DE1245714B - Camera with an exposure control device - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

Int. Cl .:

G03b

GERMAN

PATENT OFFICE German KL: 57 a - 32/05

EDITORIAL

Number:
File number:
Registration date:
Day of delivery:

1,245,714
A 33636IX a / 57 a
December 30, 1959
July 27, 1967

Government property

The invention relates to a camera with an automatic exposure control device whose exposure time and aperture adjusters can be regulated according to several different control programs. In such cameras it has already been proposed to provide several operating handles, Each handle is assigned its own control program, all the more different with the same brightness To be able to adjust exposure time-aperture pairings automatically.

It is the aim of the invention to provide a camera of this type in which the user is currently The triggering of a recording does not have to worry about which one is available Seeing control programs is to be selected, but this selection can be made before recording.

According to the invention, this is achieved in that a common measuring button for all programs, their Move initiates exposure metering and adjusts the actuators, and a switch for Preselection of the desired control program are provided.

When the invention is used, attention is therefore drawn during the initiation of a recording of the camera user is not distracted by the choice of subject.

In addition, the risk is eliminated that, for example, when shooting a fast moving Motif, a handle is operated, which the setting of the time and the aperture after a wrong sight Control program causes, for example, sets a time-aperture pairing that only provides a great depth of field.

According to a further embodiment of the invention it is provided that the switch is in a further Setting position can be transferred, in which the adjuster for manual setting of shutter speed and aperture is released are.

This ensures that with the same setting element with which the different control programs can be preselected, a switch to manual setting can also be made.

Advantageously, the changeover switch can also cover means, such as cover plates for the Manual setting means, for example knurls or finger rests, control the exposure value adjuster. By using this measure it can be achieved that an unintentional adjustment of the exposure time or the aperture in a setting position of the camera for automatic exposure control effective is avoided.

Camera with an exposure control device

Applicant:

Agfa Aktiengesellschaft,

Leverkusen, Kaiser-Wilhelm-Allee 24

Named as inventor:

Dr.-Ing. Gerd Kiper,

Dipl.-Ing. Franz Jakob, Unterhaching;

Ulrich Auer, Geneva (Switzerland);

Roland Knorr, Darching;

Fridolin Hennig, Munich

The changeover switch can preferably also control a locking device for the measuring button, so that an unintentional actuation of the measuring button in the setting position for manual operation is prevented is.

Several exemplary embodiments of the invention are shown in the drawing. It shows

1 shows an exposure control device according to the invention in a perspective view,

F i g. 2 one with the device according to FIG. 1 provided camera in a perspective view,

F i g. 3 shows a second exemplary embodiment in one of FIGS. 1 corresponding reproduction,

F i g. 4 shows a third exemplary embodiment also in one of FIGS. 1 corresponding reproduction,

F i g. 5 is a partial view of the lens barrel of a fourth embodiment;

F i g. 6 shows a section through the tube according to FIG. 5,

F i g. 7 shows a perspective illustration of the exemplary embodiment according to FIG. 5 and 6 as well as

F i g. 8 is an exploded perspective view of a further exemplary embodiment.

In the embodiment according to FIG. 1 and 2, an auxiliary adjusting ring 1 is rotatably mounted concentrically to the optical axis ZZ. The ring 1 has an angled extension 2 with a pin 3. The pin 3 rests on the arm 5 of a measuring button 6 under the action of a drive spring 4, one end of which is connected to the extension 2 and the other end of which is connected to the camera. The measuring button 6 has, as in particular FIG. 2 shows one in front of the camera

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wall 7 arranged finger rest 8 and is under the action of a return spring 9, which is larger than the drive spring 4.

The auxiliary adjusting ring 1 also carries a pin 10, over which a fork 11 of a scanning slide 12 engages. The scanning slide 12 is by means of an elongated hole 13 on two pins 14 which are placed on an intermediate wall 15 of the camera. At the One end of the scanning slide 12 has two lugs 16, 17. At the right angles from the plane of movement of the slider 12 bent out approach 16 is a tab 18 of a movable jaw 19 under the action of a compression spring 20. The compression spring 20 is supported on the one hand on the tab 18 and on the other hand on a tab 21 of a fixed jaw 22. The jaws 19 and 22 in the rest position between their clamping surfaces 23, 24 form a slot in which a pointer 25 of a moving coil instrument 26 can play freely. The moving coil instrument 26 is connected via connecting lines 27 with a photocell 28 in connection.

Furthermore, the moving-coil instrument 26, which is mounted so as to be rotatable with respect to the fixed clamping jaw 22, is rigidly coupled with a dial 29. On the setting wheel 29 is a scale 30 with film speed values applied with a mark applied to the wall 32 of the upper part of the camera 31 can work together. Underneath the moving coil instrument 26, the clamping jaw 22 can be rotated a tracking pointer 33 is stored. The tracking pointer 33 carries a pin 34 which, under the action of a Tension spring 35 is guided against the projection 17 of the scanning slide 12. The tracking pointer 33 is included arranged so that the pointer-shaped end 33 α in the deflection area of the lower end of the pointer 25 of the moving coil instrument protrudes.

The auxiliary adjusting ring 1 is connected to an adjusting ring 37 via a pin 36 arranged parallel to the optical axis ZZ. The adjusting ring 37, like the other rings used to set the exposure time and aperture, is around a ring shown in FIG. 1 only partially recognizable fixed inner tube 38 rotatable. The pin 36 engages in a slot 37 a of the adjusting ring 37. A lever 39, which carries a rod-shaped driver 40, is rotatably articulated on the adjusting ring 37. The driver 40 extends parallel to the optical axis ZZ and first penetrates a radial slot 41 of a support plate 42 connected non-rotatably to the inner tube 38 Guide control cam 45 which is inclined relative to the guide slots 43, 44 and which are cut into the support plate 42.

