When POS = 1, processing similar to the above-described processes S165 and S166 is executed at S216 and S217, and the loops of S218 to S220 and S218 are processed so that the cam ring 14 is driven at POS = 2 to eliminate backlash.

When the cam ring 14 is at wide angle minus (POS = 2), the process proceeds to S221 where the flag Wide is set to "1", and then to S222 where the rotation of the zoom motor 5 is stopped. The process is then reset to S2 (Figure 38).

POS

9인 범위내의 임의의 소망위치(소망 초점거리)에서 정지될 것이다.As above, if the zoom switch 102 is changed to the WIDE position, the cam ring 14 stops at the wide angle terminal (POS = 2) when the WIDE position setting is maintained. Of course, if the zoom switch 102 is opened and the cam ring 14 is returned to its neutral position while moving to the wide angle terminal, the backlash removing process similar to the above-described process (S154 and S155) of Fig. 39 is performed. And in S225; The zoom motor 5 is then stopped at S226. On the other hand, by returning the zoom switch 102 from the ZOOM position to the neutral position at the appropriate time, the cam ring 14 is reduced to 2 degrees.

POS

It will stop at any desired position (desired focal length) within the range of nine.

Now switching to the processes after S22 in FIG. 38, while the CPU of the ZM / C 100 executes the processes in the above-described second loop, the operation of the shutter release button turns on the photometer switch 103. (With the winding motor control switch 119 not turned on), the CPU of the ZM / C 100 proceeds from S22 to S23.

In S23, the power maintenance signal PH is turned on to operate the MC / U 109.

In the next S24, the presence of the zoom motor disable signal DIS from the MC / U 109 is tested to confirm the operation of the MC / U 109. If the operation is confirmed, serial-transmission of the POS conversion result in S9 is made to MC / U 109 in S25. The result of the POS transformation (zoom code data) is set in an output register; The dataset is then converted into a serial signal SO in synchronization with the clock CLK supplied from the MC / U 109 to the MC / U 109 for serial-transmission. The process waits for the above-described transfer process to end at S26, and proceeds to S27 at the end.

In S27, the serial signal SI including the switch check / operation end data from the MC / U 109 is input to the ZM / C 100; When the serial signal SI is input, the input data is checked in S28. If the input data is operation termination data (power maintenance off request data) END indicating that the operation of the MC / U 109 is finished, the process proceeds to S29; If the input data is the photo-measurement switch check data (SWSCHK), the process proceeds to S31; If the input data is the mode changeover switch LOCK check data (LOCKCHK), the flow proceeds to S34.

When the process proceeds to S29, the power maintenance signal PH is turned off because the operation of the MC / U 109 is terminated, and the process is turned off when the zoom motor disable signal DIS from the MC / U 109 is turned off. Proceed to S30. The process is then reset to S2.

When the process proceeds to S31, the power maintenance signal PH is temporarily turned off to inform the MC / U 109 that the switch 103 is on, and the process proceeds to S32, where the input data on each switch is set to S2. It is executed by a process similar to the process. In S33, the photometric switch 103 is tested to determine when it is turned on in accordance with the data reading in S32. If the light-measuring switch 103 is not on, the process waits at S30 to turn off the zoom motor disable signal DIS; The process is then reset to two. This indicates that the power maintenance signal PH is turned off at S31 when the photometering switch 103 is turned off.

If the light-measuring switch 103 is turned on, the process proceeds to S36 which tests whether the mode switching switch 101 is located at the LOCK position based on the data of S32. If the mode switching switch 101 is changed to the LOCK position, the processing is reset to S2 through S30, since it is not necessary to determine that the light-measuring switch 103 is on. However, if the mode switching switch 101 is not changed, the power maintenance signal PH is turned on again at S37, and the processing is reset to S27. On the other hand, when the MC / U 109 tests that the photo-measuring switch 103 is on, the CPU of the ZM / C 100 turns on and off the power maintenance signal PH when the switch 103 is on. Inform the MC / U 109 of the fact.

Finally, in S34 to S37 and S30, the MC / U 109 knows whether the mode switching switch 101 has been changed to the LOCK position.

The zoom code data (result of the POS conversion) and the optical measurement switch 103 turn-on data transmitted from the ZM / C 100 to the MC / U 109 in S23 to S37 are explained by the MC / U 109 as described later. Is used. The zoom code data represents the F stop value of the lens that changes depending on the variable power supply position. These data are supplied to a circuit (not shown) to control the shutter speed of the shutter block 23.

POS = C represents the position of the lens at that MACRO position.

The indication of POS = C is in the finder if the distance measurement data produced by the light-measuring device 120 is not within the MACRO range to provide a visual indication to the photographer and disable the operation of the shutter release switch 123. Is applied to the indicator 115. Data indicating that the light-measuring switch 103 is finally on can be used to initialize the operation of the light-measuring device 121.

In the first embodiment described above, the regulator 105 is operated unconditionally when the battery 106 is mounted in the battery case; However, it is possible to insert a manually operable switch in the electric wire from the battery 106 to the regulator 105 in order to manually operate the ZM / C 100 by the photographer.

Second Embodiment of Zoom Lens Driving

Referring now to FIG. 2, reference numeral B10 shows, in schematic form, a second embodiment of the QWHS invention, and moves the lens forward and backward along the optical axis as indicated by the arrows in FIG. A lens comprising a motor B12 for coupling, not shown), comprises a zoom lens B11 for a camera with a shutter. The switch means B2 has two operator input settings to control the operation of the motor B12 for moving the lens B11 from the initial position to the final position, the final position setting the focal length of the lens. It is a fixed position. Embodiment B10 also includes position detecting means B1 for detecting the position of the lens and control means B3 corresponding to the operation of the switch means B2 according to one of the two positions for motor operation as follows. do:

(1) the lens B11 moves a predetermined number of focal lengths discontinuously from its initial position to its final position; And

(2) The movement of the lens to the final position always occurs while the lens is moving in the predetermined direction.

In the second embodiment of the invention, the lens driving method is different from the lens driving method of the first embodiment; Only program changes are necessary. Before describing this embodiment in detail, the lens driving method is first described.

1) When the mode changeover switch 101 is set to the LOCK position and the cam ring 14 is located at an arbitrary position different from POS = 0, the zoom motor 5 has a POS = 0 (see Figs. 29 and 43). ) Is reversed to drive the cam ring 14 in the reverse direction until it is detected, and then stops.

2) When the mode switching switch 101 is set to the MACRO position and the cam ring 14 is positioned at an arbitrary position different from POS = "C", the zoom motor 5 is connected to POS = "C" (Fig. 29 and The cam ring 14 is driven in the forward direction until it is detected, and stops.

3) when the mode switching switch 101 is set to the ZOOM position and the cam ring 14 is located at an arbitrary position other than POS = “2” (ie any focal length step of fo to f);

a) Each time the zoom switch 102 is switched to the TELE position, the zoom motor 5 rotates forward and stops after the cam ring 14 experiences a change in one focal length step; And

b) Each time the zoom switch 102 is switched to the WIDE position, the zoom motor 5 rotates in reverse direction until the cam ring 14 experiences a change in two focal length steps. A forward rotation is made until this one focal length step is experienced, as a result of which a reduction in the one focal length step occurs with respect to the step where the switch 102 is changed to the WIDE position. The reason why the cam ring is driven so is the stop position of the zoom motor 5 when the mechanical backlash in the barrel block 1 and the finder block 2 stops after the rotation in the WIDE direction or after the rotation in the TELE direction, respectively. It is removed so that there is no difference between them.

The overall control system of the camera including the above-described control is described below with reference to FIGS. 44 to 46. The main flow chart of the second embodiment is the same as that shown in FIG. 38, and the description thereof is the same as that of the first embodiment.

The flowchart of the mode subroutine for the second embodiment (Fig. 44) is different from the flowchart of the mode subroutine of the first embodiment. In the mode subroutine of FIG. 44, the CPU of the ZM / C 100 sets the wide-angle terminator flag (wide-terminus becomes POS = 2 or fo in FIGS. 29 and 43) (Fwide) in S130A. (This flag reset is optional in the second embodiment). In S131A and S132A, a process similar to S8 and S9 in FIG. 38 is executed. In S133A, the mode changeover switch 101 is tested for “LOCK”, “ZOOM” or “MACRO” based on the switch scan in S132A. The process goes to S134A when the switch 101 is set to the “LOCK” position, to S138A when the switch 101 is set to the “MACRO” position, and to S142A when the switch 101 is set to the “ZOOM” position. Proceed.

