DE3745159B4 - Optics setter for camera - has coarse and fine adjusters for rapid focussing and magnification - Google Patents

Abstract

A control unit (15,18) subdivides the extent of the adjustment of the optical system in a first adjustment size, in order to adjust the optical system with the first adjustment arrangement and a second adjustment size, in order that the optical system is to be adjusted with the second adjusting arrangement. Thus the adjustment of the optical system is carried out with the first adjustment arrangement on the first adjustment size and with the second adjustment arrangement on the second adjustment size.

Description

The The invention relates to a device for a camera and a camera.

A Facility for a camera having the features of the preamble of claim 1 is by document US-39 72 056 A known. This known device has a drive device in Shape of a motor that drives a first actuator. This first adjusting device comprises a drive shaft and a Worm wheel that meshes with a thread on a lens barrel, the component the optical unit of the camera in the form of its taking lens is. Upon rotation of the drive shaft by means of the engine is moves the taking lens along its optical axis moved to this way, the focus or distance adjustment of the taking lens. In this case, the first adjusting device and thus controlling this movement by means of a control device, which acts on the motor and turns it off when the taking lens has covered the required movement distance and thus the desired Takes position. The known device also has a second Actuator, which has its own drive device in the form associated with an engine. By means of this adjusting device is the optical unit also in the direction of its optical axis for the purpose of zooming. It is understood that not necessarily by means of first and the second actuator all lenses of the taking lens at the same time be moved in the direction of the optical axis, but in the case of the first adjusting device, if appropriate, only those Lens members provided for the purpose of focusing and, in the case of the second actuator, only those if necessary Lens members that are movable for the purpose of zooming.

The by the document US-39 72 056 A known device further a second signal forming device for forming a focal length signal on, wherein the second signal-forming device by a switch is formed. The formed by the second signal forming device Focal length signal directly controls the first actuator to adjust the focal length of the optical unit in this way. A dependency the focal length signal from the object distance is not intended. This can result in that when using the second signal forming device, the focal length signal according to a Tele mode selected is and for this telephoto mode the object distance is too low, a erroneous recording takes place.

By the document DE-30 19 671 A1 is an adjusting device for an optical System of a camera known in which the optical system for the purpose the focusing moved on the one hand by means of an adjusting device can be and in addition can be moved manually, with a coarse adjustment while the a comparatively large one Distance covered is done manually and by means of the actuator only the fine adjustment takes place.

The Document DE-29 02 742 A1 discloses a device for a camera a signal forming device for forming a focal length signal. This signal-forming device comprises a memory in which stored other focal length limits for a selected depth of field are. These limits are determined by means of a comparator compared with the actual values of the focal length setting. If necessary a further focal length signal is formed by means of a comparator, due to which the focal length is changed. Neither the limits the focal length in the memory, nor the output signals of the comparator, nor the output of the comparator are dependent formed by the object distance.

Of the Invention is the object of the generic device to further develop such that erroneous recordings prevented is, and further to provide a camera with such a device.

These The object is achieved by the Device according to claim 1 and the camera according to claim 14 solved.

advantageous Embodiments of the invention are characterized in the subclaims.

embodiments The invention are illustrated in the drawings and are in following closer explained. Show it:

1 a first embodiment of an adjustment device for an optical system of a camera;

2 in exploded view and perspective view essential elements of the embodiment according to 1 ;

3 a part of a control circuit of the embodiment according to the 1 and 2 ;

4 a perspective view of elements of an adjustment for an optical System of a camera according to a second embodiment, wherein 4 for the time before the commencement of a tripping operation;

5 a perspective view of further elements of the second embodiment according to 4 ;

6 a block diagram of a circuit of the second embodiment;

7 a circuit diagram of essential circuit parts of a central unit after 6 ;

8 (A) and 8 (B) Schematics that after the internal structure of circuits 6 demonstrate;

9 a flow chart illustrating the function of the circuits according to the 6 to 8th explains;

10 to 12 perspective views of elements of a recording mode switching device and a search device of an adjusting device for an optical system of a camera according to a third embodiment;

13 to 16 perspective views of other elements of the adjusting device according to the third embodiment;

17 a schematic front view of some in the 13 to 16 shown elements;

18 a sectional view for explaining essential elements of a first and a second adjusting device of the third embodiment of the adjusting device;

19 a schematic diagram of a control circuit for controlling a in the 13 to 16 shown electromagnets; and

20 a flowchart for explaining the control of the adjusting device according to the third embodiment.

In the following, the details of embodiments of adjusting devices for adjusting the optical system of fixed focal length cameras will be described with reference to the drawings. At an in 2 A lens adjustment lens changing operation, a lens shift operation for focusing, a film transporting operation and a shutter driving operation are performed by a single driving device, the timing of these operations being performed by a single electromagnetic drive (with an electromagnet). The camera is equipped with a conversion lens, which is pivotally mounted on an axis perpendicular to the axis of the lens barrel and accommodated parallel to the lens barrel. Immediately after completion of the long focal length photographing, the lens barrel is automatically retracted by the conversion lens and locked in the most retracted position.

The 1 schematically shows the configuration of the apparatus for adjusting the optical system according to a first embodiment. To 1 is a lens barrel 1 displaceable in a desired position. The lens barrel 1 forms together with other, not shown elements the optical system of a camera. At the back of the tube 1 is integrally hereby a sawtooth ratchet rack 1a designed for engagement with a locking member described below 12 is arranged. A screw shaft 2 is designed such that it threadedly with a threaded member, not shown, with internal thread on the tube 1 moved forward in the direction of an arrow f1. At the propeller shaft 2 is a gear 3 attached. To the gear 3 becomes the rotation of a differential wheel 4 which, as described below, serves as a control for controlling a work start timing. To the differential wheel 4 is about a wave 5 , Reduction wheels 6 and 7 and a power transmission switching device 8th the rotation of an engine 9 transferred, which forms the drive device in the described embodiment. The screw shaft 2 , the gear 3 and the threaded member on the tube 1 together form an adjusting device for moving or moving the tube 1 , and thus the lens.

The differential wheel 4 is about a device 10 with an adjustment device 11 for moving and adjusting the locking member 12 connected. The adjustment device 11 is for moving the locking member 12 formed parallel to the lens displacement direction to a predetermined extent and for setting the same in a predetermined blocking position. The adjustment device 11 is, for example, as shown in FIG 2 designed, which shows the structure of the first embodiment in more detail.

The locking member 12 serves to stop the movement of the tube 1 in the direction of the arrow f1 by the engagement on the ratchet 1a at the tube 1 and thus forms a barrier means for limiting movement of the optical system. The locking member 12 is on a support part 13 mounted for pivotal movement in the direction of an arrow f2 about an imaginary axis, which is lowered extends right to the drawing plane. The carrier part 13 is via a mechanical connection 14 or directly with the adjustment device 11 connected. Through the adjustment device 11 is the locking member 12 by a very short distance for its adjustment in the direction of an arrow f3 movable. The adjustment device 11 is about the device 10 through the differential wheel 4 operated, which serves as a release device and as a device for controlling a Arbeitsan start time. Thereafter, the operation of the adjusting device 11 via a transmission device 17 through a work control 15 completed.

The work control 15 serves to control the time at which the locking member 12 with the ratchet 1a is engaged, as well as the timing for completing the movement of the adjusting device 11 in the direction of the arrow f3. The work control 15 is each about transmission devices 16 respectively. 17 with the locking member 12 and the adjustment device 11 connected. In the specific embodiment of the embodiment described below is the work control 15 by an electromagnetic actuator, namely an electromagnet 32 educated.

A control circuit 18 is used to calculate a required distance of movement or extent to which the tube 1 to move to control the work control 15 according to the calculation result and for controlling start-up, stop and counter-rotation of the engine 9 , A motion magnitude detector 19 used to determine the sizes of the engine 9 caused movements of the propeller shaft 2 and the adjustment device 11 and for generating a signal, that of the control circuit 18 is supplied. In this particular embodiment, the movement distance or the amount of displacement of the tube is 1 by the action start timings of the differential gear serving as the start timing control means 4 and the locking member 12 but not by the times of starting and stopping the engine 9 certainly.

From the control circuit 18 the lens barrel movement path is divided into a first and a second displacement distance. The control circuit 18 controls the adjustment device 11 and the locking member 12 by applying a first signal for the first displacement distance and a second signal for the second displacement distance to the work control 15 , In this way the tube becomes 1 moves under this control to a predetermined extent. The work control 15 and the control circuit 18 thus form together with other elements, the control device of the article explained here.

The work start times of the adjustment 11 and the screw shaft 2 be through the differential gear 4 which acts as a control for controlling the start times. That is, when the driving force of the engine 9 to the wave 5 is transmitted, actuates the differential gear 4 first about the device 10 the adjustment device 11 and then on the adjusting device 11 the locking member 12 to move in the direction of the arrow f3 (parallel to the direction of movement of the tube 1 ) to a small extent. Then, after the lapse of a predetermined period of time by the rotation of the screw shaft 2 the tube 1 moved in the direction of the arrow f1.

The smallest displacement unit, by the screw shaft 2 the actuator is effected, is determined by the pitch of the sawtooth ratchet teeth. The smallest displacement unit is set in advance to a value ten times as large as the smallest unit of movement of the adjustment device 11 , Therefore, the tube through the screw shaft 2 moved by a distance much larger than the moving distance of the locking member 12 is. The movement distance of the locking member 12 is through the adjustment device 11 certainly. The beginning of the operation of the adjustment 11 is through the differential gear 4 certainly. The completion of the operation of the Einstellvorrichtun 11 is through the work control 15 certainly. That is, the amount of movement of the locking member 12 and the tube 1 are determined by the working time of the work control 15 certainly.

The 2 is an exploded perspective view showing, by way of example, details of the structure of the embodiment. In the 2 are all with the schematic representation in 1 matching parts with the same reference numerals.

To 2 is the lens barrel 1 with the ratchet 1a fitted to a flange 1A of the tube 1 is attached. At the flange 1A is a ring 1b educated. In the ring 1b is a threaded ring as a threaded element 1c for threaded engagement with the screw shaft 2 used. At the inner peripheral surface of the ring 1b is formed parallel to the axial direction of an axial groove, not shown. An axial rib 1d extending axially and from the outer circumferential surface of the threaded ring 1c protrudes, is slidably inserted into the axial groove. The thread in 1c is at he inner peripheral surface with a thread for threaded engagement with the screw shaft 2 Mistake. Furthermore, the threaded ring 1c with a flange part 1e provided with a diameter larger than the inner diameter of the ring 1b is and at the front end of the threaded ring 1c is trained. With this at the front end of the threaded ring 1c formed flange part 1e becomes the threaded ring 1c in the ring 1b introduced from its front end. Therefore, when advancing the tube 1 in a manner described below, the threaded ring 1c out of the ring 1b pulled out and on to the propeller shaft 2 to be moved forward after the tube 1 through the locking member 12 was stopped.

An arm 20a a shutter control lever 20 is by a spring 21 against the front face of the threaded ring 1c pressed. This is done by the spring 21 the threaded ring 1c in the ring 1b pressed into it. Therefore, during the forward movement of the tube 1 the threaded ring 1c not out of the ring 1b pulled out. However, after the tube 1 through the locking member 12 has stopped, the threaded ring 1c continue to move forward and out of the ring 1b stepping out.

The sash lever 20 is rotatable on a retaining pin 1f stored at the tube 1 is appropriate. The feather 21 is on the retaining pin 1f fitted and designed so that they the sash lever 20 to a counterclockwise rotation biased.

Parallel to the screw shaft 2 is on the flange 1A of the tube 1 near the retaining pin 1f a pen 1g appropriate. At this pin 1g is rotatably mounted an unillustrated wing opening lever, which belongs to a shutter wing actuator, not shown. In the flange 1A of the tube 1 is a window 1h educated. At the inner edge of the window 1h is. a lead 1i educated. The window 1h and the lead 1i are related to an attachment lens support frame not described in detail here. The gear 3 is on the propeller shaft 2 attached.

As shown in 2 contains the differential gear 4 following elements: a driven part 22 which is movable and that with an external toothing for combing with the gear 3 is a driving part 23 for transmitting its rotation with a predetermined time delay to the driven part 22 and for operating the adjusting device 11 before transmitting the rotation to the driven part 22 and a spring 24 that's the driving part 23 to the part 22 pushes down. The driven part 22 has one constantly with the gear 3 meshing wheel part 22a and a face cam part 22b which is helical.

At the cam part 22b are a helical cam surface 22c and a stop 22d educated. The driving part 23 has a lead 23a , which abuts against the cam surface, a coupling part 23b that with the gear 6 is engaged, and a plane perpendicular to the axial direction flat surface 23c , where a driver 25c attacks, that of the aforementioned device 10 equivalent. The driving part 23 is thus designed so that it together with the gear 6 rotates and in the axial direction of the gear 6 is movable away, as the gear 6 is provided with an axial groove in the peripheral wall of a in the gear 6 formed axial opening is formed and in the coupling part 23b is used so that the axial movement of the coupling part 23b is possible. The gear 6 and the driving part 23 be with each other by the insertion of the coupling part 23b coupled in the axial groove. The axial length of the coupling part 23b is greater than the axial movement distance of the driving part 23 , Therefore, the coupling part 23b never out of the axial opening of the gear 6 pulled out.

The gear 6 is via the power transmission switching device 8th and the gear 7 through the engine 9 driven (see 1 ). Further, the driven part to be moved 22 and the driving part 23 stored separately on mutually different axes, although this is in 2 not shown. The part 22 is attached to its axis while the driving part 23 is loosely placed on its axis.

The also in 1 shown motion quantity detector 19 for determining the amount of movement is in this case with a coding plate 19a that together with the gear 6 turns, and a photocell 19b constructed according to one of the coding plate 19a trained black and white pattern gives off pulses.

Next, using the 2 the parts of the adjustment 11 that with the driving part 23 of the differential gear 4 communicates, and parts of in 1 shown device 10 described.

To 2 is near the driving part 23 a dental sector arm 25 arranged around an axis 25a is pivotable, which is perpendicular to the propeller shaft 2 extends. At the dental sector arm 25 is at a distance from the axis 25a parallel to this a pen 25b appropriate. The pencil 25b abuts against a laterally projecting part 26a a slider part 26 for holding and shifting the locking member. Further, on the dental sector arm 25 the driver 25c attached, which is parallel to the pin 25b extends. According to the preceding embodiments, the driver abuts 25c against the flat surface 23c of the driving part 23 , The slider part 26 is about three guide pins 26b . 26c and 26d stored for holding and the sliding guide on a component of the camera body. Between the outer surface of the slider part 26 and the surface of the Component of the camera body or the like is a on one of the pins 26b to 26d attached spring 27 pressed together. This is done by the spring 27 the slider part 26 constantly in the to the propeller shaft 2 biased parallel direction of the arrow f4 to the front of the camera. As a result, the pen will also 25b on the dental sector arm 25 upwards according to 2 biased. The driver 25c is due to the force of the spring 27 against the flat surface 23c of the driving part 23 pressed. Furthermore, by the spring 27 over the pen 25b the dental sector arm 25 to a counter-clockwise rotation about the axis 25a biased. However, because the flat surface 23c of the driving part 23 at the driver 25c attacks, the movement of the Zahnsektorarms 25 prevents this does not move, if not the driving part 23 moved axially.

The slider part 26 is with a pen 26e for the pivotable storage of the locking member 12 Mistake. The pencil 26e is rotatable in an opening 12b inserted in the lower end portion of the locking member 12 is formed. On the pen 26e is a spring 28 put on the locking member 12 to turn clockwise according to 2 biases.

Close to the outer periphery of the Zahnsektorarms 25 is a latch part 29 arranged for determining the rotational angular position of the Zahnsektorarms 25 is trained. The latch part 29 has one to the axis 25a of the dental sector arm 25 parallel axis 29a and is mounted on a stationary component such that it is about the axis 25a is pivotable. The latch part 29 is by a spring 30 biased to move in the direction of the arrow. At the front end of the pawl part 29 is a pawl for engaging the teeth of Zahnsektorarms 25 educated. When the pawl between the teeth of Zahnsektorarms 25 engages, its pivoting counterclockwise about the axis 29a through the pawl part 29 prevented, even if the arm is pivotable.

At the axis 29a there is an arm 29b in front. The feather 30 presses the arm 29b against a pen 31a that is on a second lever 31 is appropriate. The second lever 31 is designed such that by pivoting counterclockwise against the force of the spring 30 the engagement of the pawl part 29 into the teeth of the dental sector arm 25 is brought about.

As described above, the adjustment device includes 11 for that to the propeller shaft 2 parallel movement of the locking member 12 and its setting in a desired blocking position the Zahnsektorarm 25 , the pencil 25b and the driver 25c working with the dental sector arm 25 form a unit, the slider part 26 , the feather 27 and the pawl part 29 for determining the rotational angle position of the Zahnsektorarms 25 , The carrier part 13 and the mechanical connection 14 are not important. In the case of an electrical configuration of the adjustment 11 However, they become essential. Furthermore, in the embodiment according to 2 the device 10 that the adjusting device 11 with the differential gear 4 coupled, by the driver 25c formed as a unit with the dental sector arm 25 is trained.

