DE2508358A1 - Flash lamp holder for photographic camera - preventing use while used bulb is facing forwards has detector responsive to state of terminals - Google Patents

Abstract

Flash lamp holder for photographic camera for automatically performing a series of steps comprises terminals (482, 484) which are capable of connection to each bulb and at which a given electrical state occurs when all bulbs have been ignited. A flash bulb ignition device (380) is connected to the terminals for igniting the lamps in a selected order in synchronisation with the series of steps and there is a detector (476) which is responsive to the state of the terminals. A lock (478) responds to a detector signal by preventing further steps at the end of the sequence when all bulbs have been ignited.

Description

Device for producing flash photos as well as with the Apparatus Equipped Photographic Camera The invention relates to apparatus for making flash photos and one with such a device equipped photographic camera.

In the field of flower light photography have recently been Developed arrangements in which several flash lamps are combined to form a unit within which they are arranged along a straight line. In particular was designed to be used in conjunction with a largely automatic one Camera developed such an arrangement, which is designed on both sides and has five flashlights on two sides facing away from each other.

such an arrangement is used in conjunction with an automatically operating one Using the camera, it is thus possible to perform photographic work cycles in quick succession to run, as it is not necessary after every exposure process, to bring about a mechanical switching movement or flashlights in their position of use bring to.

As detailed in U.S. Patent Nos. 3,598,984 and 3,598,985 described, these double-sided arrangements of flash lamps form compact units, because the flash lamps arranged on opposite sides are nested with one another are. The ignition connections of each Flashbulbs of one of these Arrangement are using the technology of printed circuits with an after fastening strip protruding from the bottom, which is connected to five input contacts on each flat side, a common supply line and a conductive surface for closing a circuit is provided. If the fastening strip protruding downwards is converted into a matching one Recording device of a camera of the type mentioned introduced, are electrical Connections to the five input contacts of a group from their position of use engaging flash lamps, and here the conductive surface serves as a Contact for closing a circuit, by means of which the control device of the Camera is set to flash mode. This mode of operation and the main features an automatic camera of the aforesaid type are detailed in U.S. Patent Application 333 331 of February 16, 1973.

So that the åenigen flashlights can be ignited one after the other, facing the subject, the camera is inside with flash ignition circuits Mistake. Typical circuits of this type are shown in U.S.A. Patent 3,676 045. These circuits usually have individual ignition networks, which come into effect in connection with a control circuit to each time when the camera is actuated, the next candidate flash lamp will be ignited0 This control circuit is dependent on certain characteristics of the connections of the individual flash lamps brought into effect.

Flash lamps of the type with which sequential or logically working Ignition circuits must work together, each have a glass bulb in a certain tightness of a flammable thread-like material or the like and a combustion assisting gas are included0 The combustible Part of the flash lamp is in close contact with the filament of a terminal device arranged in conductive connection with the input lines of the flash lamp stands. If a current is supplied to the flash lamp via its connections, it heats up the ignition filament quickly except for the point of combustion of the thread-like Material so that the flashlamp is ignited. After ignition, both the Ignition filament and the filamentary combustible material melted and / or converted into an ash residue which remains in the glass flask. this has the consequence that the circuit, which was previously over the connecting lines through the Glass bulb passed through, is interrupted, and that opposite the switching device, to which the filament was connected, an infinitely great resistance to the effect comes. If the ignition filament or the filamentary material is not completely burned and therefore to short-circuit the connections of a flash lamp that are actually to be disconnected leads, a relatively high resistance comes into effect at the connections. The flash lamp ignition circuits respond to the presence of a predetermined ohmic resistance between the connections of an already ignited or not yet ignited flashlight, depending on this during a certain photographic work cycle to choose the next possible flash lamp for ignition 0 After the five flash lamps present on one side of an arrangement of the type described have been consumed, the user pulls the flash lamp assembly from the associated Version, turns it around and puts it back into the corresponding version of the Turn the camera on to move the flash bulbs that have not yet been used to their position of use so that the next five photographic work cycles can be carried out can.

In many cases it can happen that the user of the chamber, when he wishes to capture a certain moment photographically, that Overlooked fact that all flashbulbs are already on the side just used of the flash lamp assembly have been used up.

If the flash lamp arrangement is not changed in the manner described or replaced by a new flash lamp assembly, the next one is recorded Image spoiled due to insufficient lighting.

The invention is directed to a flashlamp actuator for directed a photographic camera of the type which for use in Connection with an array of flash lamps is intended, each of which is opposite The camera is directed forward to illuminate an on increasing scene to enable. As soon as the last of the flash lamps in their position of use is consumed, this device causes the implementation of another photographic Working cycle is prevented if the flash lamp arrangement is not as described Turned around or replaced by a new flash lamp assembly 0 Im In the case of an embodiment of the invention, a camera is used, its mode of operation is largely automated, and which is a complicated sequence of work steps between a first and a last work step to a photographic Perform work cycle.

The device according to the invention responds as soon as all after front-facing flash lamps of the relevant arrangement are used up, namely in such a way that the first work step of the next work cycle can be carried out leaves, however, that the further execution of the program is prevented. In an inventive Arrangement provides the device with a perceptible warning signal as soon as the implementation the work steps following the first work step has been blocked.

If the automated camera is designed as a single-lens reflex camera, the first and only permitted work step is that of manufacturing A recording serving beam path of the camera is interrupted.

Simultaneously with this there is a warning lamp on the camera body is arranged near the Lintrittsoptik of the associated viewfinder, turned on to to notify the user that it will be done without replacing the artificial light source it is not possible to run a photographic work cycle 0 The warning lamp can expediently be arranged at a distance from the entrance optics of the viewfinder of the camera be, because if the camera user only has a dark background in front of them, he is correspondingly better able to immediately notice the lighting of the warning lamp, although the warning lamp is separated from the viewfinder by a distance a device for actuating flash lamps are created by the invention, which is characterized in that a detector arrangement is present which on an electronic operating state responds, which is based on the with a flash lamp connected terminals of a circuit for selecting and igniting a specific flash lamp adjusts. As soon as this operating state corresponds to the fact that all forward-facing flash lamps of a flash lamp assembly are consumed, generated the detector arrangement a unique signal that represents this operating state. The exposure device also has a blocking device or an arrangement on, which responds to said unique signal in order to carry out or Completion of a photographic work cycle that has already been started on an experimental basis to prevent. This act of addressing the detector and locking arrangements It necessarily happens very quickly because it is an electronic process acts. Thus, the locking device of the device also speaks to an operating state by which the imminent ignition of a last flash lamp of the Arrangement is represented so that the photographic work cycle can finish, in which the last usable flash lamp is consumed.

For example, speaks in one embodiment of the invention Locking device to a specific signal that the process of a work step after an exposure process to enable the camera to do that To end the photographic work cycle in which the last flash lamp of the arrangement is ignited.

If the automated camera is an Elapp camera, which can be folded up after use, can according to a further blerkmal the invention the perceptible warning signal in connection with the opening of the camera be generated0 The generation of such a warning signal is possible, because, in the automated camera, interlock switches or the like are necessarily required are present that prevent the battery from being drawn while the battery is running the camera is not in use The invention and advantageous details the ore in manure are illustrated below with the aid of schematic drawings of exemplary embodiments Explained in more detail, It shows: FIG. 1 a partially broken away perspective view Representation of a fully automatic handheld camera with a device for manufacturing of flash photography; 2 shows the circuit diagram of a in connection with the control device the camera of Figo 1 to be used control circuit; Figures 3 and 3A each have one Part of a logical block diagram showing the sequence of operations which take place during certain work cycles of the camera according to FIG. 1, wherein Figure 3A is a continuation of the lower part of Figure 3; 4 shows a table of values, which applies to the operating processes which are carried out with the aid of the control device of the camera be carried out according to Fig. 1, the input and output signals in logical form of gates belonging to the circuit of FIG. 2, wherein the illustration in FIG. 4 applies to the case that the camera is used to produce flash photographs should be used; Fig. 5 is a view of part of the switching devices of Camera according to Figure 1; 6 is a partially broken away perspective view ! 'illustration of a further switching device of the camera according to Figo 1; Fig. 7 the top view of a part of the shutter of the camera according to FIG. 1, from which the locking position a device for tracking the objective can be seen; Fig. 8 a simplified circuit diagram of an Elitzlampenzünd- shown in Fig. 2 as a diagram block and sequential switching network; 9 shows the circuit of an embodiment of a detector and locking device; Fig. 10 shows the circuit of a further embodiment of a Detector and barrier arrangement; Fig0 11 shows the circuit of a further embodiment a detector array; 12 shows the circuit of a warning device; Fig0 13 a partially broken away perspective illustration of a in the camera according to Figure 1 existing locking switch; and Fig. 14 is a perspective Representation of part of the camera according to FIG. 1, from the details of the viewfinder can be seen.

In Figo 1 is a largely automated single-lens reflex camera 10 shown, in which the invention can be applied0 The various articulated interconnected housing parts of the camera 10, to which a rear wall 12, a Front wall 14 and an exposure regulator housing 16 are attached to a base part hinged so that they can be nested together when folded. If the camera 10 is folded up from its position of use shown in FIG. 1, they take on a compact, flat shape so that they can be carried comfortably by the user lets, z * Bo in a pocket of a garment0 The various joints or Hinges for connecting said housing parts are not shown in detail in FIG but it should be noted that they are on axes 20, 22 and 24 as well as on the are arranged lower rear part of the exposure regulator housing 16, Is the The camera has been opened when a recording is to be made Back wall 12, the front wall 14 and the exposure regulator housing 16 together with an opaque, flexible bellows, one of which is shown in FIG Fragment 26 is visible, an exposure chamber 28.