0일 경우, S136A는 줌모터(5)가 역방향 회전인가를 테스트한다. 만일 그렇다면 처리는 즉각 S131A로 리세트되고; 그렇지 않다면, S137A에서의 처리로 모터(5)가 역방향 회전하게 한 후에 처리는 S131A로 리세트된다.If the switch 101 is set to the "LOCK" position, S134A tests whether the conversion result of S132A is POS = 0. If so, the zoom motor 5 stops at S135A (see the rotation control command (RCM) in Table 3) because the motor rotates in reverse direction; The process is then reset to S2 (Figure 38). On the other hand if POS

If zero, S136A tests whether the zoom motor 5 is reverse rotated. If so, the process is immediately reset to S131A; Otherwise, the process is reset to S131A after causing the motor 5 to rotate in the reverse direction by the process in S137A.

C인 경우, S140A는 모터(5)가 순방향 회전인가를 테스트한다. 만일 그렇다면, 처리는 즉각 S131A로 리세트되며; 그렇지않다면 S141A의 처리로 모터(5)를 순방향 회전되게 한후에 처리는 S131A로 리세트된다.If the switch 101 is set to the "MACRO" position, S138A tests whether the conversion result of S132A is POS = C. If so, the zoom motor 5 stops at S139A because of the forward rotation of the motor; The process is then reset to S2 (Figure 38). POS

If C, S140A tests whether the motor 5 is in forward rotation. If so, the process is immediately reset to S131A; Otherwise, after the motor 5 is rotated forward by the processing of S141A, the processing is reset to S131A.

A, 또는 POS

1, 또는 2

POS

9인가를 테스트한다. 처리는 POS

1일 경우 S143A로, 2

POS

9일 경우 S153A로, POS

A일 경우 S165A로 진행한다. POS

1일 경우, S134A는 줌모터(5)가 순방향 회전인가를 테스트한다. 만일 그렇다면, 처리는 S146A로 점프한다; 그렇지 않다면 S144A의 과정이 실행된다.If the switch 101 is set to the "ZOOM" position, the S142A switches the POS of S132A to POS.

A, or POS

1, or 2

POS

9 tests. Processing POS

1 is S143A, 2

POS

9 is S153A, POS

If A, go to S165A. POS

If 1, S134A tests whether the zoom motor 5 is in forward rotation. If so, the process jumps to S146A; Otherwise, the process of S144A is executed.

In S144A, the waiting process is executed and the delay of the processing is delayed for a predetermined time (t msec) for the reason described later. After t msec has elapsed, S145A changes the direction of the zoom motor 5 from the reverse direction to the forward direction.

Next, in S146A and S147A, processing similar to S8 and S9 in FIG. 38 is executed; Then in S148A and S149A, the switch 101 is tested to determine the change from "ZOOM" to "LOCK" or "MACRO" based on the switch scan of S146A. If the position is changed to "LOCK", the process is reset to S134A; If the position is changed to "MACRO", the process is reset to S138A. If the position is “ZOOM”, processing proceeds to S150A.

S150A tests whether the POS conversion result of S147A is POS = 2. If so, the process proceeds to S151A; Otherwise, the process jumps to S146A. At POS = 2, the lens system is located at wide angle minus, so the flag is set to “1” in S151A (this flag setting is only optional in this embodiment), and the process stops the zoom motor 5 at rest. Proceed to S152A; The process is then reset to S2 (Figure 38).

POS

9일 경우, 처리는 S142A에서 S153A로 진행하여 모터(5)가 순방향 회전인가를 테스트한다. 만일 그렇다면, 처리는 S132A의 POS 변환 결과가 레지스터(MPOS)에 기억되는 S160A로 점프한다. 그후에, S161A 및 S162에서, 제38도의 S8 및 S9와 유사한 처리가 실행된다.If the S132A's POS conversion is 2

POS

If 9, the process proceeds from S142A to S153A to test whether the motor 5 is in forward rotation. If so, the process jumps to S160A in which the POS conversion result of S132A is stored in the register MPOS. Then, in S161A and S162, processing similar to S8 and S9 in FIG. 38 is executed.

The motor now makes a forward motion to drive the cam ring 14 in the direction of f ₇ ′. POS conversion is executed in S162A; In S163A, the POS conversion result of S162A is POS = Mpos + 1, that is, the POS data stored in the previous register (MPOS) is converted to TELE by 1, and if POS = Mpos + 1, the zoom motor 5 in S164A. Stop; The process is then reset to S2. If POS = Mpos + 1 is false, the process repeats S161A and S162A until POS = Mpos + 1 is true.

If the test of S153A indicates that the zoom motor 5 is reverse rotation, the process proceeds to S154A in which the POS conversion result of S132A is stored in the register MPOS. After scanning the switch in S155A and POS conversion in S156A, The process proceeds to S157A where POS = Mpos-1 is evaluated. In S157A, it is checked whether the POS conversion result of S156A is POS = Mpos-1, that is, the POS data stored in the previous register (MPOS) has been converted to WIDE by one. If POS = Mpos-1, then the process proceeds to S158A. do. If POS = Mpos-1 is false, the process repeatedly executes S155A and S156A until POS = Mpos-1 is true, and then the process proceeds to S158A.

In S158A and S159A, processing similar to the above-described S144A and S145A is executed.

Then, after the processing of S160A to S164A is executed, the processing is reset to S2 (Fig. 38).

A일 경우, 처리는 S165A로 진행하여 모터(5)가 역방향 회전인가를 테스트한다. 만일 그렇다면 처리는 S167A로 점프하며; 그렇지 않다면 처리는 S168A로의 처리의 진행전에 모터(5)를 반전시키는 S166A로 진행한다.If the POS conversion of S142A is POS

If A, the process proceeds to S165A to test whether the motor 5 rotates in reverse direction. If so, the process jumps to S167A; Otherwise, the process proceeds to S166A which inverts the motor 5 before proceeding to S168A.

In S167A and S168A, processing similar to S8 and S9 in FIG. 38 is executed; In S169A and S170A, processing similar to S148A and S149A is executed.

9를 테스트한다. 만일 POS

9일 경우, 처리는 S167A로 리세트되며; 그렇지 않다면 처리는 상술한 S144A 및 S145A와 유사한 S173A 및 S174A의 과정이 실행된 후 S167A로 리세트된다. S175A는 S168A의 POS 변환 결과가 POS=A, 즉 망원 터미너스(제43도의 f₇′)에 도달되었는가를 테스트한다. 만일 POS

A일 경우, 처리는 S167A로 리세트되며; 그렇지 않다면 모터(5)가 정지되는 S176A의 과정이 실행된후 처리는 S2(제38도)로 리세트된다.If the mode switching switch 101 is in the “ZOOM” position (as confirmed in S167A), S171A tests whether the zoom motor 5 is rotated in reverse direction. If so, processing proceeds to S172A; Otherwise proceed to S175A. In S172A, POS conversion of S168A is POS

Test 9. POS

If 9, the process is reset to S167A; Otherwise, the processing is reset to S167A after the processes of S173A and S174A similar to S144A and S145A described above are executed. S175A tests whether the POS conversion result of S168A has reached POS = A, that is, telephoto termination (f ₇ ′ in FIG. 43). POS

If A, the processing is reset to S167A; Otherwise, after the process of S176A in which the motor 5 is stopped is executed, the process is reset to S2 (Fig. 38).

TELE Subroutine of Second Embodiment

Referring now to the flowchart of the TELE subroutine of FIG. 45, the CPU of ZM / C 100 checks in S190A whether the POS conversion result of S9 in FIG. 38 is POS = A.

A, 즉 2

POS

9일 경우, 처리는 S9(제38도)에서의 POS 변환결과가 레지스터(Mpos)에 기억되는 S191A로 진행하며; 그후 S192A에서 모터(5)가 순방향 회전되게 한다.POS

A, that is 2

POS

If 9, the process proceeds to S191A in which the POS conversion result in S9 (FIG. 38) is stored in the register Mpos; Then, in S192A, the motor 5 is rotated forward.