The device parts after 1 to which the work control 15 , which is an electromagnet or an electromagnetic actuator, and the transmission devices 16 and 17 for connecting the work control 15 with the locking member 12 and the adjustment device 11 counting are designed as follows:
According to the embodiment 2 the electromagnet acts 32 as a work control 15 , The magnet 32 is with a plunger 32a provided in the energization of the magnet in the direction of an arrow f5 and in the de-energizing or switching off of the magnet 32 by the spring of a first lever 33 moved in the direction of an arrow f6.

The transmission devices 16 and 17 are through the first lever 33 as well as through the second lever 31 and a third lever 34 formed by the first lever 33 are movable. The first lever 33 is mounted on a component of the camera so that it is about an axis 33a is pivotable, and has four arm parts, namely a first to fourth arm part. At the front end of a first arm part 33b is a pen 33c for the connection with the plunger 32a attached. At the front end of a second arm part 33d is a pen 33e for connection to one on the second lever 31 fastened first pin 31b attached. A third arm part 33f comes with an arm part 34a the third lever 34 engaged. A fourth arm part 33g grabs a pen 40b clicking on a shutter release button 40 is attached. The handle 40 is a part of a shutter control device. By one on the fourth arm part 33g attached spring 35 becomes the fourth arm part 33g constantly to a clockwise rotation about the axis 33a biased. Therefore, if the magnet 32 is not excited and as a result the plunger 32a is not moved in the direction of the arrow f5, is determined by the force of the spring 35 the first lever 33 clockwise around the axis 33a pivoted.

The second lever 31 that together with the first lever 33 the transmission device 16 has an axis 31c that is perpendicular to the propeller shaft 2 extends. The lever 31 is mounted on a component of the camera so that it is about the axis 31c is pivotable. The second lever 31 is with two arm parts 31d and 31e provided, extending from the axis 31c extend outward and at the front ends pins 31a and 31b are attached. The pencil 31a grabs the arm 29b of the latch part 29 at. The other pen 31b grabs the pen 33e of the second arm part 33d of the first lever 33 at.

The third lever 34 that together with the first lever 33 the transmission device 17 has a hub 34c that with one to the propeller shaft 2 parallel axial bore 34b is provided. The third lever 33 is pivotally mounted on a component with a pin (not shown) inserted into the axial bore 34b the hub 34c is introduced. The third lever 34 has two arms 34a and 34d , The arm 34a engages the third arm part 33f of the first lever 33 at. At the front end of the other arm 34d is a pen 34e attached. The pencil 34e engages an arm part 12c of the blocking member 12 at.

The camera according to this embodiment includes the control circuit 18 , Detectors, etc., after 3 designed as follows: The circuit arrangement according to 3 contains all the circuits and detectors that control the in 2 shown magnets 32 affect. A switch 101 to 3 is closed when a shutter release button, not shown, is depressed to a first stop. A switch 102 is closed only for photographing with a large focal length. A switch 103 closes when the release button is depressed to a second stop. The 3 shows voltage high resistance 105 to 107 , Inverter 109 to 111 . 128 and 129 , Cache 113 to 115 with RS flip-flops or the like, a known distance measuring circuit 116 , Analog / digital or A / D converter 117 and 122 , Digital comparator 125 to 127 , AND-links 103 and 104 , a known Lichtmeßschaltung 121 , an OR gate 138 , also in the 1 and 2 shown motion quantity detector 19 and a transistor 139 for turning on and off the excitation current for the magnet 32 , The A / D converter 117 gives a binary distance reading and forms together with the distance measuring circuit 116 a first default device. The other A / D converter 122 is worth a binary light meter reading. A computing device in the form of a decoder 18 calculates the extent to which the shutter blades must be opened to obtain a suitable exposure from the binary photometry signal and two output signals from the decoder 118 by dividing a calculated value for the required moving distance of the objective or optical system into two shift values of upper two bits and lower two bits of the required travel distance, respectively. The decoder 118 thus generates a signal for obtaining the correct exposure. A counter 119 counts the pulses from the motion quantity detector 19 , An address register 140 stores according to the first output of the decoder 118 a reference value for application to the digital comparator 125 , A block register 141 stores according to the second output of the decoder 118 a reference value for application to the digital comparator 126 , An exposure register 142 stores according to the third output of the decoder 118 a reference value for application to the digital comparator 127 , The address register 140 stores the upper two bits of the value for the required travel distance (representing a larger displacement distance). The block register 141 stores the lower two bits of the required travel distance value (for a smaller shift distance). A motor control circuit 143 controls the supply of the motor 9 according to output signals of the buffer 115 and the digital comparator 127 ,

The functions of the respective parts of the camera according to this embodiment will be described below with reference to FIGS 2 and 3 described. Before starting to take pictures (or when the camera is not in use), the tube is stationary 1 in his most withdrawn position, in which he is held. Under these conditions, the threaded ring 1c in the ring 1b at the tube 1 pushed in, with only the flange 1e out of the ring 1b protrudes.

The lead 23a of the driving part 23 of the differential gear 4 abuts against the highest point a of the cam surface 22c of the driven part 22 , so that the driving part remains at rest. The driver 25c of the dental sector arm 25 is by the spring 27 against the flat surface 23c of the driving part 23 pressed. This is due to the upward opposing force of the driving part 23 the dental sector arm 25 kept in its original position. As the plunger 32a is in the off state, the latch part 29 and the second lever 31 through the spring 35 each held in the left or right pivoted position. In this case, the driving part is 23 in the highest position 2 , Therefore, also stands the driver of Zahnsektorarms 25 in his highest position. As a result, the pen becomes 25b through the driving part 23 pushed down to its lowest position. Therefore, the slider part remains 26 by pushing down with the pen 25b in its lowest position according to 2 , in its original position. The feather 27 is most compressed. Therefore, the locking member remains 12 in its original position. He receives on the arm part 12c of the locking member 12 attacking pen 34e the third lever 34 from the first lever 33 no right according to 2 directed biasing force on the arm part 12c could work. As a result, the locking member 12 through the spring 28 in a position spaced from the ratchet 1a held.

Meanwhile, the serving as a work control magnet 32 energized. Therefore arises on the plunger 32a no force in the direction of arrow f5 2 , The first lever 33 is by the force acting in the direction of the arrow of the spring 35 biased.

In the shutter control device, the sash lever is 20 on his arm 20a through the spring 21 in the lowest position 2 held, because the threaded ring 1c not very forward from the ring 1b at the tube 1 protrudes. Therefore, the other arm 20b of the sash lever 20 in accordance with 2 held highest position. In this way, the closure remains closed by its shutter wings, not shown. Meanwhile, of course, is the engine 9 silent (see 1 ). When the camera is set from this state to a state for photographing with a long focal length, in this embodiment, the various parts work as follows.
When shooting with the large focal length is selected by operating a shooting mode dial button before shooting, the in 3 shown switches 102 closed. Thereafter, when the shutter release button, not shown, is depressed until the first stop, the other switch becomes 101 to 3 closed, with the camera aimed at an object to be recorded. It is from the inverter 109 delivered an output signal. In response to this gives the cache 113 an output signal.

On the from the cache 113 output signal output lead the distance measuring circuit 116 and the light measuring circuit 121 in a known manner, the measuring operations. The results of these measurements are each by the A / D converter 117 and 122 converted into binary or digital values.

The binary distance measurement is sent to the decoder 118 created. The computing device in the form of the decoder 118 forms a distance measurement corresponding to the required movement distance and the Lichtmeßergebnis corresponding control variable for the shutter blade adjustment. At the same time, the required moving distance is divided into a large shift value and a small shift value according to a predetermined method. Then the decoder gives 118 a first output signal representing the determined value of the small shift value. The first output signal becomes the address register 140 fed. Further, the decoder outputs 118 a second output signal representing the large shift value. The second output signal becomes the block register 141 fed.

At this time, according to the above, the switch 102 closed. Therefore, the inverter gives 110 an output signal. Then the cache is. 114 also an output signal as the input signal of the decoder 118 from. The desk 102 , the inverter 110 and the cache 114 form a second default device. The input signal becomes the decoder 118 set to a calculation process for photographing with a large focal length. As a result, the decoder generates 118 a signal for a long moving distance required for photographing with a long focal length, and supplies this signal to the block register 141 to. Meanwhile, the address register 140 regardless of whether to shoot with a large focal length or with a short focal length, a signal is supplied which represents a very short shift value required for shifting the lens a very short distance within the entire travel distance by which the lens is displaced got to. This signal is in the address register 140 stored as a reference for a very short shift value.

When the release button is depressed down to the second stop, the buffer enters 115 an output signal through which the AND gate 103 is switched through. (At this time there is no output signal from the digital comparator 125 in front. Therefore, the inverter gives 128 As a result, the OR gate 138 an output signal. This turns the transistor 139 switched through, so that the magnet 32 is excited. By exciting the magnet 32 becomes the plunger 32a in the direction of the arrow f5 2 drawn. Therefore, the first lever 33 against the force of the spring 35 counterclockwise around the axis 33a pivoted. As a result, the pen becomes 31a of the second lever 31 lowered. By the force of the spring 30 becomes the pawl part 29 from the teeth of the dental sector arm 25 pivoted away, so that this is pivoting. Meanwhile, the arm part hits 33f of the first lever 33 the arm 34a the third lever 34 forward according to 2 , This will be the third lever 34 clockwise around the axial bore 34b pivoted. The pencil 34e pushes against the arm 12c of the locking member 12 so that this counterclockwise after 2 around the axle hole 12b is pivoted. Therefore, the latch comes at the front end of the locking member 12 with the ratchet 1a at the tube 1 engaged. This will be the tube 1 temporarily set.

Thereafter, in response to the output of the buffer 115 the motor control circuit 143 the forward rotation of the engine 9 , so that via the power transmission switching device 8th the gear 6 clockwise 2 rotates. If the gear 6 Turning clockwise, the driving part rotates 23 also in a clockwise direction, so that its projection 23a from the highest point a to a point b on the cam surface 22c of the driven part 22 slide down. This moves the driving part 23 axially to the driven part 22 without the driving part 23 while being driven in rotation.

When the driving part 23 axially to the driven part 22 begins to move, the force gradually decreases, with the driver 25c upwards according to 2 was pushed (namely, the spring 21 pushing down force). Then the spring begins 27 expand, so that the slider part 26 upwards according to 2 (towards the front of the camera). This starts the slide part 26 to move in the direction of the arrow f4. This will also be against the upper part of the projection 26a of the slider part 26 pressed pen 25b raised. As a result, the dental sector arm begins 25 counterclockwise to 2 around his axis 25a to pan.

Here are the movement of the slider part 26 in the direction of the arrow f4 and the rotation angle of the dental sector arm 25 from the motion large detector 19 detected in the form of electrical pulse signals. Therefore, the detector gives 19 to 3 a pulse signal from the movement amount of the slider part 26 corresponds and leads it to the input terminal of the digital comparator 125 to. The digital comparator 125 Outputs an output signal when the value of this pulse signal becomes equal to a reference value. The output signal of the digital comparator 125 is located on the inverter 128 at. As a result, the output of the inverter 128 off. As a result, the AND gate 136 blocked. This also eliminates the output signal of the OR gate 138 , This will be the transistor 139 switched off so that the magnet 32 is excited.

Therefore, the plunger 32a through the spring 35 pulled out in the direction of the arrow f6. After that, the first lever pivots 33 clockwise around the axis 33a , The second lever 31 pivots clockwise around the axis 31c , The arm 29b of the latch part 29 is from the pen 31a of the second lever 31 pushed up. The latch part 29 pivots counterclockwise around the axis 29a so that the front end with the teeth of the Zahnsektorarms 25 engages. As a result, the pivoting movement of the Zahnsektorarms 25 stopped. Accordingly, the rise (the movement in the direction of the arrow f4) of the pen also ends 25b on the dental sector arm 25 , This also causes the movement of the slider part 26 completed. As a result, the locking member 12 set in a position which is away from the initial position by a distance corresponding to an angle to the Zahnsektorarm 25 was panned.

If the magnet 32 is depressed, pivots according to the clockwise movement of the first lever 33 the arm part 33f thereof. Therefore, by the force of the spring 28 the third lever 34 counterclockwise around the axial bore 34b pivoted. The feather 28 also causes the pivoting of the locking member 12 clockwise around the axial bore 12b , Thereby, the pawl at the front end of the locking member 12 from the ratchet rack 1a solved, whereby the tube is ready for its forward movement.

If, after these operations, the lead 23a of the driving part 23 the point b of the cam surface 22c of the driven part 22 achieved, can be the driving part 23 no longer move axially. Then the driving part begins 23 and the driven part 22 to rotate together in a clockwise direction. As a result, over the gear 3 the screw shaft 2 turned. This is done by the screw shaft 2 at the tube 1 a driving force exercised. The projection moves 1i forward, where is lifted by the locking state of the tube.

During the forward movement of the tube 1 at the screw shaft 2 becomes the extent of rotation of the propeller shaft 2 in the form of pulses from the motion quantity detector 19 detected. This pulse output signal is applied to the input of the digital comparator 126 created. If the number of this way to the digital comparator 126 applied pulses one in the block register 141 stored reference pulse number is reached, gives the digital comparator 126 an output signal. As a result, the AND gate 104 connected through. This turns the transistor 139 turned on, so that the magnet 32 is excited. If the magnet 32 is energized in this way becomes the plunger 32a retracted and pulled in the direction of the arrow f5. Therefore, the first lever 33 against the force of the spring 35 pivoted counterclockwise. This pivoting of the first lever 33 causes the third lever 34 around the axial bore 34b pivots clockwise. This will knock the pen 34e the arm 12c of the locking member 12 so that this around the axle hole 12b pivots counterclockwise. Then it engages the front end of the locking member 12 trained latch between the teeth of the ratchet rack 1a , So that the Forward movement of the tube 1 is stopped. At this time is at the pawl part 29 the pressure by the first lever 33 canceled. However, since the pawl part 29 with the teeth of the dental sector arm 25 it is not engaged by the force of the spring 30 pivoted clockwise.

Ending the forward movement of the tube 1 means that the operation for increasing the focal length and the focusing operation are completed.

After completing the forward movement of the tube, the motor rotates 9 further. Furthermore, the screw shaft rotates 2 further. This is done by the screw shaft 2 on the threaded ring 1c exerted a feed force. This will make the threaded ring 1c at the screw shaft 2 against the force of the spring 21 moved forward so that he out of the ring 1b emerges.

If the threaded ring 1c forward to out of the ring 1b emerges through the threaded ring 1c the sash lever 20 clockwise 2 pivoted, which has the consequence that not shown shutter wings are pivoted in the shutter-opening direction. The degree of pivoting of the shutter wings is in the form of pulses from the motion detector 19 detected. The pulse output of the detector 19 goes to the input of the digital comparator 127 created. If the number of such to the digital comparator 127 applied pulses equal to those in the exposure register 142 stored reference pulse number is the digital comparator 127 an output signal. This will be the transistor 139 switched off so that the magnet 32 is excited. If the magnet 32 is excited by the biasing force of the spring 35 the first lever 33 pivoted clockwise, which has the consequence that the shutter wings, not shown, are closed.

After that leads to the output signal of the digital comparator 127 towards the motor control circuit 143 the counter-rotation of the engine 9 cause. As a result, first the threaded ring 1c in the ring 1b at the tube 1 withdrawn. Subsequently, the tube is 1 in the in 3 returned to its furthest withdrawn position. In this case, the lead stands 23a of the driving part 23 of the differential gear 4 first at the point b of the cam surface 22c of the driven part 22 , If the driving part 23 rotates counterclockwise, leads the driven part 22 until near the end of the first turn of the driving part 23 no movement out while the driving part 23 performs its axial movement according to the rotation. During this time the driving part comes up 23 the driver 25c of the dental sector arm 25 high in his original position. Therefore, the Zahnsektorarm 25 around the axis 25a pivoted clockwise back to its initial position. In this way, the different elements that make up the adjuster 11 form, returned to their starting positions before the driving part 23 and the driven part 22 be coupled with each other. If the parts 22 and 23 coupled together, they are rotated in the opposite direction to the tube 1 retire to his initial position. After the film has been transported around a picture by a known method, the motor becomes 9 off.

In the embodiment described above, the adjusting device 11 , the device 10 and the transfer devices 16 and 17 all designed mechanically. However, these devices need not be of a purely mechanical nature. Rather, of course, the mechanical design thereof may be replaced by any other non-mechanical design.

The optical system adjusting apparatus of a camera according to a second embodiment is configured as follows 4 Fig. 11 is an oblique view showing the mechanical configuration of essential parts of a power transmission device and the parts around a release lever of the second embodiment camera. The 4 shows the parts in a resting state.

According to 4 is a shutter release button 201 which is to be pressed for initiating a picking operation, at an upper bent portion 202 a trigger lever 202 fixed, the up with respect to the camera body and down (according to 4 ) is displaceable. In the release lever 202 are slits in the longitudinal direction 202 and 202c educated. In these slots are screws 203 and 204 used so that the lever under the leadership of these screws along these slots can be moved up and down. Furthermore, the release lever has 202 a spring attachment part 202d on which a spring 205 for biasing the lever upwards, and a switch contact carrier part 202e where a switch contact 206 attached, which has a conductor pattern on a solid substrate 207 is displaceable. That on the solid substrate 207 trained and established conductor patterns and the switch contact 206 are configured to act as a switch sw1 for a first stroke and a switch sw2 for a second stroke or stroke in accordance with the sliding movement of the switch contact 206 serve. The switches are connected to a switch interface described below.

