JP2772617B2 - Lens shutter type zoom lens camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] TECHNICAL FIELD The present invention relates to a lens shutter type zoom lens.
About the camera. [0002] 2. Description of the Related Art Autofocus lens
Many shutter-type cameras have been known in the past.
Generally, it is not possible to change the focal length of the photographic optical system.
No. In some cases, a focal length changing lens is included in the shooting optical system.
A bifocal distance lens shutter camera that can be inserted and removed
The camera is also known, for example,
Only two focal lengths can be used: Far, Standard and Tele
Cannot cover the intermediate focal length. this
Therefore, drawing using a zoom lens is a single-lens reflex
The fact is that it is limited to cameras. However,
Single-lens reflex cameras are replaced by lens shutter cameras
In comparison, expensive and heavy, beginner or intermediate
It is burdensome for those who use it. Especially for overseas travel
Travel or women who want to minimize the weight
For users, single-lens reflex cameras excel in depiction
Even if it is recognized, the external shape is large and the weight is heavy
Therefore, there is one side that is shunned. In such a case,
The user is lightweight and compact, but the focal length cannot be changed
Or a lens shutter camera that can be changed in two steps
Will be selected. In other words, the current lens shutter type camera
In LA, the focal length cannot be changed, or
It is common sense that only two-step changes are possible,
Users endorsed this and demanded a lens shutter camera.
ing. However, if a lens shutter with a zoom lens
If a digital camera is put into practical use, this will have an impact on society.
The impact is large, and it is expected that more users can be cultivated.
I will be waiting. In other words, it is too large with a single-lens reflex camera.
The current lens shutter camera is not enough
User. [0004] SUMMARY OF THE INVENTION The present invention relates to a single-lens reflex camera and a
Based on the above analysis of the current state of the shutter shutter camera
Motor-driven lens shutter with zoom lens
It is a compact camera that is compact when stored and can be operated
Excellent zooming performance and excellent position control of the zoom lens system.
The aim is to obtain a camera that can do this. [0005] SUMMARY OF THE INVENTION The present invention relates to a constituent lens of a zoom lens system.
A group is defined as a zoom section that changes its focal length,
Lens unit closer to the film side than the camera section
It is supported so that it can move to the
The zoom lens group is in the zoom section and stored from the zoom section
Position and the storage position.
Identify means by binary code
The motor that drives this zoom lens system and this motor
A manual zoom switch that gives forward and reverse rotation commands to the
The lens group of the lens system
That gives a forward / reverse rotation command to the motor to move between
Switch and motor control to control the energization of the motor
Means for identifying by means of this binary code and
With the motor control means, the zoom lens system
The manual zoom switch when the motor is
Enables rotation and is in the transition area by the main switch
Stop the motor from being energized, and reach the storage position
Sometimes it is controlled to stop the motor
And [0006] DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments.
I do. FIG. 1 shows the lens shutter camera of the present invention.
As shown schematically, the lens barrel block of the zoom lens
1. Finder and strobe block
2. Light emission of distance measuring device (AF device)
A unit 3, a light receiving unit 4, and a zoom motor 5 for zooming are provided.
I have. These elements are the fixed parts of the camera body.
2 (see FIGS. 2 to 4). That is, the base plate 6 is a mirror which is perpendicular to the optical axis.
The cylinder support plate 6a and the upper end of the lens barrel support plate 6a are at right angles.
And a horizontal support plate 6b which is bent
And a motor support plate 6c that is at a right angle to
The lens barrel block 1 is supported by the lens barrel support plate 6a.
You. In addition, the motor support plate 6c has an upper part on the lens barrel block 1.
The zoom motor 5 located at the center of the
On both sides of the motor 5, a beam source fixed to the horizontal support plate 6 b
The light unit 3 and the light receiving unit 4 are located. Finder block
2 is fixed to the front right side of the horizontal support plate 6b.
6e is fixed to the motor support plate 6c via the spacer 6f.
This is the gear train support plate that has been set. The lens barrel block 1 is driven by a zoom motor 5.
Driven. 6 to 1 show the structure of the lens barrel block 1.
0 will be described. The lens barrel support plate portion 6a of the base plate 6 includes
A rear fixing plate 11 is fixed via fixing screws 10.
After this, the fixing plate 11 is positioned parallel to and around the optical axis.
Four guide rods 12 are fixed, and this guide
A front fixing plate 13 is fixed to the tip of the rod 12.
The above is the main fixing element of the lens barrel block 1. Between the rear fixing plate 11 and the front fixing plate 13,
The mulling 14 is rotatably supported.
On the outer periphery of the ring 14 directly or via a gear train
Gear 15 is fixed with fixing screw 15a (FIG. 6).
Have been. This gear 15 is used to rotate the cam ring 14.
A sector gear that covers the surroundings may be used. For cam ring 14
The zooming cam grooves 20 and 21 for the front group and the rear group
Have been. FIG. 7 shows the expansion of the zooming cam grooves 20, 21.
In the drawing, the zooming cam groove 21 for the rear group is fixed at the wide-angle end.
Interval 21a, zooming section 21b, telephoto end fixed section 21c
doing. On the other hand, the zooming cam groove 20 for the front group
Is the opening / closing section 20a of the barrier block 30 and the lens storage
Section 20b, wide-angle end fixed section 20c, scaling section 20d,
Telephoto end fixed section 20e, macro extension section 20f, and
It has a macro end fixed section 20g. Of each of these sections
The rotation angle is the opening / closing section 20a of the zooming cam groove 20,
Of the lens storage section 20b and the wide-angle end fixed section 20c.
The total angle θ1 is the fixed angle at the wide-angle end of the zooming cam groove 21.
The angle is the same as the angle θ1 of the interval 21a, and the angle
The angle θ2 of the double section 21b is the same and the telephoto end fixed section
20e, macro feeding section 20f, and macro fixed section
The total angle θ3 of 20g is the angle θ of the telephoto end fixed section 21c.
Same as 3. Specific zooming of this embodiment
The range is 35mm to 70mm. The zooming cam groove 20 and the zooming
The guide rod 12 is movably fitted in the gucam groove 21.
Roller 17 of front group frame 16 and roller 1 of rear group frame 18
9 fits. The front group frame 16 is fixed via a fixing screw 22a.
The decorative frame 22 is fixed, and the shutter block 23 is further fixed.
Is defined. Front lens frame holding front lens L1
24 is the shutter block 23 and the helicoid 25
Therefore, it is screwed, and the lens of the shutter block 23
And has an arm 24a that engages with the feed lever 23a.
Therefore, the lens extension lever 23a rotates in the circumferential direction.
When the front group lens frame 24 rotates with this, the front group
The lens frame 24 moves in the optical axis direction according to the helicoid 25
I do. The rear group lens L2 is directly fixed to the rear group frame 18,
I have. The shutter block 23 itself is a well-known one.
is there. The built-in pulse motor allows the
Lens extension lever 2 by an angle corresponding to the ranging signal from the camera
3a, and further closes the shutter (section
After opening 23b for a predetermined time and closing it again,
The feeding lever 23a is returned to the original position. like this
The shutter block 23 is disclosed in, for example, JP-A-60-225122,
It is widely known in JP-A-60-235125. Departure
Akira uses such a shutter block basically as it is.
To use. Next, referring to FIG. 8 to FIG.
The lock 30 will be described. This barrier block 30 has a cam
When the ring 14 is rotated in the range of the opening / closing section 20a,
Positioned in front of the front lens group L1 with the rotational power as the driving force
To open and close a pair of barriers 31 and 31. Ba
The rear 31, 31 is provided with a pin on the front end face of the barrier block 30.
At 32 it is pivoted. The pair of barriers 31, 31 are symmetrical.
A barrier plate portion 31a that is in contact with and protrudes on the optical axis;
The pin 32 extends to the opposite side of the barrier plate 31a.
It has a drive arm 31b and is implanted in this drive arm 31b.
The operating arm 34a of the opening / closing spring 34 is engaged with the pin 33.
You. The opening / closing spring 34 is made of, for example, a molded product of synthetic resin.
And a spring arm 34b forming a Y-shape with the working arm 34a.
And a drive arm 34c, and a pin
It is pivoted at 35. The spring arm 34b is on the inner wall of the decorative frame 22.
Abuts on the barrier plate portion 31a through the working arm 34a.
Provides an urging force in a direction to retract from the optical path. Driving arm
34c is an opening and closing that is movably fitted in the decoration frame 22 in the radial direction.