Mpos+1일 경우, POS=Mpos+1일 때까지 즉, 캠링(14)의 위치가 1초점거리 단계만큼 증가할 때까지, S193A 내지 S195A의 과정이 반복되며; 그후 처리는 후술될 과정이 실행되는 S197A로 진행한다. 만일 POS=A일 경우, 처리는 스위치를 스캔하는 S197A로 점프한 다음, 줌 스위치(102)가 여전히 TELE측에 위치되는가를 체크하는 S198A로 진행한다. 만일 그렇다면, 렌즈가 망원 터미너스에 올바르게 위치되므로 S197A 및 S198A의 과정이 반복실행된다. 그러나 만일 스위치(102)가 TELE측에 위치하지 않을 경우, 처리는 S2(제38도)로 귀환한다.Subsequently, processing similar to S8 and S9 in FIG. 38 is executed in S193A and S194A. S19A then tests that the POS conversion result of S194A is POS = Mpos + 1, which determines whether the position of the cam ring 14 is changed by one focal length step in the TELE direction. If POS = Mpos + 1 is true, the motor 5 is stopped at S196A; Processing then proceeds to S197A. POS

In the case of Mpos + 1, the processes of S193A to S195A are repeated until POS = Mpos + 1, that is, until the position of the cam ring 14 is increased by one focal length step; Processing then proceeds to S197A, where a process to be described later is executed. If POS = A, the process jumps to S197A which scans the switch, and then proceeds to S198A which checks whether the zoom switch 102 is still located on the TELE side. If so, the process of S197A and S198A is repeated because the lens is correctly positioned at the telephoto end. However, if the switch 102 is not located on the TELE side, the process returns to S2 (Fig. 38).

WIDE Subroutine of Second Embodiment

Referring now to the flowchart of the WIDE subroutine of FIG. 46, the CPU of the ZM / C 100 in S210A shows that the POS conversion result of S9 in FIG. 38 causes the zoom motor 5 to position the cam ring 14 at the wide angle minus. First test if POS = 2. If POS = 2, the process jumps to S222A where a scan of the switch is performed before proceeding to S223A which tests whether the zoom switch 102 is still set to the WIDE position. If so, the process of S222A and S223A is repeated to wait for a change. If the switch 102 is not set to the WIDE position, the process is reset to S2 in FIG.

If the POS conversion result of S9 in FIG. 38 is POS2, the process proceeds to S211A in which the POS conversion result of S9 in FIG. 38 is stored in the register Mpos. In S212A, the zoom motor 5 is commanded in the reverse rotation to drive the cam ring toward the wide angle terminal.

In S213A and S214A, processing similar to S8 and S9 in FIG. 38 is executed; Then in S215A, POS = Mpos-2 is evaluated using the POS conversion result of S214A. If POS = Mpos-2, that is, when the cam ring moves two steps in the direction of the wide angle minus from its original position, the process proceeds to S216A; Otherwise, the process of S213A to S215A is repeated until POS = Mpos-2.

In S216A and S217A, processing similar to S144A and S145A in FIG. 44 is executed, and then in S218A and S219A, processing similar to S8 and S9 in FIG. 38 is executed, and the processing proceeds to S220A.

Mpos-1일 경우, S218A 내지 S220A의 과정이 POS=Mpos-1이 될 때까지 반복 실행된다. 만일 POS=Mpos-1일 경우, 처리는 모터(5)가 정지되는 S221A로 진행하며; 그렇지 않다면 POS=Mpos-1이 참이 될 때까지 S218A, S219A가 반복 실행된다.In S217A, the cam ring is moved by two focal length steps from its initial position toward the wide angle terminal, and the motor operates in the forward direction to drive the cam ring away from the wide angle terminal side. In S220A, the POS transformation of S219A tests POS = Mpos-1 to determine whether the cam ring advances by one step from its initial position. POS

In the case of Mpos-1, the processes of S218A to S220A are repeatedly executed until POS = Mpos-1. If POS = Mpos-1, the process proceeds to S221A where the motor 5 is stopped; Otherwise, S218A and S219A are executed repeatedly until POS = Mpos-1 becomes true.

[Operation of Second Embodiment]

The results of the processing in S1 to S22 in FIG. 38 and in FIGS. 44 and 46 are described below.

The description of the same operation as that of the corresponding portion of the first embodiment is omitted.

(1) The battery 106 is mounted in a battery case (not shown), and none of the winding motor control switch 110, the shutter release button 99 and the zoom switch 102 is operated:

a) If the mode switching switch 101 is set to the LOCK position, the processing to be performed is as described in section (1) (a) in the description of the first embodiment.

b) If the setting of the mode switching switch 101 is changed from LOCK to ZOOM position, the processing to be performed is as described in section (1) (b) in the description of the first embodiment.

c) If the setting of the mode switching switch 101 is changed from ZOOM to MACRO position when the cam ring 14 is stopped at the wide angle terminal, the processing to be performed is performed by the paragraph (1) (c) in the description of the first embodiment. Same as described in).

d) If the setting of the mode switching switch 101 is changed from MACRO to ZOOM position, the processing to be performed is as described in section (1) (d) in the description of the first embodiment.

e) If the setting of the mode switching switch 101 is changed from ZOOM to MACRO position when the cam ring 14 stops at the telephoto end (POS = A), the processing to be executed is the starting point POS instead of POS = 2. Same as described in section c) above, except that = A.

f) When the tests of S148A, S149A, S169A and S170A in FIG. 44 described in paragraphs b) to d) above determine that the setting of the mode changeover switch is changed from the ZOOM position to the LOCK or MACRO position, S136A, S137A or Each loop process of S131A to S134A is executed. In S135A, which is reached due to the mode change to the LOCK position, the cam ring 14 is driven until it stops after reaching POS = ø.

In S139A, which is reached due to the mode change to the MACRO position, the cam ring 14 is driven until it reaches POS = C and stops.

POS

9의 범위에 위치하는 동안, 모드절환스위치(101)의 세팅이 ZOOM 위치로 변경될 경우, ZM/C(100)의 CPU의 처리를 S133A에서 상술한 루프로부터 분기되어 S142A로 진행한다.g) during the looping process (S131A to S133A, S138A, S140A, S141A to S131A) in FIG. 44 or during the other loop processing (S131A to S137A to S131A), the cam ring 14

POS

While in the range of 9, when the setting of the mode switching switch 101 is changed to the ZOOM position, the processing of the CPU of the ZM / C 100 branches from the loop described above in S133A and proceeds to S142A.

POS

9이므로, 처리는 S153A로 진행한다. 만일 줌모터(5)가 순방향 회전일 경우, 처리는 S153A에서 S160A로 진행하여 S160A 내지 S164A의 실행을 허용하며, 이에 의해 줌모터(5)는 POS가 망원터미너스의 방향으로 +씩 변경되는 위치로 진행한다. 반면에, 만일 줌모터(5)가 역방향 회전일 경우, 처리는 S153A에서 S154A로 진행하며, POS는 광각 터미너스의 방향으로 -1씩 일시적으로 변경된다.2 in this case

POS

Since 9, the process proceeds to S153A. If the zoom motor 5 is in the forward rotation, the process proceeds from S153A to S160A to allow execution of S160A to S164A, whereby the zoom motor 5 has a position where the POS is changed by + in the direction of telephoto minus. Proceed to On the other hand, if the zoom motor 5 is in the reverse rotation, the processing proceeds from S153A to S154A, and the POS is temporarily changed by -1 in the direction of wide angle terminator.

However, the motor 5 continues to rotate in the reverse direction for t msec. Thereafter, the rotation of the zoom motor 5 is reversed to start forward rotation and eventually stops when POS is changed by +1 to the TELE side.

POS

9)에 있을때, 캠링(14)의 위치는 모드절환스위치(101)의 세팅에 따라 순방향 또는 역방향으로 1단계 변경된다.On the other hand, the initial position of the lens is in the zoom range (2

POS

When in 9), the position of the cam ring 14 is changed one step in the forward or reverse direction depending on the setting of the mode switching switch 101.