The base part 18 includes an inner frame assembly, one of which Part can be seen at 30. This inner frame assembly 30 forms together with the outer portions of the base part 18 a support for the numerous various bodies of the camera. For example, the frame 30 is designed so that it has a chamber for receiving and securing a cassette construction containing films 32 forms in the lower part of the exposure chamber 28. The cartridge 32 has a general flat, rectangular shape, and it contains a stack, not shown, the is composed of photographic film units. These film units are arranged in such a way that they are successively at a steep entrance to the cassette 32 can be arranged by a framing bar, which is only partially indicated 34 is delimited. The cassette 32 also has a on its front end wall Slot 36, which forms an outlet opening through which the individual film units released after exposure. Furthermore, the cassette 32 is on its upper side provided with a slot or an opening 38 into which a part of a total with 40 designated gripper device can be introduced. This gripper device serves to bring about an initial movement of the film unit in each case, which is to be removed from the cassette 32.

In Fig. 1, the parts of the camera 10 assume that position in which the subject is viewed through a reflective device and the lens can be focused 0 As shown in Fig. 1 is in the exposure regulator housing 16 a taking lens 42 installed, which is also the light input part for an optical path for viewing the subject and for focusing of the lens. This beam path runs from the objective 42 to one Mirror 44, which rests against the inside of the rear wall 12, the mirror 44 reflects the incident rays to a viewing surface 46 which is above the exposure plane the camera is arranged. The canopy 46 is on one side a reflective component or carrier 50, which takes a position in Fig0 1, in which it covers the frame 34 of the cassette 32 to the exposure plane of the Protect the camera against incidence of light. The viewing surface 46 has one Shape and optical properties such that it enables the image to be captured Focus scene.

This image can be viewed by the user of the camera through a total with 52 may be viewed collapsible optical viewer. One embodiment of such a viewing surface 46 is shown in U.S. Patent 3 735 685, while assembly 52 with its associated internal components is described in detail in U.S. Patent Application 98,356 filed December 15, 1970 Is the camera 10 in its viewing and focusing position Fig. 1, takes the exposure device designated as a whole with 56 or the connection in the exposure regulator housing 16 a position such that an opening 58 is present, which is formed by two cooperating closure parts 60 and 62 is, which in the exposure regulator housing 16 in a guide, not shown are slidably mounted. Each of the shutter parts 60 and 62 has a teardrop shape Opening 64 or 66. In addition, each closure part has a second opening 68 and 70, respectively, and these openings move in synchronism with the openings 64 and 66 on the front of the detector elements of a light-sensitive network, which is arranged behind an optical assembly 72. According to Fig. 1, the openings are 64 and 66 arranged so that they can be moved with respect to the beam path of the camera 10 determined by the taking lens 42. Depending on the position of the Closure parts 60 and 62 overlap the openings 64 and 66 symmetrically to to delimit an opening that can be changed as required. When viewing and focusing According to Fig. 1, the closure parts 60 and 62 assume such a position that the Opening 58 completely exposed to viewing the subject to facilitate.

The closure parts 60 and 62 are moved symmetrically to one another, since it is articulated to a two-armed lever 74 which is used to actuate it are rotatably mounted in the housing 16 in the middle between its ends is. The lever 74 is at its upper end with the closure part 60 by a Pin 76 articulated, while the lower part of the lever with the locking part 62 is articulated by a pin 78. According to FIG. 5, the rotational movements of the double lever 74 and thus also the movements of the locking parts 60 and 62 through caused an electromagnetic device for generating a tensile force, at which is an electromagnet 80 to which an opening spring 82 is assigned ist0 The solenoid 80 is disclosed in U.S. Patent Application 245,884, filed April 21 Described in 1972; it has an excitation winding 84 on a bobbin 86 is applied, which in turn is attached to a U-shaped frame part 88 is. A plunger core 90 is displaceable in a central opening of the bobbin 86 stored, and the entire assembly is stationary in the exposure controller housing 16 arranged. The opening spring 82 is on the plunger 90 between the frame part 88 and a cap part 92 pushed on. The cap part 92 has a slot 94 on, in which a pin 96 engages with a clearance, which is in a lower part of the double lever 74 is permanently installed.

In the arrangement according to FIG. 5, the coil 84 of the electromagnet 80 excited, the 'plunger 90 is drawn into the solenoid, so that the opening spring 82 is tensioned by pressing together, and that at the same time the double lever 74 is rotated in such a direction that the shutter members 60 and 62 against each other can be moved to close the exposure aperture 58. If the solenoid 84 on the other hand, de-energized, the opening spring 90 moves the double lever 74 in the opposite direction so that the openings 64 and 66 of the Closing parts 60 and 62 form a progressively enlarging opening, the lies in the optical beam path of the camera.

With the electromagnet 80 and the opening spring 82 works according to 5 shows a two-pole switch S4, to which an upright, insulating Base part 98 belongs, which is attached to the frame part 88 and has an elongated, rod-shaped contact 100 carries, the upwardly protruding part is shaped so that it slides against two separate conductive surfaces 102 and 104 can move. The contact 100 is normally biased so that it is his outer position in contact with the conductive surface 104 assumes. Becomes the electromagnet 80 turned on to withdraw the plunger 90, but a pin 106 comes out to the effect that protrudes laterally from the cap part 92 to the contact 100 so that it is in conductive contact with the conductive surface 102 occurs. The conductive areas 102 and 104 are by a relatively small Distance separated so that electrical contact with surface 102 is made is, as soon as the plunger 90 is almost to its retracted inner Stop position has moved 0 When switching off the electromagnet 80 is against it the rod-shaped contact 100 very quickly makes electrical contact with the conductive Area 104. Fig. 5 shows in solid lines the retracted position of the spring 82 and the cap part 92, while the opposite position of these parts at The strimless state of the coil 84 is indicated by dashed lines, the corresponding reference numbers are each provided with a mark. The in Fig. 1 designated as a whole with 56, actuatable by the electromagnet is with further details in the UOS.AO patent application 349 960 from April 11th Described in 1973.

Referring to Fig. 1, the camera 10 is viewed by the user after viewing the scene to be recorded and the focusing of the lens to initiate a photographic Working cycle operated by pressing a start button 108, the to the Exposure regulator housing 16 protrudes This actuation causes the electromagnet 80 is turned on to the closure parts 60 and 62 in their closed position bring and secure the exposure chamber 28 against incidence of light. Dependent on of a signal of the switch S4, which indicates that the ierschlußteile 60 and 62 are in their closed position opposite the beam path of the camera a DC motor mounted on the inner frame 30 in the rear of the camera 110 switched on in order to drive a wheel gear unit designated 112 as a whole, which extends along one side of the base part 18. Once the gears of the transmission 112 rotate, a phase control cam 114 is rotated, which is connected to a Movement acceptance member 116 (Fig. 6) cooperates, which in turn on the Inside a plunger part 118 is attached. The plunger part 118 is through a Crank arm 120 connected to a drive spring arrangement not shown in FIG. 1, which serves to bias the reflective member 50 so that it strives is to pivot about hinges 122 and 124 and assume a position in which it rests against the inner surface of the rear wall 12.

To operate this drive device, the cam 114 is rotated, until the motion take-off member 116 is released, so that the drive spring means the plunger 118 moves forward, whereupon the reflective member 50 upwards is pivoted as soon as the reflective component 50 on the inside of the rear wall 12 is applied, a second mirror 126 is arranged so that it extends longitudinally from the of the optical beam path of the taking lens 42 hit the propagating light so that this light is deflected so that it is to the exposure plane of the camera got. If the camera is used to take pictures in daylight, will the solenoid 80 is then switched off to allow the opening spring 82 to to operate the shutter parts 60 and 62 so that in the optical beam path of the camera a progressively enlarging opening is released 0 A light measuring network, which is arranged behind the input optics 72, reacts to the brightness of the scene to be recorded and fixed opening values to then a Generate command signal which is used to turn on the solenoid 80 again, so that the shutter members 60 and 62 are closed to the exposure process after a predetermined period of time has elapsed, the solenoid 80 remains after the exposure time has elapsed, the motor 110 is switched on again switched on to actuate the gear drive 112. The cam is also activated here 114 rotated so that the plunger member 118 is moved rearwardly about the spring assembly to erect the mirror to tension and the reflective component 50 in the To bring position in which it protects the exposure plane against incidence of light. Simultaneously with this, the gripper device 40 is actuated to pick up the just exposed Film unit out of the cassette 32 through the slot 38 to the outside to move and to guide them between two rollers 128 and 130 that lead to a treatment station 132 belong. The driving force for these rollers is provided by the gear train 112 derived by a connection with the roller 128. A detailed description the device for changing the optical beam path and the direction of the Driving treatment station 132 is found in UOS.A. Patent 3,714 879.

Fig. 6 shows further details of the arrangement for actuating two Switches S3 and 5 in the course of the movement of the plunger part 118. Starts the forward movement of the plunger part 118 in connection with the described release of the reflective Component 50, is a tongue 134, which from the middle part of the plunger part 118 from inwardly protrudes, an insulating cap 136 of an elastic contact 138 of the Switch S5 free. The switch S5 also has an elastic contact 140, at a distance from the elastic contact 138 by an insulating support piece 142, which is attached to the base part 18 of the camera the elastic contacts or contact springs 138 and 140 of the switch S5 essentially synchronously with the beginning movement of the reflective member 50 from its Viewing position in the exposure plane opened out0 This process corresponds to the creation of a first signal or the induction of a first operating state of the switch 5, which is up to the completion of a photographic Working cycle is retained.