The driver 40 also passes through a recess 46 of a switch 47 rotatably mounted on the inner tube 38 Distance of the other end 48 b from the axis ZZ is dimensioned. The driver 40 is guided against the control cam 48 under the action of a spring 49, the free end of which is connected to the adjusting ring 37. A scale 50 with setting symbols for the different control programs is applied to the outer circumference of the switch 47. The two ends of the rod-shaped driver 40 extend into recesses 51, 52 in rotatably mounted rings 53, 54. The recesses 51, 52 each comprise a section 51a, 52 which is in the rest position of the rings 53, 54 in congruence with the radial slot 41 a and a circularly curved section 51 b, 52 b adjoining it approximately at right angles.
ίο The section 51a of the recess 51 is limited in the adjustment direction indicated by the arrow α by adjusting stops 55, 55 a forming edges, while the end of the slot-shaped section

51 b forms a further adjusting stop 56. The distance of the section 51b from the optical axis ZZ is dimensioned to be equal to the distance of the guide slot 44 from this axis. In a similar way, the section 52 a of the recess

52 limited by an adjusting stop 57 and the section 526 by an adjusting stop 58, wherein the distances of the adjusting stop 58 and the guide slot 43 from the optical axis in turn are dimensioned the same.

A recess 59 is provided on the inner circumference of the ring 54, the radial end edges of which cooperate with a shoulder 60 of the inner tube 38 to limit the rotational path of the ring 54 can. In the rest position shown in FIG the ring 54 is held by means of a spring 61 in a position in which the boundary edge 59 α rests against the approach 60 of the inner tube. In the same way, the ring 53 with a recess 62 is on Provided inner circumference with a not shown in the drawing approach of the inner tube 38 can work together. The ring 53 is also under the action of a spring 63 in his Held at rest.

The rings 53, 54 are each provided with a resilient carrier 64 and 65 extending parallel to the optical axis ZZ. At the end of each carrier 64 or 65, a locking tooth 66 or 67 is arranged. The locking teeth 66, 67 can interact with locking teeth 68, 69 of two rings 70, 71 which are also rotatably mounted concentrically to the optical axis. The carriers 64, 65 are shown in FIG. 1 shown extended for a better overview; in one embodiment, the rings 53, 70 and 54, 71 are located directly next to one another. The ring 70 is provided with knurling 72 for manual operation and an aperture scale 73, while the ring 71 has a similar knurling 74 and an exposure time scale 75. The ring 70 is connected to a movable diaphragm lamella control ring of an iris diaphragm known per se via a projection, not shown in the drawing, which extends through a recess 76 of the auxiliary adjusting ring 1. An exposure time control curve 77 is cut into the ring 71, against which a control pin 78 of a time control mechanism known per se of a central shutter rests. A tension spring 79 is stretched between the rings 53 and 70 and holds the locking tooth 66 in contact with the first tooth of the locking toothing 68. In a similar way, a tension spring 80 is tensioned between the rings 54 and 71 and holds the locking tooth 67 in contact with the first tooth of the locking toothing 69.

A lever 81, which carries a locking rod 82, is pivoted rotatably on the support plate 42. The bolt

5 6

rod 82 extends parallel to the optical pointer 25 has pivoted. During this adjusting movement, the axis ZZ and passes through a control slot 83, based on the one shown in FIG. 1, which is cut into the changeover switch 47. The adjustment position, the auxiliary adjusting ring 1 via the pin 36 and the locking rod 82 is hinged to the support plate 42, the adjusting ring 37 and thus the driver 40 mitgenom über the lever 81, that they are in the in 5 men. As a result of the installation of the driver 40 on the Stell-F i g. 1 reproduced rest position before cutting stop 55a, the ring 53 has been rotated by the same amount 84, 85, 86 on the outer circumference of the support plate 42. Since the ring 53 is connected to the ring and the rings 53 and 54 as well as radial openings 70 via a tension spring 79, 87, 88, which form slits 89, 90 in the form of circular segments, of the ring 70 also follow this movement, the end of the in the Rings 70, 71 lead, stands. The io locking teeth 68 are always in contact with the locking tooth 66 slot 89 and the slot 89 with it remains in the rest position. As a result of this movement, the aligned region 90 α of the slot 90 is only changed by the smooth next to the aperture. The walls limited, while a wall of the exposure time, however, is not affected portion 90 b of the slot 90, a detent toothing been, as the follower 40 bears in the region 52 b 91st The locking bar 82 can move freely into the area 15 of the recess 52,
of the angled end 5 λ of the arm 5 of the measuring At the end of the adjustment range of the aperture button 6 is extended and rests on the control surface 83 α actuator 53, 70, the driver 40 runs against that of the control slot 83 under the action of a spring stop 58 of the exposure time adjuster 54, 71 103 at. The end 5 a has a Ausneh- and takes this in the further course of the setting 5 b , into which the locking rod 82 is inserted 20 movement. This calls for an adjustment of the steering wheel. Pin 78 of the time rulebook. As soon as the

In the rings 70 and 53 and in the support plate 42 receiver 40 has reached the adjusting stop 58, remains

are also recesses 92, 93, 94 for the passage of the ring 70, since the diaphragm blades are now

of the pin 36, which the auxiliary adjusting ring 1 with the adjusting are converted into an end position. The ratchet tooth

ring 37 connects, incised. 25 66 can therefore under tension of the spring 79 of

The rings 70, 53, 37, 54 and 71 are lifted off within the end of the locking teeth 68,

a fixed outer tube 95 is arranged. The tube After the exposure measurement and

95 has an annular slot for the passage of triggering a recording via a trigger 102 of the changeover switch 47 and bears a mark 96 for the finger rest 8 of the measuring button 6 to be released. Adjustment of the scale 50 of the switch 47. The 3 ° This now reverses under the action of the return tube 95 is still provided with a segment-shaped hollow spring 9, which is stronger than the drive spring 4 provided cutout 97 in which is measured in the hand, contrary to the Direction of arrow b in the setting position, the knurls 72, 74 of the rings 70, 71 in FIG. 1 starting position shown. Here are freely accessible for manual operation. In this case, on the one hand, the attachment ring is attached to the surfaces 35 adjacent to the cutout 97 via the auxiliary adjusting ring 1 and, on the other hand, the adjusting ring 37 with two further adjustment marks 98, 99 is attached. Taken this. This movement is followed by the co-71 connected to the adjusting ring 37 with the scales 73, 75 of the rings 70, levers 39. taker 40. It can therefore also the rings 53