POS

9에 대응하는 위치에 있을때, 모드절환스위치(101)는 후술될 줌스위치(102)의 동작설명에 따라 ZOOM위치를 추정한다.2 regardless of whether the cam ring is

POS

When in the position corresponding to 9, the mode switching switch 101 estimates the ZOOM position according to the operation description of the zoom switch 102 which will be described later.

h) If the setting of the mode switching switch 101 is changed from LOCK to ZOOM position when the cam ring 14 is in the position corresponding to POS = 1 in the loop processing (S131A to S136A to S131A) of FIG. The processing is the same as that described in section (1) (h) in the description of the first embodiment.

(2) If the winding motor control switch 119 is operated while the CPU of the ZM / C 100 executes the loop processing according to the first loop, the second loop, and the like described above, the processing to be executed is performed in the first embodiment. Same as the description in clause (2) in the description.

(3) If the zoom switch 102 is operated to the TELE side when the CPU of the ZM / C 100 executes the processing in the above-described second loop, the processing described below is executed.

POS

9)와 다른 위치에서 정지할 경우, 레지스터(Mpos)로 POS의 값을 이동시키는 상술한 처리가 S191A에서 실행되며, 캠링(14)이 POS=Mpos+1인 위치로 구동될 때까지 S192A에서 모터(5)의 순방향 회전이 실행된다. 그 위치에서 S196A는 줌모터(5)를 정지시킨다. 그후에, 줌스위치(102)의 조작을 무효화시키는 처리가 후속적으로 실행되며, 처리는 제38도의 S2로 리세트된다. 르래서 줌스위치(102)가 TELE측으로 이동될 때마다, 캠링(14)은 망원터미너스의 방향으로 1단계 이동한다. 이런 방식으로, 캠링은 POS=2(f0)로부터 POS=A(f7′)까지 단계적으로 이동하며, 이에 의해 캠링(14)은 제43도에 도시한 소망초점거리에 위치할 수 있다.The CPU of the ZM / C 100 proceeds from S18 to S19 in FIG. 38, and then calls and executes the TELE subroutine shown in FIG. If the cam ring 14 stops at the telephoto end (POS = A), the rotation of the zoom motor 5 is unnecessary, and processing for invalidating the operation of the zoom switch 102 in S197A and S198A is executed. If the cam ring 4 has a telephoto minus (ie 2 when the TELE subroutine is called)

POS

When stopping at a position different from 9), the above-described process of moving the value of POS to the register Pos is executed in S191A, and the motor in S192A until the cam ring 14 is driven to the position of POS = Mpos + 1. Forward rotation of (5) is executed. At that position, S196A stops the zoom motor 5. Thereafter, a process of invalidating the operation of the zoom switch 102 is subsequently executed, and the process is reset to S2 in FIG. Each time the zoom switch 102 is moved to the TELE side, the cam ring 14 moves one step in the direction of the telephoto end. In this way, the cam ring moves step by step from POS = 2 (f0) to POS = A (f7 '), whereby the cam ring 14 can be located at the desired focal length shown in FIG.

(4) If the zoom switch 102 moves to the WIDE side when the CPU of the ZM / C 100 executes the processing according to the second loop described above, the processing described below is executed. The CPU of the ZM / C 100 advances the processing from S20 to S21 in FIG. 38 to call and execute the WIDE subroutine shown in FIG. In S210A, a test is performed for whether POS = 2. If POS = 2, the cam ring 14 stops at a wide angle termus, and thus the zoom motor 5 rotation is unnecessary; In S222A and S223A, a process of invalidating the operation of the zoom switch 102 is executed.

2일 경우, POS의 값을 레지스터(Mpos)에 이동시키는 상술한 처리가 S211A에서 실행되며, S212A에서 모터(5)는 그후 역방향 회전하도록 명령받는다.POS

If 2, the above-described process of moving the value of POS to the register Pos is executed in S211A, and in S212A, the motor 5 is then instructed to reverse rotation.

After the motor rotates in reverse, the cam ring 14 executes the loops S213A to S215A to be driven at POS = Mpos-2. When POS = Mpos-2, a process similar to the above-described processes (S165A and S166A) in the case of the first embodiment is executed in S216A and S217A to eliminate backlash, and loop processing until POS = Mpos-1 (S128A to S220A). ) Is executed.

When POS = Mpos-1, the rotation of the zoom motor 5 is stopped in S221A, and processing for invalidating the operation of the zoom switch 102 is subsequently executed in S222A and S223A, and then the processing is reset to S2 in FIG. 38. do.

Thus, each time the zoom switch 102 is moved to the WIDE side, the cam ring 14 moves one step in the direction of the WIDE terminator by removing the backlash. In this way, the cam ring can be moved step by step from POS = A (F7 ') to POS = (f0), whereby the cam ring 14 can be positioned at the desired focal point shown in FIG.

[Third Embodiment of Driving the Zoom Lens System]

In this FIG. 3, reference numeral C10 denotes a third embodiment of the present invention shown in schematic form. This embodiment C10 is a zoom lens for a camera having an inter-lens shutter with a motor C12 for moving the lens in a forward and backward direction, as shown by arrows in FIG. C11). The switch means C2 is a two-operator-selected input setting for controlling the operation of the motor C12 which moves the lens from the initial position to the final fixed position which sets the focal length of the lens, defined by the position of the lens when the switch is operated. Has

This embodiment C10 also includes a detector C1 for detecting the position of the lens, a delay means C6 for inducing a predetermined pause in the operation of the motor, and a continued switch C2 operation, a position detector. Means C1, and control means C3 corresponding to the delay means C6 for operating the motor as follows:

(1) the final position of the lens is a predetermined number of focal length steps separated from its initial position;

(2) Movement of the lens to its final position always occurs while the lens is moving in the predetermined direction; And

(3) The lens is fixed at its final position for the predetermined pause time before moving to another position located therefrom by the number of separated focal length steps.

In the third embodiment of the present invention, the driving method of the lens is different from the lens driving method of the foregoing two embodiments, but only program conversion is required. Before describing this embodiment in detail, the lens driving method will be described first.

(1) If the mode switching switch 101 is set to the LOCK position, and the cam ring 14 is at an arbitrary position different from POS = ø, the zoom motor 5 has POS = ø (Figs. 29 and 47). The cam ring 14 is driven in the reverse direction until it is detected, and then stopped.

(2) If the mode switching switch 101 is set to the MACRO position and the cam ring 14 is in any position other than POS = “C”, the zoom motor 5 rotates forward and POS = “C” ( The cam ring 14 is forward driven until it stops (see FIGS. 29 and 47).

(3) If the mode changeover switch 101 is in the ZOOM position and the cam ring 14 is in any position other than POS = “2” (ie at any focal length step of f7 ′):

a) If the zoom switch 102 is kept set to the TELE position, the zoom motor 5 rotates forward and the cam 14 is changed by one focal length step in the forward direction (i.e., the direction of telephoto minus). Stop. After stopping at the new focal length step for t msec, the previous step is repeated.

As a result, the cam ring moves in steps forward by one focal length step at a time, and pauses between steps until the cam ring reaches telephoto minus.

If the switch 102 is moved to the neutral position, the step operation of another cam ring is terminated.

b) If the zoom switch 102 is temporarily set to the WIDE position, the zoom motor 5 first rotates in the reverse direction until the cam ring 14 is changed by two focal length steps in the reverse direction from the initial position, After further rotating in the reverse direction for a predetermined time of tmsec, the rotation is reversed to operate in the forward direction until the cam ring is changed purely by one focal length step from the initial position to the rear direction, and the next motor stops rotating.

The barrel block 1 and the finder block 2 in order to minimize the difference between the stop positions of the zoom motor 5 when the finder block 2 stops rotating in the WIDE direction and stops rotating in the TELE direction. The cam ring is driven in the WIDE position of the switch 102 to eliminate mechanical backlash. If the switch 102 is in the WIDE position, the cam ring moves stepwise in the reverse direction by one focal length step at a time, and pauses between steps until the cam ring reaches wide angle minus.