The reflective component becomes under the effect of the Eeder prestress 50 with respect to its rest position at an angle of about 37 ° around the axis of the hinges 122 and 124 pivoted. As soon as the reflective component 50 is in its position has largely approximated in contact with the rear wall 12 and the mirror 44, i.e. after after passing through a pivoting angle of about 32 °, the tongue 134 comes as shown in FIG. 6 for resting on the insulating cap 144 of a contact spring 146 of the switch S3. The contact spring 146 is normally on a second contact spring 148 of the Switch S3 on, and both contact springs are also from one on the base part 18 of the camera attached insulating support piece 150 carried. By opening the contacts of the switch S3, by means of which the movement of the reflective Component 50 is monitored, a signal is generated or an operating state is brought about, which indicates that the reflective member 5C is in abutment with its position the rear wall 12 has approached. During the operation of the camera 10 after an exposure process and the movement of the plunger part 118 that is playing backwards is of course there tongue 138 releases cap 144 of switch S3 so that this switch closes can, and here the tongue comes to rest against the cap 136 of the switch S5 to close this switch. By closing the switch S5 results an operating state that serves to switch off the motor 110 and at the same time turn on the electromagnet 80.

With the camera 10 are flash pictures using the 2 produced flash lamp assembly 16G, in which a plurality of flash lamps are arranged along a straight line. In the arrangement 160 are on each Flat side five flash lamps with the associated reflectors arranged so that they are directed outwards. The five flash bulbs on each side are through one printed circuit or the like with a downwardly protruding fastening bar 126 tied together. On each side of the bar 162 are conductive surfaces that Make connections for the various flash lamps, and also the bar Provided with a conductive surface that is not in contact with the flash lamps but serves to close an associated circuit in the camera, so that the camera can be made to run a cycle of making a flash photograph to go through. The required connection with the circuit of the camera 1C will be produced in that the fastening strip 162 of the flash lamp assembly 160 is inserted into a socket 164 which is on top of the exposure regulator housing 16 opens As described in U.S. Patent Application 168,671 dated August 3, 1971, When the camera 10 is an exposure control device with a device for Tracking of the lens used when flash exposures are to be made. With such an arrangement, the aperture size becomes corresponding to the focal length for determines the light that is expected to be of the scene to be recorded goes out. Here, the closure parts 60 and 62 are during their opening movement mechanically stopped in a position that is the focus of adjustment corresponds to 0 In Fig. 7 details of the interceptor provided for this purpose shown. This device includes a wheel 166 for focusing the lens, and this wheel is housed in a front part of the exposure regulator housing 16 The focusing wheel 166 is connected to the frame of the taking lens 42 according to FIG. 1 coupled by a sprocket wheel 168, a part of which can be seen in FIG. 7 is. To relate the focusing position of the wheel 166 to the size of the through Bringing the closure parts 60 and 62 delimited opening is an interception rod is present, which includes a motion take-off linkage 170 that has a motion take-off pin 172, which engages in a cam slot with which the focusing wheel 166 is provided on its inwardly facing surface. The motion take-off link 170 is above the central arranged axis of the focusing wheel 166 pivotally mounted by means of a device 174, so that each rotation of the focusing wheel causes lateral movement of link 170. The upper part of the linkage 170 carries a rotatably mounted locking member 176 which has a surface 178 which protrudes into the movement path of an associated intercepting pin 180, which is in the Double lever 74 is built in 0 The Abfabgglied176, which is normally through a Pin 182, which is under tension, is biased out of said movement path is then pivoted into its interception position when a second electromagnet 184 is turned on, which is in the exposure controller housing 16 above the electromagnet 80 and offset to the rear. The electromagnet 184 has a Excitation coil 186, which has a coaxially arranged cylindrical plunger core 188 surrounds. The free outer end of the 'íauchcore 188 is with the middle part a tie rod 190 coupled, which in turn by a pin 192 loosely with a Extension 194 of a support for the electromagnet 184 is connected. The other end of the tie rod 190 is arranged so that it is with as needed an approach 196 of the intercepting member 176 can be brought into contact. When switching of the solenoid coil 186, the plunger 188 is thus withdrawn so that the Pull rod 190 is caused to pivot the intercept member 176 into a position in which its surface 178 lies in the path of movement of the pin 180. According to Fig, 7, the pin 180 has a flange 198 at its outer end. With this arrangement can the coil 186 of the electromagnet 184 after the completion of the interception process be switched off. Since the opening spring 82, the double lever 74 in the biased State holds in order to support the interception process, it is not necessary to use the Maintain coil 186 in the on state. After the end of a flash exposure the solenoid 80 is switched on to close the shutter parts 60 and 62, whereupon the camera 10 operates in the normal manner for the time after the exposure carries out the intended work steps.

2, 3, 3A and 4 schematically illustrate a circuit for Controlling the devices of the camera 1C and FIG Connection with a table of values from which the respective switch-on states can be seen are. The circuit of FIG. 2 includes a plurality of each fulfilling several tasks Gate A to I. The inputs and outputs of these gates appear in the table of values in FIG. 4 with the designations proposed by Boole. To understand the table in Fig0 4 and to facilitate the description of the circuit is then, if at the inputs and outputs of the mentioned circuit elements the earth potential is present, speaking of a weak signal, and a Such a weak input or output signal can be designated digitally with 0. If, on the other hand, a voltage appears at these inputs and outputs, which the voltage of the power source of the control circuit approaches or reaches it, is spoken of a strong signal, to which the binary designation 1 is attached. From Fig0 2 it can also be seen that certain signals have different gate inputs are fed together. These common signal inputs are shown in FIG a to g. Finally, the outputs of gates A through I are t1 through called t6.

In the following description, it is assumed that the control circuit the camera is used to take a flash picture. Will the camera 10 unfolded and made ready to receive, a locking switch is shown in FIGS. 2 and 3 S6 closed in a main power supply line 212, thus providing a power source 214 in the form of a battery, the circuit via a further main power supply line 216 can feed as soon as another switch S1 is briefly closed. Of the Switch S1 is operated by the Eamerabe user as soon as this one in Fig0 1 depresses start button 108 shown. According to diagram blocks 218 and 220 in Figo 3 is the camera 10 in its initial state, in which the closure parts 60 and 62 expose the largest opening, with the reflective component 50 so is pivoted downwards so that it obscures the exposure level of the camera To enable flashlight operation, the flashlamp arrangement 160 according to FIG. 1 inserted into the socket 164, and as a result of this, a switch S2 is closed as shown in FIG. According to FIG. 3, the camera user is now looking at the subject, and he is focuses the lens, whereupon he closes switch S1. This causes that the main power supply line 216 according to FIG. 2 is a locking network 224 turns on. As described in U, S, A. Patent Application 213 317 dated December 29, 1971, the network 224 can assume one of two different switch-on states. In the first switch-on state, it is possible for the user of the camera 10 to have a running to interrupt the photographic work cycle up to the point in time in which according to FIG. 2, the switch S5 is opened. After opening the switch S5 enables it is the network 224, the circuit, which is in its second switched-on state via lines 216 and 226 to be fed continuously even when the switch S1 has been opened again.

The output of the lock network 224 appears in a Power distribution line 228, which in turn leads to a branch line 230. The branch line 230 is connected to a second branch line 232, and these two lines are used to bring about initial control states Mediation through the various gates and other circuit elements of the Circuit according to Fig0 2o These circuit states as they are at the beginning of a work cycle for adjusting a flash exposure are shown in FIG. 4 as process 1 As seen in connection with diagram block 234 in FIG. 3, the first is further operation in that the excitation winding 84 of the electromagnet 80 is switched on. This winding is shown in Fig. 2 at 84 '. To the winding respectively.

To turn on coil 84, predetermined input signals are the inputs the sweeping function gates A and B are supplied At the entrances a this Gates connected together by a line 236 appear first weak signals, since these inputs are connected to the output of an in Fig. 2 schematically illustrated trigger circuit 242 are connected. The trigger circuit 242 can be of a known type and can, for example, be designed as a Schmitt Urigg circuit be the one normally conductive output stage and one normally not has conductive input stage. These two stages reverse their conductivity state very quickly as soon as a signal is fed to the input stage that is at least equals a predetermined trigger reference signal or threshold value 0 Will the rigger circuit 242 via the branch line 230 and the connected to this Line 244 is supplied with power, the trigger circuit being grounded via a line 246 a weak signal remains at the output, i.e. line 240, until a signal appears in any of the input lines of the trigger circuit, that exceeds the specified irigger or reference level 0 When a such a signal appears at the output on line 240 a strong signal. Will If the camera is used to take pictures in daylight, the trigger circuit is used 242 for exposure control is supplied with such an input signal via a line 246, this signal according to Fig0 2 by an only schematically indicated control network 248 is generated for daylight operation 0 The network 248 is over the line 228 is switched on and it is grounded via a line 250.

A weak signal appears at the input b of the gate A, since this Input via a line 252 and a limiting resistor 254 is grounded. the Line 252 is also through line 256 with a corresponding input b of the gate C and connected via a line 258 to a contact of the switch S4, which corresponds to the switch S4 described with reference to FIG. 5 and according to FIG. 2 has a common connection C, which is the contact spring 100 according to FIG corresponds to, as well as two contacts A and B, with contact B connected to line 258 connected 0 Located switch 54 is in the position in which he connects the contact C with the contact A, it is assumed that it is this is a position which, according to FIG. 5, corresponds to that position in which the contact spring 100 is in contact with the further outward Contact surface 104 is under these circumstances are the locking parts 60 and 62 in a position in which they delimit an opening of a certain size. If the switch 54 is brought into the position in which the contacts C and B with each other are connected, it is assumed that this position according to FIG. 5 of that position corresponds to where the resilient contact 100 rests on the conductive surface 102, wherein the closure parts 60 and 62 assume their closed position.