The flange 36a of the pin 36 is engaged with the
The head of the pin 36 is connected to the front fixing plate 13 by a pin 37.
It is engaged with the free end of the moving lever 38. The open / close pin 36 is in a state where no external force is applied.
Is determined by the spring force of the spring arm 34b of the opening / closing spring 34.
Direction, and at this time, the barrier plate portion 31a
Retreat from the light path. That is, the barrier is opened. Against this
And the opening / closing pin 36 moves in the radial direction through the interlocking lever 38.
Pushes the drive arm 34c, resulting in the working arm
The barrier 31 is rotated via the base plate 34a, and the barrier plate 3
1a is positioned on the optical path. That is, the front lens L1
Close the front. And the interlocking lever 38 is a cam ring
The cam projection is formed on the inner surface of the
When the ring 14 rotates in the section opening / closing section 20a,
Pressed. Therefore, the cam ring 1 is driven by the zoom motor 5.
4 is turned to one end, the barrier is automatically closed.
It will be cool. Next, distance measurement according to FIGS.
The device (AF device) will be described. Has light emitting unit 3 and light receiving unit 4
Various types of distance measuring devices are conventionally known.
In the embodiment, the position detecting element (for example, P
SD) based on the principle of triangulation.
ing. FIG. 11 is a conceptual diagram of the light emitting device.
Light source 3a and a light projecting lens 3b.
A PSD 4a separated from the source 3a by a base line length L,
Lens 4b. CCD is composed of many light receiving elements.
In contrast, PSD 4a has an elongated shape as is well known.
A single common terminal (cathode) C
Terminals with different polarities from the common terminal C (anode)
I have A and B. This distance measuring device causes the light source 3a to emit light and
The reflected light reflected by the object enters the PSD 4a.
And the distance of the subject O, the position of the light hitting the light receiving surface
Unlike the terminals A and B, the photoelectric
Flow occurs. Therefore, by measuring this photocurrent,
You know the body distance. The above is the triangulation measurement using PSD4a.
Distance principle. Based on the distance measurement data, the shutter
By providing an operation signal to the unit 23,
Automatic focusing over the entire range
Can be That is, the pallet of the shutter unit 23
When a driving pulse based on the distance measurement data is given to the motor,
The lens extension lever 23a is moved by an angle corresponding to the pulse.
Then, the front lens group 24 is rotated. But
The helicoid 25 makes the front lens frame 24 (front group lens
Lens L1) is moved in the optical axis direction so as to be at the in-focus position.
You. The present invention uses an AF device based on other ranging principles.
You can also. The accuracy of distance measurement based on the principle of triangulation is in principle.
To the distance between the light emitting unit 3 and the light receiving unit 4, that is, the base line length L.
The distance between them should be as large as possible.
No. In the present invention, this base line length is increased and
In addition, between the light emitting unit 3 and the light receiving unit 4 resulting from the enlargement,
A zoom motor 5 is provided. Of this zoom motor 5
The position can be increased by increasing the baseline length of the
This is effective in reducing the size of the entire camera. Zoom motor 5
Is fixed to the motor support plate 6c formed integrally with the base plate 6 by bending.
And the pinion 7 is fixed to the drive shaft 5a.
You. As described above, the lens shutter of the present invention
The camera has a cam ring 14 with a front lens L1.
Zooming to move (extend) further from the far end
A cam groove 20f is provided. When you shoot this macro
And the distance measuring device using the light emitting unit 3 and the light receiving unit 4 is not changed.
When operated, the PSD 4a will be
Reflected light does not enter. In other words, can you measure the distance?
Drive signal (ranging data) to the shutter block 23
Can not give. The present invention is used during macro photography.
A new structure to correctly detect the subject position.
It is equipped with With reference to FIGS.
The distance measuring device at the time of shooting b will be described. On the front of the light receiving unit 4 of the distance measuring device, a macro image is taken.
The prism 4c having two total reflection surfaces and the mass
The short-distance correction optical element 4e composed of the step 4d advances. Step
Rhythm 4c has the effect of optically extending the base line length of the distance measuring device
It has the effect of refracting light rays. Mask 4d
Is for blocking light other than the required light path,
And an opening 4g on the light receiving lens 4b side.
You. The opening 4f is provided for projecting light with respect to the optical axis of the light receiving lens 4b.
The lens 3b away from the optical axis by a distance s.
It is opened in a lit shape, and the opening 4g is a light receiving lens 4b.
Are opened in a slit shape corresponding to the optical axis position. According to this configuration, at the time of close-up photography, FIG.
As shown in the figure, the effect of the prism 4c causes
The optical axis of the light receiving lens 4b is shifted by s in the direction of the base length L.
And at a finite distance, the light receiving lens 4b
Can intersect with the optical axis of the projection lens 3b.
You. Short distance correction in this type of conventional distance measuring device
The distance measurement light to the front of the distance measurement optical system
Techniques for placing prisms that have only an effect are known.
You. However, in this prior art, the subject
Deviation of spot image on PSD4a with changes in body distance
Insufficient amount makes accurate focus correction impossible
there were. On the other hand, as described above,
In the direction of the base line length L,
According to this short distance correction device, the base line length is set to L + s,
The shift amount of the spot image on PSD4a with respect to the object distance
The angle δ1 of the prism 4c and the refractive index
The correct subject distance can be detected by setting
Can be issued. Therefore, based on this distance measurement data
When the shutter block 23 is driven, macro shooting is performed.
Even so, you can get a picture with the correct focus. This short distance correcting optical element 4e is not shown in FIG.
As shown in FIG. 4, the shaft 41 located below the light receiving section 4
Is fixed to one end of an arm 42 pivotally attached to the base plate 6.
At the other end of the arm 42, an interlocking projection 43 is provided.
Provided on the body. This arm 42 does not receive any external force.
When the external force is applied, elasticity is maintained.
It has the flexibility to be deformed. Short distance correction optics
The element 4e is normally connected to the light receiving section 4 by a tension spring 46.
It is rotationally biased in a direction to retract from the front. And mosquito
The mulling 14 says that it has turned to the macro shooting position.
The short distance correcting optical element 4e is engaged with the interlocking projection 43.
Is provided on the front surface of the light receiving section 4.
ing. The protruding protrusion 44 is provided between the optical element 4 e and the light receiving section 4.
The position and shape are determined so that the
But the projection 44 of the short distance correction optical element 4e
The side of the gear support plate 6e integral with the base plate 6 is
The overcharge by the advance projection 44 is regulated.
Is absorbed by the flexibility of the memory 42. According to the above structure, the cam ring 14 is
When the camera is rotated to the black shooting position, the short-range correction light is automatically
The element 4e can be positioned in front of the light receiving section 4.
You. Note that a system from a distance measuring apparatus having a light emitting unit 3 and a light receiving unit 4
The drive signal to the shutter block 23 is
This is performed via a shibble printed circuit board (FPC board). This
Of the front group lens L1 and
Extended with a margin in the entire movement range of the rear lens group L2
Inside the cam ring 14 so that it can be folded
It is folded. Next, returning to FIG.
Step 2 will be described. The finder block 2 has a fine
A flash device 9 and a strobe device 9 are included. This finder
Both the device 8 and the flash device 9 focus on the lens barrel block 1.
The finder field of view is changed according to the change of the point distance.
That change the illumination angle (light intensity) of the strobe
It is. The power source for this is the zoom motor 5 described above.
Can be. The gear 15 of the cam ring 14 has the pinion
A pinion 50 different from pin 7 is engaged with this pinion.
The shaft 51 of the ON 50 is extended behind the base plate 6, and thereafter
At the end, a reduction gear train 52 is provided. Reduction gear train 52
Of the final gear 52a engages with the rack 53a of the cam plate 53.
Matching. The cam plate 53 is slidable in the left-right direction.
A rack 53a is provided at the front end (lower end) of the lower bent portion 53b at the rear end.
Are provided integrally. The reduction gear train 52 includes a gear 15
Of the cam ring 14
This is given to the plate 53. The cam plate 53 has a fine
Variable magnification cam groove 55 for damper device 8 and parallax correction cam
Groove 56 and strobe cam groove 57 for strobe device 9
Is provided. The lens system of the finder device 8 is basically
Are the fixed object side lens unit L3 and the eyepiece lens unit L
4 and a movable variable power lens unit L5.
A deflection prism P1 for macro photography is provided. Variable magnification
The lens unit L5 is a photographed image obtained by changing the magnification of the lens barrel block 1.