The overall control system including the camera control described above is described below with reference to FIGS. 48 and 49. FIG. The main flow chart for the third embodiment of the invention is the same as that shown in FIG. 38, and the mode subroutine is the same as that shown in FIG. 44, and the description thereof corresponds to the description of the first and second embodiments. Same as wealth. However, the TELE and WIDE subroutines are different.

TELE Subroutine for Embodiment 3

A인 경우, 즉 2

POS

9인 경우, 처리는 S191B로 진행하여 레지스터(Mpos)에 제38도의 S9에서의 POS 변환결과(캠링의 초기위치)를 기억시킨다. S192B에서, 모터(5)는 순방향으로 회전하도록 명령받는다.Referring to the flowchart of the TELE subroutine of FIG. 48, in S190B, the CPU of the ZM / C 100 tests whether POS = A as a result of the POS conversion in S9 on FIG. If POS = A, the process is reset to S2 in FIG. POS

If A, i.e. 2

POS

In the case of 9, the process proceeds to S191B to store the POS conversion result (initial position of the caming) in S9 of FIG. 38 in the register Pos. In S192B, the motor 5 is commanded to rotate in the forward direction.

In S193B and S194B, processing similar to S8 and S9 in FIG. 38 is executed; Then in S195B, the POS conversion result of S194B is tested for POS = Mpos + 1 to determine if the cam ring moves by one focal length step from the initial position in the direction of the telephoto minus.

If POS = Mpos + 1, S196B causes the zoom motor 5 to stop, and scanning of the switch occurs at S197B. If the zoom switch 102 is not set on the TELE side when S198B is executed, the processing is reset to S2 in FIG. 38; If not, the switch 102 remains on the TELE side, and the process proceeds to S199B where a delay of t msec is executed. Thus, the cam ring moves forward by one focal length step from the initial position and stops at the new position for t msec.

After the delay, S200B causes the switch to be scanned. If the zoom switch 102 remains on the TELE side, S201B is executed, and the process is reset to S190B to repeat the above-described processes. If the switch is changed from the TELE side, the process is reset to S2 in FIG.

Mpos+1일 경우, S193B 내지 S195B의 처리가 POS=Mpos+1이 될 때까지 반복된다.In S195B, if POS

In the case of Mpos + 1, the processing of S193B to S195B is repeated until POS = Mpos + 1.

WIDE Subroutine for Embodiment 3

Referring to the flowchart of the WIDE subroutine in FIG. 49, in S210B, the CPU of the ZM / C 100 determines whether or not POS = 2 as a result of the POS conversion in S9 on FIG. Test if 5) has already stopped at the wide end. If POS = 2, the process is reset to S2 in FIG. 38; If not, the process proceeds to S211B and the result of the POS conversion (initial position of the cam) in S9 of FIG. 38 is stored in the register Pos. In S212B, the zoom motor is commanded to rotate in the reverse direction to drive the cam ring backward toward the wide angle terminal.

In S213B and S214B, processes similar to S8 and S9 in FIG. 38 are executed; Then, using the POS conversion result in S215B to S214B, POS = Mpos-2 is evaluated to determine whether the cam ring moves two focal length steps from the initial position to the wide angle minus direction. If POS = Mpos-2 evaluates to true, processing proceeds to S216B; If not, the processes of S213B to S215B are repeatedly executed until POS = Mpos-2 evaluates to true.

In S216B and S217B, processes similar to those described above for S165 and S166 in FIG. 39 are executed to delay reversal of motor rotation for t msec; Then in S218B and S219B, processes similar to those described above for S8 and S9 in FIG. 38 are executed.

The motor now rotates in the forward direction. In S220B, when POS = Mpos-1 is true and the cam ring is moved by one focal length step from its initial position in the direction of WIDE terminus based on the POS conversion of S219B, the process proceeds to S221B and the motor stops. If POS = Mpos-1, the processing of S218B to S220B is repeated until POS = Mpos-1.

The switch is scanned in S222B, and the state of the zoom switch 102 is tested in S223B. If the setting of this switch is changed, the process is reset to S2 in FIG. 38; Otherwise, S224B executes t msec wait before the switch is scanned again in S225B. In S226B, the state of the switch 102 is tested. If this switch is set on the WIDE side, the process is reset to S210B to repeat the above-described process. If the setting of the switch 102 is changed, the process is reset to S2 in FIG.

[Operation of Third Embodiment]

The processing results of S1 to S22 in FIGS. 38 and 44, 48 and 49 will be described later.

The description of the same operation corresponding to the case of the first and second embodiments is omitted.

(1) The battery 106 is mounted in a battery case (not shown), and none of the winding motor control switch 119, the shutter release button 99, and the zoom switch 102 is operated.

a) If the mode switching switch 101 is set to the LOCK position, the processing to be performed is the same as described in section (1) (a) in the description of the first and second embodiments.

b) If the setting of the mode switching switch 101 is changed from LOCK to ZOOM position, the processing to be performed is as described in section (1) (b) in the description of the first and second embodiments.

c) If the setting of the mode switching switch 101 is changed from the ZOOM to the MACRO position when the cam ring 14 is stopped at the wide angle terminal (POS = 2), the processing to be performed is described in the first and second embodiments. Same as described in paragraph (1) (c) in.

d) If the setting of the mode switching switch 101 is changed from the MICRO to the ZOOM position, the processing to be performed is as described in section (1) (d) in the description of the first and second embodiments.

e) If the setting of the mode switching switch 101 is changed from the ZOOM to the MACRO position when the cam ring 14 stops at the telephoto end (POS = A), the processing to be executed is performed at the starting point POS instead of POS = 2. Same as described in section c) above, except that = A.

f) When the tests of S148A, S149A, S169A and S170A in FIG. 44 described in paragraphs b) to d) above determine that the setting of the mode changeover switch is changed from the ZOOM position to the LOCK or MACRO position, the processing performed is In the description of the second embodiment, it is the same as point (1) (f).

POS

9의 범위에 위치하는 동안, 모드절환스위치(101)의 세팅이 ZOOM 위치로 변경될 경우, 실행되는 처리는 제2실시예의 서술에서의 절(1)(g)와 동일하다.g) during the looping process (S131A to S133A, S140A, S141A to S131A) in FIG. 44 or other loop processing (S131A to S137A to S134A).

POS

While in the range of 9, when the setting of the mode switching switch 101 is changed to the ZOOM position, the processing to be performed is the same as that in clause (1) (g) in the description of the second embodiment.

h) If the setting of the mode switching switch 101 is changed from LOCK to ZOOM position when the cam ring 14 is in the position corresponding to POS = 1 in the loop processing S131A to S136A to S131A of FIG. The processing is the same as that described in paragraph (1) (h) in the description of the first and second embodiments.

(2) If the winding motor control switch 119 is operated while the CPU of the ZM / C 100 executes the loop processing according to the first loop, the second loop, or the like described above, the processing to be executed is carried out in the first and second steps. It is the same as the description of section (2) in the description of the second embodiment.

(3) If the zoom switch 102 is operated to the TELE side when the CPU of the ZM / C 100 executes the processing in the above-described second loop, the processing described below is executed.

POS

9)와 다른 위치에서 정지한 경우, 레지스터(Mpos)로 POS의 값을 이동시키는 상술한 처리가 S191B에서(캠링의 초기위치를 평가하기 위해)실행되며, S192B에서 모터(5)의 순방향 회전이 실행되고, 다음과정(S193B 내지 S195B)에 의해 POS=Mpos+1일 때까지 캠링(14)이 구동된다. POS=Mpos+1이 참으로 평가될 때 S196B은 줌모터(5)가 정지되게 한다. S197B 및 S198B에서, 줌스위치(102)는 스캔된 다음 테스트된다.The CPU of the ZM / C 100 proceeds from S18 to S19 in FIG. 38, and then calls and executes the TELE subroutine shown in FIG. If the cam ring 14 stops at the telephoto end (POS = A), the zoom motor 5 rotation is unnecessary, and therefore the process is immediately reset to S2 in FIG. If the cam ring 14 has a telephoto minus (ie 2 when the TELE subroutine is called)

POS

When stopped at a position different from 9), the above-described process of shifting the value of POS to the register Pos is executed in S191B (to evaluate the initial position of the camring), and forward rotation of the motor 5 in S192B is performed. The cam ring 14 is driven until POS = Mpos + 1 by the following processes (S193B to S195B). S196B causes the zoom motor 5 to stop when POS = Mpos + 1 evaluates to true. In S197B and S198B, the zoom switch 102 is scanned and then tested.