Since switch S7 is normally in the position at which contacts C and A are connected to each other is line 258 at the beginning interrupted a photographic work cycle. As soon as the switch S4 is in the Position C-B is brought to line 258 via line 260 a voltage fed to the interconnected inputs b of the relevant gate make a strong input signal appear 0 The input c of gate A is connected via lines 262 and 264 to the corresponding input c of gate B. The fact that initially at the interconnected inputs c a weak Signal appears, is due to the fact that the line 264 is on the line 266 is connected to the output line 268 of a trigger circuit 270. Similar as with the trigger circuit 242, the output of the trigger circuit 270 normally appears a weak signal that turns into a strong signal when in the associated Input line 272 appears a signal that is above a predetermined trigger level or threshold value is 0 The trigger circuit 270 is used to connect to each other connected gate inputs c to maintain a weak signal before im In the course of a photographic work cycle, an exposure process is carried out will.

Becomes the logic state described above on the input side produced, appears at the output tl of the gate A or in the line 274 a strong Output signal fed to the base of an NPN transistor Q1.

The emitter of transistor Q1 is grounded via line 276, while its collector is connected to a line 278. The line 278 connects the excitation coil 84 ′ of the electromagnet 80 with the power supply line 216.

The strong signal appearing on line 274 is used to control the Bias the base-emitter junction of transistor Q1 in the forward direction and so to energize the coil 84 'so that the locking parts 60 and 62 are caused, to close the beam path of the camera 10. At the output t2 of the gate B appears At the beginning of a photographic work cycle, a weak signal that was transmitted via a Current limiting resistor 280 and a line 282 of the line 278 is fed. The gate B is used, under certain conditions, the electromagnet 280 resp. to supply a weaker current to the coil 84 ', namely when the associated Plunger core approaches its fully retracted position. To this end directs gate B supplies the current to energize coil 84 'through the current limiting resistor 280 um. When transistor Q1 is forward biased, this bypass effect becomes of resistance 280 is practically insignificant.

As soon as the closure parts 60 and 62 their during the closing movement When you reach the end position, switch S4 is actuated and set to position C-B0 In this process shown in Fig. 4 as process 2, when changing the Switch SÇ the weak signal that is fed to input b via line 252 is converted into a strong signal, which has the effect that at the output tl of the gate A weak signal appears 0 As a result, the transistor biases Ql is eliminated in the forward direction, giving the coil 84 'a weaker current is fed.

If the switch 54 is placed in the O-B position, it also changes the one appearing at the output t3 of the gate C. Signal. Before moving of switch S4 is at the output t3 of gate C, i.e. on line 284, a weak one Signal present. This is due to the fact that weak signals are sent to each other connected inputs a or b of the relevant gates and at input d of the Gate C are present0 The weak signal remains at input d of gate C obtained as this input is through lines 286 and 288 as well as the closed Switch S5 is grounded 0 If switch S4 is set to position O-B, and therefore if a strong signal appears at the input d of the gate C, the signal goes at the output t3 of the gate C into a strong signal to a motor control device 290 to actuate0 The control device 290 is connected to the main power supply line 216 is connected by a line 292 and is connected to ground via a line 294, this Motor control device disclosed in UOS.AO patent application 299 667 dated October 24th 1972 is described, is used to turn on the motor 110 (Fig. 1) to the transmission 112 to rotate phase control cam 114 0 As above As described with reference to FIG. 6, the cam 114 is rotated until the tappet part 118 is released to open the switch S5, which is shown in FIG. 2 in the line 288 is 0 By releasing the push button part 118, the camera 10 is forced to complete an exposure process. It should also be noted that by switch S5 before an exposure interval with the switch closed a certain signal state and after the expiry of the exposure time when the open Switch another specific signal state is established0 According to the illustration of the process 3 in Fig. 4 causes the opening of the switch S5 that the input d of the Gate C a strong signal appears, with the result that this at output t3 gatters a weak signal appears. As a result, the engine controller operates 290 that the motor 110 is switched off and braked. While the ram part 118 is moved in the forward direction, the reflective member 50 is through lsederkraft in its exposure position brought in to it the rear wall 12 of the camera 10 rests.

The change in the signal at the input d of the gate C causes further that the interlock network 224 goes into its second power-up state, since this network is connected to the input line 286 of the gate C via the lines 296 and 298. As mentioned, the camera 10 is connected by inserting the flash lamp assembly 160 in the socket 164 switched to flash mode, as this is a switch 52 is closed to determine the operating mode. The switch S2 is closed, as soon as there is contact between a conductive surface on the fastening strip 162 of the flash lamp assembly and a contact in the housing 16 is made.

Closing switch 52 produces a strong signal from the power distribution line 228 from a resistor 300, a line 296, a resistor 302 and a Line 304 is fed to a control circuit 248 for daylight recordings this supply of a strong signal on line 304 becomes the control circuit 248 blocked. Referring to Figure 2, switch 52 is on line 296 and it is Grounded via a resistor 306. The line 304 also runs to the one another connected inputs e of the gates E and Do When the switch S5 is opened, appears a strong signal on line 228 to which switch S2 is connected, and accordingly also in lines 304 and 308, so that at the inputs e the Gate a strong signal appears. Lines 310 and 312 connect the inputs a of the gates E and D with the line 238, so that in them during the introductory 'Part of a photographic work cycle a weak signal appears. At the entrance f of the gate D, the weak signal is retained because this input has the Lines 314, 316, a diode 318 and a closed switch S3 is grounded. The switch S3 corresponds to that described above with reference to FIGS. 1 and 6 Switch S3. The diode 318 is used to suppress interference signals and the like, when you press the switch 53 could arise.

At the input g of gate E there is initially a weak signal, because this input via line 320 to the output stage of the rigging circuit 322 is connected to which a total of 324 designated RC timer network heard. The trigger circuit 322 can be designed as a Schmitt trigger circuit and have a normally non-conductive input stage connected to a normally conductive output stage cooperates. These stages return theirs respective conductivity state changes quickly as soon as the input stage receives a signal is supplied, which has a certain threshold value.

As shown in Fig. 4 as process 3, the opening of the switch leads S5 to the fact that a strong signal appears at the output t4 of the gate D in the line 326. Line 326 is connected to the base of an SPN transistor Q2, its The emitter is grounded through a line 328, while the collector is grounded through the lines 330 and 332 is connected to the main power supply line 216. Also lies in the line 332 the coil 186 'of the sheet metal chrominance 184. As with reference to FIG described, the surface 178 of the intercepting member 176 is pulled into a catching position, in which they are in the path of movement of the pin 180 built into the double lever 74 lies. At the same time, the signal at the output t5 of the gate E goes weak Signal over so that a current can flow through line 334 but 0 Da on If current limiting resistor 336 is present, this current has only a negligible value low strength.

In FIG. 3, the diagram block 340 illustrates the switching off of the Control device 248 for daylight recordings, diagram block 342 the switching on of the motor 110, the releasing of the reflective component 50 and the opening of the Switch S5 and the diagram block 344 the fact that the camera 10 causes is to perform a photographic work cycle, at the same time the electromagnet 184 is switched on.

In FIG. 3, the diagram block 346 denotes that shown in FIG Operation 4, in which the reflective component 50 is pivoted 32 ° and the switch 53 is opened0 This process of opening the switch S3 is based on above of Fig. 6 described, and it serves, among other things, according to FIG. 2 a total RC timer network designated 350 to be actuated0 The network 350 to which a master resistor 352 and a timer capacitor 354 include, and that over a line 232 is grounded, is used to start the exposure phase of a to delay the photographic work cycle. Here the delay time is like this chosen so that it is sufficient to enable the reflective member 50 to to achieve his lending position. The network 350 is opened when a the bypass capacitor 354 is actuated by a line 356 is formed, which is connected to the junction between the capacitor 354 and the Resistor 352 is connected to input line 272, line 356 2 via a diode 358 and the switch 53 is grounded. The diode 358 serves to protect the line 356 against interference signals and the like. The switch Second, S3 plays a role in energizing coil 186 'of electromagnet 184 with an attenuated current. If the switch S3 is opened, it becomes a strong one The signal is fed to the input f of the gate D via the lines 316 and 314, see above that at the output t4 of this gate instead of a strong signal a weak one Signal appears.

As a result, the transistor Q2 becomes biased in the forward direction eliminated, and the excitation current for the coil 186 of the electromagnet 184 is over a limiting resistor 336 and output line 334 of gate E bypassed.