Parallel to the release lever 202 is on the back of an auxiliary release plate 208 arranged. On a spring attachment 208d at the bottom of the plate 208 is a spring 209 attached to the plate 208 constantly up to bias. In the auxiliary release plate 208 are slots 208b and 208c trained with the slots 202b and 202c the release lever 202 to match. The plate 208 is the same as the release lever 202 up and down under the guidance of the screws 203 and 204 slidable, which also in the slots 208b and 208c are used. The auxiliary release plate 208 is with a lower bent part 208a provided, against the lower end surface of the release lever 202 butt when the trigger button 201 is depressed until the first stop. At the side with the spring attachment part 208d opposite side of the auxiliary release plate 208 are arm parts 208e and 208f educated. At the front end of the arm part 208e is an engaging part 208g designed for engagement with a part of a planetary lever 218 is arranged for attitude adjustment. The other arm part 208f has a bent part at its front end 208h for locking by a latch part 210a a locking lever 210 which is designed as follows.

The locking lever 210 is about a screw 211 pivotable, which is attached to a component, not shown, of the camera. The latch part 210a is in the middle area of the locking lever 210 educated. The locking lever 210 is by a spring 212 , which at a formed at the lower end of the lever spring attachment part 210b is attached, constantly biased to pivot counterclockwise. An upper part 210c of the locking lever 210 is within the pivoting range of the planetary lever 218 arranged, which will be described in more detail below.

An engine 213 is the driving device for film transport and rewinding in the camera. Furthermore, the engine is used 213 for driving an adjusting device for the automatic focusing and for switching between two different focal lengths of the optical system of the camera as well as for driving a shutter of the camera. According to 4 is the engine 213 inside a film take-up spool 226 arranged. The motor rotates in one direction through a central unit 400 and a motor drive circuit 403 is determined, which below with reference to 6 to be discribed. On the outside of the engine 213 is a pinion 214 appropriate. The pinion 214 constantly meshes with a larger wheel part of a Untersetzungsrads 215 which has the shape of a step gear. With the smaller wheel part of the reduction gear 215 combs a sun gear 216 which is one of the gears of a planetary gear device. This planetary gear device consists of the sun gear 216 , a planetary gear 217 , the planetary lever 218 and a planetary gear holder 219 , The sun wheel 216 and the planetary gear 217 are with respect to the planetary lever 218 and the planetary gear holder 219 rotatable. However, between the planetary gear 217 and the planetary lever 218 a feather 220 is arranged in the compressed state, the planetary gear can 217 Do not turn before the torque acting on it is greater than one through the spring 220 arising friction torque is. Therefore, when the applied torque is less than the friction torque, the planetary gear becomes 217 not rotated, but together with the planetary lever 218 around the sun wheel 216 pivoted.

A rewind wheel 221 transmits the rewinding of the film from the planetary gear 217 absorbed driving force via a Rückspulgetriebe 222 to a fork driver 223 , A winding wheel 224 transmits in the film transport from the planetary gear 217 absorbed driving force via a reduction gear 225 to a gearing part 226a acting as a unit with the film take-up spool 226 is trained.

A transmission wave 228 for moving a lens barrel 301 in the direction of the optical axis is arranged perpendicular to the optical axis. The lens barrel 301 forms together with other, not shown elements the optical system of the camera. At the upper end of the transmission shaft 228 is a gear 227 fixed in the pivoting area of the planetary gear 217 is arranged to mesh with this when the planetary gear 217 together with the planetary lever 218 clockwise from the position according to 4 is pivoted. The torque of the transmission shaft 228 is about bevel gears 229 and 303a to a horizontal wave 303 and continue on to the wave 303 attached gear 304 transferred to the adjusting device, which in 5 is shown.

A lens barrel follower 230 has a pin-shaped coupling part at one end 230a which is attached to the lens barrel 301 attacks, and at the other end an end portion 230b that's against an end part 232a a hook lever 232 encounters. The successor lever 230 becomes according to the displacement of the lens barrel 301 around an axis inserted in its central opening 231 pivoted. The hook lever 232 except that with the end part 230b the successor lever 230 engaged end part 232a a spring attachment part 232b for a spring 234 that the hook lever 232 constantly counterclockwise to pivot about one to the axis 231 parallel axis 233 pretensioned, and a hook part 232c for holding an end piece 235a a zeroing lever 235 ,

Below are now based on the 5 the setting device for the lens barrel and the closure control device coupled thereto in the camera according to this second embodiment described.

In the 5 correspond to the bevel gear 303a , the wave 303 and a gear 304 already in 4 . shown The gear 304 gets over the gear 227 , the planetary gear 217 etc. the torque of the motor 213 , The rotation of the gear 304 is about gears 305 and 306 to a gear 307a and on to a propeller shaft 307 transferred to the gear 307a is attached. On the outer circumference of the propeller shaft 307 a thread is formed with a predetermined pitch.

At the propeller shaft 307 is a pulse disc 308 attached with a pattern of transparent parts 308a and impermeable parts 308b is provided and for determining the extent of movement of the lens barrel 301 serves. On both sides of the pulse disc 308 is a light barrier 309 for optically detecting the rotation of the pulse disc 308 and converting the rotation into electrical pulse signals. The pulse disc 308 and the photocell 309 together form a detector for determining the extent of movement of the lens barrel 301 , On the propeller shaft 307 is a tubular movable actuator 310 with a threaded hole 310a for threaded engagement with the thread of the screw shaft 307 placed. The control part 310 is according to the rotation of the screw shaft 307 axially movable on this. At the front end of the control 310 is a flange 310b formed while on the outer peripheral surface of the actuating part 310 axially on a line a longitudinal wedge 310c is trained. Except for this longitudinal wedge 310c the entire peripheral surface is polished to a smooth cylindrical surface.

On the outer peripheral surface of the first actuator 310 is another movable control part 311 attached, at the rear end of a ratchet wheel 311 is trained. An axial through the center of the control 311 trained hole 311b is with a keyway 311c provided that the longitudinal wedge 310c of the control part 310 receives in a manner displaceable with respect to each other. D. h., The control part 311 can with respect to the actuator 310 Although moved axially, but not rotating. The diameter of the axial bore 311b of the control part 311 is smaller than the outer diameter of the flange 310b of the first actuator 310 , In this way prevents the flange 310b continue in the control section 311 penetrates, so that the flange serves as a stop.

At the front end of the outer periphery of the actuator 311 is a threaded element 311d formed, the slope, for example, a quarter of the slope of the screw shaft 307 formed thread is. The threaded element 311d gets into a threaded opening of the lens barrel 301 screwed in, which is described below. In this way, the lens barrel 301 over the first and the second control part 310 and 311 through the propeller shaft 307 held. In this way, the lens barrel is axially on the screw shaft 307 displaceable. Further, the lens barrel 301 axially with respect to the actuator 311 movable. That is, the screw shaft 307 and the controls 310 and 311 together form two adjusting devices of the adjusting device, wherein the screw shaft 307 together with the control part 311 a first adjusting device and together with the control part 310 forms a second actuator. The thread on the screw shaft 307 serves as part of a coarse feed while the threaded element 311d on the control part 311 as part of the fine feed in the adjustment device.

The one-piece with the control part 311 trained ratchet wheel 311 forms in conjunction with a pawl described below 312 a shift switching device for switching between the displacement effects of the aforementioned actuators. This serves the pawl 312 in addition, turning the control 311 to prevent.

The pawl 312 is on the lens barrel 301 mounted so that they are about an axis 312a is pivotable, which is parallel to the propeller shaft 307 is arranged. The pawl 312 is close to the peripheral part of the ratchet wheel 311 attached and is by a spring 313A constantly to the clockwise pivoting about the axis 312a biased. A catch 312b the pawl 312 This is usually caused by teeth 311 of the ratchet wheel 311 kept away. A force to pivot the pawl 312 counterclockwise on the axis 312a is by an anchor lever described in detail below 323 caused with a pen 323c for pushing up the pawl 312 is provided.

A parallel to the screw shaft 307 aligned ratchet rack 330 with sawtooth-shaped teeth is mounted on a (not shown) component such that they are parallel to the screw shaft 307 is displaceable, and designed so that it the actuator 311 follows. To stop the forward movement (to the front of the lens barrel 301 out) of the ratchet rack 330 at a given location is a stop pawl 313 mounted on a (not shown) component such that it is about an axis 313a is pivotable. The stop pawl 313 has a latch part at one end 313b and is by a spring 314 to a counterclockwise rotation ge Mäss 16 around the axis 313a biased. A rear end piece 313c the stop pawl 313 is arranged so that it passes through a pin 323f pressed down on one arm 323d the anchor lever 323 is attached.

From the vorstehe the description it can be seen that the stop pawls 312 and 313 , the ratchet 330 and the ratchet wheel 311 together form a lens barrel stopping device for stopping the movement of the lens barrel at a desired location.

On the lens barrel 301 is one around an axis 315 swiveling forked lever or toggle lever 315 stored. At the front end of one arm of the bell crank 315 attached pen 315b abuts against the front face of the actuator 310 , One at the front end of the other arm of the toggle lever 315 attached additional pen 315c butts against an arm of a shutter-wing opening lever 317 , The toggle 315 is constantly by a spring 316 to turn clockwise according to 5 around the axis 315 biased.

The opening lever 317 is an essential part of the shutter control device and is on the lens barrel 301 pivotable on an axle 317a stored, which is parallel to the propeller shaft 307 extends. The opening lever 317 has a flat arm 317c and a pen-shaped arm 317b and is by a spring 318 to turn counterclockwise 5 biased. The arm 317c of the opening lever 317 carries a wing release lever 319 that's about an axis 319a is pivotable. The wing release lever 319 has two arms 319b and 319c and is by a spring 320 to turn counterclockwise 5 around the axis 319a biased. From the lens barrel is also a wing lever 321 held around an axis 321a is pivotable, which is parallel to the propeller shaft 307 extends. An arm 321b of the sash lever 321 grabs the arm 319c of the wing release lever 319 at. One on the other arm of the sash lever 321 attached pen 321c engages in a through hole in a shutter wing, not shown, and thus serves to control the shutter blade. The sash lever 321 is through one on the arm 321b attached spring 322 for turning clockwise about the axis 321a biased. The positions of the pawl 312 , the stop pawl 313 and the wing release lever 319 be through the anchor lever 323 controlled. The location of the lever arm 323 is by means of an electromagnet 329 controlled, it is energized or de-energized in accordance with commands from a computing device described below.

The anchor lever 323 is mounted on a component of the camera body or the like so as to be about an axis 323a is pivotable to the screw shaft 307 is parallel. The anchor lever 323 has an arm 323b with his arm 319b of the wing release lever 319 engaged, the arm 323d , of the pens 323c and 323f carries, and another arm 323e who has a flat anchor 325 wearing. By a spring 324 becomes the anchor lever 323 for counterclockwise rotation about the axis 323a biased. The anchor lever 323 opposite electromagnet 329 is an electromagnetic actuator for the control of the first and the second actuator and also for the drive of the shutter control device. The electromagnet 329 is over a yoke 328 attached to a fixed part of the camera body. An axle yoke 327 that's from one at the yoke 328 attached coil 326 protrudes, serves to tighten the anchor 325 ,

The function of the mechanical parts of the camera according to this embodiment will be described below with reference to FIGS 4 and 5 described while the design and function of the electrical elements will be described below.

If the camera is not first put into operation for recording, namely the shutter release button 201 is not actuated, the following conditions exist in the camera: The various parts take the in 4 shown relative positions. The lens barrel 301 is in a position where he is closest to the impulse disk 308 to 5 brought is. The pawl 312 does not stand with the ratchet wheel 311 engaged. The latch part 313b the stop pawl 313 stands between the teeth 330a the ratchet rack 330 , Between the latch part 313b and the teeth 330a is however a certain distance. Furthermore, the electromagnet 329 is not excited, is the anchor 325 not dressed. Therefore, the anchor lever stands 323 in a position where he is by the spring 324 is pivoted counterclockwise.

The planet wheel 217 combs according to 4 with the take-up wheel 224 , Therefore, the driving force is transmitted from the planetary gear device only to the film transporting device. Further stand the arm 208e and the engaging part 208g the auxiliary release plate 208 on the swivel locus or in the swivel range of the planetary lever 218 , Furthermore, the end part 235a of the zeroing lever 235 at a distance from the hook part 323c of the hook lever 323 , The driver part 235c of the zeroing lever 235 reaches into the recess 228a the transmission shaft 228 , The locking part 235d of the zeroing lever 235 is below the pivoting range of the planetary lever 218 ,

If by pressing the shutter release button 201 the release lever 202 is pushed down to the first stop, abuts the lower end of the release lever 202 against the bent part 208a the auxiliary release plate 208 , This will cause the downward sliding movement of the release lever 202 temporarily interrupted. It will also be on the arm 202e the release lever 202 fixed switch contact 206 over the conductor pattern on the substrate 207 shifted down and stopped in a first predetermined position. Here, the first switch sw1 described below is turned on. As a result, the computing device is supplied with a signal via a switch interface described below, which signal indicates the switch-on state of the switch sw1. Then start in a known manner, the battery test, the light measurement and the distance measurement. These operations will be described in detail below in the description of the electrical function.

When the trigger button 201 continues to be pressed or pressed down, the release lever slide 202 and the auxiliary release plate 208 down together. This will get the arm 208e and the engaging part 208g the auxiliary release plate 208 under the pivot plane of the planetary lever 218 , Furthermore, the bent part passes 208h at the front end of the lowest arm 208f the auxiliary release plate 208 under the latch part 210a of the locking lever 210 , The bent part 208h is then through the pawl part 210a recorded. Thus, the auxiliary release plate 208 held in a downwardly shifted position. It will be the trigger lever 202 mounted switch contact 206 over the conductor pattern on the substrate 207 pushed down and stopped in a second predetermined position. As a result, the second stop switch SW2 described below is turned on. Via the switch interface, the computing device is supplied with a signal which indicates the switch-on state of the switch sw2.

In this way, when the turn-on signal of the second switch sw2 is generated, the calculating means outputs a reverse rotation signal REWIND, by which the counter-rotation, namely, the clockwise rotation, ceases 4 of the motor 213 is caused. In response to this signal, the motor is actuated by a motor control circuit so that it begins to rotate in the opposite direction, which causes the rotation to be sequential to the bevel gears 229 and 303a , the wave 303 and the gears 304 . 305 . 306 and 307a transfer. This will cause the screw shaft 307 set in rotation.

In the foregoing embodiments, the first and second actuators include engagement members or adjustment members having different pitches for effecting relative axial movement between the propeller shaft 307 and the control part 310 as well as between the threaded element 311d of the control part 311 and the threaded hole of the lens barrel 301 , Therefore, at the initial rotation of the screw shaft 307 some relative rotation and relative axial movement between the screw shaft and the actuator 310 arise. In this case, however, is the pitch of the threaded element 311d of the control part 311 smaller than that of the thread of the propeller shaft 307 (such as a quarter of them). Moreover, there is no great resistance. Therefore, the rotation of the screw shaft 307 First, the relative axial movement between the actuator 311 and the lens barrel 301 on the threaded element 311d of the control part 311 , As a result, turn in this case, the two actuators 310 and 311 together with the propeller shaft 307 , This starts the displacement or movement of the lens barrel 301 in very fine pitch in the direction of the optical axis of a lens, not shown, but held by the lens barrel. The pawl or ratchet remains 330 stopped, as the control part 311 not moved in the direction of the optical axis.

The distance to the lens barrel 301 through the thread element 311d of the control part 311 The first actuator is axially displaced by the detector with the light barrier 309 in the form of the number of revolutions of the propeller shaft 307 detected. The currently obtained position information is fed to the computing device. Upon receipt of the information, the computing device determines whether the amount of movement of the lens barrel 301 has reached a predetermined displacement value, which will be described in more detail below. Upon reaching the value of the computing device via a driver circuit of the solenoid 329 excited. This will be the anchor 325 dressed. The anchor lever holding the anchor 323 is clockwise according to 5 around the axis 323a pivoted. The one on the arm 323d the anchor lever 323 attached pins 323c moves up, causing the pawl 312 counterclockwise to 16 around its axis 312a is pivoted. The latch part 312b engages between the pawls or teeth of the ratchet wheel 311 , This will counterclockwise in this case 5 rotating ratchet wheel 311 stopped.

As a result, also the rotation of the ratchet wheel 311 a unit forming control part 311 interrupted. This ends the rotation of the actuator 311 over the longitudinal wedge 310c coupled control part 310 , Thereafter, as a result, a relative rotation and a relative axial movement occur only between the propeller shaft 307 and the control part 310 on. The lens barrel 301 then starts at a rough feed pitch on the propeller shaft 307 together with the two control parts 310 and 311 to move forward. The following is the control of the lens barrel 301 sub-fine feed division referred to as the first controller.