If the switch is set to TELE-off, the process is reset to 2 in FIG. 38; However, if the switch is set to TELE-on, a pause between t 'msec is executed in S199B. Only when TELE-on is reconfirmed by the processes S200B and S201B, execution of the previous process S192B is repeated to cause the zoom motor 5 to rotate in the forward direction again.

Thus, as the zoom switch 102 is operated to the TELE side to turn on the motor, the cam ring 14 is repeatedly moved toward the tele-terminus by one focal length step in the forward direction, and the range of POS = 2 to POS = A Pause between steps of movement until traverse step by step. By turning on the TELE sufficiently long, the cam ring 14 is driven to stop at the telephoto end.

(4) When the zoom switch 102 is operated to the WIDE side while the CPU of the ZM / C 100 executes the above-described second process, the processing proceeds as follows.

a) The CPU of the ZM / C 100 advances the processing from S20 to S21 on FIG. 38 to call and execute the WIDE subroutine shown in FIG. POS = 2 is tested in S201B. In the case of POS = 2, the cam ring 14 is fixed to the wide angle termination, and it is not necessary to rotate the zoom motor 5 immediately.

The processing is then reset to S2 in FIG.

2인 경우, S211B는 POS의 값을 레지스터(Mpos)로 이동하여 캠링의 초기위치를 기억시키며, S212B는 줌모터(5)가 역방향 회전하도록 명령하여 캠링을 역방향으로 구동시킨다.POS

If 2, S211B moves the value of POS to the register Pos to store the initial position of the cam ring, and S212B instructs the zoom motor 5 to rotate in the reverse direction to drive the cam ring in the reverse direction.

After the processing in S212B is executed, loops S213B to S215B are executed to drive the cam ring 14 until POS = Mos-2 after the processing of S216B to S217B is executed. When occurring at motor reversal and S217B, the cam ring is between two and three focal length steps moved from the initial position in the direction of wide angle termination. These processes are similar to the processes of S165 and S166 described above in the case of the first embodiment for removing the backlash. After that, the loop processing (S218B to S220B) is executed until POS = Mpos-1. When this condition is detected, S221B stops the rotation of the zoom motor 5, the cam ring is moved in one focal length step from the initial position, and then S223B tests whether the switch 102 is currently set to WIDE-on. . If so, t 'msec stop is executed in S224B, and the zoom motor 5 starts the rotation again in the reverse direction by the processing of S212B. If the scan of S222B indicates that the switch 102 is set to WIDE-off, the process is reset to S2 in FIG.

Then, if the zoom switch 102 is operated with WIDE-on, the cam ring 14 repeats a series of moving, stopping and pause operations during the time that the switch is set to WIDE-on, At this time, the cam ring moves by one focal length step by step toward the wide angle terminal, and pauses for t 'msec between the steps. This stepwise progression of camring in the reverse direction is performed in such a way that backlash is eliminated. By being long enough at WIDE-on, the cam ring 14 is driven and stops at the wide angle terminal.

Fourth Embodiment of Driving the Zoom Lens System

Referring now to FIG. 4, reference numeral D10 denotes a fourth embodiment of the invention in schematic form. This embodiment D10 is a zoom lens for a camera with an inter-lens shutter including a motor D12 for moving the lens in the forward and reverse directions shown by arrows in FIG. 4 (not mechanically, not shown). ). The switch means D2 has a plurality of settings selected by the operator to move the lens from the initial position defined by the position of the lens at which the switch is operated to the final fixed position setting the focal length of the lens. Control the operation. The present embodiment D10 also includes a position detector D1 for position detection of the lens, memory means D6 for position indication data storage of the lens, and a control means D5, wherein the control means D5 Responds to the setting selection of the switch D2, the position detector means D1, and the memory means D6 for motor operation, wherein the memory means D6 always moves the lens to the final position. Under the conditions that occur during the movement to, the selection of the zoom setting of the switch means operates the motor D12 to drive the lens from the initial position to the final position determined by the content of the memory means D6.

In the fourth embodiment of the invention, the lens driving method is different from the method of driving the lens in the previous embodiment, but the difference is only necessary to change the program. Before describing this embodiment in detail, the lens driving method is first described.

(1) When the mode switching switch 101 is set to the LOCK position and the cam ring 14 is at an arbitrary position different from POS = ø, the zoom motor 5 rotates in the reverse direction to rotate the cam 14 to POS = ø. (Refer to Figs. 29 and 50) and drive in the reverse direction and then stop.

(2) When the mode switching switch 101 is set to the MACRO position and the cam ring 14 is in any position different from POS = "C", the zoom motor 5 rotates in the forward direction to POS the cam ring 14. Drive forward until "C" and stop.

(3) When the mode switching switch 101 is set to the ZOOM position and the zoom motor 5 rotates in the reverse direction, setting the zoom switch 102 to the WIDE position causes the motor to stop and then rotate in the forward direction. If the switch is set to the TELE position, the motor stops when POS = "A". If the switch 101 is set to the WIDE position, the zoom motor 5 continues to rotate in the reverse direction for a while after POS = "1" and then rotates in the forward direction. When POS = "2", the motor 5 stops rotating. If the zoom switch 102 is turned off (set to the neutral position) during the rotation of the zoom motor 5, the zoom motor stops immediately when it rotates in the TELE direction (forward direction). If the motor rotates in the WIDE direction (reverse direction), it stops after rotating in the forward direction for a while.

It is intended to remove the mechanical backlash from the barrel block 1 and the finder so as to eliminate the difference between the stop positions of the motor 5 as these brief rotations rotate in the WIDE and TELE directions, respectively.

(4) If the setting of mode switch 101 is changed from LOCK or MACRO to ZOOM position:

a) if the switch 101 is changed from LOCK to ZOOM position, the motor 5 rotates in the forward direction, and

b) If the switch 101 is changed from MACRO to ZOOM position, the motor 5 rotates in the reverse direction and the switch stops at the last lens position previously changed from ZOOM to LOCK position. An operation when the zoom switch 101 moves from MACRO to ZOOM includes an operation in which the above backlash is removed. Also in this embodiment, since the lens position is detected in stepwise fashion (there are 13 steps from “0” to “C”), the specific lens position value (eg POS = 5) is the only lens. It does not confirm the location. For this reason, when any lens position is restored in the range of POS = "2" to "A", the zoom motor 5 stops at the change point, whereby the lens is returned precisely to a position very close to it, not to the initial position. .

The overall control system of the camera including the above-described control is described in more detail below with reference to FIGS. 51 and 52.

The flowchart shown in FIG. 51 is essentially the same as the flowchart described and described with respect to the previous embodiment except for the processing added between S9 and S12 of the previous three embodiments, so as to implement a unique operation in this embodiment.

POS

A을 테스트한다. 만일 조건이 참이면, S11C는 POS 값을 이동시켜 CPU 또는 RAM에 있는 레지스터(Mpos)에 기억시킨다. 만일 POS〉A 또는 POS〈2일 경우, 처리는 POS 값을 기억시키지 않고 S10C에서 S12C로 점프한다. S10C 및 S11C에서의 처리의 주기적 실행은 프로그램이 S2C로 귀환할 때마다 줌렌즈의 줌범위내에 현재 렌즈위치를 기억시킨다. 바람직한 실시예에서, 초기 Mpos값은 그 위치에 의해 Mpos=2로 세트된다.After POS conversion in S9C, S10C is condition 2

POS

Test A. If the condition is true, S11C shifts the POS value and stores it in a register (pos) in the CPU or RAM. If POS > A or POS < 2, the process jumps from S10C to S12C without storing the POS value. Periodic execution of the processing in S10C and S11C stores the current lens position within the zoom range of the zoom lens each time the program returns to S2C. In a preferred embodiment, the initial Mpos value is set to Mpos = 2 by its position.