To prevent accidental operation of the rings 70 and 54 under the action of their return springs 61, 71 after switching the camera to automatic 40 and 63, turn the radial limit exposure control off, the recess 59 is on the circumferential edge 59 a of the recess 59 again switch 47 two cover plates 100, 101 attached. Approach 60 and the corresponding boundary edge. The cover plates 100, 101 are arranged so that the recess 62 comes to rest against a similar stop in the setting positions of the switch 47, in which the fixed inner tube comes to rest. As a result of an automatic control, the section 45 of the resilient tensioning of the rings 53, 70 under 97 and thus the knurls 72, 74 outwardly cover each other by means of the spring 79 and the rings 54, 71, on the other hand in the adjustment position for hands with each other By means of the spring 80, the aperture and exposure time setting rings 70 and 71 also return to their original position,
so in the space between the outer If in the camera shown in the AusTubus and the setting rings are inserted that 50 starting position for the automatic control, the knurls 72, 74 from the outside freely accessible aperture fully open and the shutter on. A trigger 102 is provided for triggering. The longest automatically controllable time is set, but the measuring button 6 can also directly effect the above-described control program time-shutter release of the shutter. den pairings that work in any lighting condition

Should a picture be taken with the camera with the greatest possible depth of field Exposure control to be performed, so afford.

the changeover switch 47 is first turned so far as to switch to another control program

until the desired symbol on the scale 50 of the mark, the switch 47 is rotated until the

96 faces. The camera then becomes symbol II or III on the scale 50 of the mark 96 directed at the subject to be recorded and facing the measuring 60.

button 6 by means of the finger rest 8 in the direction of, for example, the symbol II is pressed on the mark 96 arrow b. The auxiliary can now be set, so the necessary rotation has to rotate the adjusting ring 1 in the direction of the arrow α for as long as the changeover device 47 causes the control cam to be adjusted until the one with the ring 1 via the pin 10 and the 48. This adjustment causes a movement of the fork 11 connected scanning slide 12 first 65 of the driver 40 in the direction of the arrow c along the rotation of the radial slot 41 clamped to the level of the lead coil pointer 25 and then the slot 44. Now there is one tracking pointer 33 up to the stop on the moving coil end of the driver 40 in front of the section 51b,

while the other end is in front of the adjusting stop 57 . When the auxiliary adjusting ring 1 and the adjusting ring 37 are rotated, the exposure time adjuster 54, 71 are first actuated via the actuating stop 57 and only then the diaphragm adjuster 53, 70 is actuated via the actuating stop 56. This control program ensures that the time-diaphragm pairing which is most favorable for recording moving objects is automatically set at any brightness.

If the symbol III of the scale 50 is set to the mark 96 , the driver 40, as a result of the inclination of the control cam 48 , moves in front of the opening of the master control cam 45 in the radial slot 41. One end of the driver 40 is in contact with the adjusting stop 55, while the other end of the driver 40 rests against the adjusting stop 57 . When the adjusting rings 1 and 37 are subsequently rotated in the direction of the arrow α , the driver 40 is guided along the control cam 45 with ongoing adjustment relative to the adjusting ring 37 in the direction of the arrow c. Here, the two rings 53, 54, which are now both actuated simultaneously by means of the driver 40 via the adjusting stops 55, 57 , each rotate by half the angle of rotation that the auxiliary adjusting ring 1 covers. This ensures that the product of the aperture and exposure time values in any position is equal to the measured light value, which is directly proportional to the angle of rotation of the auxiliary adjusting ring 1. A control program of this type provides a time-aperture pairing for each brightness, which makes it possible to also record moving subjects without having to forego a larger depth of field.

As shown in FIG. 2, the symbol H for the manual setting is set to the mark 96, the cover plates 100, 101 first expose the cutout 97 and thus the knurls 72, 74 . At the same time, the locking bar 82, which is now in the area 83 b of the control surface 83 α , can be adjusted in the direction of arrow d. Here, the locking rod 82 enters the cutouts 84, 85, 86 of the support disk 42 or the rings 53, 54 . At the same time, the two ends of the locking bar 82 are inserted through the openings 87, 88 into the slots 89, 90 in the rings 70, 71. In addition, the locking bar 82 enters the recess 5 b of the arm 5 of the measuring button. As a result of this movement, the locking bar 82 has, on the one hand, blocked the measuring button 6 against displacement in the direction of arrow b . In the same way, the rings 53, 54 have been secured against rotation.

The rings 70 and 71 can now be adjusted by hand until the desired aperture or exposure time values of the scales 73 and 75 are opposite the corresponding marks 98 and 99. During this adjustment, the locking teeth 68 and 69 are respectively guided under the locking teeth 66, 67 fastened to the blocked rings 53, 54 by means of the resilient supports 64, 65. The locking elements ensure that the rings 70 and 71 remain in the set positions and cannot return to their original positions under the action of the springs 79 and 80 after the knurls 72, 74 have been released.

If, after taking a picture with manual setting of aperture and exposure time, another picture is to be taken with automatic exposure control, the user of the camera rotates the rings 70, 71 by means of the knurls 72, 74 counter to the direction of the arrow α until the locking teeth 66, 67 emerge from the locking teeth 68, 69 . An automatic control program can now be set by actuating the switch 47.

In the exemplary embodiment shown, there is also the possibility of manually setting exposure times that cannot be set within the framework of the automatic exposure control. These are preferably opening times of more than ^{1 to} ₃₀ seconds. For this purpose, after switching to manual operation, the ring 71 is rotated by means of the knurling 74 against the direction of the arrow a. The locking bar 82 comes into the area of the locking toothing 91. The arrangement is such that the locking bar 82 can engage in the locking toothing 91 under the action of the spring 103 and thus holds the ring 71 in the respectively set position.