Surface and the field of view of the finder device 8
Yes, the deflection prism P1 advances on the optical axis only during macro shooting.
Out to correct parallax in particular. That is, the lens lens
Parallax is inevitable with shutter-type cameras,
Although the amount is larger for close-up shooting, the camera of the present invention
Shooting is possible, and the amount of parallax is large at this time.
Therefore, only during macro shooting, the lower part is thicker and the upper part
Is inserted into the optical path, and the optical path is
Can be bent downward to observe the part closer to the shooting part
Like that. FIG. 22 shows that the deflection prism P1 is inserted.
1 shows an outline of an optical path of the first embodiment. Further, the strobe device 9 is provided with a focus of the photographing lens.
When the distance is long focus, that is, when the lens is extended, the irradiation angle
At the same time, during macro photography,
This is to reduce the amount of light to the object. This implementation
In the example, the Fresnel lens L6 is fixed and the xenon lamp 5
8 is moved in the optical axis direction.
I have. Then, the finder device 8 and the strobe
FIG. 15 shows an example of a specific structure for giving the above movement to the device 9.
24 will be described. F that is fixed to the base plate 6
A finder master plate 60 is fixed on the finder block 54.
And the cam plate 53 is moved straight
A guide pin 62 that fits in the guide groove 61 is fixed.
You. The cam plate 53 is provided with the linear guide groove 61 and the guide.
A pin 62 and a flap for suppressing the floating in front of the cam plate 53.
A holding guide formed as a piece raised and cut on the binder master plate 60
60a regulates the sliding direction to the left and right.
(FIGS. 15 and 16). The finder master plate 60 has a variable magnification in the front-rear direction.
The lens guide groove 63, the deflection prism guide groove 64, and
And the strobe guide groove 65 is not
In the id groove 63, a variable power lens supporting the variable power lens unit L5 is provided.
The guide projection 66a of the angle frame 66 is fitted,
The guide groove of the deflection prism operating plate 67 is provided in the guide groove 64.
67a is fitted into the strobe guide groove 65.
The guide projection 68a of the flash case 68 to which the
Fit together to regulate the direction of movement of these elements back and forth.
ing. And on the guide projections 66a, 67a, 68a
Are driven pins 69, 70, 71, respectively.
These driven pins are respectively connected to the variable magnification cam grooves 5.
5. Parallax correction cam groove 56 and strobe cam
It fits in the groove 57. Therefore, the cam plate 53 moves left and right.
When it moves, the variable power lens frame 66, the deflection prism operating plate 6
7. The strobe case 68 has the cam grooves 55, 5
Move back and forth according to the shapes of 6, 57
It will be. Variable magnification cam groove 55, parallax correction cam groove
56, each section of the strobe cam groove 57 is
The zooming cam grooves 20 and 21 of the mulling 14 are explained.
It corresponds to each section described. That is, the variable power cam groove 55 is
Wide-angle end fixed section 55a, zooming section 55b, and telephoto end
It has a fixed section groove 55c, and the angle of each of these sections
.theta.1, .theta.2, and .theta.3 correspond to FIG. In contrast
The parallax correction cam groove 56 has a non-projecting section 56a,
Outgoing motion section (macro feeding section) Projecting motion section 56b,
It has an output position fixed section (macro end fixed section) 56c.
The strobe cam groove 57 has a wide-angle end fixed section 57a and a variable magnification section.
Interval 57b, telephoto end fixed section 57c, macro feed section 57
d and a macro end fixed section 57e. these
Each of the cam grooves 55, 56, 57 and the zooming cam groove 2
FIG. 25 shows the relationship between 0 and 21. A variable power lens frame supporting the variable power lens unit L5
Reference numeral 66 denotes a finder block 54 as shown in FIG.
Is supported movably in a suspended manner on the guide surface 54a of the
You. This moves according to the variable power cam groove 55.
And the subject side lens unit L3, the eyepiece lens unit L4,
Magnification of viewfinder optical system including double lens group L5 changes
And the shooting range of the lens barrel block 1 and the viewfinder field of view.
And almost match. Such an optical system has a simple lens setting.
It can be obtained by meter technology. Next, mainly referring to FIG. 20 to FIG.
The prism operation plate 67 will be described. First made of synthetic resin
The deflecting prism P1 has fulcrum pins 7 at the lower ends on both sides thereof.
4 is rotatably supported by the finder block 54.
You. A torsion spring 75 for urging the fulcrum pin 74
One end of the torsion spring 75 is
Hook on the position control piece 76 fixed to the side of the rhythm P1
The deflection prism P1 is always set to the subject side lens group L.
Energize so as to be located in the optical path of the third to variable magnification lens unit L5
doing. The position restricting piece 76 is located in the finder block 54.
Are located in the arc-shaped escape groove 79 formed in the groove. Also
The deflection prism operating plate 67 is connected to the finder block 54.
It is sandwiched between the guide plate 80 fixed to this,
The guide pin 81 implanted on the side
In the straight guide groove 82 formed in the groove 54. The position regulating piece 76 is a deflection angle operation plate 67.
Can be engaged with the rotation prevention surface 77 and the rotation surface 78.
The deflected prism operating plate 67 has a driven pin 70
When in the non-projecting section 56 a of the cam correction cam groove 56,
The rotation preventing surface 77 is brought into contact with the position regulating piece 76 to
The deflection prism P1 is moved in the optical path against the force of the spring 75.
But the driven pin 70 moves out of the projecting movement section 56b.
Is reached, the rotating surface 78 is made to correspond to the position regulating piece 76.
Then, due to the force of the torsion spring 75, the deflection prism
P1 rotates in the optical path, and the position regulating piece 76
8 and gradually in the optical path as shown in FIGS.
And bend the viewfinder optical path as shown in the figure.
The subject comes into view. In other words, macro photography
Reduce parallax during shadows. FIG. 24 shows a side view of the strobe case 68.
As shown in FIG.
A guide block 85 that fits into the guide groove 84 is provided.
You. Also, a flash case is provided above and below the flash case 68.
The height adjustment pin 86 (FIGS. 17 and 2)
3) is fixed. Therefore this strobe case
68 is a strobe cam groove 57 when the cam plate 53 moves left and right.
Back and forth according to the shape of Variable magnification section of strobe cam groove 57
The space 57b is a xenon lamp for the Fresnel lens L6.
This is the section where 58 is retracted.
The range of the irradiation angle emitted from the lens L6 is narrowed, and the focal length
Of increasing the guide number as the number of tracks increases
do. On the other hand, in the macro feeding section 57d, the irradiation angle
The guide number in macro photography
To be smaller. The above is the lens shutter type camera of the present invention.
First, the control system will be described.
You. In this camera, the zoom
Change in focal length of the lens
Changes in the open F-number, the lens is at the wide-angle (wide) end
At the telephoto end, in the stowed position
Information such as being in the macro shooting position
, Thereby performing various controls.
To detect this lens position, the cam of the lens barrel block 1
As shown conceptually in FIG.
The plate 90 is fixed, and the fixing frame 9 outside the cam ring 14 is fixed.
1, the base end of the brush 92 that comes into sliding contact with the code plate 90 is
Fixed. FIG. 25 is a development view of the code plate 90.
The zooming cam groove 2 of the cam ring 14 is
0, 21 and each cam groove 55, 56, 5 of the cam plate 53.
7 cam profiles are also drawn. Brush 9
2 is a common terminal C and terminals denoted by reference numerals 0, 1, 2, and 3.
T0, T1, T2, and T3, and these terminals T0 to T3
Contacting the conductive land 93 of the base plate 90
The signal of “φ” and “1” is taken out when there is no contact.
The combination of these binary codes "1" and "φ"
The rotation position of the cam ring 14 is detected. 94 is conduction
These are dummy terminals provided between the lands 93.Note that FIG.
At 5, the angle θ2 changes the focal length of the lens continuously.
Lens section of the cam groove 20 for the front group.
The delivery section 20b (see FIG. 7) stores the lens from the zoom section.
It corresponds to the transition section (area) to the position, and the barrier opening / closing section 20
a corresponds to the lens storage position.
The rear opens and closes, but the lens remains in the stowed position.
You. ) The above four bits T0, T1, T2, and T3
Information is the zoom code data of the zoom code encoder
It is given as ZP0, ZP1, ZP2, ZP3. Figure
Reference numeral 26 denotes “1” and “φ” of these zoom code data.
In this example, the rotation of the cam ring 14 is shown.