The extent of movement of the lens barrel 301 after completing the rotation of the ratchet wheel 311 also by means of the detector with the light barrier 309 in the form of the number of revolutions of the propeller shaft 307 detected. The position information that has just been determined is fed to the computing device. In the manner described above, the amount of movement of the lens barrel is then determined in the computing device to determine whether it has been moved out of the previous position by a predetermined displacement value. Upon determination of reaching this value, the power supply of the electromagnet is via the driver circuit 329 interrupted and this excited.

By the de-raining of the electromagnet 329 becomes the anchor 325 free. By the spring 324 becomes the anchor lever 323 counterclockwise to 5 pivoted. The one on the arm 323d the anchor lever 323 attached pin 323f moves down so that he the end part 313c the stop pawl 313 pushes down. As a result, engages the at the other end of the stop pawl 313 trained pawl part 313b between the teeth of the ratchet 330 , so that their forward movement is stopped. As a result, in turn, the forward movement of the actuator 311 and the lens barrel 301 completed. The lens barrel 301 stops after the required travel distance in a predetermined position (which is determined by a distance measurement from an automatic focus processing circuit described below). In this case, by hooking the engagement state between the pawl 312 and the ratchet wheel 311 maintained. This leaves the locking of the rotation of the actuator 311 receive. This control of advancing the lens barrel 301 coarse division is hereinafter referred to as second control.

Both the first and second controls serve to control the amount of movement or displacement of the lens barrel 301 to control. The control operation must be performed in an accurate and fast manner on many teeth for the feed. Details will be explained as an example below:
Assuming that the movement of the lens barrel was carried out solely by means of the first actuator and that the feed distance per tooth of the ratchet wheel is 0.25 mm and the total travel distance is 18 mm, the total number of feed stages becomes 72 (18/0 , 25). If a certain time delay after energizing the electromagnet 329 and before the intervention of the pawl part 312b the pawl 312 into the teeth of the ratchet wheel 311 as well as the variations caused by spurious signals are taken into account, generally an arrangement with a duration of 10 ms per tooth allows adequate control with sufficient safety margin. In this case, the time required for pushing out the lens barrel by the moving distance of 18 mm becomes 720 ms (72 × 10), which is extremely long.

In the described embodiment, the threaded element of the screw shaft 307 provided with an external thread with the pitch 4 mm, while the threaded element 311d of the control part 311 formed with an external thread of pitch 1 mm. The screw shaft 307 makes one revolution in 40 ms. The ratchet rack 330 is provided with 17 teeth at intervals of 1 mm. Because the ratchet wheel 311 has four latches, the lens barrel is advanced by 0.25 mm per pawl, which takes 10 ms. On the other hand, the amount of advancement of the lens barrel on the ratchet is 330 four teeth per revolution of the screw shaft 307 which corresponds to 4 mm, the time required per tooth being 10 ms.

For example, if the lens barrel 301 is pushed out by 7.75 mm, it is with the threaded element 311d of the control part 311 initially shifted by 0.75 mm. D. h., The control part 311 is stopped by the pawl 312 on the third pawl of the ratchet wheel 311 attacks.

After that, the ratchet will be 330 shifted by 7 mm. The ratchet is stopped by the pawl part 313b the stop pawl 313 on the seventh tooth of the locking rack 330 intervenes. This will make the lens barrel 301 advanced by a total of 7.75 mm. In the arrangement with the first actuator, this feed of 7.75 mm corresponds to 31 teeth (= 7.75 / 0.25), the time of 310 ms (= 31 × 10) being required. In contrast, in the described embodiment for the first control three latches in 30 ms and the second control seven teeth used in 70 ms, so that the control can be accomplished in a total duration of only 100 ms.

For advancing the lens barrel by the maximum travel distance of 18 mm, 40 ms are for the four pawls (for advancement of 1 mm) in the first control and 170 ms for seventeen teeth (for advancement of 17 mm) in the second control tion so that the control can be performed in a total of 210 ms, while for the same setting in the arrangement with only the first actuator 720 ms are required. It can therefore be brought about a greater distance of movement in a shorter time. While in the above description, as an example, a relatively large adjustment of the lens barrel 301 With this configuration, according to the described embodiment, the feed with a higher resolution can be accomplished by finer division of the line as well as in a shorter time. Although this is not described in detail in the above description of the embodiment, also at the same time with the focus of the (not shown) taking lens is made a conversion from one focal length to another, which will be described in more detail below.

After completing the adjustment of the lens barrel 301 (the first and second controls) continues to rotate the propeller shaft. However, there is another movement of the lens barrel 301 and the actuator 311 is prevented, only moves the actuator 310 on the propeller shaft 307 in front. As a result, enters the actuator 310 further forward than the control part 311 , As a result, by the front end face of the first actuator 310 the on an arm of the through the lens barrel 301 held knee lever 315 attached pen 315b initiated. This will be the toggle 315 counterclockwise around the axis 315 pivoted. This pushes the pin attached to the other arm 315c against the arm 317b the sash opening lever 317 , In this way, according to 5 the sash opening lever 317 clockwise about its axis 317a pivoted. Then the arm becomes 321b of the sash lever 321 over the on the wing opening lever 317 fixed arm 319c of the wing release lever 319 counterclockwise around the axis 321a pivoted. As a result, the other arm is also counterclockwise about the axis 321a pivoted. As a result, not shown, on the pen 321c opened on the other arm patch wing, so that the exposure is brought about.

The shutter opening time from the beginning of the exposure to its completion is also the photocell 309 in the form of the number of revolutions of the screw shaft 307 detected in the same manner as in the first and second controls. When the calculator determines that one of the number of revolutions of the propeller shaft 307 corresponding to a value of light received from a processing circuit for the automatic exposure, indicating the achievement of an appropriate shutter opening time, the calculating means gives a signal for starting the power supply to the solenoid 329 from. Meanwhile, the power supply of the engine 213 off. When the power supply start signal for the electromagnet 329 is discharged, this is energized, so that the anchor 325 is attracted. Then the anchor lever 323 again clockwise about its axis 323a pivoted. The arm 323d and the pen 323f move upwards, reducing the pressure on the end part 313c the stop pawl 313 will be annulled. As a result of the engagement with the teeth 330a the ratchet rack 330 but comes the pawl part 313b the stop pawl 313 not free.

Meanwhile, the clockwise pivoting of the arm causes 323b the anchor lever 323 that the arm 319b of the wing release lever 319 clockwise about its axis 319a swings. Therefore, the other arm pivots 319c in the same direction from the arm 321b of the sash lever 321 path. As a result, the spring causes 322 in that the aperture stop lever 321 clockwise about its axis 321a swings. This will be on the pen 321c closed the shutter attached wings, whereby the exposure is terminated. Hereinafter, this control of the shutter control device will be referred to as third control.

When a signal indicating the turn-off state of the second switch sw2 is generated by the release of the release button 1, the calculator outputs a wind-up signal WIND, through which the motor 213 is rotated in the forward direction. So if the engine 213 the forward rotation starts, the sun wheel turns 216 counterclockwise. The planet wheel 217 starts to turn clockwise. The counterclockwise rotation of the sun gear 216 causes a counterclockwise directed pivotal force on the planetary lever 218 which, however, can not pivot counterclockwise. Therefore, the planet remains 217 in engagement with the gear 227 , As a result, it acts on the planetary gear 217 a load torque greater than that by the spring 220 caused friction torque is. This causes a rotation of the planetary gear 217 clockwise through that sun gear 216 , This will be the gear 227 turned counterclockwise.

The force of counterclockwise rotation of the gear 227 is about the transmission wave 228 , the bevel gears 229 and 303a and the gears 304 to 307a to the propeller shaft 307 transfer. This will cause the screw shaft 307 rotated in the direction opposite to the previous direction of rotation. Then the lens barrel will move 301 , the control part 310 and the second actuator 311 in The directions opposite to the previous directions of movement, where they return to the respective starting positions.

During the return of the lens barrel 301 in its initial position is the end part 230a of the lens barrel follower lever 230 in the direction of an arrow A after 4 emotional. Therefore, the hook lever pivots 232 in the direction of an arrow B. Then comes the hook part 232c of the hook lever 232 at a distance from the end part of the zero position lever 235 , The zero position lever 235 is pivoted counterclockwise about its axis. A driver part of the zeroing lever, which was previously at a distance from the outer peripheral surface of the transmission shaft 228 was, thereby becomes with the transmission wave 228 brought into contact. At the same time an engaging part of the zeroing lever 235 under the pivoting plane of the planetary lever 218 lowered. This process takes place when the lens barrel 301 his starting position comes close. When the transmission wave 228 continues to rotate, falls the driver part of the zero position lever 235 in a recess of the transmission shaft 228 , Thereby, a state is reached, in which the lens barrel has reached its initial position.

Once the lens barrel 301 arrives in its initial position, cause various forces on the planetary lever 218 that this from the gear 227 away and to the backwheel 221 pans out. Here comes the planet 217 Initially in engagement with the Rückspulrad 221 , However, there is no stop the planetary lever 218 holds, the planet wheel is running 217 in the same way as in the Uhrzeigerschwenkung described above on the Rückspulrad 221 past. Afterwards the planetary wheel stops 217 when it comes to the wind-up wheel 224 combs. Before doing this, the planetary lever 218 is stopped, it engages the upper end part 210c of the locking lever 210 on, so that this from left to right according to 4 is moved. Therefore, there is the pawl part 210a of the locking lever 210 the bent part 208h the auxiliary release plate 208 free. This can be done by means of the spring 205 respectively. 209 the auxiliary release plate 208 and the release lever 202 be moved up to their original positions.

Also during the above operations, the engine is rotating 213 further. Therefore, if the planetary lever 218 its whirl counterclockwise in 4 has finished, causes the clockwise rotation of the planetary gear 217 in that the take-up wheel 224 rotates counterclockwise, causing the reduction gear 225 the movie on the spool 226 is wound up. During the film transport, the transport path is detected by means of a detector, not shown. When the film is wound by a predetermined length, the computing device turns on the power of the motor 213 switched off for forward rotation. That is, the winding signal WIND is not generated further. The various construction elements mentioned in their in the 4 , Returned initial positions shown, so that in the camera the so-called. Reset state is brought about. Therefore, the camera is ready for a next shot.

For rewinding of the film into a film cartridge is either by a film transport length detector determines the end of the film or an unillustrated reset button pressed.

An electric circuit describing the motor will be described below 213 , the electromagnet 329 and control other elements in the above-explained first, second and third controls.

The 6 Fig. 12 is a block diagram of a circuit arrangement of the camera according to the second embodiment. The computing device is a central processing unit (CPU) 400 , The central unit 400 to 6 is formed by a microcomputer or a logical circuit arrangement and designed for various control operations on circuits, such as for generating a signal PCON for switching on a light barrier detector circuit, the light barrier 309 which generates a signal PCSIG indicating the amount of movement of the lens barrel 301 displays. An electromagnet driver circuit 402 serves to drive the electromagnet 329 in accordance with an output signal PLG of the central unit 400 , A motor driver circuit 403 causes the forward or reverse rotation of the motor 213 in accordance with a signal WIND or a rewind signal REWIND from the central unit 400 , The computing device in the form of the central unit 400 , and the driver circuits 402 and 403 are components of the control device for controlling the first and second actuator. A light-emitting diode driver circuit 404 causes the flashing of an infrared LED 405 in accordance with an output signal iRON of the central unit 400 and forms together with a light-receiving sensor 406 and an autofocusing / AF processing circuit 407 a well-known automatic focusing system. An AE / AE processing circuit 408 works in conjunction with a light-receiving sensor 409 for determining the illuminance of an object to be recorded as a known AE or AE. A multiplexer 410 takes from these circuits analog output signals AFOUT and AEOUT on. An analog / digital converter 411 sets an analog signal from the multiplexer 410 into a digital signal. A switch cut Job 412 transmits the information about the switching states of the first stop switch sw1 for the shutter release, the second stop switch sw2 for shutter release, a telephoto / wide-angle switch swT / W for switching between long focal length and short focal length, and contact switches swISO1 to swISO3 for reading one Information about the film sensitivity.

The 7 Fig. 10 is a circuit diagram showing the circuit construction of a control system of the embodiment in the CPU 400 shows. The 8 (A) and 8 (B) show details of the aforementioned driving and processing circuits. The 9 Fig. 10 is a flow chart illustrating the functions of these circuits. The following is based on the 6 to 8 (B) the function of the electrical circuit arrangement described in this embodiment according to the flowchart.

In the initial state (or idle state according to 4 the camera is waited to turn on the first switch sw1. When the first switch sw1 is turned on by pressing the shutter release button 1, the switch interface is used 412 a switch-on signal for the central unit 400 fed. Thereupon the central unit gives 400 a high level H output signal PLG for a battery check to ensure the subsequent proper execution of the functions of the respective circuits. The signal PLG with the level H becomes the solenoid driver circuit 402 supplied, whereby the power supply to the electromagnet 329 starts. If a battery check measurement circuit, not shown, detects that the result of the battery check is "NG", indicating a battery capacity below a voltage sufficient for the circuit function, the power supply of the solenoid is immediately interrupted. The camera is then returned to the initial state with the switch sw1 turned off. If the battery check does not give the result "NG", the power supply of the solenoid will start after switching off the power 329 a next sequence of steps.

In the next step, by means of the light measuring sensor 409 and the AE processing circuit 408 determines a photometric output required to determine a shutter open time. In detail, according to 8 (B) from the light metering sensor 409 generates a photocurrent that matches the brightness of the subject. The photocurrent is through an arithmetic amplifier 500 and a diode 501 compressed. Then, the compressed photocurrent is converted to a value at which an opposite saturation current through a diode 502 and a constant current source 503 is canceled. A signal for this value is then sent to a noninverting amplifier from an operational amplifier 504 , a temperature-sensitive resistor 505 and a resistance 506 supplied to obtain a Lichtmeßsignal AEOUT without temperature coefficient. The signal AEOUT becomes the multiplexer 410 fed. The multiplexer is used to switch analog input signals of the A / D converter 411 , In this case, therefore, Lichtmeßsignal AEOUT is in the A / D converter 412 entered. The input signal is subjected to the A / D conversion. The output data of the A / D converter 412 then become the central unit 400 supplied via a terminal SD1. To 7 receives the central unit 400 this data with a shift register (in this case, five bits) of D flip-flops 600 to 604 , Upon completion of the data transfer, a signal AEDSET is generated (not shown in the central processing unit) 400 contained circuit). Thereafter, in synchronism with the rise of this signal AEDSET, the above-mentioned data is stored as data D1 in D latches 610 to 614 stored.

After completion of the storage of the data D1, the CPU generates 400 the output signal iRON at the level H for the determination of a distance measuring signal AFOUT, that for the distance setting of the lens barrel 301 is needed. By this signal iRON with the level H, the light-emitting diode driver circuit 404 from an arithmetic amplifier 507 , Resistors 508 and 509 and a transistor 510 to 8 (B) turned on, causing the infrared light emitting diode 405 lights. That of the LED 405 emitted infrared light (or signal light) is reflected by the object. The infrared rays reflected from the object are detected by the light receiving sensor 406 added. From the incident beams signal currents Ia and Ib are obtained according to the trigonometric measuring principle, which correspond to the object distance. These signal currents are by current / voltage converters from each of a computational amplifier 511 and a resistance 512 or an arithmetic amplifier 513 and a resistance 514 converted into voltage values. Thereafter, the signal beams of the light emitting diode 405 through a differential amplifier from a computer amplifier 515 , Resistors 516 and 517 and a capacitor 518 and by another differential amplifier from a computer amplifier 519 , Resistors 520 and 521 and a capacitor 522 amplified to signal voltages Va and Vb. These signal voltages Va and Vb are provided by a summing amplifier from an operational amplifier 523 and resistors 524 to 526 added to (Va + Vb). The output of the summing amplifier becomes a divider circuit 527 supplied, which performs a division Va / (Va + Vb). As a result of the division results in the distance measuring signal AFOUT, the the multiplexer 410 fed and then through the A / D converter 411 is converted into a digital signal. The digital signal obtained in this way becomes the central unit 400 fed. The distance measuring signal AFOUT corresponds in the assignment 1 to 1 of the object distance and is to the extent of a predetermined movement distance of the lens barrel 301 proportional. At this time, the output iRON for the LED assumes the low level L. In the same way as the Lichtmeßsignal AEOUT takes the central unit 400 the data on the shift register from the D flip-flops 600 to 604 to 7 on. Upon completion of the data transfer, a signal AFDSET is obtained. Thereafter, in synchronism with the rise of the signal AFDSET, the data is stored as data D2 in D latches 605 to 609 stored.

Next, it is determined by the CPU whether the telephoto / wide-angle switch swT / W is switched in the position for the larger focal length or for the shorter focal length. The swT / W switch is turned on for the long focal length. In this case, synchronous with the rise of a signal TWSET (in the central unit 400 generated by a circuit, not shown) via a Pegelanhebewiderstand 615 and an inverter 616 , according to 7 on. the level H in a D-buffer 617 stored. When the lens is in the position for the large focal length, data a are supplied as correction data D3 for lens barrel advancing amount correction and data "0" as AE (F-number f-number) correction data D4. If the lens is in the short focal length position, data "0" is supplied as correction data D3 and data b as AE correction data D4. In this embodiment, due to the circuit arrangement, the data a in the case of the large focal length is "8". Next, the film sensitivity information determined as a digital DX code signal becomes data D5 with the switch swISO1, a resistor 618 and an inverter 619 in a D-buffer 620 , with the swISO2 switch, a resistor 621 and an inverter 622 in a D-buffer 623 and with the swISO3 switch, a resistor 624 and an inverter 625 in a D-buffer 626 stored.