The embodiment according to FIG. 3 differs from the arrangement according to FIGS. 1 and 2 only by a different design of the switch. Instead of an annular changeover switch with a control cam, a changeover slide 120 is provided here. The slide has an elongated hole 121 into which two pins 122, 122 ″, which are connected to a wall 123 of the camera, engage, so that a rectilinear displacement of the toggle slide 120 in or against the direction of the arrow / is possible. The slide 120 is rigidly connected to a finger rest 124 which is freely accessible on the outside of the camera and to a pointer 130 which interacts with a setting scale (not shown). A nose 125 is provided at one end of the slide 120. The nose 125 may for determining the changeover slider 120 in four different positions of adjustment with indentations 126, 126 a, 126 b and 126 c a camera permanently connected in parallel to the adjustment path of the slider 120 disposed detent spring 127 cooperate.

The switch slide 120 also carries an arm 128, on the middle part of which the driver 40 rests under the action of the spring 49. The arm 128 thus replaces the control cam 48 according to the exemplary embodiment according to FIG. 1 and 2. The free end 128 a of the arm 128 is bent at right angles and has a control surface 129 for the locking bar 82.

To switch to another, automatic control program, the switch slide 120 is operated by means of the finger rest 124, starting from the sequence shown in FIG. 3 is adjusted in the direction of the arrow / until the nose 125 engages in one of the indentations 126 or 126 ″ and the pointer 130 points to the symbol for the desired control program. During this adjusting movement, the driver 40 is again taken along via the arm 128 and adjusted along the radial slot 41 in the support plate 42. The locking bar 82 slides along the section 129 ″ of the control surface 129 without entering the incisions 84, 85, 86 or the openings 87, 88 of the support plate 42 or the rings 53, 54, 70 and 71.

If the camera is to be switched to manual operation, the switchover slide 120 is switched using the

Finger support 124 is displaced against the direction of the arrow / until the nose 125 engages in the indentation. During this adjustment movement, the locking rod 82 slides along the section 129 b of the control surface 129 and can thus be adjusted in the direction of the arrow d and thereby the rings 53, 54 and by entering the recess 5 in the same way as already described in the first embodiment b of the arm 5 secure the measuring button 6 against adjustment. The further structure of the arrangement according to FIG. 3, like its function, agrees with the device according to FIG. 1 and 2 match.

F i g. 4 shows a further possible embodiment of the changeover device in an exposure control device which does not have any means for manual setting of the exposure time and aperture. A changeover lever 142 is mounted on a camera-fixed partition 140 so that it can rotate about an axis 141. The switching lever 142 is designed as a two-armed lever, one arm of which carries a button-shaped handle 143 which is arranged freely accessible on the outside of the camera. Against the other arm 142 a, the driver 40 is in turn guided by means of the spring 49. In the switching lever 142 , three recesses 144, 144 a, 144 & are provided. To fix the switching lever 142 , a spring-action locking ball is provided in the partition 140 , which can optionally enter one of the three recesses.

Since no manual setting of the exposure time and aperture is provided in the illustrated embodiment, the locking bar 82 and the locking teeth 68, 69 can be omitted. The rings 53, 70 are therefore only connected to one another via a pin 145 which is guided against a stop surface 146 by means of the spring 79. In the same way, the rings 54, 71 are connected via a pin 147 which is guided against a stop surface 148 by means of the spring 80.

To switch the camera to the desired control program, the switch lever 142 is pivoted by means of the handle 143 in the direction of arrow g until a mark 149 on the handle 143 is set to the symbol of a scale 150 corresponding to the desired control program. During this movement, the driver 40 is again adjusted along the radial slot 41 in the support plate 42 via the arm 142 α.

The further structure of the arrangement according to FIG. 4 and its function is in turn identical to that already described embodiment according to FIG. 1 and 2 match.

The embodiment according to FIG. 5 to 7 show another embodiment in which the adjusters for time and aperture can be connected to one another by means of a differential gear. Here is how, in particular, FIG. 6 shows that a bearing bush 200 is provided concentrically to the optical axis ZZ. A carrier disk 201 is firmly connected to the bearing bush 200 . A guide ring 22 for a lever-like actuator 203 is rotatably mounted on an inner sleeve 201 b of the carrier disk 201 , likewise concentrically to the optical axis ZZ . A slot 204 is cut into the free end of the lever-like actuator 203 , into which a pin 205 of an actuating rod 206 engages. A button-shaped measuring button 207 is placed on the upper end of the actuating rod 206 with the interposition of a compression spring, on which a return spring 209 engages via a projection 208. A scanning head 210 , which can interact with a two-armed pointer 211 of a moving-coil instrument 212 , is placed on the lower end of the actuating rod 206.

The actuator 203 carries an axle 213, on the end of which a pinion 214 is placed so that it can rotate freely. At

ίο the sleeve 201 b of the carrier disk 201 is rotatably mounted, also concentric to the optical axis ZZ, a diaphragm adjusting ring 215 . The diaphragm adjusting ring 215 is provided with an internal toothing 216 in which the pinion 214 engages. The arrangement is such that the axis 213 penetrates a slot 217 in the carrier disk 201 and a further slot 218 in the diaphragm adjusting ring 215. The lengths of the slots 217, 218 are dimensioned to be at least equal to the entire adjustment path of the actuator 203 , while the width of the slots 217, 218 exceeds the diameter of the axis 213. The diaphragm adjusting ring 215 is also provided with two arms 219 and 242 extending parallel to the axis ZZ in opposite directions. The arm 219 engages in a recess 220 of an annular diaphragm adjuster 221 rotatably mounted on the bushing 200 , while the arm 242 is used to couple the diaphragm adjusting ring 215 to a known lamellar bearing ring of an iris diaphragm, not shown.

The bearing bush 200 engages with its bottom 200 α and its edge 200 b around the diaphragm adjuster 221 in such a way that only the edge 221 α of the diaphragm adjuster 221 provided with finger rests 222 and a diaphragm value scale 223 is accessible from the outside.