Set the position (POS) from “φ” to “9” and “A”,
1 of "B", "C" (hexadecimal number)
Detection is performed in three stages. "0" is the lock
(LOCK) position, “C” is the macro (MACRO) position,
There are different focal length positions fo to f7 'between them. This rotation position
(POS) is also drawn below the code plate in FIG. On the other hand, the rotation of the cam ring 14 is controlled in a mode.
The changeover switch 101 and the zoom switch 102
It is done. FIGS. 27 to 29 show these two switches.
Specific arrangement examples of the camera 101 and 102 with respect to the camera body
Show. 99 is a release button.
Turn ON switch 103 (Fig. 32) and release it by pushing it two steps.
The switch 123 (same) is turned ON. The mode changeover switch 101 is locked (LOC
K), ZOOM, and MACRO
This is a transfer switch that can take
As shown in FIGS. 29 to 31, the macro button 101a
When the switch is not pressed, the switch lever 101b isLOCKposition
And the ZOOM position.
a with the switch lever 101b
When the user slides on the tongue 101a, the position becomes the MACRO position.
And you can't release it in the LOCK position.
Does not work. Release and zoom
And can be released in the MACRO position.
There is no zoom operation.In other words, the mode switching
The switch 101 is connected to the LOCK position of the switch lever 101b.
In the movement section between the ZOOM position and the main switch of the camera
Is configured.The zoom switch 102 is released
To the neutral (OFF) position and apply operating forces in different directions.
By switching between wide-angle (WIDE) and telephoto (TELE),
By switching this switch, the zoom motor 5 rotates in the forward and reverse directions.
I do. The mode changeover switch 101 and the
The camera switch 102 basically operates the camera of the present invention as follows.
To work. 1. When the mode switch 101 is in the LOCK position The zoom motor 5 rotates in the reverse direction, and the code plate 90 and the brush 92
Position of the cam ring 14 detected by the
POS) becomes “φ” (Fig. 25, Fig. 26, same hereafter).
Then, the zoom motor 5 stops. 2. When the mode switch 101 is in the MACRO position
Come The zoom motor 5 rotates forward, and when the POS becomes “C”, the zoom
The arm motor 5 stops. 3. When the mode switch 101 is in the ZOOM position When the zoom switch 102 is set to WIDE, the zoom motor 5 is reversed.
Turn, and turn forward at the time of TELE. And in the case of TELE, POS
When "A" is reached, the zoom motor 5 stops. WIDE
Indicates that the zoom motor 5 is turned on for a short time after the POS becomes “1”.
Continues reverse rotation, then stops when POS becomes “2” after normal rotation
I do. During the rotation of the zoom motor 5, the zoom switch
When the switch 102 is turned off (position in the neutral position),
When the arm motor 5 is in the TELE direction (forward rotation), it stops immediately,
In WIDE direction (reverse rotation)
Stop. This short-time forward rotation is caused by the lens barrel block 1 and the
Backlash of mechanical system in Finder block 2
When stopped in the WIDE direction, and stopped in the TELE direction
This is to eliminate a change in the stop position when the stop is performed. The entire control system of the camera of the present invention including the above control is
32 to 37 will be described in more detail. Ma
In FIG. 32, the zoom motor control unit
(Hereinafter referred to as ZM / C) 100 is, for example, one chip my.
Computer and its internal program memo
The ROM (ROM) stores programs to be described later.
You. This ZM / C 100 has the mode
Switch 101, zoom switch 102, photometric switch
Switch 103, a zoom encoder (in FIG.
Each switch data from 104) is input.
And the main control unit described later
(Hereinafter referred to as MC / U) 109
Disable signal DIS, clock C for serial data transfer
LK and switch check / operation end data described later
The serial signal SI carrying the data is input. Also this Z
From the M / C 100, a zoom for controlling the zoom motor 5 is provided.
Output rotation control command RCM to motor drive circuit 107
And the MC / U 109 is turned on and off.
Word hold signal PH and zoom encoder 104
Syria with these zoom code data ZP0 to ZP3
Signal SO is output. The mode switch 101 is connected to the lock
LOCK, ZOOM, and MACRO
Two signals of LOCK and MACRO in the following table 1 according to the condition
make. [0042] [Table 1] The zoom switch 102 is connected to the WI as described above.
Third in DE Momentary, OFF and TELE Momentary
Place. The photometry switch 103 is provided with the release button 9
Activated by 9-step pressing (Activation signal SWS) and distance measurement
Device 121 (the above-described device provided with light emitting unit 3 and light receiving unit 4)
And the photometric device (A / E) 120 is operated. Zoom Enco
The encoder 104 adjusts the rotational position of the cam ring 14 as described above.
ZP0 to ZP3 zooming by the dovetail plate 90 and the brush 92
Is detected as a code, converted to the value POS, and Z
Give to M / C100. A switch that operates through the terminal SSC
Switch scan control processing is performed for each of the above switches.
Only when checking the input, apply the voltage "H"
At other times, it is set to “L” to reduce current consumption. The regulator 105 is connected to the battery 106
To supply the required drive voltage to ZM / C100
You. The zoom motor drive circuit 107 is, for example,
For example, the circuit is configured as shown in FIG.
These 4-bit rotation control commands RCM (FOWN, FOWP, REV
N, REVP), as shown in Tables 2 and 3.
The rotation and stop of the motor 5 are controlled. [0047] [Table 2] [0048] [Table 3] The MC / U 109 is also a one-chip microphone, for example.
Computer and its internal program memory
(ROM) by executing the program
Performs the following functions: (1) Hoist motor 111 via hoist drive circuit 110
Function to control the rotation of (2) The shutter block 2 described above via the driver 112
Function to drive 3 (3) Control various displays 115 via the driver 114
Function (4) Strobe unit via interface 116
117 (strobe circuit including xenon arc tube 58)
Functions to control (5) To ZM / C100 via interface 118
Function to output zoom motor operation inhibition signal DIS (6) For serial transfer via interface 118
Function to output clock CLK (7) Switch described later via interface 118
The serial signal SI with the check / operation end data
Output function (8) Function for continuing operation of regulator 124 The MC / U 109 performs the above functions.
To rewind the film or switch on the back cover.
The switch data from the upper motor control switch 119,
Photometric data from the optical device 121,
Distance detection data, film sensitivity setting or automatic reading device
(ISO) film speed data from 122, and release
Switch data SWR from the
Is forced. The regulator 124 is controlled by the MC / U10
9 and the interface 11
8 whether or not there is a power hold signal PH input through
Therefore, start / stop is performed, and
Also activated by switch data from switch 119
During operation, the main control excluding the zoom control system
Supply the required power to each part of the system. Next, Z shown in each of FIGS.
Flow of program stored in ROM in M / C 100
The operation of ZM / C100 will be described with reference to the drawings.
I do. Referring first to FIG. 34, C of ZM / C100
The PU has a battery 106 housed in a battery case.
When power is supplied from the regulator 105, the initial setting is performed in S1.
Perform initialization (initialization) processing. Next, in step S2, the switch scan command
Control mode, and the mode change switch 10
1, zoom switch 102, photometric switch 103 and
The state of each switch of the zoom encoder 104 is input
Thereafter, based on the input data, in S3 the photometric switch 10
Check if 3 is off. And photometric
If the switch 103 is on, the process of S2 and S3
And wait until the photometry switch 103 is turned off.
If the photometry switch 103 is off, the process proceeds to S4.
Advance the process. In S4, the zoom mode from MC / U109 is set.
When the data operation inhibition signal DIS is turned on (for example, "1")
Check if it is on, and if it is on, go to S5
(For example, “φ”), the process proceeds to S8. The zoom motor operation inhibition signal DIS is
In order to reduce the power consumption of the battery 106,
That the motor 111 and the zoom motor 5 rotate simultaneously.
This is prohibited, and the MC / U 109 sets the
Motor 1 operated by the motor control switch 119
MC / U109 zoom mode only when
The data operation inhibition signal DIS is turned on. When the zoom motor operation inhibition signal DIS is
The power hold signal PH described above in S5.
Is turned on (for example, “1”). In this S5,
The meaning of outputting the word hold signal PH is as follows: MC / U10
9 is operated by the hoist motor control switch 119 and
When the upper motor 111 is rotated, it is performed unconditionally.
Rather than letting this powerhousing from the ZM / C100
The license signal PH to allow
The zoom motor 5 and the
Do not rotate the hoist motor 111 at the same time
You. Then, in the next S6, from the MC / U 109
Is off, that is, M
The rotation control of the hoist motor 111 by the C / U 109 ends.