[Mode Subroutine of Example 4]

Referring to the flowchart of the mode subroutine in FIG. 52, the CPU of the ZM / C 100 processes each of S150C to S161C similar to S130 to S141 of the previous embodiment, depending on the mode set by the setting of the mode switching switch. Run

(Mpos)인 경우 처리는 S173C로 진행한다.If the mode switching switch 101 is set to ZOOM, the S162C has a wider angle than the focal length step occupied by the cam ring when the result of the POS conversion of S152C is POS &lt; Mpos, i.e., step S11C. Test for closer to termus. If POS <Mpos, processing proceeds to S163C, but POS

If (Mpos), the process goes to S173C.

If POS &lt; (Mpos), S163C tests whether the zoom motor 5 rotates in the forward direction. If so, the process jumps to S165C; Otherwise, S164C reverses the rotation of the motor to operate the motor in the forward direction.

Processing similar to S8C and S9C in FIG. 51 is executed in S165C and S166C. Thereafter, it is determined whether the setting of the mode switching switch 101 is changed from ZOOM to LOCK or MACRO according to the switch scan of S167C and S168C to S165C. If the switch 101 is changed to LOCK, the process returns to S154C; If the switch is changed to MACRO, the process returns to S158C. If the switch position remains in the ZOOM, processing proceeds to S169C.

Mpos인 경우, 처리는 S165C로 귀환한다. 만일 POS=Mpos인 경우, 처리는 S170C로 진행하여 캠링이 기억된 위치로 귀환되었기 때문에 줌모터(5)의 추가 회전을 정지시킨다.S169C tests whether the POS conversion result in S166C is POS = Mpos (that is, returned to the position where the cam ring is stored). POS

If Mpos, the process returns to S165C. If POS = Mpos, the process proceeds to S170C and stops further rotation of the zoom motor 5 because the cam ring has returned to the stored position.

2인 경우, 처리는 플래그(Fwide)를 세트하지 즉각 S2C로 귀환한다.S171C tests whether the result of POS conversion in S166C is POS = 2. If POS = 2, the cam ring stops at the wide angle termus; In this case, when the wide angle terminator flag (Fwide) is set to "1", the process returns to S2C in FIG. POS

If 2, the process does not set the flag and immediately returns to S2C.

If the result of the test in S162C is POS &gt; Mpos, the process proceeds to S173C to test whether the zoom motor 5 is in reverse rotation. If so, processing proceeds to S175C; Otherwise, in the state where the motor 5 rotates in the forward direction, S174C inverts the motor to operate in the reverse direction, and then the process proceeds to S175C.

In S175C and S176C, processing similar to S8C and S9C in FIG. 51 is executed; In S177C and S178C, a process similar to S167 and S168C is executed.

Mpos-1인 경우, 처리는 S175C로 귀환하며, 이 루프(S175C 내지 S179C)는 POS=Mpos-1이 될 때까지 반복실행된다.If the position (mode) of the mode switching switch 101 is set to ZOOM, S179C determines whether the result of the POS conversion in S176C is POS = Mpos-1, that is, the current position of the cam ring is the focal length step of the cam ring. Test if the focal length step is closer to each WIDE terminus than stored in the Mpos of the S11C. POS

In the case of Mpos-1, the process returns to S175C, and these loops S175C to S179C are repeatedly executed until POS = Mpos-1.

When POS = Mpos-1, S180C executes the waiting processing for t msec for the reasons mentioned above; Processing then proceeds to S164C. Thereafter, POS = Mpos is obtained by performing the processing of S164C to S172C. The cam ring then returns to the memorized position after moving the position in the forward direction.

In this embodiment, the TELE subroutine and the WIDE subroutine are the same as each subroutine of the first embodiment. For this reason, no further explanation is necessary.

[Operation of Embodiment 4]

The processing results of S1C to S24C in FIGS. 51 and 52 will be described later. However, description of the processing having the same operation as that of the counterpart of the previous embodiment is omitted.

(1) The battery 106 is connected and none of the winding motor control switch 119, the shutter release button 99, and the zoom switch 102 are operated.

a) If the mode switching switch 101 is in the LOCK position, the first loop is executed as in clause a) in the description of the first to third embodiments.

b) If the mode switching switch 101 is changed from LOCK to ZOOM position, the CPU of the ZM / C 100 exits the above-described first loop and proceeds to S16C.

Since POS = "0", the process proceeds to S19C to forwardly rotate the zoom motor 5, and then branches to the WIDE subroutine (FIG. 52) to process the corresponding processes (S150C, S153C and S162C to S163C, S165C and S166C). ).

Under the condition that the mode switching switch 101 is not moved from ZOOM to LOCK or MACRO in S167C and S168C, the loop processing (S169C, S165C and S168C) causes the cam ring to drive until the motor is POS = Mpos. S170C then stops zoom motor 5, and the process returns to S2C in FIG. 51 through S171C or S171C and S172C. When shipped from the factory, “2” is memorized. Then, when the camera is used for the first time after shipment from the factory, the cam ring 14 is driven from POS = ø to wide-angle terminal (POS = 2) with a focal length of f ₀ .

When the camera is next used, the cam ring is driven to the position where the zoom was made in the last zoom mode (i.e., the position stored in the register (Mpos) in S11C) at POS = ø.

After the CPU of the ZM / C 100 returns to S2C, each processing of the second processing loops S4C, S8C to S12C, S16C, S17C, S20C, S22C, S24C, and S4C does not change any control of the camera. Repeated under conditions. However, since the POS data remains unchanged through some range of the zoom position, the previous zoom position does not always exactly match the stop position obtained under the stop control of the POS data change point based on the Mpos value. But the error is only small; If the cam ring returns to a position very close to the previous zoom position, the zoom position very close to the photographer's choice automatically determines the use of the camera very conveniently.

c) If the mode switching switch 101 is changed from the ZOOM to the MACRO position under the condition that the cam ring 14 is located at the wide angle terminal, the result is the same as in section c) described in the previous embodiment.

d) If the mode switch 101 is changed from MACRO to ZOOM position, the CPU of the ZM / C 100 causes the processing to exit the loop at S12C and proceed to S16C.

Since POS = C, the process of S17C is executed, the process proceeds to S14C, and the zoom motor 5 is instructed to reverse rotation. Processing then branches to the mode subroutine of FIG. 52 and proceeds through S151C to S153C. If the switch 101 is in the ZOOM position, processing proceeds to S162C, S173C, S175C, and S176C. After executing S177C and S178C, the loops S175C, S176C to S179C are repeatedly executed until POS = Mpos-1.

When POS = Mpos-1, S180C causes the motor to continue rotating in the reverse direction for a time of t msec before S164C reverses the rotation of the zoom motor 5, and then rotates in the forward direction. The cam ring 14 stops as soon as it reaches a position corresponding to POS = Mpos from a position corresponding to POS = Mpos-1. When the zoom motor 5 rotates in the reverse direction to drive the cam ring from POS = A to POS = Mpos and stops at POS = Mpos-1 before being forward driven to POS = Mpos, the zoom motor 5 drives the cam ring. The transmission system can be stopped without removing backlash such as gears. However, the processing of S180C and S164C causes the zoom motor 5 to continue to operate in reverse rotation for t msec time of the next detection of POS = Mpos-1 before the rotation of the motor is reversed, and the motor 5 is operated during the forward rotation. The cam ring is returned to a position corresponding to POS = Mpos, and can be stopped at a position to remove the backlash of the forward rotation.

After completion of the processing of S164C, the processing loops of S165C to S169C are repeatedly executed until POS = Mpos; Thereafter, the zoom motor 5 stops at S170C, and processing proceeds to S2C in FIG. 51 through S171C or S171C and S172C. Then, the cam ring 14 stops at the wide angle termus Pos if no zooming operation is performed after the camera is shipped from the factory. If the zooming operation has been previously performed, the cam ring will stop at the previous zoom position stored in Mpos. The zoom position at which the cam ring stops based on Mpos is not always consistent with the previous zoom position, but is very close as described above.

After the CPU of the ZM / C 100 returns to S2C as in section b) above, each loop executed during the aforementioned second loop is repeated under the condition that no switch setting is changed.