Between the iris adjusting ring 215 and the aperture adjuster 221 of the sleeve is on the inner surface 201 of the carrier disc 201b rotatably and slidably mounted a reversing ring 224 in the axial direction. The switching ring 224 has an inner, sleeve-shaped part 224 a, in which four annular grooves 225, 225 a, 225 b, 225 c are cut. Laying down the reversing ring 224 in the axial direction is provided in an annular groove in the sleeve 201Z "a spring retaining ring 226, which can engage one of the annular grooves 225-225 c. The substantially disk-shaped central portion of the reversing ring 224 is provided with a recess 227 for the passage of the arm 219 of the aperture adjusting ring and with an exposure time control cam 228 with a recess 243 of the aperture adjusting ring 215 freely passing through control pin 229 of a time of rules known per se, one in the Drawing not shown behind the guide ring 204 arranged central lock can interact. The outer edge 224 b of the switching ring 224 is also bent in the axial direction and is provided with two finger rests 230 and a window 231 .

Between the part 224 a and the outer edge 224 b of the switching ring 224 , two further shoulders 224 c, 224 d extending in the axial direction are provided. The shoulder 224 c carries an external toothing 232 and an axial locking pin 233.

The toothing 232 is arranged in such a way that, starting from the position shown in FIG. 6 shown setting position, after a corresponding axial displacement of the switching ring 224 in the toothing of the pinion

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11 12

214 can intervene. The locking pin 233 can interlock the scanning head 210 on the pointer 211

against comes to rest in the case of an even greater axial displacement, the actuator 203 is moved by one

Exercise of the switching ring 224 in a hole 234 in the amount that corresponds to the measured light value,

Aperture adjustment ring 215 are introduced. pivoted.

A brake spring 5 is fixedly attached to the carrier disk 201. The pinion 214 follows this pivoting movement.

235 connected. The spring 235 is several times since the diaphragm adjusting ring 215 in the described

cranked. In the setting position shown in FIG. 6, the bend 235α is braked by the brake spring 235

If the first setting position shown is on a brake, initially only the toothing 232

surface 215 α of the aperture setting ring 215 and sets and thus the switching ring 224 with the exposure

Therefore, the adjustment of this ring turn a counter-io time control curve 228. This movement calls

opposed. Another bend 235 b shows a change in the exposure time. Is the

arranged that they are in the third setting of the measured brightness and thus the adjustment of the

Switching ring 224, in which the spring snap ring 226, the actuating rod 206 and the actuator 203 are larger

engages in the annular groove 225 b , to rest on one than the entire setting range of the exposure time,

Braking surface 224 e of approach 224 d comes, in which 15 remains at the end of the exposure time control range

fourth setting position, however, stand in a to the braking surface of the switching ring 224, for example through

224 e subsequent groove 236 can collapse. Start of the control pin 229 towards the end of the

The carrier disk 201 runs in an outer sleeve of the control cam 228. Now, since the toothing 201 α , which is firmly fixed with a front plate 237 of the 232, the pinion 214 is connected to the aperture setting camera. The sleeve 201a will partially actuate 20 ring 215 over the toothing 216 so long, from the outer edge 224 b of the switching ring 224 until the adjustment movement of the actuating rod 206 overlaps and has one in the area of the window and thus of the actuator 202 by the support of the abster 231 arranged scale with exposure time probe 210 on the pointer 211 is ended. Here value 238. The scale 238 is designed so that when the bend 235 a of the brake spring 235 slides only one exposure time value through the window 25 along the braking surface 215 α. When further Ein-231 is visible. To adjust, pressing the measuring button 207 now only adjusts the edge 200 b of the socket 200 with a mark 239 - nor the button 207 carried opposite the actuating rod, which interacts with the aperture value scale 223 while pressing one between them. Furthermore, on the outer edge 224 b both parts provided spring,
of the switching ring 224, a mark 240 is provided, 30 After the measuring button 207 is released, this goes under the action of the return spring 209 against the program to select a symbol in the direction of the arrow i in the starting position to the optical axis extending scale 241 indented. Here, the operating rod 206 and can be adjusted. thus via the pin-and-slot connection 204, 205 of the

In the in F i g. 5 to 7 reproduced setting 35 actuator 203 returned to the starting position,

The exposure time and the aperture of this movement can be followed via the differential gear

Hand regulated. To do this, on the one hand the 214, 216, 232, the aperture setting ring 215 and the

Aperture switch ring 224 which can be operated by means of the finger rests 222.

adjuster 221 rotated until the desired one. It is assumed that in the starting position the aperture value of the scale 223 is opposite to the mark 239 for the automatically regulated control programs. The exposure time is fully opened by the shutter and the exposure time is regulated on the turn of the longest, automatically adjustable, exposure switch ring 224 that can be operated by means of the finger rests 230. The time value is set, so the previously described ring224 delivers adjusted until the desired level control program an exposure time-diaphragm exposure time value is visible in the window 231. The switch ring 224 is particularly suitable for 45 pairings, which are used to accommodate fast moving or setting movements.
To switch over to the exposure time control curve 228 on the scale 241 with II, during the designated control program, the switch-over ring aperture setting ring 215 is pressed in over the arm 242 of the moving 224 until the mark 240 drives the lamellar bearing ring . 50 symbol II of the scale 241 is opposite. Here is

To switch to automatic exposure control, insert spring snap ring 226 into ring groove 225 b

The diaphragm adjusters 221 and 221 are first stepped on. At the same time, the braking surface 224 e

the changeover ring 224 is rotated until the opposite under the bend 235 & the brake spring 235

if necessary specially marked initial value shifted and at the same time the offset 235 α from the

the aperture scale 223 of the mark 239 faces 55 braking surface 215 ″ lifted off.

and the mark 240 is set on the scale 241. There is now an exposure measurement in the already

The switching ring 224 can now be moved in the direction of the above-described manner by pressing in the

Arrow h . Measuring key 207 initiated, the actuator takes 203

If the switchover ring 224 first moves the diaphragm adjusting ring so far over the pinion 214 that the mark 240 of the number I of the scale 241 60 215 with it over its entire control range. Only opposite, then the spring snap ring is closed - then, when it is appropriately large, it can emerge from the annular groove 225 and then, in assumed brightness, the switch-over ring 224 collapses under the annular groove 225 α . This shifting of the force of the brake spring 235 actuated has the effect that the external toothing 232 of the surrounding area, since the diaphragm adjusting ring is now held in its position in its limit switch ring 224 in the toothing of the pinion 214 65. The control program II supplies has occurred. If you press the exposure time-aperture combinations for measuring button 207 in this setting position and thus adjusts the actuation recordings, in which a great depth of field 206 so far in the direction of the arrow i, until it is desired.