Wait until the zoom motor operation prohibition signal DIS turns off.
Then, the power hold signal PH is turned off in S7 (example)
For example, “0”) and turn off the regulator 124
The process returns to S2. The regulator 124 is turned off
Even if all power supply is not stopped, for example, display
It is assumed that power supply to the unit 115 is continued. When the zoom motor operation inhibition signal DIS is
At the time of switching, each switch is executed in S8 by the same processing as S2.
The state of the zoom encoder 10 is input in the next S9.
The zoom code ZP0 to ZP3 from the POS (see FIG.
25, see Figure 26) POS conversion
I do. After the POS conversion, the input is made in S8 in S10.
The mode changeover switch 101
The switching position (mode) is “LOCK” or “ZOOM”
Or “MACRO”, and if “LOCK”, S11
If "ZOOM", go to S14, if "MACRO", go to S16
The processing proceeds in each case. And in the case of "LOCK", S11
In step S9, the result of the POS conversion is POS = φ, ie,
Check LOCK position or not, if POS = φ, S2
If POS φ, go to S12 and zoom
Rotation of the motor 5 (see the rotation control command RCM in Table 3)
And a mode subroutine described later in S13.
Is performed, and the process returns to S2. In the case of "ZOOM", first in S14,
Whether the result of POS conversion in S9 satisfies POS ≦ 1
Check whether or not, if POS ≤ 1, proceed to S17
Rotate the zoom motor 5 forward (see the rotation control command RCM in Table 2).
And a mode control described later in S13.
After executing the routine, the process returns to S2. If POS ≧ 2, in S15, in S9
Check whether the result of POS conversion satisfies POS ≧ B
Check, if POS ≧ B, reverse the zoom motor 5 in S12
Mode sub blue, which will be described later in S13.
After executing the chin, the process returns to S2. If POS ≤ A, 2 ≤ PO
Since S ≦ A, the process proceeds to S18. "MACRO
 ”, The result of POS conversion in S9 in S16
Check whether POS = C, that is, MACRO position
If POS = C, jump to S22; if POS ≠ C, go to S17
While rotating the zoom motor 5 forward, in S13
After executing the subroutine to be called, the process returns to S2. Next, in S18, the data input in S8
The zoom switch 102 switches to the TELE side
Check whether it is on (TELE ON), and if TELE is ON, S
Called and executed the TELE subroutine described later at 19.
Thereafter, the process returns to S2, and if TELE is off, the process proceeds to S20.
In S20, based on the data input in S8, the zoom
Switch 102 is set to WIDE (WIDE
Check if it is or not, and if WIDE is on, see S21 below.
After executing the WIDE subroutine to execute, return to S2
If WIDE is off, the process proceeds to S22. And S22
Then, based on the data input in S8, the photometric switch
Check if 103 is on and if it is not on
If it is ON, the process returns to S4, and if it is ON, the process proceeds to S23.
You. Each process up to S22 is a process according to the gist of the present invention.
In the following, before the description of each process after S23,
Mode subroutine, TELE subroutine of S19, and
Including the explanation of the WIDE subroutine of S21 and S21,
The operation of the camera will be described. First, the flow of the mode subroutine of FIG.
Referring to the figure, call this mode subroutine
The CPU of the ZM / C100 determines that the wide-angle
Flag (The wide end means POS = 2 in FIGS. 25 and 26;
That is, Fwide is reset to “φ”, and the next S131, S
At 132, the same processing as at S8 and S9 in FIG. 34 is performed. Next, in S133, the data entered in S131 is input.
Switch off by mode switch 101 based on data
Whether the replacement position (mode) is "LOCK" or "ZOOM"
Determine whether it is "MACRO", and if "LOCK", go to S134.
If "MACRO", go to S138, if "ZOOM", go to S142,
The process proceeds respectively. First, in the case of "LOCK", the process proceeds to S134.
The result of POS conversion is POS = φ, that is, the LOCK position.
Check if POS = φ, zoom in S135
Motor motor 5 is stopped (in this case, the motor is in the reverse rotation state.
3) (see the rotation control command RCM of FIG. 3),
Return to If POS ≠ φ, zoom in S136
Check if data 5 is reversed, and if it is,
Return immediately to S131, and if not reversed, to S137
After the zoom motor 5 is rotated in reverse, the process returns to S131.that's all
Mode conversion switch (main switch) 10
POS = φ is still confirmed while 1 is operated to the LOCK position.
POS (if not in the storage position)
= Continue to rotate the zoom motor 5 until φ is confirmed.
Brakes and stops as soon as it is approved. In other words, the lens
In the transition area from the zoom section to the storage position,
Power off is prohibited, and only when the storage position is reached
A stop command is issued to the data. Next, in the case of "MACRO", in S138
The result of the POS conversion in S132 is POS = C, that is,
Check if it is in MACRO position or not, if POS = C, S1
At 39, the zoom motor 5 is stopped (in this case, the normal rotation state).
After the rotation control command RCM in Table 2)
It returns to S2 of FIG. If POS ≠ C, go to S140
To check whether the zoom motor 5 is rotating forward,
If it is, return to S131 immediately, if it is not normal rotation
After reversing the zoom motor 5 in S141, the process proceeds to S131.
Return. In the case of "ZOOM", in S142, S
Whether the result of POS conversion at 132 is POS ≧ A, POS ≦
Check if 1 or 2 ≤ POS ≤ 9, POS ≤ 1
To S143, if 2 ≦ POS ≦ 9, to S153, POS ≧ A
If so, the process proceeds to S157. If POS ≤ 1
In S143, it is determined whether the zoom motor 5 is rotating forward.
When it is normal rotation, it jumps to S146 and reverses
If so, the process proceeds to S144. In S144
Is processed for a predetermined time tmsec for the reason described later.
Is performed, and after tmsec elapses, S145 is performed.
To reverse the zoom motor 5 from the reverse rotation to the normal rotation. Next, in S146 and S147, FIG.
The same processing as in S8 and S9 is performed.
In S149, based on the data input in S146,
Switch position (mode) by the mode switch 101.
Do). Switch from "ZOOM" to "LOCK" or "MACRO"
Check if it was received and switched to "LOCK"
If yes, return to S134 and switch to "MACRO".
If so, return to S138. If "ZOOM" remains, return to S150.
Proceed with the process. In S150, the POS change in S147
Check whether the converted result is POS = 2, and if POS ≠ 2,
Returning to S146, if POS = 2, the process proceeds to S151.
In S151, POS = 2, that is, the wide end
Then, set the wide end flag Fwide to “1”, and
After the zoom motor 5 is stopped in S152, the process proceeds to S152 in FIG.
Return to 2. In the check of S142, 2 ≦ POS ≦ 9
If the zoom mode is checked, the zoom mode is
Check if the data 5 is rotating forward and it is rotating forward
Sometimes jumped to S156 to stop zoom motor 5
Thereafter, the process returns to S2 of FIG. The zoom motor 5
Is reversed, the process proceeds to S154, and
After the arm motor 5 is rotated forward, the following S155 will be described later.
Waiting for processing not to proceed for a predetermined time tmsec for a reason
Machine processing. Then, after lapse of tmsec, the aforementioned S15
After stopping the zoom motor 5 shown in FIG.
To S2. In the check of S142, it is determined that POS ≧ A.
If the zoom motor 5 is clicked, the zoom motor 5 rotates in reverse in S157.
Check whether or not it has
Jump to 59, and when the camera is rotating forward, zoom
After the data 5 is reversed, the process proceeds to S159. In steps S159 and S160, FIG.
The same processing as in S8 and S9 is performed, and then S161 and S
In 162, the same processing as in S148 and S149 described above is performed.
Do. Then, the mode switch 101 is turned off.
If the replacement position (mode) remains “ZOOM”, the process proceeds to step S163.
Check if the zoom motor 5 is rotating in reverse
If the rotation is reversed, the process proceeds to S164,
If so, the process proceeds to S167. Processing of S164
In other words, the result of POS conversion in S160 is POS = 9
Check if POS ≠ 9, return to S159, POS =
If it is 9, S144 and S1 described above in S165 and S166.
After performing the same processing as in step S45, the process returns to step S159. S1
In the process of 67, the result of POS conversion in S160
Is POS = A, that is, whether or not the tele end (f7 'in FIG. 26)
Check, if POS ≠ A, return to S159, POS = A
After stopping the zoom motor 5 in S168 in FIG.