If the process proceeds from S162C to S173C because the mode switching switch 101 has been changed from MACRO to ZOOM position, if the loops (S151C to S153C to S158C, S160C, S161C and S151C) correspond to POS &gt; If the mode switching switch 101 is changed to the ZOOM position while the cam ring is positioned at the position, the above processing also takes place. However, in this case, when the processing of S174C rotates the motor in the reverse direction, the zoom motor 5 is rotating in the forward direction.

e) If the mode switching switch 101 is changed from the ZOOM to the MACRO position under the condition that the cam ring 14 stops at POS = A, the same processing described in the above section c) starts at the point where POS = 2 instead of POS = 2. Except for corresponding to A, it will be executed.

f) If the test of S167C, S168C, S177C and S178C in Figure 52 with reference to paragraphs b) and d) indicates that the mode changeover switch 101 has been changed from the ZOOM position to the LOCK or MACRO position, The processing executed is as described in connection with the previous embodiment.

g) If the cam ring is positioned at POS = 1 during the loop processing S151C to S156C and S151C of FIG. 52, the CPU of the ZM / C 100 is changed to S162C and S after the mode switching switch 101 is changed from LOCK to ZOOM. The process proceeds from S153C to S164C through S163C and the motor 5 receives a rotation command in the forward direction.

Subsequent processing is then as described in section d).

(2) If the winding motor control switch is operated while the CPU of the ZM / C 100 executes any of the various loops described above, the result is as described above in connection with the previous embodiment.

POS

4)내의 임의의 제어에서 정지한 후에 CPU가 상술한 제2루프로 귀환될때, 만약 줌위치(렌즈위치)를 표시하는 결과데이타가 S11C에서 레지스터(Mpos)에 기억되면, 캠링의 현재 위치는 후속 줌모드동작동안 초기 줌위치가 된다.(3) When the zoom switch 102 is changed to the TELE side while the CPU of the ZM / C 100 executes the above-described second loop, the result is as described in section (3) of the first embodiment. Cam ring 14 has zoom range (2

POS

When the CPU returns to the second loop described above after stopping at any control in 4), if the result data indicating the zoom position (lens position) is stored in the register (Mpos) in S11C, the current position of the cam ring is followed. It becomes the initial zoom position during the zoom mode operation.

POS

A)내의 임의의 위치에 정지한 후에 CPU가 상술한 제2루프로 귀환한 경우, 줌위치를 표시하는 POS 데이타는 S11C에서 레지스터(Mpos)에 기억된다.(4) If the zoom switch 102 is changed to the WIDE side while the CPU of the ZM / C 100 executes the second loop, the result of the processing to be executed is described in section (4) of the first embodiment. Same as If the cam ring 4 is in the zoom range (2)

POS

When the CPU returns to the second loop described above after stopping at an arbitrary position in A), POS data indicating the zoom position is stored in the register Pos in S11C.

(5) If the mode switching switch 101 is changed from ZOOM to LOCK and back to ZOOM or from ZOOM to MACRO and back to ZOOM, the cam ring 14 moves as shown in FIG.

POS

A)는 CPU 또는 RAM에 있는 레지스터(Mpos)에 기억된다. 그러나 이 실시예는 배터리(106)가 카메라로부터 제거될 때 데이타를 보존하도록 E²PROM과 같은 비소멸성 메모리에 기억되도록 구성될 수도 있다.In the fourth embodiment, the data 2

POS

A) is stored in a register (pos) in the CPU or RAM. However, this embodiment may also be configured to be stored in a non-volatile memory such as an E ² PROM to preserve data when the battery 106 is removed from the camera.

The various embodiments described above use a telephoto terminator switch as a reference to emphasize that backlash is eliminated when the rotation of the motor changes from reverse to forward. However, the invention may also be configured to eliminate backlash when the rotation of the zoom motor 5 changes from forward to reverse using wide angle minus as a reference.

Also in the first and fourth embodiments, the power source of the lens can be set continuously instead of just steps, such as f2 to f7; Other types of position detectors, such as potentiometers that detect continuous values, may be used. The extra time of t msec in which the zoom motor operates in the reverse direction to ensure backlash removal has an absolute value dependent on practical conditions such as the precision of the mechanical coupling between the motor and the cam ring, ie the actual amount of focal length step. The stop time of t'msec, which is the time that the cam ring pauses between stepping from one focus distance step to the next in the second to fourth embodiments, provides more time for determining whether the photographer has a correctly configured subject or It relies on a design that takes into account the desire for fast scanning of the zoom range.

Claims (17)

A zoom lens system driving apparatus for a lens shutter type camera, the zoom lens system driving apparatus comprising: a zoom lens system; A reversible motor operable to move the lens system along the optical axis in the forward and reverse directions between the wide-angle and telephoto end positions spaced apart to determine the focal length of the zoom lens system; Means for determining the movement direction when the zoom lens system moves to any one of the terminal positions; First control means for rotating the motor to move the zoom lens system from the initial position to the wide-angle termination position direction, the first control means being executed corresponding to the discriminating means; And second control means for rotating the motor to move the zoom lens system from the initial position to the tele-terminus position direction, the second control means being executed corresponding to the discriminating means; Wherein the first and second control means are separate and independent logic means controlled by a central processing unit for driving the zoom lens system in a different control manner toward the wide angle and telephoto end positions, respectively. A zoom lens system driving apparatus for a lens shutter camera. The zoom lens system driving apparatus according to claim 1, wherein the second control means includes means for bringing forward rotation of the zoom motor. The zoom lens system driving apparatus according to claim 1, wherein the second control means includes means for determining whether the zoom switch is in a TELE position. 4. The zoom lens system driving apparatus according to claim 3, wherein the second control means further comprises means for stopping the rotation of the zoom motor when the zoom switch is not in the TELE position. 2. The apparatus of claim 1, wherein the second control means comprises: means for determining whether the zoom lens system moves to the telephoto minus position by one focal length step; And means for determining whether the zoom lens system is further moved to the telephoto minus position. 2. The apparatus of claim 1, wherein the second control means determines whether the lens system stops at the telephoto end position and determines whether to continue driving the motor when the lens system does not reach the telephoto end position. A zoom lens system driving apparatus, characterized in that consisting of means. The zoom lens system driving apparatus according to claim 1, wherein the first control means includes a means for bringing reverse rotation of the zoom motor. The zoom lens system driving apparatus according to claim 1, wherein the first control means includes means for determining whether the zoom switch is in the WIDE position. 9. The zoom lens system driving apparatus according to claim 8, wherein the first control means further comprises means for stopping the rotation of the zoom motor when the zoom switch is not in the WIDE position. 2. The apparatus of claim 1, wherein the first control means comprises: means for determining whether the zoom lens system moves to the wide-angle terminal position by one focal length step; And means for determining whether the zoom lens system is further moved to the wide angle minus position. 2. The apparatus of claim 1, wherein the first control means determines whether the lens system stops at the wide angle termination position and whether to continue driving the motor when the lens system does not reach the wide angle termination position. And a means for determining the zoom lens system driving apparatus. A zoom lens system driving apparatus for a lens shutter type camera which is movable along a optical axis in a predetermined direction and a direction opposite to the predetermined direction by a driving source to change the focal length of the zoom lens system, wherein the zoom lens system driving apparatus comprises: a first wide angle First control means for controlling the drive source during the zoom operation of the lens system to drive the lens system toward a terminal position; Second control means for controlling the drive source during the zoom operation of the lens system to drive the lens system toward a second telephoto end position; Wherein the first and second control means are separate and independent logic means controlled by a central processing unit for driving the zoom lens system in a different control manner toward the wide angle and telephoto end positions, respectively. A zoom lens system driving apparatus for a lens shutter camera. The method of claim 12, wherein the first control means further comprises means for determining whether to move by one focal length step toward the wide-angle terminal of the zoom lens system and whether or not to further move the lens system. Apparatus for driving a zoom lens system. 13. The zoom lens system driving apparatus according to claim 12, wherein the first control means includes means for determining whether the lens system is stopped at the hollow end position. 13. The zoom lens system driving apparatus according to claim 12, wherein the second control means includes means for determining whether to stop at the telephoto end position of the lens system. The method of claim 12, wherein the first control means further comprises means for determining whether to move by one focal length step toward the wide-angle terminal of the zoom lens system and whether or not to further move the lens system. Zoom lens system driving device. The zoom lens system driving apparatus of claim 12, wherein the driving source comprises a reversible motor.

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