If the switching ring 224 is adjusted so far that the mark 240 is opposite the symbol III of the scale 241, the spring snap ring 226 has entered the annular groove 225 c . At the same time, the locking pin 233 has been inserted into the bore 234. The diaphragm setting ring 215 and the switching ring 224, via which the exposure time is controlled, are therefore firmly connected to one another. At the same time, the bend 235 b of the brake spring 235 has entered the recess 236. The groove 236 is arranged in such a way that, in this setting position, the braking force of the spring 235 acts approximately uniformly on the diaphragm adjusting ring 215 and the switching ring 224.

In the case of an exposure measurement, which in turn is carried out in the manner already described above, the actuator 203 now takes the diaphragm adjusting ring 215 and the switching ring 224 by the same angular amounts with, namely each of the two rings 215, 224 is rotated by the amount by which the actuator 203 is also pivoted. This control program therefore provides time-aperture combinations, which also allow moving subjects to be recorded without largely having to forego the depth of field have to.

In the exemplary embodiment according to FIG. 8, an auxiliary adjusting ring 250 is again mounted concentrically to the optical axis ZZ so as to be rotatable. The auxiliary collar

250 has an angled extension 251 with a pin 252. The pen 252 rests on an arm 253 of a measuring button 254 which is provided with a finger rest 255. One end of a return spring 256 acts on the measuring button 254, the other end of which is connected in a fixed manner to the camera and which tends to move the measuring button 254 in the direction of the arrow k .

The auxiliary adjusting ring 250 also carries a pin 257 via which a fork 258 of a scanning slide engages. This scanning slide and the downstream parts of the light metering device are also designed like that in the embodiment according to FIG. 1 and 2 reproduced parts.

The auxiliary adjusting ring 250 is parallel to one another Optical axis arranged arm 259 with the adjusting ring 260 in connection. On the adjusting ring 260 attacks one end of a drive spring 261, the other end of which is connected to the camera and which has the tendency to keep the arm 259 against the edge

251 α of the approach 251 and thus the pin 252 to lead against the arm 253. The mainspring 261 is weaker than the return spring 256, so that the spring 256, the rings 250, 260 in one by the end of the displacement path of the measuring button 254 can hold certain rest position.

On the adjusting ring 260, one driver 264, 265 is rotatably mounted about axially parallel pins 262, 263. The drivers 264, 265 are designed as two-armed, approximately semicircular curved levers. That one end of each lever carries a control cam

264 a or 265 a. These cams cooperate with a control cam 266, which is fastened together with a switch ring 267 on a carrier 268 which is rotatably mounted concentrically to the optical axis. The free ends 264 b, 265 b of the driver 264,

265 interact with pin-shaped adjusting stops 271, 272.

The point stop 271 is placed on an intermediate ring 273 which is also rotatably mounted concentrically to the optical axis ZZ. The intermediate ring 273 has an angled arm 274 in the axial direction on whose edge a α 274 with an edge 275 of a lug 275 of a diaphragm blades adjustment ring can cooperate 276th In the diaphragm lamella adjusting ring 276, lamella control cams 277 are cut for the diaphragm lamellae, not shown in the drawing, which are rotatably arranged within a housing 285 which also accommodates the shutter.

The point stop 272 is attached to a shoulder 278 of a further intermediate ring 279. Of the Intermediate ring 279 stands over an axially angled tab 280 with a shoulder 281 of an exposure time setting ring 282 in connection. The tab 280 rests against the edge 281a of the projection 281. The exposure time setting ring 282 has an exposure time control curve 283, which is connected to a control pin 284 of the also in the housing 285 arranged time rule work is in connection. One engages each of the adjusting rings 276 and 282 Tension spring 286 or 287. The tension springs 286, 287 tend to move the rings 276, 282 in Direction of the arrow / to twist and the stops 288, 289 of the rings in contact with stop pins 290 to hold, which are attached to the housing 285 and of which only one in the drawing is shown.

A diaphragm adjuster 291 and an exposure time adjuster 292 are rotatably mounted concentrically to the diaphragm lamella setting ring 276 and the exposure time setting ring 282. The two adjusters 291, 292 have finger rests 293, 294 for actuation and are also each provided with a locking toothing 295, 296 over part of their circumference. The adjusters 291, 292 each carry a radial tab 316 and 317, on which the lugs 275 and 281 rest with their edges 275 a and 281 a under the action of the springs 286, 287.
The switching ring 267 carries a pin 297 which can interact with a control surface 298 of a slide 300 which is mounted displaceably on the pin 299 fixed to the camera. The slide 300 is under the action of a tension spring 301, which tends to guide the control surface 298 into the adjustment path of the pin 297, and also carries a pin 302 which engages in an elongated hole 303 of a lever 305 firmly attached to a switching shaft 304 . Two cams 306, 307 are placed rigidly on the switchover shaft 304, on each of which a latching lever 310, 311 rests under the action of tension springs 308, 309. The locking levers 310, 311 are rotatably mounted around pins 312, 313 fixed to the camera. The free ends of the locking levers 310, 311 each carry a locking pin 314, 315. The locking pins 314, 315 can interact with the locking teeth 295, 296.

In the in F i g. 8 reproduced setting position is the control surface 298 of the slide 300 under the effect the tension spring 301 is guided into the adjustment path of the pin 297. Here, the switching shaft 304, which is connected to the slider 300 via the pin-and-slot connection 302, 303, one such Position one that the cams 306, 307 the locking pins 314, 315 of the locking lever 310, 311 of the locking teeth 295, 296 take off. Furthermore, there is the one rigidly connected to the switching ring 267 Control cam in a position in which the control cam 264 a of the driver 264 on the raised area 266 a of the control cam 266 is applied. This will

the end 264 α of the driver 264 is guided against the adjusting stop 272 for the exposure time adjusting ring 282. The slewing cam 265 a of the driver 265 , on the other hand, rests loosely on the area 266 b of the control cam 266 , so that the end 265 ″ is lifted off the actuating stop 271.