It returns to S2 of the figure. Next, a flowchart of the TELE subroutine of FIG. 36 is shown.
And calling this TELE subroutine, Z
The CPU of the M / C 100 determines in S190 that the
The reset flag Fwide is reset to “φ”. Next, in S191, the POS change of S9 in FIG.
Check whether the conversion result is POS = A, and if POS = A, see FIG.
Immediately return to S2 of POS ≠ A, ie where
If 2 ≦ POS ≦ 9, the process proceeds to S192, and the zoom mode
Data 5 is rotated forward. And in S193, S194
After performing the same processing as S8 and S9 of S34, S195
In step S194, the result of the POS conversion is POS = A,
Is checked, and if POS = A, S197
34, the zoom motor 5 is stopped, and
Return to 2. If it is POS ≠ A, S196
The zoom switch based on the data entered in S193.
Switch 102 is still switched to TELE side (TELE ON)
Check if it is not, return to S193 if TELE is on, and
In step S197, the zoom motor 5 is stopped.
After that, the process returns to S2 in FIG. Next, a flowchart of the WIDE subroutine of FIG.
And call this WIDE subroutine, Z
First, the CPU of the M / C 100 executes the above-described processing in S210.
The end flag Fwide is Fwide = 1, that is, the wide end has already been set.
To check if the zoom motor 5 is stopped,
If Fwide = 1, the process immediately returns to S2 in FIG.
If ≠ 1, the process proceeds to S211. In S211 zoo
A process for rotating the motor 5 in the reverse direction is performed.
Processing does not proceed for a predetermined time tmsec for reasons
Execute standby processing. Then, after lapse of tmsec, 213, S
At 214, processing similar to that at S8 and S9 in FIG. 34 was performed.
Then, in S215, the POS conversion result of S214 is
= 1 or not. If POS = 1, go to S216.
 If POS ≠ 1, the process proceeds to S223. S2
In steps S16 and S217, steps S144 and S1 in FIG.
The same processing as in step S45 is performed, and S218 and S219 are further performed.
Then, the same processing as S8 and S9 in FIG. 34 described above is performed.
U. Then, in S220, the POS conversion result of S219 is P
Check if OS = 2, if POS ≠ 2 return to S218
If POS = 2, the wide-end flash at S221 and S222.
Process to set Fwide to “1” and zoom mode
After performing the process of stopping the data 5, the process returns to S2 of FIG.
Turn. Check POS ≠ 1 in S215
If so, the process proceeds to S223, and the zoom switch
Whether or not 102 is still switched to WIDE side (WIDE on)
Check if it is WIDE on, return to S213,
If yes, the process proceeds to S224. And S224, S2
25 and S226, S154 and S1 of FIG.
55, the same processing as in S156 is performed, and thereafter,
It returns to S2. Next, S1 to S22 in FIG. 34 and FIG.
The operation of each processing in FIG.
explain. (1) Insert the battery 106 into the battery case
The motor is controlled and the hoist motor control switch 119 is
Operate the release button 99 and zoom switch 102 at all
If not (A) The mode switch 101 is in the LOCK position
34, the ZM / C100 CPU
After performing the initial setting process of S1, the front group lens L1
Rotation of the cam ring 14 that governs the movement of the rear lens group L2
Provided that the position is POS = φ, S2 to S
4, each processing in the first loop of S8 to S11 and S2
No camera operation is performed simply by repeating the above. Note that
At this time, the release button 99 is pressed halfway
When the switch 103 is turned on, the S
Steps S2 and S3 are repeatedly executed, and the release button 9
Operation 9 is ignored. The rotation position of the cam ring 14 is P
In the case of OS ズ φ, zooming is performed by the processing of S12 in FIG.
Motor 5 is reversed in the direction where POS = φ
In FIG. 35, S131 to S134, S136, S131
By the repetition of the processing of S135 and the processing of S135, the cam
Zoom so that the rotation position of the ring 14 stops at POS = φ
When the rotation of the motor motor 5 is controlled and POS = φ,
Return to the first loop. (B) Set the mode switch 101 to the LOCK position
Is switched to the ZOOM position from the ZM / C100 CP
U exits the first loop and proceeds to S14. This
At this time, since POS = φ, zooming is performed by the processing of S17.
Motor 5 is rotated forward, and S130 to S130 in FIG.
After S133 and S142, S143, S146, S1
The process proceeds with step 47, and the mode is switched in steps S148 and S149.
Switch 101 switches to LOCK position or MACRO position
S150, S146-S14, provided that they are not
Wait for POS = 2 in the loop of 9 and POS = 2
Then, after S151, the zoom motor 5 is stopped in S152.
After that, the process returns to S2 in FIG. That is, in this case
The rotation stop position of the cam ring 14 is
It is the wide end (POS = 2) where the point distance is fo. ZM /
After returning to S2, the CPU of C100 returns to any camera operation.
S4, S8-S1 provided that no work is done
0, S14, S15, S18, S20, S22, S4
Each process is repeated in the second loop. (C) When the mode changeover switch 101 is
When the zooming 14 is stopped at the wide end,
Is switched to the MACRO position, the ZM / C100 CP
U exits from the above-described second loop from S10, and
Proceed to 16. At this time, since POS = 2, the processing in S17
Therefore, while the zoom motor 5 is rotated forward, FIG.
S131 to S133, S138, S140, S131
Cam ring by repeating processing and processing of S139
Zoom motor so that the rotation position of 14 stops at POS = C
5 is controlled, and when POS = C, the flow goes to S2 in FIG.
Returned, provided that no further camera operations are performed
The third of S4, S8 to S10, S16, S22, S4
Each process is repeated in a loop of. (D) Set the mode switch 101 to the MACRO position.
When switching from the position to the ZOOM position, the ZM / C100 C
The PU exits the third loop from S10 and returns to S
Proceed to 14. At this time, since POS = C, S14, S1
5, the zoom motor 5 is reversed by the process of S12.
35 and S131 to S133, S142 in FIG.
Through S157, S159, and S160
You. Then, in S161 and S162, the mode change switch
101 is not switched to LOCK position or MACRO position
S163, S164, S159-S16
First wait for POS = 9 in the loop of 3, then POS = 9
Then, after performing processing for waiting for tmsec in S165, S1
At 66, a process of rotating the zoom motor 5 from reverse rotation to normal rotation is performed.
Now. Here, the processing of S165 and S166 is performed.
The reason is as follows. Ie from the MACRO position
When switching to the ZOOM position, set the cam ring 14 to POS =
Stop immediately after entering POS = A from the 9th side.
Immediately after zooming from S = A to POS = 9
When the camera is reversed to normal rotation and stopped at POS = A, the zoom mode
The backlash of the gears of the drive transmission system in the
There is a possibility that the zoom motor 5 stops without
You. However, when POS = 9, the zoom mode
Time until it returns to POS = A by further reversing
If you save time and then rotate the zoom motor 5 forward,
Stop at POS = A with backlash removed on the side
Wear. Then, after the processing of S166, S159 to S16
3. Wait until POS = A in the loop of S167 and S159.
When POS = A, the zoom motor 5 is stopped in S168.
Then, the process returns to S2 of FIG. That is, in this case,
The rotation stop position of the cam ring 14 is the focal length shown in FIG.
The telephoto end (POS = A) where the separation is f7 '. In this case
Also, the CPU of the ZM / C100 operates in the
After returning to, no camera operation has been performed
Each condition is repeated in the above-described second loop under the condition Ma
By switching from the MACRO position to the ZOOM position, S142
When the process proceeds from step S157 to step S157,
1 to S133, S138, S140, S141, S13
The cam ring 14 corresponds to POS ≧ A during the loop 1
Mode switch 101 is in the ZOOM
It can also happen when switched to a different position. However, in this case
Reverses the zoom motor 5 that is normally rotating in the process of S158.
Inversion is performed. (E) When the mode switch 101 is
ZOOM position when the robot 14 is stopped at the telephoto end (POS = A)
When switching from to the MACRO position, the starting point is POS = 2
Except that POS = A.
You. (F) In the above description of (b) to (d)
35, S148, S149, S161 and S162.
Mode switch 101 from the ZOOM position to LO
Check that the position has been switched to the CK position or MACRO position
When the LOCK position is set,
Loop processing of S136, S137, S131 to S134
By the processing of S135 and S135, the cam ring 14 becomes POS = φ
And in the case of MACRO, from S138
S140, S141, S131 to S133, S138
The cam ring 1 is obtained by the loop processing of S139 and the processing of S139.