Subsequently, in the central unit 400 those in the D latches 605 to 609 stored distance measurement data D2 converted into control data M1 for the first control and control data M2 for the second control. This conversion operation can be accomplished with a program by dividing the distance measurement data D2 by any variable x and storing the thus-obtained quotient as the control data M2 and a remainder as the control data M1. If this conversion operation is to be performed in circuit, the in 7 shown selected circuit arrangement. In this case, the lower two bits of the distance measuring data D2 are used as the control data M1 and the higher three bits are used as the control data M2. By this arrangement, the variable x is equivalently set to "4", for example. Further, in the CPU, the photometry data D1, the AE correction data D4 and the film sensitivity information are all added to obtain data DS. Then, with a value selected from a table corresponding to the data DS, n pulse count data Kn corresponding to this data DS is obtained and stored as data M3 for ensuring a suitably long shutter open time. To 7 For example, the photometry data D1, the AE correction data D4 and the film sensitivity information all become a decoder 627 fed. The five-bit pulse count data is output from the decoder 627 as data for setting the appropriate shutter opening time. Thus, the operation to be executed when turning on the first switch sw1 is described above.

If the trigger button is pressed further under these conditions, the second stop switch SW2 is turned on. A switch-on signal via this is via the switch interface 412 the central unit 400 fed. Upon receiving the switch-on signal, the central unit generates 400 the reverse rotation signal REWIND and leads it to the motor drive circuit 403 to (namely, that a signal line is switched to high impedance). Upon receipt of the signal flows in accordance with 8 (A) a constant current from a constant current source 528 to the base of a transistor 529 , so that this is switched through. Furthermore, current flows through resistors 530 and 531 to transistors 532 and 533 to switch it on. As a result, current flows in the direction of an arrow X through the motor 213 , The motor 213 starts to rotate in the same direction as for rewinding the movie. diodes 534 to 537 are additionally designed to prevent destruction of the motor driver transistors by back EMF or the like. If in this way the engine 213 Power is supplied through the various wheels, etc., according to the foregoing, the screw shaft 307 turned. This will make the lens barrel 301 pushed out accordingly. This movement is detected by the photocell. Then, a photosensitive light-receiving element is used 545 and a resistance 546 in the photocell 309 received a light barrier signal. This signal is provided by a noninverting amplifier from an operational amplifier 547 and resistors 548 and 549 strengthened. The amplified signal is in a comparator 550 compared with a reference voltage KVC. In this way, the comparator 550 a logical Si gnal PCSIG received, that of the central unit 400 is supplied. According to the flowchart in FIG 9 is subtracted from the first control data M1 every time "1" when the rise of the light barrier signal is detected. This counting is continued until the value of the data M1 becomes "0". The details of this operation will be described below with respect to the circuit construction on the basis of 7 described ben.

The first control data M1 is in the D latches 608 and 609 stored as 2-bit data. First, the rise of the signal PCSIG to the H level begins by a D flip-flop 628 and 629 formed binary counter increment the increase successively. If then the output signals of the D flip-flop 628 and the D-cache 609 as well as those of the D flip flop 629 and the D-cache 608 become equal to each other, take the outputs of exclusive NOR gates 630 and 631 both at the H level. This will be an RS flip-flop 633 set. In this state is another RS flip-flop 650 still reset. Therefore, the output signals of an inverter have 635 and a NAND member 650 the level H. This has the output of a NAND gate 636 the level L. Then it becomes a NAND gate 638 the solenoid driver circuit 402 an output signal PLG supplied with the level H. In this way, the central unit gives 400 the output signal PLG with the level H from. Thereafter, the solenoid driver circuit begins 402 according to 8 (A) an arithmetic amplifier 55 1 , Resistors 552 . 553 and 554 , a transistor 555 etc., by blocking a resistor 558 via an inverter 556 and a resistance 557 the electromagnet 329 Supply electricity. As a result, in the above-described manner, the fine pitch control of the feed, namely the first control on the lens barrel, becomes fine 301 executed (which carries the shooting lens, not shown).

Subsequently, the data M2 for the second control is subjected to subtraction in a similar manner. However, since the second control data M2 in addition to the information about the object distance, the information about the focal length of the taking lens, in the case of the large focal length, the number of pulses to be counted by a certain vorbe vorbees extent. According to the embodiment 7 For example, the data indicating whether or not the lens is in the position for the large focal length is in the D-buffer 617 saved. These data as well as the output signals of the D-latches 607 . 606 and 605 be with the output signals of a four-level binary counter of D flip-flops 639 to 642 compared. After the RS flip flop 633 is set, the output signal PCSIG of the photoelectric detecting circuit 401 via an AND gate 643 to the clock input of the D flip-flop 639 created. Thereafter, the binary counter starts counting up in synchronization with the output signal PCSIG. When the output signals of the D flip-flop 639 and the D-cache 607 , those of the D flip-flop 640 and the D-cache 606 , those of the D flip-flop 641 and the D-cache 605 and those of the D flip flop 642 and the D-cache 617 all coincide with each other, take the outputs of exclusive NOR gates 644 to 647 all at the H level. This will take the output of an AND gate 648 the level H, whereby the RS flip-flop 634 is set. Under these conditions is an RS flip-flop 663 still reset. Therefore, the output of the NAND gate has 650 As a result, the output signal of the NAND gate has 636 also the level H. Therefore, the level of the output signal PLG of the NAND gate becomes 638 inverted. As a result, the power supply to the electromagnet 329 completed. This ends the previously described coarse-division control, namely the second control of the lens barrel 301 , Further, in this particular embodiment, the lens barrel becomes 301 for the large focal length by a distance corresponding to eight pulses further than for the short focal length pulled out or advanced.

At this time, a shutter control process starts. The data M3 for the third control to be executed in determining the shutter open time is selected in accordance with the light metering signal AEOUT from the AE processing circuit, the AE correction data, and the film sensitivity information. At the in 7 illustrated embodiment, the data D1 in the D-latches 610 to 614 stored, the AE correction data D4 in the D-buffer 617 stored and the film sensitivity data D5 in the D latches 620 . 623 and 626 saved; this data becomes the decoder 627 fed. The output signal of the decoder is used as data M3 for the third control. After the RS flip flop 634 is set in the above-described manner, the output signal PCSIG becomes an AND gate 651 the clock input of a D flip-flop 652 fed. Then a five-bit binary counter starts from the D flip-flop 652 and D flip flops 653 to 656 to increment according to the slopes of the output signal PCSIG. When the output signals of all the flip-flops of the binary counter coincide with the output of the decoder, the outputs of exclusive NOR gates take 657 to 661 all at the H level. This also decreases the output signal of an AND gate 662 the level H, whereby the RS flip-flop 663 is set. At this time remains an RS flip-flop 664 rückge puts. Therefore, the output of the NAND gate has 650 the level L. This is again the output signal PLG of the NAND gate 638 inverted. As a result, the power supply to the electromagnet 329 resumed. Then, the shutter is closed in the manner described above and the film exposure, namely the third control ends.

At the time of resumption of power to the electromagnet 329 lowers the central unit 400 As a result, the current of the constant current source 528 in the motor driver circuit 403 derived, so that the transistors 532 . 533 and 529 be locked. Therefore, the supply of the current becomes the motor 213 in the same direction as for rewinding the film (in the direction of arrow X) 8 (A) ) interrupted. Thereafter, the central unit 400 the level of the output signal PCON for the light barrier 401 zoom set. This will be via an inverter 538 and a resistance 539 a transistor 540 connected through. As a result, becomes a transistor 543 locked, so that the power supply of a light emitting diode 544 is interrupted. If the RS flip-flop 663 is set, is via an AND gate 666 the output signal of an oscillator 665 to the clock input of a D flip-flop 667 created. Therefore, by the rise of a clock pulse from the oscillator 665 the RS flip-flop 664 set. This is done via an inverter 668 the output of the NAND gate 650 brought to the level H, so that the output signal PLG of the NAND gate 638 assumes the level L. This will power the electromagnet 329 off.

After that, the central unit gives 400 the wind-up signal WIND off. As a result, the current of a constant current source flows 559 in the motor driver circuit 403 to the base of a transistor 560 , so that this is turned on, thereby further resistances 561 and 562 transistors 563 and 564 be switched through. As a result, a current flows in the film take-up direction, namely, in the direction of an arrow Y 8 (A) to the engine 213 , As a result, in the manner described above, the lens barrel becomes 301 returned to its original position. Thereafter, a film-winding operation is carried out. When this is completed, the central unit will 400 the signal WIND is switched to the low level L. As a result, the current of the constant current source 559 derived, causing the transistors 563 . 564 and 560 be locked. This will power the motor 213 switched off in the Filmaufwickelrichtung.

Of course, the operations described above can also be applied to the replacement of the central processing unit 400 executed by a multi-purpose microcomputer, the control according to the flowchart in 9 performs.

In the second embodiment, the required moving distance of the lens barrel becomes 301 calculated by means of the distance measuring circuit. However, the described configuration is applicable to another arrangement in which the degree of image blur is detected and the lens barrel is adjusted to an in-focus position of an imaging optical system. Further, the first controller and the second controller may be reversed.

in the The following will be a third embodiment the adjustment for a camera described. This embodiment relates to a compact camera with adjustable magnification, by a telephoto / wide-angle switching only the magnification of a Viewfinder is changed, (where photographing with greater Focal length as telephoto photography and short-focal-length photography as wide-angle photography be designated) during the enlargement of the Shooting lens only on pressing a shutter release button is changed over.

The 10 to 12 11 are oblique views of a telephoto / wide-angle switching operation part and a partial area of a seeker coupled to the operation part. The operating part is used to switch from one magnification to another. When the camera is idle, the respective parts take in 10 shown positions.

If the wide-angle photography is selected, these parts take the in 11 shown positions. If the telephoto is selected, the parts take the in 12 shown positions.

A mode change button or dial button 701 is displaceable over the camera body in the direction of the arrow. On the dial button 701 is according to 11 and 12 an arrow mark is attached while attached to the camera body inscriptions "WIDE" and "TELE". When the dial button 701 is pushed into the position WIDE or TELE, it is held by a locking device, not shown. Below the dial button 701 is a together with this sliding lever or slide 702 arranged. The slider 702 is with a coupling groove 702b provided in the one from the bottom of the selector knob 701 downward pin 701 grips to move the slider together with the knob.

The slider 702 is also with slots 702a provided, which are parallel to the direction of movement of the button 701 extend. In these slots engage pins attached to the camera body 703 so that the slider 702 in the longitudinal direction of these slots 702a to be led. From one side of the slider 702 an arm protrudes 702c made a sliding contact as a unit with it 704 wearing. The sliding contact 704 grinds on a fixed conductor pattern, not shown, (or on fixed contacts). As a result, an electronic circuit connected to the conductor pattern is supplied with an electrical signal which determines the position of the slider 702 and the mode dial button 701 displays. At the right end surface of the slider 702 is a pen 702e placed. At the pin 702e is horizontally pivotable a cam lever 705 hinged. In the middle part of the cam lever 705 is an opening 705a trained, in which the pin 702e is introduced. At the left edge is a stop part 705c formed on a side edge of the slider 702 abuts. Furthermore, the cam lever 705 one right of the opening 705a trained bevel 705b to which a pen 707b butts on a viewfinder frame 707 is attached. On the in the opening 705a introduced pen 702e is a torsion spring 706 placed. A leg 706a the feather 706 accesses a page margin 705d of the cam lever 705 at. The other leg of the spring 706 engages the peripheral surface of a spring pin 702d on the slider 702 is attached. Therefore, the spring generates 706 a torque that drives the cam lever 705 to turn clockwise according to 10 to 12 around the pen 702e biases. The stopper part 705e becomes in this way against a side edge of the slider 702 pressed, causing the cam lever 705 in an unchanged position with respect to the slide 702 is held.

The viewfinder frame 707 has two sides that form a right angle on a horizontal plane. On the lower surface of one of the two sides is an objective lens 709 attached for wide-angle photography. At the lower surface of the other side is an objective lens 710 appropriate for the telephoto. At the intersection of the two sides is an axis 707a attached to the viewfinder frame 707 is rotatably mounted on the camera body or the like. The axis 707a is rotatably inserted into an axle hole formed in the camera body or the like. On the axis 707a is a torsion spring 708 placed. A leg 708a the feather 708 engages the peripheral surface of a pen 707b attached to the viewfinder frame 707 is appropriate. The other leg 708b engages a component, not shown. That way is the viewfinder frame 707 through the torsion spring 708 to turn counterclockwise 10 around the axis 707a biased.

On the camera body are a Rahmeneinspiegelungslinse 711 and an eyepiece 712 attached.

The 13 to 15 15 are oblique views showing essential parts of a taking lens adjusting device and a shutter control device, and control parts and a power transmission device for these two devices in the camera according to the third embodiment. Also in this embodiment, the taking lens is the optical system to be set.

In the 13 a state is shown which is reached after the completion of the photographing and before the operation of a shutter release button. In the 14 is shown a state that is reached during the advancement of the taking lens from its initial position (for "infinite") after pressing the release button to its first stroke position or the first stop. In the 15 is a state is shown, which is reached immediately before the start of a shutter operation after completion of the taking lens. In the 16 there is shown a condition in which a film is rewound from a take-up reel. The 17 Fig. 11 is a front view of the essential parts of the lens adjusting device. The 18 is a longitudinal sectional view of the lens adjusting device.

According to the 13 to 15 serves an engine 721 as a drive device for a film transport device, hereinafter referred to as a first mechanism actuator of the lens adjustment device and hereinafter referred to as the second mechanism shutter control device. A set of components from a gear 724 up to a gear 733 transmits the driving force of the motor to the film transport system and the first mechanism. gears 737 and 738 form a film transport system. Another sequence of components from a bevel gear 742 up to a wheel 748 serve to transmit the driving force to the first mechanism. parts 746 and 748 form a detector for a control circuit or control device. A series of parts of a gear 750a up to a pawl 760 (except one part 757 ) form the first mechanism. A series of parts from a connecting lever 762 up to a stop 771 form the shutter control device and the second mechanism, respectively. The first and the second mechanism are with a Elektromag Neten (as electromagnetic actuator) 757 controlled.

The motor 721 according to the 13 to 16 can be turned in forward or reverse direction. The rotation of the engine 721 will over a not shown wheel to the gear 724 transfer. One with the bike 724 combing wheel 725 also combs with a sun gear 727 included in a first planetary gear device. A wheel 726 is loose on an axle 725a of the wheel 725 fitted and rotatable with respect to this. One from the lower surface of the wheel 725 protruding part 725b is for engaging with one of the upper surface of the wheel 726 protruding part 726b arranged. About the parts 725b and 726b can the rotation of the wheel 725 to the wheel 726 be transmitted. If the wheel 725 from the in 25 rotated position shown counterclockwise, is after one revolution of the wheel 725 the wheel 726 turned. The wheel 726 combs with a wheel 732 a second planetary gear device, which will be described below. The rotation of the wheel 726 gets on the bike that way 732 transfer.

The sun wheel 727 the first planetary gear device has a lever 728 with three arm parts 728a . 728b and 728c that is loose on an axle 727a the sun gear is attached. At the arm part 728a is rotatable a wheel 729 stored with the sun gear 727 combs. The arm part 728a is with an opening for the passage of the axis of the wheel 729 provided to a Rela tivverschiebung herein. At the front end is the axle of the wheel 729 with a flange-shaped spring stop 731 Mistake. On the part of the axle between the spring stop 731 and the upper surface of the lever 728 is a spring 730 placed. The feather 730 is by the spring stop 731 and the upper surface of the lever 728 compressed and causes the pushing up of the sun gear 727 , In this way, the upper surface of the wheel 729 against the lower surface of the lever 728 pressed. Therefore, when transmitting the torque of the motor pivots 721 the lever 728 in the direction of rotation of the sun gear 721 , After that comes the wheel 729 either with a bevel gear 742 engaged or abuts against a (not shown) stop, so that the pivoting is prevented before the wheel 729 can turn. Thus, these parts form a known Planetenradvorrichtung.

To the first planetary gear device includes a second planetary gear device of wheels 732 and 733 and a lever 734 at. Around the second planetary gear device are wheels 737 and 738 arranged to receive the driving force of the second Planetenradvorrichtung.

In the second Planetenradvorrichtung that is constantly with the wheel 726 combing wheel 732 as a sun wheel. That with the sun wheel 732 combing wheel 733 serves as a planetary gear. The loose on the axis of the sun gear 732 attached levers 734 is with respect to the sun wheel 732 pivotable. The planet wheel 733 is the same as the wheel 729 the first planetary gear device at the front end of the lever 734 attached, so that a similar planetary device is formed.

The bike 733 combing wheel 737 serves to transmit the driving force to a not shown Filmaufwickelspule. The same with the wheel 733 combing another wheel 738 used to transmit the driving force to a fork, not shown.