If in the setting position according to FIG. 8 the measuring button 254 is pressed in opposite to the direction of the arrow k, the auxiliary adjusting ring 250 and the adjusting ring 260 can rotate in the direction of the arrow m under the action of the drive spring 261. This rotation can continue until the slide connected to the fork 258 is fixed according to the measured brightness. During this movement, the adjusting ring 260 initially entrained the adjusting stop 272 of the intermediate ring 279 connected to the exposure time adjusting ring 282 via the driver 264, thereby causing a change in the exposure time.

If the adjusting ring 260 can rotate by an angular amount that is greater than the adjustment path of the exposure time adjusting ring 282 , on the one hand at the end of the time setting range the control cam 264 a of the driver 264 slides from the area 266 a to the area 266 d designed as a segment of an Archimedean spiral the control curve over. This ensures that the driver 264 holds the adjusting stop 272 in the end position reached when the adjusting ring 260 is further rotated. At the moment when the control cam 264 a slides from the area 266 a into the area 266 a *, the driver 265 takes the adjusting stop 271 with its end 265 b. With a further rotation of the adjusting ring 260 in the direction of the arrow m , the intermediate ring 273 and thus the diaphragm lamella adjusting ring 276 are now adjusted via this stop.

The adjusting ring 260 can, however, also be designed so that the adjusting stops 271, 272 pass through recesses 269, 270 , the ends 269 α, 270 α of which form fixed driver stops. In this case, the diameter of the control cam 266 is dimensioned so small that the associated with the trailing adjuster carrier, b with its end 265 does not come thus in the described adjustment of the follower 265 for engaging the locking stop 271, so that this actuating stroke by means of the Mitnehmeranschlages 269 α is adjusted.

If the arrangement is such that, taking into account a forward stroke of the slide carrying the fork 258, the exposure control is carried out starting from the largest aperture and the longest exposure time, with which unshakeable pictures can still be made by hand, then the prescribed control program is Particularly suitable for taking pictures of fast-moving subjects.

After the measuring button 254 has been released , it returns to its starting position under the action of the return spring 256. The arm 253 rotates the auxiliary adjusting ring 250 and thus the adjusting ring 260 against the action of the drive spring 261, while the adjusting rings 276, 282 are moved into their rest positions determined by the stop pins 290 under the action of the springs 286, 287.

To set the second automatic control program, the changeover ring 267 is rotated through 180 ° together with the control cam 266. The control cam 265 α of the driver 265 now rests on the area 266 α of the control cam, while the driver 264 can be freely pivoted about the pin 262 through a certain angular range.

When the measuring button 254 is actuated, the control takes place in a similar manner to the first control program already described above, with the only difference that first the diaphragm lamella adjusting ring 276 via the driver 265 and only then the exposure time adjusting ring 282 via the

ίο driver 264 are actuated.

To set the third control program, the switching ring 267 is rotated in such a way that the control cams 264 a, 265 α simultaneously come to rest on the areas 266 b, 266 c of the control cam. If the measuring button 254 is now actuated and the arm 253 is displaced against the direction of the arrow k , the auxiliary adjusting ring 250 can turn together with the adjusting ring 260 again in the direction of the arrow m until the control slide of the scanning device is set according to the determined brightness and This prevents further rotation of the actuator via the fork 258 and the pin 257.

In this setting position, the free ends 264 b, 265 b of both drivers 264, 265 are initially in contact with the respectively assigned positioning stop 271, 272 . As a result of the formation of tax areas 266 b,

266c , which continuously reduce their diameter in the direction of the adjustment movement, the drivers 264, 265 can rotate continuously with respect to the adjusting ring 260 during the adjustment movement. This measure ensures that the two adjusting rings 276, 282 each cover approximately half the angle of rotation that the adjusting ring 260 passes through.

As a result of the simultaneous adjustment of exposure time and aperture, this control program is therefore Particularly suitable for taking pictures of moving subjects, which also have a certain depth of field is desirable.

If the exposure time and the aperture are to be set manually, the toggle ring is used

267 rotated until the pin 297 displaces the slide 300 via the control surface 298 in the direction of the arrow η. This adjustment causes a rotation of the switching shaft 304. Here, the ends of the locking levers 310, 311 slide under the action of the tension springs 308, 309 along the outer surface of the cams 306, 307 until the locking pins 314, 315 into the locking teeth 295, 296 of the diaphragm adjuster 291 or the exposure time adjuster 292 occur. The adjusters 291, 292 can now be set to the desired exposure values by means of scales which are known per se and are not shown in the drawing. With this setting, the diaphragm adjuster 291 or the exposure time adjuster 292 are again rotated against the action of the springs 286, 287 in the direction of the arrow m and take the diaphragm lamella adjusting ring 276 and the exposure time adjusting ring 282 with it via the tabs 316 and 317, respectively.

After the setting has been carried out, the locking pins 314, 315 hold the adjusters 291, 292 and thus the adjusting rings 276, 282 in the position into which they have been transferred, through their engagement in the locking teeth 295, 296.

If pictures with automatic exposure control are to be taken again, the switch ring 267 is rotated until the

desired automatic control program is set. During this switchover, the pin 297 releases the control surface 298 so that the slide 300 can now slide under the action of the tension spring 301 against the direction of the arrow η . As a result, the switching shaft 304 is in turn switched to the position shown in FIG. 8 , in which the cams 306, 307 have pivoted the locking levers 310, 311 in such a way that the locking pins 314, 315 are out of engagement with the locking teeth 295, 296. At the moment when the locking pins emerge from the locking teeth, the adjusters 291, 292 together with the adjusting rings 276, 282 can return to their starting position under the action of the springs 286, 287.