4 stops at POS = C. (G) S131 to S133, S13 in FIG.
8, during the loop processing of S140, S141 and S131,
And the cam ring 14 is in the position corresponding to 2 ≦ POS ≦ 9.
36 or S131 to S137, S131 in FIG.
And the cam ring 14 is in the condition of 2 ≦ POS ≦ 9
Mode switch 101 when in the position corresponding to
Is switched to the ZOOM position, the CPU of ZM / C100
Exits the loop from S133 and proceeds to S142.
Advance the process. And in this case 2 ≦ POS ≦ 9,
Proceeding to S153, when the zoom motor 5 is rotating forward
Flying from S153 to S156, the zoom motor 5
Is stopped, and when the zoom motor 5 is rotating in reverse, S
Proceeding to S154 from 143, the zoom motor 5 is first reversed.
After rotating from forward to reverse, remove backlash on the forward side
After waiting for the time tmsec for
The motor 5 is stopped. That is, 2 ≦ POS ≦ 9
Then, the rotation stop position of the cam ring 14 is shown in FIG.
It is an arbitrary position where the focal length is any of fo to f7. Note that
If the cam ring 14 is at the position corresponding to 2 ≦ POS ≦ 9
The mode switch 101 is in the ZOOM position
The operation of the zoom switch 102, which will be described later,
May depend on specifications. (H) S131 to S136, S13 in FIG.
In the loop processing of 1, the cam ring 14 corresponds to POS = 1
Mode switch 101 in LOCK position
Is switched to the ZOOM position, the ZM / C100 CPU
Is transferred from S133 to S142 and S144 to S144.
Advance the process. And in this S144 and the next S145
Performs the same processing as S165 and S166 described above.
U. That is, switching from such a LOCK position to a ZOOM position
In the meantime, the cam ring 14 enters POS = 2 from POS = 1 side
Is stopped immediately after, but immediately after POS = 2 to POS = 1
Reverse the zoom motor 5 from reverse rotation to forward rotation with POS = 2
When stopped, the teeth of the drive transmission system in the zoom motor 5
Zoom motor without removing backlash of cars etc.
5 may stop. But for tmsec zoom mode
When the POS = 2 is returned by further reversing data 5
By saving time and then rotating the zoom motor 5 forward.
Stop at POS = 2 with backlash on the normal rotation side removed.
Can be stopped. (2) The CPU of the ZM / C 100 is
Executing loop processing such as the first loop or the second loop
When the hoist motor control switch 119 is operated The CPU of the MC / U109 is a zoom motor
Since the operation inhibition signal DIS is turned on, the ZM / C100 C
The PU advances the process from S4 to S5 in FIG. And this
Turn on (output) the power hold signal PH in S5
With this, the hoist motor 111 is rotated by the MC / U 109.
Is permitted, and in response to this, the CP of MC / U109
U starts the rotation control of the hoist motor 111. And
The MC / U 109 ends the control of the hoist motor 111 and
When the motor motor operation inhibition signal DIS is turned off, the ZM / C
100 proceeds from S6 to S7, and the power
Then, the control returns to S2. Note that
Branching from the first and second loop processing to S4 to S7
Thus, the operation of the zoom motor 5 during the operation of the hoist motor 111
Is prohibited, and the photometric switch 103 and
The operation of the release switch 123 is also ignored. (3) The CPU of the ZM / C 100 is
Zoom switch when executing each process of the second loop
When 102 is operated on the TELE side The CPU of the ZM / C 100 executes steps S18 to S19 in FIG.
The processing proceeds to the TELE subroutine shown in FIG.
Run. First, at S190, the wide end flag Fwi
After de is reset to “φ”, the cam ring 14 stops rotating.
If the stop position is at the tele end of POS = A, rotate the zoom motor 5
Since it is not necessary to return to S2 in FIG.
Other than (when this TELE subroutine is called, 2 ≦
 If POS ≦ 9), the zoom mode is set in S192.
After rotating the motor 5 forward, S193 to S196, S193
In the loop, the zoom switch 102 is in the neutral position from the TELE side
The rotation position of the cam ring 14 should not be returned to
Waits for POS = A, and if POS = A, S197
After performing the process of stopping the zoom motor 5 with,
It returns to S2 of 34. In this way, the zoom switch 102
Operate to the TELE side, and if the TELE operation is maintained
For example, the cam ring 14 stops at the telephoto end. However, tele end
The zoom switch 102 is opened on the way to
When returning to the default position, the process proceeds from S196 to S197,
The arm motor 5 is immediately stopped. That is, zoom switch
Switch 102 to the neutral position from TELE side at required timing
By setting the cam ring 14 to 2 ≦ POS ≦ 9
To stop at any position (any focal length)
it can. (4) The CPU of the ZM / C 100 is
While executing each process in the second loop, the zoom switch
When switch 102 is moved to WIDE side The CPU of the ZM / C 100 executes S2 in FIG.
The process proceeds from 0 to S21, and the WIDE sub blue shown in FIG.
Call the chin. First, at S210, the wide end
Check if Fwide is "1" and if Fwide = 1
The rotation stop position of the cam ring 14 is at the wide end of POS = 2.
Since it is not necessary to rotate the zoom motor 5,
Returning to S2 in FIG. 34, if Fwide = φ, the process proceeds to S211.
The arm motor 5 is reversed. And it is time at S212
Performs the process of waiting for tmsec.
When 102 is returned to the neutral position immediately after being operated to WIDE
In addition, the reverse rotation of the zoom motor 5 becomes uncertain,
The buckler in S224 and S225 by the reverse rotation operation
The brush removal operation increases, and the cam ring moves in the TELE direction.
This is because there is a risk of turning. Processing of S212
Then, a loop of S213 to S215, S223, and S213
The zoom switch 102 is returned from the WIDE side to the neutral position.
On the condition that the cam ring 14 is not
 Wait for POS = 1, and when POS = 1, S216,
In S217, the same processing as in S165 and S166 described above.
And S218 to S220, S218
Perform loop processing to eliminate backlash
Wait for OS = 2. Then, at the wide end where POS = 2,
In step S221, the wide end flag Fwide is set to "1".
After the rotation of the zoom motor 5 is stopped,
Return to S2. Thus, the zoom switch 102 is set to the WIDE side.
If the WIDE operation is maintained, the cam
Ring 14 stops at the wide end. Of course, toward the wide end
The zoom switch 102 is released halfway through the neutral position
Is returned to S224, S224 and S225
A buckler similar to S154 and S155 in FIG.
The zoom motor 5 is stopped in S226 after the flash removal processing.
Stop. That is, set the zoom switch 102 to the required time.
Return to the neutral position from the WIDE side
Ring 14 at any position corresponding to 2 ≦ POS ≦ 9 (any position
(Focal length). Finally, the processing after S22 in FIG.
Will be explained. The CPU of the ZM / C100 is
Release button 99 when executing
To turn on the photometric switch 103 (however,
(The condition is that the motor control switch 119 is not turned on.)
And the CPU of the ZM / C100 shifts from S22 to S23 and thereafter.
Proceed with the process. First, in S23, the power hold signal P
H is turned on to operate the MC / U 109. Next, S2
4, the zoom motor operation prohibition signal from the MC / U 109
By checking whether signal DIS has been turned on.
To check if the MC / U109 has been activated.
Is confirmed, the POS conversion result of S9 is MC in S25.
POS conversion for serial transfer to / U109
Result (zoom code data) in the output register
And synchronized with the clock CLK from the MC / U 109
And put the set data on the serial signal SO.
/ U109. And at S26
Wait for the transfer process to end, and when the transfer process ends,
The process proceeds to S27. At S27, a switch is issued from MC / U 109.
The serial signal SI with the check / operation end data is
Wait for input, serial signal SI input
Then, the input data is checked in S28. And
Operation end when input data indicates operation end of MC / U109
If data (power hold-off request data) END, S29
If the photometric switch check data SWSCHK, then to S31,
LOCK check data of the mode switch LOCKCHK
The process proceeds to S34. In S29, MC /
Since the operation of U109 has been completed,
Turn off the hold signal PH, and then MC / U1 in S30.
09 disables the zoom motor operation inhibition signal DIS
After confirming this, the process returns to S2. In S31, the photometry switch
Informs the MC / U 109 whether the switch 103 is on.
To turn off the power hold signal PH,
In the next S32, each switch is processed by the same processing as in S2 described above.
