JPS62264034A - Lens shutter type zoom lens camera - Google Patents

Abstract

PURPOSE:To obtain a camera which has the same function as a single-lens reflex camera and is made light-weight and small-sized, by forming a photographic optical system with a zoom lens system and forming a finder optical system with a variable magnification finder optical system. CONSTITUTION:Range finding devices 3 and 4, a photographic optical system 1 driven in accordance with distance signals from range finding devices 3 and 4, and a finder optical system 2 consisting of an optical system other than the photographic optical system 1 are provided. In this camera, the photographic optical system 1 consists of the zoom lens system which changes the focal length continuously, and the finder optical system 2 consists of the variable power finder optical system which changes the visual field in accordance with the variance of the focal length of the zoom lens system. These zoom lens system and variable power finder optical system are driven by a single zoom motor 5. Thus, this camera has the same function as an auto-focus single-lens reflex camera provided with a zoom lens though being a lens shutter type camera and is made light-weight and small-sized.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a lens-shutter camera equipped with an autofocus function, and more specifically, a zoom lens system is used as a photographing optical system, and a finder optical system and a strobe device are used for zooming. It is a triple zoom camera that works together according to operations such as changing the magnification of the lens system.

"Prior art and its problems" Many autofocus lens-shutter cameras are known, but conventional products generally cannot change the focal length of the photographic optical system, and some Also known is a bifocal lens shutter camera in which a focal length changing lens can be inserted and removed, but this camera can only use two focal lengths, for example, wide-angle and telephoto, and standard and telephoto. It is not possible to cover intermediate focal lengths, and for this reason, the reality is that image creation using a zoom lens is limited to -eye reflex cameras. However, -eye reflex cameras are more expensive and heavier than lens-shutter cameras, and are a heavy burden for beginners or intermediate users to use.
Especially for overseas travel, where you want to travel compactly, or for female users, even if eye reflex cameras are recognized for their excellent depiction, they are large in size and heavy. In such cases, users may choose a lens-shutter camera that is lightweight and compact, cannot change the focal length, but can be changed in two steps.

In other words, it is common knowledge that in current lens-shutter cameras, the focal length cannot be changed, or that it is only possible to change the focal length in two steps, and users accept this and use lens-shutter cameras. I'm looking for. However, if a lens-shutter camera equipped with a zoom lens were to be put into practical use, it would have a great impact on society, and it is expected that it would be able to attract even more users.

In other words, users who think that eye reflex cameras are too large and current lens-shutter cameras are unsatisfactory.

``Object of the Invention'' The present invention is based on the above-mentioned analysis of the current situation between eye reflex cameras and lens-shutter cameras, and provides a lens-shutter camera equipped with a zoom lens, which is equipped with an autofocus function and a strobe function. The objective is to obtain the most advanced lens-shutter camera. Furthermore, the present invention aims to provide a lens-shutter camera that is capable of macro photography in addition to zooming, and in which various functions such as the finder optical system, strobe device, and autofocus function operate in the same way as during normal photography. purpose.

"Summary of the Invention" The present invention includes a distance measuring device, a photographing optical system driven in accordance with a distance signal from the distance measuring device, a finder optical system comprising an optical system different from the photographing optical system, In a lens-shutter camera equipped with a strobe device, the photographing optical system is composed of a zoom lens system that continuously changes the focal length #, and the viewfinder optical system is linked to changes in the focal length of this zoom lens system. The strobe device is composed of a variable magnification finder optical system that changes the field of view, and the strobe device is comprised of a variable illumination angle strobe device that changes the strobe illumination angle in conjunction with changes in the focal length of the zoom lens system. ,
and these zoom lens systems, variable magnification finder optical systems,
The present invention is characterized in that the variable illumination angle strobe device t is driven by a single zoom motor.

According to this configuration, an advanced lens-shutter camera is obtained in which only zooming and shutter release are manually operated, and it is functionally equivalent to an eye reflex camera or has a built-in strobe device. , - It is possible to obtain a lens-shutter type camera that is more highly systemized than an eye reflex camera.