The invention is not limited to the illustrated embodiments limited, in particular scanning devices other than those shown can also be used and locks of other types, for example slot locks, are used.

Claims (22)

Patent claims: 1. Camera with an automatic exposure control device, its time and aperture adjusters according to several different control programs are adjustable, characterized that for all programs a common measuring button (6, 207, 254), the movement of which initiates the exposure measurement and the Adjusting devices, and a switch for preselecting the desired control program are provided. 2. Camera according to claim 1, characterized in that the switch (47, 120, 142, 267) with a control surface (48, 128, 142 a, 266) for at least one driver (40, 264, 265) for Actuation of the adjuster is firmly connected. 3. Camera according to claim 1 or 2, characterized in that the switch (47, 267) as is formed concentrically to the optical axis arranged ring, which has a radial control cam (48, 266). 4. Camera according to claim 2, characterized in that the changeover switch (142) as a two-armed Lever is formed, one arm of which carries a handle (143) and the other arm (142 a) forms the control surface for adjusting the driver (40). 5. Camera according to claim 1 or 2, characterized in that the switch (120) as linearly displaceable slide is formed which carries the control surface and with a handle (124) is connected. 6. Camera according to claim 1 or 2, characterized in that the changeover switch (224) is off an adjusting ring which can be converted into several adjustment positions in the direction of the optical axis. 7. Camera according to one of the preceding claims, characterized in that the Changeover switch (47, 120, 224, 267) can be moved into a further setting position in which the adjuster (70, 71; 221, 224; 291, 292) are released for manual operation. 8. Camera according to claim 7, characterized in that the changeover switch (47) in the setting positions for automatic exposure control effective cover means (100, 101), such as Cover plates for the manual adjustment means (72, 74), e.g. knurls or finger rests, the exposure factor adjuster (70, 71) controls. 9. Camera according to claim 7, characterized in that the changeover switch (47, 120) has a locking device (82, 5 b) for the measuring button (6) and / or the setting rings for exposure time and aperture (53, 54, 70, 71) controls. 10. Camera according to one of claims 7 to 9, characterized in that the changeover switch (47, 120, 267) a locking device (66 to 69; 298 to 315) for the action of return springs (79, 80; 286, 287) standing exposure factor adjusters (70, 71; 291, 292) controls. 11. Camera according to one of claims 7 to 10, characterized in that for control two rings (53, 70 and 54, 71) are provided for aperture and exposure time, respectively where the one ring (53 or 54) interacting with the driver (40) adjusting stops (55 to 58) and the other ring (70 or 71) with the setting elements (e.g. 77), such as the exposure time control curve or movable diaphragm lamella bearing ring, is connected or itself this setting member forms and manual setting means (72, 74), such as. B. Finger rests, knurls, has, the two rings (53, 70 or 54, 71) each other by means of a only in the adjustment direction (α) effective driving coupling (66, 68, 79 or 67, 69, 80) connected are. 12. A camera according to claim 11, characterized in that the driver coupling has a as a resiliently mounted locking tooth (66, 67) comprises approach that is in the setting positions for automatic exposure control by means of the spring (79, 80) against the last tooth of a locking toothing (68, 69) is guided and in the setting position for manual operation in the locking teeth (68, 69) can intervene. 13. Camera according to claim 11 or 12, characterized in that the exposure time control curve (77) carrying ring (71) for setting long exposure times by hand an additional locking toothing (91) for the locking bar (82). 14. Camera according to one of the preceding claims, characterized in that the Changeover switch (224) as an adjuster for an exposure factor, e.g. B. as exposure time adjuster, is trained. 15. Camera according to claim 14, characterized in that for setting an exposure factor, z. B. exposure time, serving switch (224), z. B. for aperture that form the output members of a differential gear, the one coupling element controlled by the scanning device (206, 210, 211) of the exposure control device (214), for example a pinion or a lever, and the switch (224) in at least three Setting positions can be transferred, with the switch (224) with the exposure factor adjuster in one setting position (215) and the coupling member (214) locked, while the lock is released in the other two setting positions and the Changeover switch (224) or adjuster (215) are alternately braked. 709 618/307 16. A camera according to claim 15, characterized in that a cranked brake spring (235) is connected to a fixed support disk (201) which is unlocked in the two setting positions in which the differential gear (214, 215, 216, 224, 232) , is effective, wherein the brake spring (235) in the one setting position on the one output member (215) and in the other setting position on the other output member (224) of the differential gear brakes. 17. Camera according to one of claims 14 to 16, characterized in that a setting position for the switch (224) is provided in which the switch (224) and an adjuster (221) for a further exposure factor for independent setting of exposure time and aperture are freely adjustable by hand. 18. A camera according to at least one of claims 14 to 17, characterized in that the changeover switch (224) for fixing in the axial direction has a sleeve-shaped projection (224 a) with the number of setting positions corresponding annular grooves (225 to 225 c) into which can engage a aler in AXI ¹ direction against displacement secure spring retaining ring (226). 19. A camera according to at least one of claims 1 to 3, characterized in that with the switch (267) rigidly a control cam (266) for two of the exposure factor setting rings (276, 282) controlling drivers (264, 265) and a pin (297) which interacts with a slide (300) for actuating a latching device (298 to 315) for the exposure factor adjusters (291, 292). 20. A camera according to claim 19, characterized in that a control surface (298) of the slide (300) is guided under the action of a spring (301) in the adjustment path of the pin (297) of the switch (267). 21. A camera according to claim 19, characterized in that the control cam (266) has several control areas (266 a to 266 d) which cooperate with the drivers (264, 265) in different setting positions either one after the other or simultaneously. 22. Camera according to one of claims 19 to 21, characterized in that the adjusters (291, 292) via stop couplings (275, 316; 281, 317) which are effective only in the setting direction (m) with the under the action of return springs (286, 287) are connected to the adjusting rings (276, 282) for aperture and exposure time. Considered publications:
German utility model No. 1 789 865. Legacy Patents Considered:
German Patent No. 1 097 263. In addition 3 sheets of drawings 709 618/307 7. 67 © Bundesdruckerei Berlin