Input switch data. Then, in S33, input to S32
Switch 103 is turned on based on the data
Check if it is ON, and if it is not turned on,
Waits until the arm motor operation prohibition signal DIS is turned off.
Return to 2. That is, when the photometry switch 103 is off,
The power hold signal PH was turned off in the processing of S31.
Becomes effective. Also, if the photometry switch 103 is on
For example, in S36, based on the input data in S32, the mode
Mode switch 101 is switched to the LOCK position
Check that the metering switch is set to the LOCK position.
There is no need to notify that switch 103 is on
Therefore, the process returns to S2 via S30 described above. And mode
The changeover switch 101 must be in the LOCK position
If the power hold signal PH is turned on again in S37,
It returns to S27. That is, the CPU of the ZM / C100 is MC
Whether the photometry switch 103 is on from / U109
The metering switch 103 is on.
Then, turn the power hold signal PH on and off.
To let you know. Finally, S34 to S37, S
At 30, the mode is set as in the case of the photometric switch 103.
Mode switch 101 is switched to the LOCK position
To the MC / U 109. Note that the above S23 to S3
In 7, transfer from ZM / C100 to MC / U109
Zoom code data (POS conversion result)
The ON data of the switch 103 is output by the MC / U 109
It is used as follows. The zoom code data depends on the zoom position.
Shutter block as data representing the changing open F value
23 variable shutter speed control
POS = C representing the MACRO position is calculated by the distance measuring device 120.
If the distance measurement data exceeds the MACRO range, the display
The display in the viewfinder at 115 is turned on to allow the photographer
At the same time, and at this time the release switch 123
It is provided for control to ignore the operation. Light metering switch 1
The ON data of 03 is supplied to the start control of the photometric device 121.
Can be In the above embodiment, the battery 106 is
When stored in the battery case, the regulator 105
The example of unconditional operation was described.
For example, power supply from the battery 106 to the regulator 105
Operation of ZM / C100 by inserting a manual switch into the line
The start is performed by the photographer turning on this manual switch.
It can also be done. [0098] As described above, the lens shutter system of the present invention is used.
A zoom lens camera is a component lens group of a zoom lens system.
Can move to the zoom section and the storage position behind it,
Make sure that the binary code identification means is in the zoom zone.
Only with the manual zoom switch.
Zooming can be performed by
You. Use the main switch to switch between the zoom zone and the storage position.
When moving the zoom lens system between
Detect that a code identification means is in this transition area
To stop the power supply to the motor.
Main switch without lens system stopping
The on / off position of the zoom lens system allows shooting and storage
Can be securely moved to the
A reliable zoom lens camera can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual perspective view of main elements showing an embodiment of a lens shutter camera according to the present invention. FIG. 2 is a front view mainly showing an arrangement of a lens barrel block, a light emitting unit and a light receiving unit of the distance measuring device, a short distance correcting optical element, and a zoom motor. FIG. 3 is a plan view of FIG. 2; FIG. 4 is a sectional view taken along lines IV-IV and VV of FIG. 2; FIG. 5 is a sectional view taken along lines IV-IV and VV of FIG. 2; FIG. 6 is a vertical sectional view of a lens barrel block. FIG. 7 is a development view of a front group cam groove and a rear group cam groove of the cam ring. FIG. 8 is an exploded perspective view of a lens barrel block. FIG. 9 is a front view of the barrier block in an open state and a closed state. FIG. 10 is a front view of the barrier block in an open state and a closed state. FIG. 11 is a conceptual diagram of a distance measuring device based on the principle of triangulation. 12 is a conceptual diagram showing a state in which a short distance correction optical element is inserted in the distance measuring apparatus of FIG. FIG. 13 is an enlarged view of the short distance correction optical element of FIG. FIG. 14 is a front view of FIG. FIG. 15 is a plan view of a cam plate portion of the finder block. FIG. 16 is a sectional view taken along lines XVI-XVI in FIG. 15; FIG. 17 is a rear view of FIG. FIG. 18 is a plan view of FIG. 15 with the cam plate removed. FIG. 19 is a sectional view taken along the line XIX-XIX in FIG. 20 is a sectional view taken along the line XX-XX in FIG. FIG. 21 is a sectional view of an operation state different from that of FIG. 20; FIG. 22 is a longitudinal sectional view of FIG. 21 excluding the deflection prism operation plate when the deflection prism is inserted. FIG. 23 is a front view similar to FIG. 19, showing a state when the deflection prism is inserted. 24 is a sectional view taken along the line XXIV-XXIV in FIG. FIG. 25 is an exploded view showing the correspondence between the code plate, the land of the code plate and each cam groove. FIG. 26 is a table showing a zoom code by the code plate of FIG. 25 and a stop position by the code; FIG. 27 is a front view showing an example of the arrangement of each operation switch of the camera of the present invention. FIG. 28 is a rear view showing an example of the arrangement of each operation switch of the camera of the present invention. FIG. 29 is a plan view showing an arrangement example of each operation switch of the camera of the present invention. FIG. 30 is a cross-sectional view showing a relationship between the mode changeover switch and the macro button in different operating states. FIG. 31 is a cross-sectional view illustrating a relationship between a mode changeover switch and a macro button in different operating states. FIG. 32 is a block diagram showing a control system of the camera of the present invention. FIG. 33 is a drive circuit diagram of a zoom motor. FIG. 34 is a flowchart showing the operation of the camera of the present invention. FIG. 35 is a flowchart showing the operation of the camera of the present invention. FIG. 36 is a flowchart showing the operation of the camera of the present invention. FIG. 37 is a flowchart showing the operation of the camera of the present invention. [Description of Signs] 1 lens barrel block 2 finder and strobe block 3 light emitting unit 4 light receiving unit 4e short distance correction optical element 5 zoom motor 7 pinion 11 rear fixing plate 12 guide rod 13 front fixing plate 14 cam ring 16 front group frame 17, 19 Roller 18 Rear group frame 20, 21 Zooming cam groove 24 Front group lens frame 23 Shutter block 25 Helicoid 30 Barrier block 53 Cam plate 54 Finder block 55 Magnifying cam groove 54 Parallax correction cam groove 57 Strobe cam groove 58 Xenon lamp 63 , 64, 65 Guide groove 66 Zoom lens frame 67 Deflection prism operating plate 68 Strobe case 66a, 67a, 68a Guide protrusion 69, 70, 71 Follower pin 76 Position regulating piece 90 Code plate 92 Brush 99 Release button 100 Zoom motor control Unity G 101 Mode change switch 102 Zoom switch 103 Metering switch 104 Zoom encoder 109 Main control unit 107 Zoom motor drive circuits L1 to L6 Lens P1 Deflection prism

Continued on the front page (72) Inventor Shigeru Kondo 2-36-9 Maenocho, Itabashi-ku, Tokyo Asahi Optical Industry Co., Ltd. (72) Inventor Hideki Okubo 2-36-9 Maenocho, Itabashi-ku, Tokyo Asahi Kogaku (72) Inventor Norio Numako 2-36-9 Maeno-cho, Itabashi-ku, Tokyo Asahi Optical Industries Co., Ltd. (72) Inventor Saburo Sugawara 2-36-9 Maeno-cho, Itabashi-ku, Tokyo Asahi Optical Industry Co., Ltd. (56) References JP-A-60-3611 (JP, A) JP-A-56-147131 (JP, A) JP-A-56-6220 (JP, A) (58) Fields investigated Int.Cl. ⁶ , DB name) G03B 5/00 G03B 17/12

Claims (1)

(57) [Claims] In a lens shutter type zoom lens camera provided with a photographing optical system including a zoom lens system, a constituent lens group of the zoom lens system includes a zoom section for changing a focal length thereof, and a constituent lens group relative to the film section relative to the zoom section. The zoom lens system is configured such that the constituent lens group is in the zoom section, in the transition area from the zoom section to the storage position, and in the storage position. A discriminating means is provided by a binary code for discriminating each of the motors. A motor for driving the zoom lens system, a manual zoom switch for giving a forward / reverse rotation command to the motor, A main switch that gives a forward / reverse rotation command to the motor to move the motor Motor control means, wherein the identification means based on the binary code and the motor control means enable forward and reverse rotation of the motor by the manual zoom switch when the zoom lens system is in the zoom section, and the main switch A lens shutter type zoom lens camera, wherein control is performed such that stop of energization of the motor is prohibited when in the transition area, and the motor is stopped when the storage position is reached.