In the case of the delay network 350, it becomes the one for the trigger circuit 270 reaches the required threshold voltage, the weak signal goes on the output line 268 into a strong signal. As with respect to diagram blocks 360 and 362 in FIG Fig0 3 described and shown in Fig. 4 as process 5, this signal change is used in addition, a flash delay network 324 to operate and the To make excitation coil 84 'of the electromagnet 82 currentless. The exposure phase a photographic work cycle is initiated, and the interconnected Inputs c of gates A and B appear a weak signal. As a result of this switchover the signal at the output t2 of the gate B changes into a strong signal, whereby the excitation coil 84 'is de-energized. The locking parts 60 and 62 are released so that they move in weighting on their open positions0 The fixed delay time introduced by the flash delay network 324 is selected according to the period of time which the shutter parts 60 and 62 need to reach their full open position. However, the locking parts 7 usually intercepted by the catch member 176 in an intermediate position To operate the network 324, the strong output signal is used by the trigger circuit 270 in line 268 is converted to a weak signal by an inverter 364. The weak signal thus generated is transmitted from the inverter 364 via the line 366 The collector of this transistor is fed to the base of a NEN transistor Q3 through a line 368 to the junction between a timer resistor 340 and a timer capacitor 372 connected. The opposite side of the capacitor 372 is connected to a line 374 which is a connection between the emitter of transistor Q3 and a ground line 376 for rigging circuit 322. Trigger circuit 322 is connected to branch line 232 by line 378 Connected for power 0 During the start-up time of the delay network 350 serves the strong signal that the inverter 364 appears on line 366 lets, in addition, the base-emitter junction of transistor Q3 in the forward direction bias, so that the capacitor 372 is bridged 0 As soon as the rigger circuit 270 responds, causes its inverted output appearing on line 366 signal that removes the forward bias of transistor Q3 is opened, so that the shunt described and the network 324 actuated will.

As illustrated with reference to FIG. 5, described in FIG. 4 as process 6 and indicated in Fig. 3 by the diagram block 360, the switch S4 goes into Position C-A over, as soon as the opening movement of the locking parts 60 and 62 begins, This has the consequence that a flash lamp ignition circuit 380 via a line 382 is switched on. The circuit 380, to which an ignition input belongs, which with the line 334 is connected, and which is via a line 384 to cup, is used to select the individual flash lamps of the Elitz lamp arrangement 160 according to FIG. 1 and ignite.

The activation of the ignition circuit 380 is shown in FIG. 3A by the diagram block 386 shown.

If, as described with reference to FIG. 7, the closure parts 60 and 62 reach their tracking position, the pin 180 of the double lever 74 is intercepted, to set the size of the discharge opening. This process is shown in Fig. 3 through diagram block 388 illustrates.

As indicated in Fig. 4 as process 7 and in Eig. 3A through the diagram blocks 390 and 392 indicated, goes at the end of the effected by the delay network 324 Delay the signal at the output of trigger circuit 322 from a weak signal into a strong signal, which is passed through line 320 to the input g of the gate E on which there was previously a weak signal. This has to Consequence that at the output t5 of the gate E instead of the weak signal, by means of it the excitation coil 186 'had been turned on, a strong signal to turn it off of the magnet 184 appears. As explained with reference to FIG. 7, the moves Double lever 74 is not now, since the flange 198 of the pin 180 meets the cam edge 178 of the catch member 176 mechanically, so that the previously determined opening size remains of the exposure device unchanged. Generated during this shutdown process coil 186 'has a flyback pulse appearing on lines 332, 330 and 334.

Line 330 is connected to the input line through resistor 336 334 connected to the flash lamp ignition circuit 380, those on the return pulse responds to ignite a particular flashlamp of the flashlamp assembly 160 According to diagram block 394 in FIG. 3A, the control circuit according to FIG. 2 determines a fixed exposure interval that corresponds to the ignition time of one of the flash limps in the arrangement 160 corresponds. The trigger circuit 322 leaves on line 320 a strong signal appear, a strong signal also appears at the input g of the AND gate F, da this input is connected to line 320 by line 398. The second The input of the gate F is denoted by e in FIG. 2 and through a line 400 connected to line 304, when switch 52 is closed it remains in line 304 received a strong signal. Therefore appears at the output of the gate F in the Line 402 provides a strong output signal through which the flash timer network 396 is actuated0 The network 396 includes a timer capacitor 404, the 0 is in a line 406 between an input of the trigger circuit 242 and ground On the opposite side of the network 396 there is a timer resistor 408, which lies in line 402 and is connected to line 406.

If according to diagram blocks 410 and 412 and according to the position of process 8 in FIG. 4 on network 396 the threshold or trigger signal for trigger circuit 242 is reached, the output goes on line 240 from a weak signal to a strong signal. This strong output causes a correspondingly strong signal at the common gate inputs a appears that has the consequence that the output signals of gates A and B inverted will. For example, the signal at the output t1 of the gate A goes strong Signal over, while the signal at the output t2 of the gate B in a weak signal transitions0 If a strong output signal appears on line 274, the base-emitter transition is activated of transistor Q1 is forward biased to thereby release the electromagnet or to switch on the coil 84 'via the line 278. Now the electromagnet begins 80 to withdraw the plunger 90 to close the closure parts 60 and 62 To bring it into its closed position, ie shown in FIG. 4 as process 9, goes then, when the locking parts 60 and 62 reach their closed position, the switch 54 to position C-B, so that the line 382 of the flash lamp ignition circuit 380 is interrupted 0 This changeover of switch S4 also causes that at the inputs b of the gates A and C instead of a weak signal a strong one Signal appears. As shown in Fig0 4 as process 9 and in Fig0 3A by the Diagram block 414 indicated, this change in the input signals leads to the fact that at the output t3 of the gate C a strong signal appears to the motor control circuit 290 to actuate, by which the motor 110 is then switched on. Hence the Control device causes the camera to carry out its on the exposure to continue the following work cycle, according to diagram blocks 414 and 418 3A treats an exposed film unit and the reflective component 50 is pivoted in the direction of the position in which it is the exposure plane the camera 10 covered. As shown in Figure 4 as act 10, the switch S3 closed at the beginning of the movement of the reflective component, and when this Component reaches the position in which it covers the exposure plane, becomes the Switch S5 closed, as shown in Fig. 4 as process 11 and in Fig0 3A as a block of diagrams 420 is shown0 Thus, the switch S5 is used to de-energize the entire circuit to make, the coil 84 'is also switched off. As in Figo 3A by the Diagram block 422 indicated, this has the consequence that the closure parts 60 and 62 are moved by the opening spring 82 into the position in which they are the largest Release opening It should be noted that the switch 5 is in its closed position according to its original position only at the end of a certain photographic work cycle occupies, From Figo 8 are further details of the Flash lamp ignition circuit 380 is evident for the sake of clarity, the reference numbers in those lines which have already been described with reference to Fig0 2, in 8 each has a mark attached. According to Fig0 8, there are several flash lamps 430a to 430c with the connections 432a to 432c of three lines 434a to 434c, lines 434a to 434c are between power supply lines 436 and 438 connected in parallel. Line 436 is with the battery power supply line 216 of FIG. 2 through the switch S4 and the line 382 'connected, and accordingly the power supply line 438 is grounded via the line 384 '. With each of the Flash lamps 430a to 430c are a primary switching operation by silicon controlled rectifiers 440a to 440c carried out, which are in the associated lines 434a to 434e. The control electrode 442a of the rectifier 440a is connected to the output of a level detector network Jl / lll connected0 The network 444, which by lines 446 and 448 with the Power supply lines 436 and 438 are connected, the via line 334 ' Record the supplied flashing pulse, which has a short duration of z0B. about 10 microseconds and as a return pulse when switching off the electromagnetic coil 186 'is generated.

The control electrodes 442b and 442c of the controlled silicon rectifiers 44Ob and 44Qc are connected to associated sequential control logic networks 450 and 452, The set plant 450 is via line 454 to line 434a on the anode side of the rectifier 440a and also through line 456 to the Line 434b Connected Correspondingly, logical network 452 is connected to the line 434b connected to the anode side of the rectifier 440b via the line 458 and through line 460 to lamp circuit line 434c on the anode side of the rectifier 44Cc. The networks 450 and 452 are used to prove that a flashlamp, e.g., flashlamp 430a, has previously been ignited, and around cause the circuit to switch to the next flash lamp, e.g. flash lamp 430b, to be selected by sending an ignition or control pulse to the associated rectifier, e.g., the rectifier 440b is fed. Networks 450 and 452, a predetermined resistance between the downstream Lines 434a to 434c to work0 Of course you could with the circuit 8 also provide more than three flash lamps if one has more lamp circuit lines with associated sequential control logic networks, as described in the U.SOA.atentschrift 3 676 045, the logical sequence control networks 450 and 452 respond on the resistance between the terminals of an ignited or consumed Flash lamp is available in order to select the next flash lamp in each case 0 Im In general, a resistance value is chosen that represents an ignited flash lamp, and which is, for example, 75 ohms or more in the circuit in question, so that one the presence of such resistance as an indication of its presence of an interrupted flash lamp circle. By such an arrangement It also makes flash lamps misfiring or inoperable Flash lamps are taken into account within the relevant arrangement.

In Fig. 3 is the mode of operation of a preferred embodiment of the invention in a photographic work cycle of the camera 10 schematically shown. As indicated by diagram block 462, closing the Switch S1 for initiating a photographic work cycle that a device is brought into effect to set the state of the flash lamps. This detector assembly checks the connections of an existing flash lamp assembly 160 to ensure that at least one unused flash lamp is still available. If there is no operational flash lamp and it is in its position of use, a blocking network is brought into effect according to diagram block 464 in FIG. 3, which prevents the switching on of the motor 110, as shown in FIG. 3 by the dashed line Line 466 indicated it, or that may respond to switching on the electromagnet 80, as indicated in FIG. 3 by the dashed line 468 is. At the same time, according to diagram block 470 in Xlig. 3 switched on a facility that alerts the camera user of the cause that the Camera 10 has not completed any photographic work cycle.