The lever 734 has an arm part 734a which is disposed on the base end part, which is close to the axis of the wheel 732 lies. The arm part 734a grips the arm part 728c of the lever 728 the first planetary gear device. This arm part 734a acts as a stop for the lever 728 ,

Close to the front end of the arm part 728b of the lever 728 is a trigger 739 arranged, which is connected to a shutter release button. This release lever 739 serves to control the pivotal movement of the lever 728 , The release lever 739 has vertical longitudinal slots 739a , In these slots 739a are slidably mounted on a component pins 741 introduced by the release lever 739 is guided in its vertical displacement movement. At a side edge of the release lever 739 is a spring attachment part 739c educated. By a to the spring attachment part 739c attached spring 740 becomes the release lever 739 constantly biased to move upwards. At the other side edge of the release lever 739 is a lead 739b formed on the arm part 728b of the lever 728 attacks. By adjusting the stop position of the projection 739b in the vertical direction, the pivotal movement of the lever 728 controlled.

Below the release lever 739 is arranged by this operated not shown switch. This switch is connected to an electronic circuit described below.

Close to the wheel 727 is a bevel gear 742 arranged with the wheel 729 can engage. With the bevel gear 742 combs constantly another bevel gear 744 , The bevel gear 742 has a cutout on its peripheral surface 742a and on its upper end face a projection 742b , A stop applied to a component 743 serves to stop the counterclockwise rotation of the bevel gear 742 at a predetermined position by the abutment of the projection 742b ,

That with the bevel gear 742 combing another bevel gear 744 is rotatable about a horizontal axis. The rotation of the bevel gear 744 becomes a dividing wheel via a not-shown wheel 745 transfer. At the division wheel 745 is a photomask 746 attached with a variety of slots. The photomask 746 is from a photocell 747 includes, which is attached to a component, not shown. The photocell 747 is connected to a pulse generator in a control circuit described below. The photocell is the number of revolutions of the bevel gear 744 detected and supplied to the control circuit.

The bevel gear 744 combs with a wheel 748 , On an axis 748a of the wheel 748 is a spring 749 placed. The feather 749 spans the wheel 748 to rotate counterclockwise. A leg 749a the feather 749 engages one of the end face of the wheel 748 projecting spring pin on. The other leg 749b is attached to a component, not shown. Among the in 13 conditions shown becomes the lead 742b of the bevel gear 742 by the counterclockwise torque that is the wheel 748 through the spring 749 is granted, against the attack 743 pressed.

A screw shaft 750 is as a unit with a wheel 750a trained, with the wheel 748 combs. The screw shaft 750 wears a threaded ring 751 , a ratchet wheel 752 and a lens barrel 753 , which also in the 17 and 18 is shown. On the outer peripheral surface of the screw shaft 750 is a thread 750b formed with a predetermined thread pitch of for example 8 mm (see also 18 ). This thread 750b stands with a threaded element 751a engaged on the inner peripheral surface of the threaded ring 751 is trained. On the outer peripheral surface of the threaded ring 751 is a longitudinal wedge 751c formed, which is parallel to the axis of the threaded ring 751 extends. The longitudinal wedge 751c is slidable in a keyway 752b taken on an inner peripheral surface 752 the annular ratchet wheel 752 is formed on the outer circumference of the threaded ring 751 is attached. The ratchet wheel 752 and the threaded ring 751 are thus movable with respect to each other only in the axial direction. An arm 762b of the connecting lever described below 762 is against a cam surface 751b of the threaded ring 751 pressed and serves as a driver.

At the circumference of the ratchet wheel 752 are on one side of the same eight pawls 752c formed, while at the other end face a threaded element 752 d for screwing into a threaded hole 753b is formed in the lens barrel 753 is formed.

The lens barrel 753 wears a shooting lens 753c , By screwing in the threaded element 752 d on the outer tubular peripheral part of the ratchet wheel 752 into the threaded hole 753b of the lens barrel 753 this is from the ratchet wheel 752 held. The lens barrel and the ratchet wheel are axially movable relative to each other in this way. The thread pitch of the threaded element 752 d and the threaded hole 753b is for example 1 mm and is thus smaller than the thread pitch of the outer circumference threaded part 750b the screw shaft 750 and the internal thread of the threaded element 751a of the threaded ring 751 , As a result, the distance around which the threaded ring 751 axially with respect to the screw shaft during one revolution of the same, for example, eight times as large as the distance by which the lens barrel 753 axially with respect to the ratchet wheel 752 in one revolution of the same moves. The screw shaft 750 and the ratchet wheel 752 form the first actuator and the propeller shaft 750 and the threaded ring 751 form the second adjusting device for moving the taking lens 753e , According to 17 is the lens barrel 753 with an opening 753a provided to the axis of the propeller shaft 750 is parallel. In the opening 753a is one to the propeller shaft 750 parallel guide rod 756 introduced. The lens barrel 753 is along this guide rod 756 movable.

The lens barrel 753 has a pen 753d for supporting a pawl for engagement with the pawls 752c of the ratchet wheel 752 , a series of ratchet teeth 753f , which are aligned parallel to the axis of the propeller shaft and to move only in the axial direction in conjunction with the ratchet wheel 752 are displaceable, and a stop 753e for stopping a pawl 754 and guiding the ratchet teeth 753f to the movement only in the axial direction corresponding to the ratchet wheel 752 , Furthermore, the lens barrel also carries, inter alia, the connecting lever 762 , which is connected to the shutter operation device described below.

The pawl 754 that with the pawls 752c of the ratchet wheel 752 is engaged, is located immediately above the ratchet wheel and on the pin 753d mounted on a part of the lens barrel 753 is appropriate. Like in the 29 is shown, is the pawl 754 in the middle part with a laterally extending slot 754a provided, in which the pin 753d protrudes. A hook claw 754c the pawl 754 is used to engage the pawls 752c of the ratchet wheel 752 , Further, the pawl 754 with a spring attachment 754b for attaching a spring 755 and with one arm 754d provided for engagement with an anchor lever described below. The pawl 754 is around the pen 753d swivels and gets through the spring 755 constantly turning clockwise around the pin 753d biased. That way, the arm becomes 754d against an arm 759c an anchor lever 759 ge suppressed. The upper part of the hook claw hits 754c against the attack 753e that is integral with the lens barrel 753 is trained.

The anchor lever 759 is about an axis 759a pivotable, parallel to the screw shaft 750 is arranged. The anchor lever 759 has the arm 759c for the intervention with the arm 754d the pawl 754 and another arm 759b , which has the shape of a flat plate and as shown by the colon-dashed lines in the 13 and 16 to the arm 759c followed. The arm 759b is as a unit with an anchor described below 758 educated. The anchor lever 759 also has a lever part 759d who for kicking off a pen 767D a locking lever 767 is formed, a pawl part 759e , which is for locking a pawl part 765b a shutter-wing opening lever 765 is formed, and another lever part 759f , for kicking a headboard 760b a pawl 760 is trained. The anchor lever 759 is by a spring, not shown for pivoting counterclockwise to 13 to 17 biased and is characterized by a stop, not shown in his in 13 shown position held.

The electromagnet 757 serves to tighten the anchor 758 , When the electromagnet 757 being energized become the anchor 758 and the anchor arm thus forming a unit 759 attracted to a clockwise turn. Therefore, the electromagnet controls 757 the movement of the lens barrel 753 in the direction of the optical axis and the coupling of the shutter actuator and the lens barrel.

The for actuating by the lever part 759f the anchor lever 759 trained pawl 760 is at a base part hole 760a rotatably supported by a (not shown) component. The pawl 760 is thus around the hole 760a pivotable. By a mounted on a solid pin torsion spring 761 becomes the pawl 760 constantly biased to pivot in a clockwise direction. Therefore, the head part abuts 760b against the lever part 759f , The pawl 760 serves to control the stopping of the lens barrel 753 in the direction of the optical axis. A hook part 760c the pawl 760 is for engaging the ratchet teeth 753f trained together with the ratchet 752 be shifted in the direction of the optical axis.

The lens barrel 753 carries the first connecting lever 762 , which together with the lens barrel 753 in the direction of the optical axis parallel to the screw shaft 750 is movable. The connecting lever 762 is L-shaped and at the intersection of its vertical and horizontal sides with a hole 762a Mistake. In this hole 762a is one on the lens barrel 753 attached solid pin introduced. In this way is the connection lever 762 on the lens barrel 753 in a vertical plane extending parallel to the optical axis, around the bore 762a pivoted. The arm 762b , which is the vertical side of the connecting lever 762 forms, according to the foregoing, as a driver, the end face 751b of the threaded ring 751 follows when it bumps against it. The front end of the other arm 762c , which is the horizontal side of the connecting lever 762 forms stands with one arm 764b a second connecting lever 764 engaged, which connects to the first connecting lever. The connecting lever 762 is made by a spring attached to the horizontal side 763 constantly biased to move down. Therefore, the arm becomes 762b of the connecting lever 762 against the end face or cam surface 751b of the threaded ring 751 pressed while the other arm 762c against the arm 764b of the second connecting lever 764 is pressed.

The second connection lever 764 has a hole 764a , Into the hole 764a is a solid pin inserted, which is parallel to the propeller shaft 750 is arranged. There are two arms around this fixed pin 764b and 764c pivotable. The front end of the arm 764c grabs a pen 765d at the front end of an arm 765c on the closure wing opening lever 765 is formed, which is also about a parallel to the screw shaft 750 extending axis is pivotable.

The opening lever 765 forms a major part of the shutter actuator and is connected to a regulator, not shown. In the middle part of the opening lever 765 is a hole 765a educated. Into the hole 765a is a bearing axis used, which is parallel to the propeller shaft 750 extends. Radial around the hole 765a around are at the opening lever 765 a first arm 765b , a second arm 765c , a third arm 765e and a fourth arm 765g educated. In this way is the opening lever 765 pivotable about the bearing axis on the lens barrel. By one on the second arm 765c attached spring 766 becomes the lever 765 biased to pivot counterclockwise. The first arm 765b is for engagement with the pawl 759e the anchor lever 759 educated. At the in 13 However, the state shown is the first arm 765b not with the latch 759e engaged but a short distance from this. In the 13 to 16 are details regarding the relative positions between the first arm 765b and the latch 759e the anchor lever 759 omitted. However, the changes occurring with respect to the relative positions between the two elements will become apparent from the following description.

At the front end of the second arm 765c of the opening lever 765 is a pen 765d attached, which is parallel to the propeller shaft 750 extends. This pen 765d is in pressure contact with the arm 764c of the second connecting lever 764 , At the front end of the third arm 765e of the opening lever 765 is a pen 765f attached. At the pin 765f is pivotally a locking lever 767 appropriate. The locking lever 767 has three arms 767a . 767b and 767c , Between the first arm 767a and the fourth arm 765g of the opening lever 765 is a spring 768 arranged. By a stop, not shown on the arm 765e of the opening lever 765 prevents the arm 767a from his in 13 shown position pivots counterclockwise while the locking lever 767 through the spring 768 to pivot counterclockwise around the pin 765f is biased.

At the front end of the second arm 767b of the locking lever 767 a hook claw is formed. The hook claw is for engagement with a hook claw at the front end of a first arm 769B a shutter wing lock lever 769 is trained.

The third arm 767c of the locking lever 767 extends parallel to the third arm 765e of the opening lever 765 , At the front end of the arm 765e is a pen 767D attached, which is parallel to the propeller shaft 750 extends. This pen 767D serves for coupling with the lever part 759d the anchor lever 759 , At the in 13 shown state is the pen 767D through the lever part 759d pushed up while pivoting the lever arm 759 is prevented by a stop (not shown).

The locking lever 769 forms together with the opening lever 765 a main part of the shutter actuator. The locking lever 769 has two arms 769B and 769c and is formed in the shape of a bell crank. At the root of these two arms is a hole 769a educated. The locking lever 769 is pivotable at a fixed to the lens barrel 753 mounted axle mounted. By one on the arm 769B attached spring 770 becomes the closing lever 769 for pivoting counterclockwise around the hole 769a biased, the counterclockwise pivoting of the lever by a stop 771 is limited, against which the arm 769B encounters. At the front end of the other arm 769c of the closing lever 769 is a pen 769d fixed, which is inserted into a part of a (not shown) shutter wing When the lock lever 769 in his position 13 stands, with the arm 769B against the attack 771 pushes, the shutter is completely closed.

A shutter opening amount detector (not shown) configured to continuously detect the shutter opening state including the opening speed and the opening area and generate corresponding electric pulse signals is disposed in connection with the shutter vanes and together with the light barrier 747 connected to an electronic circuit.

The 19 shows a control circuit for controlling the electromagnet 757 , which is used as the electromagnetic actuator for the adjusting device and the shutter actuating device incorporated in the 13 to 15 are shown. The control circuit includes detecting means for detecting whether or not a usable recording is achievable, and a magnification changeover means for changing the recording magnification according to the result of the recognition by the recognizing means.

A switch 801 to 19 is closed when a shutter release button, not shown, is depressed to its first stop. A switch 802 will be closed when the in 10 shown mode selector button 701 pushed into his position TELE. A switch 803 closes when the release button is pressed further down to its second stop. A switch 804 is closed when in the 13 to 16 shown threaded ring 751 by a prescribed distance (according to 15 ) is advanced. The control circuit includes level-up resistors 805 to 808 , Inverter 809 to 812 and 824 to 827 , AND-links 816 to 823 , an OR gate 828 , a transistor 841 for the control of the electromagnet 757 , Holding circuits 813 to 815 with RS flip-flops, digital comparators 831 to 835 and A / D converter 830 to 843 ,

It becomes a known distance measuring circuit 829 used with a luminous element, a light receiving element, etc. When an input signal from the hold circuit 813 arrives, the distance measuring circuit 829 for measuring the distance between the camera and an object to be photographed and for supplying a distance measurement value to the A / D converter 830 put into operation. The from the A / D converter 830 Distance measurement information converted to a binary or digital value is provided by a decoder serving as a computing device 836 divided into two parts, the two counters 837 and 838 be supplied. The decoder 836 leads the counter serving as a block counter 837 the higher two bits of the ranging information and the counter serving as an address counter 838 the lower three bits of information too. The counters 837 and 838 are by an oscillator, not shown controlled. The output signals of these counters are output in synchronism with the pulses generated by the oscillator circuit and the digital comparators 832 and 835 fed.

A pulse generator 839 generates pulses according to the output signals of the light barrier 747 , In this way, a to the rotation angle of the screw shaft 750 proportional pulse signal generated, each to one of the inputs of the digital comparator 832 and the AND gate 821 is created.

A pulse generator 840 generates pulses by shaping the output of the shutter opening amount detector which detects the opening amount of the shutter vanes. In this way, a pulse signal proportional to the opening amount of the shutter is generated.

A known light measuring circuit 842 generates light measurement information on a start signal from the latch circuit 813 out.

In the in 19 shown control circuit form the digital comparator 831 and 833 , the inverter 824 and 825 and the AND gate 817 together a recognition device for detecting whether in the telephoto mode, a sharp shot is achievable. The block counter 837 and the digital comparator 835 Form a magnification changeover means for changing the recording magnification according to the recognition result of the recognition means.

In this particular embodiment, for the digital comparator 831 set a reference that represents the shortest distance for telephoto. One for the digital comparator 833 set reference value represents a work area in the exposure coupling process in the telephoto. When the reference values of the comparators 831 and 833 are set in this manner, it is ensured by the recognizing means and the enlargement change-over means that the photographing operation in telephoto-photography is carried out only within a normal range while the execution of recording in the wide-angle mode including a close-up is enabled. Therefore, the camera according to this embodiment always gives sharp images in both the wide-angle mode and the tele-mode.

The 20 Fig. 10 is a flowchart of the control in the camera according to this embodiment. In the flowchart, reference numerals Mg for the electromagnet are respectively designated 757 , "Engine" for the engine 721 , BC for a battery test, Sw-1 for the switch 801 and Sw-2 for the switch 803 used.

The function of the respective parts in this embodiment will be described below with reference to FIG 10 to 20 described.

If the camera is not used, have in the 10 to 16 shown mechanical parts according to the positions 13 , The front end of the arm part 728b of the lever 728 the first planetary gear device stands with the. head Start 739b the release lever 739 engaged, whereby a clockwise swing is prevented. The wheel 729 does not mesh with the bevel gear 742 , The relative position between the part 725b of the wheel 725 and the part 726b of the wheel 726 is in the 13 shown. The lens barrel 753 is in its most retracted from the front of the camera position and thus at rest near the electromagnet 757 ,

In the shutter actuator remain under the conditions 13 the opening lever 765 and the closing lever 769 in their closure closures. In the control circuit, the in 19 illustrated state.

(i) take pictures with short focal length (WIDE):

When the photographer selects the mode selector button 701 from an in 10 OFF position shown in the position WIDE after 11 pushes, the slider 702 and the cam lever 705 moved to the left. The pencil 707b of the viewfinder frame 707 moves along the cam surface 705b to the front end of the cam lever 705 out. Then one by the spring 708 caused torque counterclockwise the viewfinder frame 707 for pivoting about the axis 717a pretensioned, the viewfinder frame becomes 707 counterclockwise around the axis 707a pivoted as soon as the cam lever 705 moved to the left. Finally, the viewfinder frame 707 stopped in a position where the objective lens 709 for wide-angle photography perpendicular to the frame inserting lens 711 is opposite. This allows the photographer over the eyepiece 712 see a previously invisible field. By aligning the camera on the object to be recorded, the shutter release button, not shown, is depressed to its first stop position.