It should be noted that in the arrangement according to Fig0 3, the lock the implementation of a photographic work game takes place, before the camera is triggered according to diagram block 344, a full work cycle to go through. As mentioned, the camera is actuated in this sense when the The circuit is electrically locked and the plunger part 118 has been released Blocking of the execution of a photographic work cycle at the beginning of switching on of the motor according to the dashed line 466 in Fig. 3 offers a particular advantage with regard to the use of a light-emitting diode as a device for reporting the fact that the flashlamp assembly is exhausted. In Fig. 14 are the parts of the viewfinder assembly of the camera 10 in connection with a viewing station 472 and a signal lamp 474. It can be seen that the lamp 474 very small and at a considerable distance from the entry optics of the viewing station 52 is arranged. If, according to the diagram block 234 in FIG. 3, the electromagnet 80 is switched on, darkens for the eye of the user at the station 472 the field of view, since the locking parts 60 and 62 brought into their closed position will. At the same time, the very small lamp 474 is turned on to indicate to the user to report that the flashlamp assembly 160 is inoperable0 Although the Lamp 474 is laterally offset, causes the field of view to be darkened at station 52 that the light from the small lamp 474 is easy to notice.

2 is a network shown as diagram block 476 present, which serves to prove that the flashlight assembly 160 is not contains an operational flash lamp aimed at the subject, and there is also a network 478 which is used to manage the operation of the engine controller 290 to block. The network 476 is dependent on the closure of the switch 52 controlled via line 480. Also, the network 476 is with the flashlamp ignition circuit 380 connected by lines 482 and 484, with the addition of a marking also shown in Fig. 8 and connected so that the detector on the resistor responds, which is effective at the terminal 432c of the last flash lamp 430c than on too the sum of the resistance values resulting from this, that the logical sequence control networks 450 and 452 are connected in series. To the Network 476 receives the required energy via an input via lines 481, 485 and 487, and also this network is on via a line 486 Ground, since line 485 is connected to line 382, which in turn can be connected to the power supply line 216 by the switch 54, there is a line 488 in which a resistor 490 is connected and contacts C and A of switch 54 are bridged and positioned between the lines 382 and 260 extends. The resistance value of the resistor 490 is chosen so that it is sufficient to ignite the flashlamp circuit 380 with a weaker current to operate and at the same time the logical operation of the detector network 476 enable. The blocking network 478 is connected to give it a unique Signal of the network 476 can be fed via a line 492, and also there is a line 494 which enables the operation of the engine control device 290 to block. As mentioned, the signal that is at the output t3 of the gate C and appears on line 284 at the time the motor control circuit 290 turns on the rotor 110, a strong signal. Therefore, the network is 478 this strong signal on line 494 and line 496 to ground to the interrupt photographic work cycle. Also, as shown in Fig. 2 is the network 478 is connected by a line 498 to the line 288 above the switch S5. As shown in Fig. 3A as diagram block 500, this connection is required because the detector network 476 would be the network 478 shortly after the ignition of a press the last flash lamp on the side of the flash lamp assembly that is currently in use, to prevent the intended photographic work cycle from being carried out. Since the switch S5 is at the beginning of a photographic work cycle as well as during and after the conversion of the optical beam path has been initiated, one at a time is in a certain position, it is used under these circumstances to the blocking network 478 to make ineffective 0 The network 478 may have an auxiliary power supply line 232 must be switched on.

The detector demarcated in FIG. 2 by the dashed line 502 and locking device is shown in more detail in Fig0 9 according to Fig. 9 is the detector device of the illustrated circuit to the last flash lamp, which are ignited on a currently used side of a flash lamp assembly is, as described above, connected via lines 482 'and 484'.

The line 484 'leads via a block diode 504 to the base of a PNP detector transistor Q40 The emitter of transistor Q4 is through line 506 with two diodes 508 and 510 and connected via the latter to line 482 ', which is also connected to the power supply line 485 'is connected while the collector of transistor Q4 is connected via a line 512, in which a resistor 514 is switched on, to the base of an SPN transistor Q5 is connected. There is a protective resistor between lines 482 'and 484' 516 present0 The base of transistor Q4 is also present via line 518 and a resistor 520 connected to the collector of an NPN transistor Q6, the emitter of transistor Q6 is grounded via line 522, while the base of that transistor is connected to the line 487 'via a line 524 and a resistor 526. With this latter arrangement it is possible to use the base-emitter junction of the transistor Bias Q6 in the forward direction and make it conductive by turning the Switch S1 according to Fig0 2 closes. Under these circumstances, i.e. when the transistor Q6 is on, transistor Q4 can control the resistance and hence the voltage drop interrogate between lines 482 'and 484'. As long as a If there is a ready-to-use flashlight, transistor Q4 remains off. However, once all of the lamps in the array 160 have been used up, approaches the resistance between lines 482 'and 484' becomes infinitely large Value so that the voltage drop is reached or exceeded, which is caused by the diodes 508, 510 and the base emitter Transition of the transistor Q4 is evoked. As a result, transistor Q4 becomes conductive. The sensitivity of this forward bias of transistor Q4 can also be increased regulate by selecting the resistance value of resistor 520 accordingly.

To ensure that the circuit described is such Interrogation process only performs while in the socket 164 a flash lamp assembly 160 is inserted and while the camera is set to flash mode is, there is another transistor Q7, which is used as required to switch on to dissipate forward bias appearing in transistor Q6. The emitter of the transistor Q7 is grounded through lines 528 and 530 while its collector is through line 532 is connected to line 524 and therefore also to the base of transistor Q6 is. The base of transistor Q7 is through line 534 and through resistors 536 and 538 are connected to the voltage supply line 481 ', thus the transistor is Q7 normally biased to be conductive and the forward bias current from the base of transistor Q6. The forward bias present on transistor Q7 however, is eliminated by connecting line 480 'to line 534 wird0 The line 480 'connects the line r bslm closing of the switch 52 after Fig. 2 with class.

The collector of the uranium transistor Q5 is connected to line 540, by means of which a light emitting diode 542 with the resistors 544, 546 and the line 548 is connected in series. The emitter of transistor Q5 is across the line 550 connected to line 530. Thus, when transistor Q4 becomes conductive, becomes transistor Q5 is turned on to allow current to flow from line 548 to the Light-emitting diode 542 can flow, which of those described above with reference to FIG. 14 Lighting device 474 corresponds to 0 There is also a PNP transistor Q8, its base through line 552 with line 540 at the node between connected to resistors 544 and 546.

The emitter of transistor Q8 is connected to line 548, while its collector via line 554, resistor 556 and line 558 is connected to the base of an NPN transistor Q9. The emitter of the transistor Q9 is connected to line 530 while its collector is connected to line 494 ' is in connection with the output line 284 from the gate C of FIG stands. When transistor Q5 is on, transistor Q4 is present a depleted flashlamp assembly, transistor Q8 becomes conductive made to forward bias transistor Q90 as a result a current appearing in the line 494 'can be diverted to reduce the current in the Line 284 of FIG. 2 to eliminate the appearing strong signal and thus the switching on of the motor 110 to prevent. Is a used one in the socket 164 of the camera If the flash lamp arrangement 160 is used, the light-emitting diode 542 is switched on, in order to generate an optical warning signal, and in order to enable the camera 10 only to to bring the locking parts 60 and 62 into their closed position according to the next Description given above with respect to diagram block 500 in FIG. 3A is required that transistor Q9 not be in the forward direction in dependence thereon is biased when the last flashlamp of a flashlamp array is ignited will. For this purpose, as shown in FIG. 9, an NPN transistor Q10 is connected so that it keeps the forward bias current off line 558 as needed. The collector of transistor Q10 is connected to line 558 via line 560, while its emitter is connected to line 530 via line 562, the base of transistor Q10 is across resistor 564, line 566 and resistor 568 connected to the line 481 ', which in turn is connected to the voltage supply line 272 'is connected. The other end of line 566 connects to line 498 ' connected, which in turn is connected to the switch S5 of FIG. Consequently is at the beginning of a photographic work game in which at least one more Flash lamp of arrangement 160 can be used, transistor Q4 is turned off be for the controller of the camera 10 a cycle to the point can run through at which the last flash lamp is ignited. At this point one During the photographic cycle, switch S5 is open and transistor Q10 is forward biased to accept the drive current from line 558 keep away so that transistor Q9 is not forward biased will. Therefore, it is possible for the camera to take the part following the exposure photographic work cycle to go through 0 As soon as all flash lamps one Arrangement have been consumed, transistor Q9 will be in the forward direction biased as the switch S5 during a first part of a photographic Working cycle is closed. Once this happens, the forward bias current, appearing on line 566, kept away from transistor Q100 Figure 10 shows a further embodiment of a detector and blocking device according to the invention. In this case, the resistor 490, which is shown in Fig0 2 between the lines 260 and 382 is not required, since in the present case of the latching characteristic a silicon controlled rectifier use is made to provide for the logical transmission required energy level to maintain0 Otherwise, the circuit 10 essentially constructed in the same way as that described with reference to FIG.

Referring to Fig. 10, a PNP transistor Q11 serving as a detector is like this connected so that its base is connected to the line 570, which is via a block diode 572 is connected to line 484 '. The emitter of transistor Qil is across line 574 and two diodes 576 and 578 connected to line 482 '. As mentioned, lines 482 'and 484' are connected to the terminals leading to the last flash lamp lead and belong to the light bulb ignition circuit 380. Line 482 'becomes power Via resistor 580 and line 382 'from switch S4 via the contacts C and A supplied.