When the release button is depressed to the first stop, first in accordance with the flowchart in FIG 20 a battery check made. Upon detection of sufficient battery capacity, the switch remains 801 to 19 closed. Actuation of the release button turns the release lever 739 from his in 13 shown position down verscho ben. Therefore, the lead becomes 739b the release lever 739 in the in 26 pushed down position shown, the pivoting of the arm part 728b of the lever 728 allows the first planetary gear device in a clockwise direction.

When the switch 801 is closed, the input voltage level of the inverter changes 809 from the high level H to the low level L. As a result, the output voltage level of the inverter changes 809 from the level L to the level H, so that the latch circuit 813 a start signal is applied. The holding circuit 813 is therefore made ready for the delivery of an output signal. One from the holding circuit 813 generated start signal is sent to the distance measuring circuit 829 and the light measuring circuit 842 created. As a result, in a known manner by the distance measuring circuit 829 the distance and the light measuring circuit 842 the brightness measured. The measurement outputs are for the measured distance through the A / D converter 830 and for the measured brightness through the A / D converter 843 converted into binary or digital values.

The way through the A / D converter 830 obtained binary data for the measured distance are the decoder 836 and the digital comparator 831 fed. The decoder 836 supplied distance measuring data is divided into a signal from the upper two bits and a signal from the lower three bits. The upper digital digit signal becomes the block counter 837 while the lower digital digit signal is supplied to the address counter 838 is supplied.

For better clarification of the relationships between the function of the circuit according to 19 and the mechanical parts 13 the embodiment will be described below with numerical examples:
Assume that the pitch of the lens barrel adjustment of the camera of this embodiment is 0.125 mm (1/8 mm), the focal length of the taking lens is 38 mm, and the measured distance is 0.85 m; in this case, for the distance reading of 0.85 m, the lens barrel must be advanced or moved forward by approximately 1.87 mm. Therefore, the lens barrel must be moved from its "infinite" position (as shown in FIG 13 ) are advanced by 15 steps. As a result, the output of the decoder 836 to "1111", which corresponds to "15" in binary representation. From this value, the lower three bits "111" (= 7) become the address counter 838 fed. Of the upper bits "0001", "01" is decoded 836 the block counter 837 fed. From the upper bits, the two most significant digits "00" become the output of the AND gate 817 certainly. Because in this case the switch 802 is open, has the output signal of the AND gate 817 regardless of the output signals of the comparator 831 and 833 As a result, the input signal is at the block counter 837 "0". The upper two bits of the output of the block counter 837 thus become "00".

The output signal (in this case "7") of the address counter 838 is used as a reference to the digital comparator 832 created. When the pulse output of the pulse generator 839 that is the output of the photocell 747 corresponds to the angle of rotation of the propeller shaft 750 is detected in the manner described above, becomes equal to this reference value, is the digital comparator 832 an output signal. Meanwhile, the output of the block counter becomes 837 as a reference to the digital comparator 835 created. The comparator 835 counts the pulses from the pulse generator 839 if the AND gate 821 is switched through. When the number of pulses counted in this way reaches the reference value, the digital comparator gives 835 an output signal.

That is, the reference values for the digital comparators 832 and 835 are the same as those on the decoder 836 recorded distance measurement data. The distance measurement data is compared with a reference value obtained in advance at the digital comparator 831 is set. The output signal of the digital comparator 831 is via the inverter 824 the AND gate 817 fed. The AND member 817 However, it is not turned on and gives no change, because of the short focal length photographing the switch 802 is open.

Meanwhile, the through the A / D converter 843 converted into a binary value Lichtmeßdaten the digital comparator 833 for comparison with a reference value as well as the AND gate 820 fed. The reference value for the digital comparator 833 is set to a value representing a processable range of brightness for a tele-mode exposure coupling operation.

As a result of the arithmetic operation executed in the manner described above, those from the block counter become 837 and the address counter 838 obtained reference values for the digital comparator 832 and 835 set to "7" and "1".

After completion of the light and distance measuring operations in the manner described above, according to 20 the measured values for the brightness and the distance are displayed. Then gets the engine 721 Supplied with electricity. This will turn the wheel 724 clockwise 13 turned. Further, in this case, the trip lever 739 from his in 13 shown position in the position 14 pushed down.

If the wheel 724 Turning clockwise will turn the wheel 725 counterclockwise from its position 13 turned out. However, since the part 725b of the wheel 725 from the part 726b of the wheel 726 moved away, this is not rotated. The counterclockwise rotation of the wheel 325 Turns clockwise to the wheel 727 to force it to turn in a clockwise direction. That at the wheel 727 However, to the clockwise rotation of the known Planetenradvorrichtung causes pivoting of the lever 728 from his position 13 out clockwise. At this time stands the lead 739b the release lever 739 below the swivel locus or pivot plane of the arm part 728b of the lever 728 , so that this according to the representation in 14 can swing. As a result, the wheel comes 729 with the bevel gear 742 engaged. Through the intervention of the wheel 729 with the bevel gear 742 becomes the wheel 729 turned counterclockwise. This will cause the bevel gear 742 clockwise from its position 13 turned out. The clockwise rotation of the bevel gear 742 causes a counterclockwise rotation of the bevel gear 744 , Through the bevel gear 744 becomes the division wheel 745 turned clockwise. Accordingly, the photomask becomes 746 turned. As a result, it becomes proportional to the rotation angle of the division wheel 745 an electrical pulse signal is generated. This pulse signal is detected by the pulse generator 19 delivered as a rectangular shaped pulse signal. The pulse signal is sent to the digital comparator 834 and the AND gate 821 created.

The counterclockwise rotation of the bevel gear 744 causes a clockwise rotation of the wheel 748 overcoming the counteracting torque of the spring 749 so that with part of the engine 721 generated torque the spring 749 is tense. Further, the rotation of the wheel 748 over the wheel 750a to the propeller shaft 750 transfer. This will cause the screw shaft 750 turned counterclockwise.

When the screw shaft 750 is rotated in this way, a torque is successively to the threaded ring 751 on the threaded ring 751 attached ratchet wheel 752 and the relatively rotatable parts of the lens barrel 753 transfer. First arises between the threaded element 752 d of the ratchet wheel 752 , which does not have much resistance because of the small pitch, and the tapped hole 753b of the lens barrel 753 a slip. Subsequently, the screw shaft 750 , the threaded ring 751 and the ratchet wheel 752 shot together.

Then the lens barrel starts 753 axially on the ratchet wheel 752 with the increment determined by the pitch of 1 mm or speed forward in 13 to move. Together with the lens barrel 753 also becomes the connection lever 762 moved forward. If the number of the pulse generator 839 generated pulses to the digital comparator 832 set reference value (namely, in this case, as described above, in the address counter 838 set value "7"), ie, if at the photocell 747 seven pulses are detected, the output voltage of the digital comparator changes 832 from the level L to the level H, so that the comparator 832 emits an output signal. This output signal is in each case an input of the AND gates 821 and 823 entered. This will cause the two AND gates 821 and 823 connected through. (It should be noted that at this time the output voltage of the inverter 826 has the level H, since so far from the digital comparator 835 no output signal was emitted. Therefore, the AND gate becomes 823 turned on.)

If the AND gate 823 is through, gives the OR gate 828 an output signal. This turns the transistor 841 switched through, so that the electromagnet 757 is excited. By exciting the electromagnet 757 becomes the anchor lever 759 clockwise according to 13 around his axis 759a pivoted. From the arm 759c the anchor lever 759 becomes the arm 754d the pawl 754 raised. This attacks the hook claw 754c the pawl 754 between the pawls 752c of the ratchet wheel 752 , so that its further rotation is prevented. Therefore, at the same time as the rotation of the ratchet wheel 752 the axial movement of the lens barrel 753 on the threaded element 752 d of the ratchet wheel 752 completed. After this time, the screw shaft 750 and the threaded ring 751 rotated with respect to each other. The displacement value around which the lens barrel 753 moved from its initial position to the point at which the rotation of the ratchet wheel is completed, is in the example described above, 0.875 mm. This route is done by multiplying the value "7" in the address counter 838 for the digital comparator 832 with the one pitch of the ratchet wheel 752 0.125 mm corresponding increment of received. At this time, the camera is in the 14 illustrated state. When stopping the rotation of the ratchet wheel 752 However, the arm has changed 754d the pawl 754 already from the impact locus of the pen 759c the anchor lever 759 moved away. After this time Therefore, no pivotal movement of the armature lever to the pawl 754 transfer.

Even after stopping the rotation of the ratchet wheel 752 becomes the propeller shaft 750 continued to turn. Therefore, the lens barrel becomes 753 together with the ratchet wheel 752 , the ratchet teeth 753f and the threaded ring 751 with one of the pitch of the threaded part 750b the screw shaft 750 corresponding increment or speed further moved forward. This forward movement is terminated when by the digital comparator 835 an output signal is emitted.

That is, according to the above, the AND gate becomes 821 turned on when the digital comparator 832 emits an output signal. This is followed by the AND gate 821 to the digital comparator 835 the output signal of the pulse generator 839 created. However, in accordance with the foregoing, as with the digital comparator 835 Set te displacement or reference value equal to the value "1" of the output signal of the block counter 837 is by the first pulse from the pulser 839 at the digital comparator 835 caused the output of an output signal. Therefore, the output of the inverter changes 826 from the H level to the L level. This becomes the AND gate 823 blocked. Likewise, the OR gate 828 blocked. This turns the transistor 841 switched off, so that the electromagnet 757 is excited. This will bring the anchor 758 and the armature arm 759b until then by the electromagnet 757 were attracted, free of this. By the force of a spring, not shown, then the anchor lever 759 counterclockwise about its axis 759a pivoted. The lever part hits 759f the anchor lever 759 the head part of the pawl 760 , causing the hook claw 760c between the ratchet teeth 753f attacks, as is in 15 is shown. This will be done by the pawl 760 which together with the ratchet wheel 752 Ratchet teeth moved parallel to it 753f recorded. As a result, the lens barrel becomes too 753 stopped. The distance that the lens barrel advances until then, after the rotation of the ratchet wheel 752 has ended, is 1/8 of the pitch of the threaded part 750b the screw shaft 750 (and therefore 1 mm). In this embodiment is for the threaded part 750b the screw shaft 750 The pitch chosen is 8mm, while the pitch of the threaded member 752 d 1 mm. These slopes match the split block and address layout 19 match. In the example described above, the focus is completed when the lens barrel has been moved from its home position by the total required travel distance of 1.875 mm.

According to the foregoing, the engine is rotating 721 continue after the lens barrel 753 through the pawl 760 is fixed. This is also the screw shaft 750 continued to turn. Therefore, only the threaded ring moves 751 continue on the propeller shaft 750 forward, while the lens barrel 753 and the ratchet wheel 752 are held. As a result, the threaded ring occurs 751 from the front end of the ratchet wheel 752 out, like it is in 15 is shown. If the threaded ring 751 has emerged by a predetermined distance, the in 19 but not in the 13 to 18 shown switches 804 automatically closed so that the input voltage of the inverter 812 changes from the H level to the L level. Thereafter, the output voltage changes to the H level, so that the holding circuit 815 is put into operation. At this time is not shown, to the holding circuit 815 connected motor control circuit the rotation of the motor 721 completed.

When the condition is reached, according to 15 the threaded ring 751 by the given distance from the front end of the ratchet wheel 752 stands out, becomes the arm 762b of the already stopped lens barrel 753 carried connecting lever 762 through the front face 751b of the threaded ring 751 triggered and around the hole 762a panned forward. Therefore, the other arm 762c of the connecting lever 762 overcoming the downward pulling force of the spring 770 moved upwards. Then the downward pushing force on the arm part becomes 764b of the connecting lever 764 diminished so that the connecting lever 764 over the pen 765d by the force of the spring 766 is pivoted clockwise, which is the arm 765c of the opening lever 765 biases. At the same time the opening lever 765 pivoted counterclockwise about its center of rotation. When the opening lever 765 swung to a small extent counterclockwise, the arm becomes 765b through the claw part 759e the anchor lever 759 established. In this case, the shutter wings are not opened, since the pivot angle of the opening lever 765 is very small.

When the photographer then pushes the shutter button further down, the switch becomes 803 to 19 closed. This decreases the input voltage of the inverter 811 the level L on. This preserves the output voltage of the inverter 811 the level H. This is the holding circuit 814 put into operation. Therefore, the AND gate gets 818 Input signals from the two holding circuits 814 and 815 so that it is switched through. Through the AND gate 818 are inputs to the AND gates 819 . 820 and 822 created. Until then, those were already from the A / D converter 843 converted into a binary value Lichtmeß data to the AND gate 820 created. Therefore, the AND gate becomes 820 switched through, so that the Lichtmeßdaten the digital comparator 834 be supplied.

At the same time this is the AND gate 822 to which the output signal of the AND gate 818 is applied, also turned on, so that the transistor 841 to control. This will cause the electromagnet 757 excited.

When the electromagnet 757 among the in 15 conditions are excited by the electromagnet 757 the anchor 758 and the arm 759b the anchor lever 759 dressed. This will be the anchor lever 759 clockwise about its axis 759a pivoted. This is from the pawl part 759e the lever of the arm 765b of the opening lever 765 released so that it can pivot counterclockwise. As a result, under the control of the regulator, not shown, the opening lever 765 by the force of the spring 766 Pivoted at constant speed counterclockwise. This pivotal movement of the opening lever 765 causes that together with the arm 765e the same of the locking lever 767 is pivoted. The hook claw at the front end of the arm 767b of the locking lever 767 comes with the hook claw at the front end of the arm 769B the closing lever 769 engaged. Then the arm becomes 769B against the force of the spring 770 in the direction of the stop 771 pushed up. Therefore, the locking lever causes 767 in that the closing lever 769 clockwise around its hole 769a swings. As a result, the shutter wings are opened.

Further, when the armature lever 759 pivots in the manner described in the clockwise direction, the lever part 759f from the pawl 760 moved away. However, because the pawl 760 with the ratchet teeth 753f of the lens barrel 753 engaged, the position of the pawl remains unchanged.

If with the pivoting of the closing lever 769 clockwise in the manner described above, the shutter blades, not shown, are opened, the exposure begins. Then, from the shutter opening degree detector (not shown) located near the shutter wings, the opening degree of the shutter is detected in the form of an electrical pulse signal. This detector is as a unit with the pulser 840 to 19 educated. The output of the detector is from the pulser 840 delivered in the form of rectangular pulses.

Therefore, when opening the shutter wings of the pulse generator 840 Pulses representing the shutter opening degree (or opening degree). The pulse signal becomes the AND gate 819 fed. At this time is due to the AND gate 819 already the output signal of the AND gate 818 at. Therefore, the AND gate becomes 819 immediately switched through when the pulse signal from the pulse generator 840 is created. As a result, that is from the pulser 840 delivered pulse signal via the AND gate 819 to the digital comparator 834 created. Meanwhile, even in a binary value converted Lichtmeßdaten from the A / D converter 843 over the AND gate 820 the comparator 834 fed. Therefore, the digital comparator compares 834 the shutter opening amount with the Lichtmeßwert.

When the shutter opening amount coincides with the photometry value, the output voltage of the digital comparator changes 834 from the L level to the H level. As a result, the output voltage of the inverter changes 827 to the level L. This causes the AND gate 822 , the OR member 828 and the transistor 841 blocked. As a result, the electromagnet 757 energized. The arm 759b the anchor lever 759 and the anchor 758 , so far from the electromagnet 757 were attracted, move away from this. By a spring, not shown, the anchor lever 759 pivoted counterclockwise. The arm part 759d the anchor lever 759 pushes the pin 767D of the locking lever 767 high. Then the locking lever pivots 767 clockwise around the pin 765f , This will be the arm 767b of the locking lever 767 from the arm 769B of the closing lever 769 moved away. The feather 770 then can the locking lever 769 swivel counterclockwise. This completes the exposure process with the shutter wings fully closed. be when the arm 769B of the closing lever against the stop 771 encounters. The various operations before the completion of the exposure become during a counterclockwise rotation of the wheel 725 from his position 13 brought about. Therefore, during this time, no driving force from the wheel 725 to the wheel 726 transfer. The wheel 732 is also not rotated.

When the photographer then releases the shutter release button, the switch will turn on 803 open, which via the motor control circuit, not shown, the reverse rotation of the motor 721 is brought about. This will cause the wheel 724 counterclockwise and the wheel 725 turned clockwise. This results in the wheel 727 a counterclockwise torque. As a result, also arises on the lever 728 a Gegenuhrzei ger torque. This causes a pivoting of the lever 728 counterclockwise from its position 15 , This will cause the wheel 729 from the bevel gear 742 moved away. Therefore, the Driving force of the motor 721 no longer to the propeller shaft 750 transfer. Thereafter, the biasing force of the spring causes 749 clockwise rotation of the propeller shaft 750 clockwise. The bevel gear 744 is turned clockwise while the bevel gear 742 is rotated counterclockwise.

The clockwise rotation of the propeller shaft 750 to 15 causes the threaded ring 751 and the ratchet wheel 752 at the screw shaft 750 turn clockwise together with this. This will make the lens barrel 753 on the ratchet wheel 752 with respect to this moves axially and out of position 15 withdrawn.