The emitter of transistor Q11 is on line 582 and the Resistor 584 to the control electrode of a silicon controlled rectifier 586 connected. Line 570 connected to the base of transistor Q11 is also via a line 588 and the resistor 590 to the collector of an NPN transistor Q12 connected. The emitter of transistor Q12 is grounded via line 592, while its base via line 594 and resistor 596 to line 487 ' is connected0 As mentioned, the line 484 'when the start switch is closed S1 switched on according to FIG.

Line 594 connected to the base of transistor Q12 is also connected via line 598 to the collector of an NPN transistor Q13. Of the The emitter of the transistor Q13 is grounded, while its base is connected to the line 600 and resistors 602 and 604 connected to line 481 ', the latter in FIG Connection to a branch line of the circuit of FIG. 2 for supplying power stands0 Line 600 connected to the base of transistor Q13 is also up Connected via line 606 to line 480 ', which in turn is shown in FIG. 2 is connected to the top of the switch S2 0 in this circuit form the transistors Q12 and Q13 are practically a logical AND circuit that connects to the Switches S1 and S2 cooperate so that when the switch S1 closes the Transistor Q12 is forward biased, so is the transistor Q11 can be biased in the forward direction as required if an unusable The contacts of switch S2 should be present, however not closed, transistor Q13 is biased in the forward direction, to keep the forward bias off transistor Q12.

Assume that a flash lamp assembly inserted into the socket of the camera is used up so that transistor Q11 is forward biased a current appears on line 582 that the controlled silicon rectifier 586 is made conductive. The anode side of rectifier 586 is across the Line 610, a light emitting diode 612 and resistors 614 and 616 with the line 487 ' tied together. The line 487 'runs so that when you close the switch S1 is switched on. The cathode side of the rectifier 586 is on the line 618 is grounded, in the arrangement of FIG. 10, the transistor Q11 is in the forward direction biased, the rectifier 586 is used to switch on the light-emitting diode 612, to indicate to the camera user that the flash lamp in question has been used up Because of its link-link characteristic, the conductivity of the rectifier remains 586 is also obtained when switch S4 changes to position C-B0 As soon as this happens but an NPN 'transistor Q14 is forward biased, since line 620 is turned on from line 258 ' is connected through resistor 622 to the base of transistor Q14, whose Collector is connected to the control line 582 via line 622, while the emitter is grounded via line 624. With this arrangement, the Line 582 is derived from the control signal appearing to ground, in order to render interference signals ineffective to make that could occur in the operation of the rotor 110 when the switch S4 is in the position mentioned, as is the case with the embodiment according to FIG to the blocking device according to FIG. 1G a Pt-fpransistor Q15, the base of which via the Line 626 to line 610 at the junction between resistors 614 and 614 616 is connected, while its emitter is connected through line 628 to the line 487 'is connected to the lin switching when closing the switch S1 according to Fig. 2 to enable 6 The collector of transistor Q15 is via line 630 and Resistors 632 and 634 are connected to the base of a NEN transistor Q16 whose Collector via line 494 'to output t3 of motor actuation gate C. while its emitter is grounded via line 636. As before Forward biasing transistor Q15 causes the transistor Q16 is made conductive in order to render the motor control device 290 according to FIG. 2 ineffective close.

Similar to the embodiment of FIG. 9 is in that 10, an NPN transistor Q17 is present, the collector of which through the line 638 is connected to line 630, while its emitter is connected to line 640 is grounded. Transistor Q17 is normally biased to be conductive is because the line 642 connected to its base via the resistor 644 and the line 481 'is connected to the auxiliary power supply line 232 according to FIG. Line 642 is also connected to line 498 ', which in turn has the switch S5 can be grounded. Thus, the transistor Q16 becomes inoperative held when switch S5 is open. As before, it allows the circuit 10 of the camera, a photographic work cycle using the last one usable flashlamp of a flashlamp assembly.

11 shows a further embodiment of a detector arrangement according to the invention. In this circuit, the appears through the flash lamp assembly certain resistance was also between terminals 482 'and 484'. The administration 482 'is through line 650 to line 652 at the node between the Resistors 654 and 656 connected. The top of the line 652 is about the Resistor 654 connected to a voltage source, e.g. line 481. The the other end of the line 652 runs through the resistor 658 and the line 660 to switches S1 and 52 in the manner described with reference to FIGS form a logical AND circuit, which is connected to the transistors Q6, Q7 or Q12, Q13 cooperates0 The circuit block 662 is as shown in Fig0 11 over the line 664 grounded.

The other lead 484 'attached to the flashlamp assembly is connected to line 666, which is via resistor 668 and line 660 to the circuit block 662 forming a logic AND circuit. aside from that is the line 666 via the line 670 to an input of a differential amplifier trained operational amplifier 672 connected0 The second input of the amplifier 672 is connected to line 674 which is connected to the Line 652 connected to the junction between resistors 656 and 658. The resistance value of resistor 656 is chosen so that it corresponds to the predetermined resistance, which has a completely used flash lamp assembly, and the z, B. 75 Ohm is, the resistors 668 and 658 have the same resistance values, like this that they form a voltage divider working as a comparison network} of this Output signals appearing on lines 670 and 674 through amplifier 672 be reinforced. According to FIG. 11, the amplifier 672 is connected by a line 676 connected to a terminal at which a voltage + V appears, as well as through the line 678 with a terminal with a voltage -V0 The output signal of the amplifier 672 is fed to a blocking and warning network 682 through line 680. According to 9 and 10, the transistors Q5 and Q8 belong to the corresponding network to Q10 and silicon controlled rectifier 586 and transistors Q15 to Q170 If an operational flash lamp arrangement is available, it can be assumed that that a weak signal appears at the output of amplifier 672, and as soon as the Resistance between lines 650 and 670 becomes large, the output signal is reversed of the amplifier 672, so that z0B. a strong signal appears. Such a strong one Signal would be used in the circuit of FIG. 9 to turn transistor Q5 into the Forward bias or in the circuit according to Fig0 10 the rectifier 586 anzusteuern0 In Fig. 3 is a further embodiment of a device for Generating an alert signal in the presence of a used flash lamp assembly As indicated by the diagram block 690, you can use the exposure controller assign a network to camera 10 to determine when the flash lamps have stopped, which is switched on as soon as the camera is opened and in its use position is brought to Fig0 1. After opening the camera and inserting a Flashlamp arrangement according to diagram block 222 effects the establishment 690 for determining the status of the flash lamps, that at the same time as viewing the subject and focusing the Lens a Warning signal is generated to indicate that the flash lamp assembly is depleted is; this is indicated in FIG. 3 by the diagram block 692. The corresponding The alarm signal was generated in the manner described with reference to FIG. 14 by means of a lamp 474 generates0 This warning signal is available because switch S4 according to Fig 2 maintains its position O-A as long as the camera is not used, as well as during looking at the subject and when focusing the lens, therefore stands Energy is available to actuate the flashlamp ignition circuit 380 as soon as the interlock switch S6 in the line 212 is closed Fig0 13 shows more Details of the lock switch S6, which is in a rear corner of the hamera 10 is housed. From Fig, 13 it can be seen that the rear wall 12 with the inner frame 30 is connected by an overall designated 20 cranked joint. The joint 20 has an axis 694 which connects the rear wall 12 to the inner frame 30 connects, and there is also a forked eccentric extension 696, which has a slot 698. The forked extension 696 forms within of the slot 698, an inner slot or key guide 700, and in the slot 698, a switch operating member 702 is slidably guided by means of a pin. vas actuator 702 is guided so that when pivoting the rear wall 12 a Moves in a vertical direction. The actuator is made up of the largest Part made of an insulating plastic, but with the exception of its lower part, In which a pin made of conductive material is installed, its exposed conductive Areas 704 can be seen in FIG. 13 against the two flat sides of the actuating element 702 elastic contacts 706 and 708 are biased, when arranged according to 13 the rear wall 12 is pivoted further upwards in relation to its position shown, the conductive surfaces 704 come to rest against the elastic contacts at the same time 706 and 708, so that the switch S6 is closed as soon as the camera is in its use position achieved. According to Figo 2, the closing of the switch S6 causes current in the Lines 216 and 260 at switch S4 and line 382 to is available so that the flashlamp ignition circuit 380 can be actuated.