When the ratchet wheel 752 turns clockwise, the pawl is 754 detached from the ratchet wheel. Thereafter, the pawl is by the spring 755 in a clockwise direction 13 pivoted.

When the ratchet wheel 752 in the in 13 shown position is, by a stop, not shown, the further rotation of the ratchet wheel 752 with respect to the lens barrel 753 prevented. Therefore, an axial relative movement occurs between the threaded ring 751 and the screw shaft 750 on. This will make the lens barrel 753 together with the threaded ring 751 at the screw shaft 750 in the original position (after 13 ) withdrawn.

Because during this process the threaded ring 751 from his position 15 is retracted, the returns against the front face of the threaded ring 751 pressed arm 762b of the connecting lever 762 from the forward inclined position in his in 13 shown vertical position back. The other arm of the connecting lever 762 then press the arm part 764b the other connecting lever 764 down. Therefore, by the spring 763 a torque in a clockwise direction over the arm part 764c of the connecting lever 764 on the arm 765c of the opening lever 765 exercised. This will be the opening lever 765 to its original position 13 brought back.

If after that the screw shaft 750 continues to turn clockwise, the lens barrel 753 moved back to its original position. Meanwhile, the wheel 725 Turns clockwise, which engages the wheel 725 attached part 725b at the part 726b of the wheel 726 so that it is turned clockwise. This rotation becomes the one with the wheel 726 combing wheel 732 transfer. This will do it with the wheel 732 combing wheel 737 turned. The rotation of the wheel 737 causes the rotation of a coil, not shown. This will wind the film loaded in the camera onto the spool. Upon completion of the film transport, a count signal is generated by a picture counter device (not shown). Upon this signal, the motor is stopped. At the same time the circuit is after 19 reset.

(ii) taking a picture of a relatively bright Object at a distance within a normal range in Tele mode:

When the photographer selects the mode selector button 701 to the right according to 10 shifts to bring the arrow mark on the knob with the mark "TELE" in coincidence, is also the slider 702 moved to the right. The pencil 707b on the viewfinder frame 707 As a result, it becomes along the inclined surface 705b of the cam lever 705 moved forward according to the drawing and then to a side edge of the cam lever 705 emotional. Therefore, the pen becomes 707b from the cam lever 705 move forward according to 10 pushed. This way, the viewfinder frame becomes 707 clockwise about its axis 707a pivoted. As a result, the finder frame is finally adjusted so that the frame inserting lens becomes the objective lens 710 is opposite to the telephoto at right angles. In this way, the finder optical system is set to the position for the telephoto.

The rightward movement of the slider 702 The following also moves together with the slider 702 the sliding contact 704 , At the in 12 shown position is connected to the fixed contact or the conductor pattern in conjunction with the sliding contact 704 the closing of the switch 802 to 19 brought about. This is done by the inverter 810 an output signal to the AND gate 816 created.

When the photographer then pushes the release button to the first stop, the switch becomes 801 closed. Thereafter, with a control circuit, not shown, a battery check as shown in the flowchart in 20 executed. Pressing the release button also turns the release lever 739 from his position 13 pushed down. This will be the lead 739b the release lever 739 in his position 14 or 15 offset down. Therefore, in the pivoting range of the lever 728 the Planetenradvorrichtung no longer part for a kick, so that the lever can pivot clockwise. When the switch 801 is closed, the holding circuit 813 put into operation. Thereafter, in the same manner as described above (i), the start signal from the hold circuit is applied 813 measured the distance and the brightness. In tele mode, however, the output signal of the latch circuit 813 causes a circuit to turn off the AND members 816 and 817 as well as the inverters 824 and 825 the output of the block counter 837 (as a shift or reference value for the digital comparator 835 ) is set to a value different from that in the wide-angle mode.

Specifically, when the output signal of the latch circuit is applied 813 to the AND gate 816 for its switching through an input signal to the AND gate 817 created. Meanwhile, the AND gate receives 817 over the inverters 824 and 825 the output signals of the digital comparator 831 and 833 , Therefore, the AND gate becomes 817 turned on when the output voltages of the digital comparator 831 and 833 have the level L, namely, when the measured distance and brightness values are smaller than those at the digital comparators 831 and 833 are set reference values. In this case, the block counter receives 837 an input signal representing the binary distance measurement value in which the higher two bits are "1" and "1", respectively.

If the AND gate 817 is turned on, therefore, the output of the block counter 837 to "11xy" in binary form. Accordingly, the reference value for the digital comparator 835 changed. Further details of the operation in this case will be described below using the same numerical values as in section (i).

Assuming that the focal length of the taking lens is 38 mm and the measured distance is 0.85 m, the lens must be shifted by about 1.875 mm. Assuming that the increment in the advancement of the lens barrel is 0.125 mm, the lens must be pulled out or advanced by 15 steps. This value 15 becomes the binary value "1111". The lower three bits "111" (= 7) of this binary value become the address counter 838 fed. Of the bits "0001" at the higher digits, the lower two bits "01" are output from the decoder 836 the block counter 837 fed.

According to the above, the object is at a predetermined normal distance and has a brightness higher than a predetermined value. Therefore, the output voltages of the two digital comparators have 831 and 833 the level L. As a result, the AND gate 817 through, so that the block counter 837 a signal is supplied. This will be from the four bits of the block counter 837 output the higher two bits to "11". Thus, the output of the block counter becomes 837 to "1101" (= 13). This output signal is used as the reference value of the digital comparator 835 used. That is, the reference value at the digital comparator 835 represents 13 steps while the reference value is at the digital comparator 832 Represents 7 steps.

The following operations in the circuits and on the mechanical parts are the same as those described in the preceding section (i) so that they are here be omitted.

In the described circuit arrangement, the third bit corresponding to the movement distance between 4 mm and 12 mm becomes the signal of the block counter 837 excreted. In the camera according to this embodiment, however, an auxiliary lens, not shown, is designed so that the focal length of the taking lens is changed by the fitting behind the shutter, while the lens barrel is moved between 5 mm and 13 mm. Focusing in telephoto mode is performed by the so-called front group extraction method used with variable magnification cameras. When pulling out the lens according to changes in the subject distance, the lens is advanced to the same extent as in the wide-angle mode.

(iii) Photographing in the tele mode at a near but outside the normal range lying object distance:

In the same manner as in section (ii), since the photographer is to photograph in the tele-mode, the mode selector button is set 701 in the in 12 shown position. This will make the switch 802 to 19 closed. When the release button is pushed to the first stop, the holding circuit becomes 813 in operation and as in section (ii) the AND gate 816 connected through. However, since the object distance is out of the normal range, the output voltage of the distance measurement receiving digital comparator changes 831 from the level L to the level H. Therefore, the AND gate outputs 817 no output signal for the block counter 837 from. The input signal of the block counter determining the higher two bits 837 and the higher two bits of the output thereof become "00". Therefore, the one at the digital comparator 835 set shift or reference value the same as in he wide-angle mode. The setting device for the taking lens is given the same moving distance as in the wide-angle mode described in the section (i).

The camera is thus configured to set the same moving distance as in the wide-angle mode while the camera is set to the tele-mode. This constitutes important features of this embodiment. This design effectively prevents erroneous recording.

Furthermore allows the design for automatically switching the camera to the wide-angle mode error-free photography up to short distances and prevents an error in photographing in near distance in the tele mode. That is, in the case of the camera according to this embodiment can be up to a short distance even in telephoto mode be photographed by the Lens movement range for the Wide-angle mode is used, if the shooting distance outside the normal range. This will make the camera possible a faulty recording reduced.

Furthermore, with the exception that the digital comparator 831 an output signal of level H for the inverter 824 and that on the digital comparator 835 set reference value is the same value as in the case of the wide-angle mode, because of the AND gate 817 no output is output, the functions of the circuit, the focus adjusting device and the exposure control device in this case are identical to those described in the section (i), so that the description thereof is omitted here.

(iv) Taking pictures in the telephoto mode with a dark object

Since the tele-mode is selected, the switch is similarly as in section (iii) 802 to 19 closed. Then, by pressing the release button until the first stop, the switch 801 is closed, gives the holding circuit 813 a start signal. This becomes the AND gate 816 connected through.

As the brightness of the object in this case is lower than that at the digital comparator 833 set reference value, takes the output voltage of the digital comparator 833 the level H on. This maintains the output voltage of the inverter 825 As a result, regardless of the output of the digital comparator 831 (regardless of the object distance) the AND gate 817 blocked. As a result, in the manner described in section (iii) above, the digital comparator will be used 835 set reference value the same value as in the wide-angle mode. Therefore, the lens path of the taking lens becomes the same as that in the case of the wide-angle mode. That is, in this case, the movement of the lens is also controlled as in the wide-angle mode.

Although this in the 19 is not shown, may further to the non-inverting input (reference value input) of the digital comparator 833 a film sensitivity input device is connected, the output of which is changeable according to information about the sensitivity of the film. Furthermore, in the case of a camera with a flash unit, the output signal of the digital comparator can be indicated by a signal indicating that the flash unit is fully charged or ready for use 830 be brought to the level L.

(v) Expiration of the movie in the camera until the end:

When an exposure operation of the film is completed and the photographer releases the release button, a control circuit, not shown, causes the rotation of the motor 721 in the film winding direction at the moment of opening the switch 803 to 19 , After that, the in 15 shown wheel 724 counterclockwise and the wheel 725 turned clockwise.

As a result, the rotation of the wheel causes 727 counterclockwise that over the wheel 729 on the lever 728 a torque is applied counterclockwise. The lever 728 This will make his in 15 pivoted out position shown counterclockwise. This will be the wheel 729 from the bevel gear 742 moved away. The lever 728 and the wheel 729 get into their positions 13 , The release lever 739 moves from his position 15 in his position 13 , That's where the lead comes from 739b the release lever 739 with the arm part 728b of the lever 728 in engagement, so that its Uhrzeigerschwenkung is prevented.

If the wheel 725 rotated to a certain extent and the part 725b of the wheel 725 against the part 726b of the wheel 726 pushes, the wheel starts 726 in the same direction as the wheel 725 to turn. That's why it's with the wheel 726 combing wheel 732 counterclockwise to 13 turned. As a result, the wheel becomes 733 turned clockwise. This will over that with the wheel 733 combing wheel 737 rotated, not shown, the film take-up reel. As a result, the film is wound up on the spool.

If, after the elapse of a predetermined period of time from the completion of this operation, no count signal is generated from the picture counter device, not shown, the control circuit, not shown, causes the counter-rotation of the motor 721 , As a result, from the position to 13 the wheel 725 turned counterclockwise. This results in the wheel 727 a torque in a clockwise direction. Therefore acts on the wheel 729 a clockwise torque on the lever 728 , However, since the arm part 728b of the lever 728 against the lead 739b the release lever 739 encounters, can the lever 728 not to be moved. Therefore, the wheels turn 727 and 729 empty, while the lever 728 in his position 13 stop.

If the wheel 725 one turn, the part hits 725b of the wheel 725 against the part 726b of the wheel 726 , Therefore, after one revolution of the wheel 725 the wheel 726 in the same direction as the wheel 725 turned. In this way acts on the wheel 732 a torque in a clockwise direction. As a result, over the wheel 733 a clockwise torque on the lever 734 caused. This will be the lever 734 clockwise about the axis of the wheel 732 pivoted. Thereafter, according to 16 the wheel 733 from the wheel 737 moved away and by bike 738 engaged. in this way, the rotation of the wheel 732 over the wheel 733 to the wheel 738 transfer. Therefore, over the wheel 738 rotated the driver fork, not shown, so that the film is rewound.

During rewinding of the film, the lens barrel and shutter actuator can not be moved even when the shutter button is pressed in an attempt to take a photograph, for the following reasons 16 by pressing down the release lever 739 the stop for the arm part 728b of the lever 728 is removed, now serves the arm part 734a of the lever 734 as a stop against which the other arm part 728c of the lever 728 encounters. Therefore it is not possible to use the lever 728 to pivot in a position where the lever is the wheel 729 with the bevel gear 742 engages. The force, the lever 734 in the in 16 illustrated position is a component of the force of engagement between the wheels 736 and 738 , This force component is considerably stronger than a lever pivoting force 728 , This pivoting force is due to the spring force of the spring 730 determined, which may not be too large. Due to the engagement force component, therefore, even when the lever is turned clockwise 728 the lever 734 never counterclockwise from its position 16 pivoted. The force also prevents the lever 728 pivots clockwise.

After the film is completely rewound, an unillustrated switch for detecting the presence or absence of the film is opened. Then, by the control circuit, not shown again a rotation of the motor 721 in the film take-up direction to some extent, and then the motor stopped.

According to the above described third embodiment the adjustment device is applied to a camera whose viewfinder and their recording lens independently interact. However, the application of the adjustment device is not on the camera of this design limited. Rather, the described adjustment is also except for a camera, switchable between tele mode and wide angle mode is applicable to a camera with a zoom lens.

• (a) Kamera, die mit einem Blitzgerät versehen ist, die für die Tele-Betriebsart und die Weitwinkel-Betriebsart unterschiedliche F-Zahlen hat und die unterschiedliche Belichtungsbereiche bei dem Betrieb in der Tele-Betriebsart und der Weitwinkel-Betriebsart hat.
• (b) Kamera, die zum automatischen Umstellen auf die Weitwinkel-Betriebsart in dem Fall ausgebildet ist, daß die Objektentfernung außerhalb des Blitzsynchronisierungsbereichs in der Tele-Betriebsart, aber innerhalb des Bereichs für die Weitwinkel-Betriebsart steht.
• (c) Kamera, bei der die Funktion gemäß dem vorstehenden Abschnitt (b) durch das Betätigen eines externen Schalters und nur bei einer Automatik-Betriebsart ausgeführt wird.

Therefore, the adjustment device is not limited in its application to the above-described embodiments, but may be applied to cameras having the following characteristics:

• (a) A camera provided with a flash device having different F-numbers for the tele-mode and the wide-angle mode and having different exposure ranges in the operation in the tele-mode and the wide-angle mode.
• (b) Camera adapted to automatically switch to the wide-angle mode in the case where the object distance outside the flash sync area is in the tele-mode but within the wide-angle mode area.
• (c) A camera in which the function according to the above item (b) is performed by operating an external switch and only in an automatic mode.

The first, the second and the third embodiment were under described in the specification that in the camera either a large Focal length or a short focal length can be adjusted. It but it is obvious that the also described in an arrangement for selecting a plurality of Focal lengths or an arrangement with a zoom lens thereby can be applied that a Focal length selector made adjustable between three or more than three positions will and that one Decoder and the like for changing the Movement distance of the optical pickup system according to the selected position of this Focal length selector is trained.

With The adjustment described thus becomes an extraordinary Advantageous device specified, which is a fast and very Precise adjustment of the optical system of the camera allows.

Claims (14)

Device for a camera, comprising: (a) a first adjusting device ( 311 ; 752 ) for moving an optical unit ( 301 . 753c ) by a turning operation; (b) a second actuator ( 307 ; 750 ) for moving the optical unit by rotation gear, wherein the second adjusting device can perform the rotation independently of the turning operation of the first adjusting device; (c) a first signal-forming device ( 404 . 405 . 406 . 407 ; 829 ) for forming an in-focus signal; (d) a second signal forming device (swT / W; 802 ) for forming a focal length signal; and (e) a computing device ( 400 ; 837 ) which determines at least the moving distance of the second adjusting device according to the output signals of the first signal-forming device and the second signal-forming device, characterized in that the second signal-forming device (swT / W; 802 ) forms the focal length signal as a function of the object distance and independent of a set viewfinder magnification. Device according to Claim 1, characterized in that the first signal-generating device comprises means ( 404 . 405 . 406 . 407 ; 829 ), by means of which information relating to an object distance is automatically detected. Device according to claim 1 or 2, characterized in that the first adjusting device moves the optical unit due to the actuation of an actuating member ( 201 ) to trigger the recording process. Device according to one of claims 1 to 3, characterized in that the second adjusting device moves the optical unit due to the actuation of an actuator ( 201 ) to trigger the recording process. Device according to claim 4, characterized in that the actuating member for triggering the picking operation, a shutter release element ( 201 ) having. Device according to one of claims 1 to 5, characterized that the Computing device, the movement path of the first adjusting device due the output signals of both the first signal generator and the second signal-generating device determined. Device according to one of claims 1 to 6, characterized in that the first adjusting device means ( 213 ; 721 ) for automatically moving the optical unit. Device according to one of Claims 1 to 6, characterized in that the second adjusting device comprises means ( 213 ; 721 ) for automatically moving the optical unit. Device according to one of Claims 1 to 6, characterized in that both the first actuating device and the second actuating device have means ( 213 ; 721 ) for automatically moving the optical unit. Device according to one of Claims 1 to 9, characterized in that the optical unit ( 301 ; 753 ) belongs to the facility. Device according to one of Claims 1 to 10, characterized in that the optical unit has a receiving objective ( 302 ; 753c ) having. Device according to one of claims 1 to 11, characterized in that the first adjusting device has a threaded portion ( 311d ; 752 ) for transmitting a driving force. Device according to one of claims 1 to 12, characterized in that the second adjusting device has a threaded portion ( 307 ; 750 ) for transmitting a driving force. Camera, characterized by a device according to a the claims 1 to 13.