Fig0 12 shows an embodiment in which when inserting a Flash lamp assembly in the camera 10 the base of an ENP transistor Q18 via the Line 712 and the block diode 714 is connected to the line 484, while the associated emitter via line 716 and two diodes 718 and 720 with the other Line 482 'of the flashlamp ignition circuit is connected. The line 712 is also via the line 722 and the resistor 724. with the one leading to the switch S2 Line 480 'connected, the collector of transistor Q18 is connected via line 726, the resistor 728 and the light emitting diode 730 grounded. If in the circuit according to Fig. 12 has a spent flashlamp assembly, the firansistor Q18 in the forward direction biased so that it becomes conductive and the light emitting diode 730 A current can be supplied via line 726. As in the embodiments 9 and 10 determine the resistance of resistor 724 and the choice the voltage drop at diodes 718 and 720 and at the base-emitter junction of the Transistor Q18 the resistance sensitivity of the detector circuit0 claims:

Claims (1)

RLNSPRTCHE: Flashlight pickup device for use in conjunction with a photographic camera of a type that is capable of automatically producing a Sequence of work steps that form a photographic work cycle, from the first to be carried out up to the last work step means (164) for receiving a flash lamp assembly (160) in one position, in which the flash lamp arrangement makes it possible to illuminate a scene to be recorded, wherein the receptacle includes terminals (482, 484) that are electrically can be connected to each individual flash lamp and to which a predetermined electrical state adjusts when a condition is met that of the fact corresponds to the fact that all flash lamps contained in the arrangement have been ignited a flashlamp igniter (380) connected to the terminals and is used in a predetermined order from the first to the last Flash lamp to choose one flash lamp and the selected flash lamp synchronously to ignite a detector device with a predetermined working step of the camera (476), which responds to the electrical state of the connections, to its state to generate a representative signal, as well as by a locking device (478), which responds to the presence of the unique signal in order to carry out certain operations after the completion of a number of photographic To prevent work cycles during which all flash lamps of the arrangement, which were in the stated position to illuminate the scene to be recorded Have been consumed 2. Device according to claim 1, characterized in that g e k e n n -z e i c h n e t that the detector device (476) a first facility has, which is based on the connection of the flash lamp assembly (160) to the receiving device (164) responds to set the detector means in operation so that said unique signal is generated. 3. Apparatus according to claim 1, characterized in that g e k e n n -z e i c h n e t that the detector means (476) responsive to voltage changes means which includes a transistor stage connected to the terminals (482) is, and that the transistor stage is in a conductivity state that corresponds to the clear signal if there is a resistance at the connections is equal to or exceeds a predetermined value, 4. Device according to claim 1, characterized in that the locking device (478) has a display device (542) which, as a function of the appearance of the unique signal can be switched on in order to generate an optical warning signal 5. Apparatus according to claim 1, characterized in that the locking device (478) depending on the unambiguous signal comes into effect to carry out all work steps of the camera with the exception of the first work step Preventing device according to claim 5, characterized in that it is not indicated that the locking device (478) has a display device (542) which is shown in Depending on the unambiguous signal can be switched on to an optical warning signal zugener0 7. The device according to claim 1, characterized in that g e k e n n -z e i c h n e t that the locking device (476) has a device that the operating state feels that by an exposure causing step within the photographic Working cycle is given to the locking device during a working cycle, during which the last flashlamp is ignited to prevent the implementation of Work cycle impossible to make0 8. The device according to claim 1, characterized g e k e n n -z e i c h n e t that the detector device has a comparison network, which is connected to the terminals (482, 484) and constructed so that the said predetermined electrical state forms a quantity that is determined by the comparison network is subjected to a comparison that the comparison network in the presence of the said electrical state of the connections a predetermined output signal supplies, and that a differential amplifier (672) is present, which on the predetermined Output signal responds to generate the unique signal 0 90 single lens reflex camera of the type with a drive device which can be actuated to drive an optical To switch the beam path between a viewing position and an exposure position, a reflex device that enables the user to to look at the scene to be recorded and to determine the image section, one Closure device, which can be actuated as required, around the optical Dtrahlenweg to close or to open, a control device that acts on the generation of a Start signal responds to the shutter device and the drive device to operate in such a way that a predetermined set of work steps takes place, which form a photographic work cycle, the control device being suitable is to operate the shutter to close the optical path, before the drive device is actuated, with a first converter device, which is in a first state at the beginning of a photographic work cycle and which then changes to a second state when the optical beam path is switched to the exposure process, the camera also having a device which makes it possible to accommodate a flash lamp assembly in a position in which it makes it possible to illuminate a scene to be recorded, with connections, which is electrically connectable to each flash lamp and is in a predetermined electrical State if there is an operating state indicating that all of the flashlamps in the flashlamp assembly have been ignited as well as a flashlight ignition circuit connected to the terminals and is used to progress from the flashlights from the first to the last to choose one flash lamp and the selected flash lamp synchronized with one to ignite a certain work step, indicated by a detector device (476), which is responsive to the electrical state of the connections (482, 484), to to generate a unique signal representing this state, as well as by a blocking device (478) responsive to the presence of the unique signal, to prevent certain operations from being carried out after a number of photographic work games has been carried out in which all Flash bulbs that are in the area required to illuminate a scene have been used up Position. 10. Camera according to claim 9, characterized in that g e k e n n -z e i c h n e t, that the detector device (476) has a switch-on device which responds, when the camera is actuated to ignite a flash lamp, it causes the detector device is made possible to generate the unique signal, and that the detector means responds in this manner in response to a photographic work cycle is initiated. 11. A camera according to claim 9, characterized in that g e k e n n -z e i c h n e t, that the detector device (476) is a device responsive to voltage changes to which a transistor stage belongs, which is connected to the connections (482, 484) is connected, and that this transistor stage is in the conductive state, which corresponds to the unique signal if there is a resistance at the connections that equals or exceeds a predetermined value0 12. Camera according to claim 9, characterized in that the locking device (478) a display device (474), which depends on from the appearance of the clear signal can be switched on to an optical warning signal to create. 130 Camera according to claim 9, characterized in that that the blocking device (478) depending on the appearance of the unique signal comes into action to actuate the drive device after initiation the actuation of the locking device (60, 62) to prevent0 14. Camera after Claim 13, characterized in that the locking device is a Has display device that depends on the appearance of the unique Signals can be switched on in order to generate an optical warning signal0 15. Camera after Claim 9, characterized in that the locking device is a Has sensing device that responds to the second operating state of the transducer, in order to prevent the locking device from making a work cycle impossible to make so that a photographic work cycle can be completed when a final flashlamp is ignited, located within the flashlamp assembly is in its position of use. 16. A camera according to claim 15, characterized in that it is n -z e i c h n e t that the detector device has a switch-on device which responds, when the camera is actuated to ignite a flash lamp it causes the detector device is made possible to generate the unique signal and that the detector device depending on the initiation of the relevant work cycle in this way Effect comes. 17o camera according to claim 16, characterized in that it is indicated that the locking device depending on the appearance of the unique signal comes into effect to prevent the actuation of the drive device, after this the movement of the closing device (60, 62) has been initiated. 18. A camera according to claim 17, characterized in that it does not exist that the locking device has a display device that is dependent from the appearance of the clear signal can be switched on to an optical warning signal to create. 19. A camera according to claim 9 characterized in that the blocking device has a display device (474) which, as a function from the appearance of the clear signal can be switched on to an optical warning signal to generate, and that this display device on the camera (10) at a distance arranged by the reflex finder device (52), but after being held for is perceptible to the user. 200 Camera according to Claim 19, characterized in that it is not indicated that the locking device depending on the appearance of the unique signal comes into effect to prevent all work steps from being carried out, on the actuation of the Qerschlußeinrichtung to Verschlie-Ben the optical Follow the beam path, depending on the initiation of the movement of the shutter device (60, 62). 21. Photographic camera of the type that emerges from a folded Can bring the state by opening into an operating position with a device for mounting a flashlamp assembly in such a position that the flashlamps make it possible to illuminate a scene to be recorded, connections that are electrical are connectable to each flash lamp and are in a predetermined electrical State if there is an operating state, which of the fact corresponds to the fact that all of the flash lamps of the flash lamp arrangement occupying their position of use have been ignited, a device for connecting an electrical power source, devices that can be operated to automatically carry out a sequence of work steps, the form a photographic work cycle, from the first to the to run the last work step, a control device that with the help the power source can be switched on and responds to the initiation of a work cycle, to operate the facilities mentioned as required and one selected in each case To ignite the flash lamp synchronously with a predetermined work step, as well as with an interlock switch which can be operated to electrically switch the control device to be connected to the power source as soon as the camera is opened and in its position of use is brought, g e k e n n n z e i c h n e t by a detector device (476), which responds to the electrical condition of the connections when the camera (10) is opened to generate an unambiguous signal indicating this state, and by a display device (474) which, depending on the appearance of the clear signal can be switched on in order to generate a visual warning signal by this indicates that all within the flash lamp assembly are in their position of use consuming flash lamps are consumed are0 22. Camera according to claim 21, g e k e n n n z e i c h n e t by a blocking circuit (478), which reacts to the occurrence the clear signal responds to the implementation of certain work steps a photographic work cycle to prevent 23. Camera according to claim 22, in that the blocking circuit is activated on the occurrence the clear signal responds to the implementation of stupid work steps to prevent a photographic work cycle 0 24. Camera according to claim 1, in that the detector device (476) and the Display means (474) are arranged so that they are directly connected to the power source (214) are fed when the lock switch (S6) is operated to the To electrically connect the control device to the power source, 25th Camera according to Claim 21, characterized in that it relates to the detector device a first device involved in attaching a flashlamp assembly responds to the receiving device to enable the detector device to to generate the unique signal. 26. The camera according to claim 21, characterized in that it is not that the detector device is a device responsive to voltage changes to which a transistor stage connected to the terminals (482, 484) belongs, which is in the conductive state, through which the unique signal is represented when a resistance appears at the connections that is equal to is a predetermined value or greater than this. 27. Flash receiving device for use in conjunction with a photographic camera of the type that can be operated to automatically a sequence of work steps forming a photographic work cycle from to let the first to the last work step run through n e t by means (164) for receiving a flash lamp arrangement (160), in such a position that it is possible to ignite one flash lamp at a time, to illuminate an increasing scene, connections (482, 484) being present are electrically connectable to each flash lamp and located in a predetermined electrical state if there is an operating state that indicates the fact represents that all of the flashlamps in the flashlamp assembly have been ignited a flashlamp lighting circuit (380) connected to the terminals and serves to progress from the flash lamps from the first to the last flash lamp to choose one flash lamp and the selected flash lamp synchronously with one to ignite a predetermined working step of the camera, a detector device (476), which responds to the electrical status of the connections to this state to generate representative unique signal, as well as by. a display device (474), which responds to the appearance of the unique signal, to an optical Generate warning signal.