Furthermore, in order to enable macro photography, the present invention uses a zoom lens system having a macro photography function that allows part or all of the lens system to be further extended from one focal length end. The Ficida optical system changes the field of view in conjunction with changes in the focal length of the zoom lens system, and also corrects parallax by bending the viewfinder optical axis in the direction of the optical axis of the photographing optical system in the macro shooting range. The strobe device consists of a variable magnification finder optical system with optical elements, and a variable illumination angle strobe device that changes the strobe illumination angle in conjunction with changes in the focal length of the zoom lens optical system and transition to the macro shooting range. It is characterized by its composition.

The distance measuring device is based on the principle of triangulation in order to obtain a reliable distance measurement signal even in the macro shooting range. It is possible to use a distance measuring bag W equipped with an optical element that refracts light and optically extends its base line length.

“Embodiments of the invention” The invention will now be described with reference to illustrated embodiments.

As shown in the overall outline of the lens barrel camera of the present invention in FIG.
, a finder and a strobe block (hereinafter simply referred to as finder block) 2, a light emitting section 3 and a light receiving section 4 of a distance measuring device (AF snow), and a zoom motor 5 for zooming. These elements are fixed on a base plate 6 (see FIGS. 2 to 4), which serves as a fixed part of the camera body.

That is, the base plate 6 is a lens barrel support plate portion 6 that is perpendicular to the optical axis.
a, and a horizontal support plate part 6b which is formed by bending the upper end of this lens barrel support plate part 6a at a right angle, and the lens barrel support plate part 6alL.
:II cylinder pro-nk 1 is supported. Further, a zoom motor 5 is fixed to the horizontal support plate section 6.1) at the center of the upper part of the lens barrel block 1, and a light emitting section 3 and a light receiving section 4 are located on both sides of this zoom motor 5. . The finder block 2 is fixed to the front right side of the horizontal support plate portion 6b.

The lens barrel block 1 is driven by a zoom motor 5. The structure of the lens barrel block 1 will be explained with reference to FIGS. 6 to 10. A rear fixing plate 11 is fixed to the lens barrel support plate portion 6a of the zero-base plate 6 via fixing screws 10. As shown in FIG. After this, four guide rods 12 are fixed to the fixing plate 11 parallel to the optical axis and located around it, and a front fixing plate 13 is fixed to the tip of these guide rods 12. This is the main fixing element of the cylinder block 1.

A cam ring 14 is located between the rear fixing plate 11 and the front fixing plate 13.
is rotatably supported, and a gear 15 that meshes with the pinion 7 through an M contact or a gear train is fixed to the outer periphery of the cam ring 14 with a fixing screw 15a (FIG. 6). This gear 15 may be a sector gear that covers the rotation range of the cam ring 14.
Zooming cam grooves 20 and 21 for the rear group are cut.

FIG. 7 is a developed view of the zooming cam groove 20.21, and the zooming cam groove 21 for the rear group has a wide-angle end fixed section 21a, a variable power section 21b, and a telephoto end fixed section 21cj! have.

On the other hand, the zooming cam groove 20 for the front group includes an opening/closing section 20a of the barrier block 30 and a lens storage section 20t).
, a wide-angle end fixed section 20c, a variable power section M20d, a telephoto end fixed section 20e, a macro feed section 2Of, and a macro end fixed section M20Q. The rotation angle of each of these sections is such that the total angle θ1 of the opening/closing section 20a of the zooming cam groove 20, the lens storage section f1201), and the wide-angle end fixing section 20c is equal to the angle θ1 of the wide-angle end fixing section 21a of the zooming cam groove 21. The zooming section 20d and the zooming section 21b have the same angle θ2, and the telephoto end fixed section 2
0e, the macro outlet 112Of, and the macro fixed section 209, the total angle θ3 is the same as the angle θ3 of the telephoto end fixed section 21c. Note that the specific zooming angle of this embodiment is 35 mm to 70 mm.

These zooming cam grooves 20 and 21
In the figure, the front group frame 1 is movably fitted into the Gytro-Ndo 12.
The O-roller 17 of No. 6 and the roller 19 of the rear group frame 18 are fitted. A decorative frame 22 is fixed to the front group frame 16 via fixing screws 22a, and a shutter protector 23 is further fixed to the front group frame 16. The front group lens frame 24 holding the front group lens L1 is
It is screwed together with this shack block 23 by a helicoid 25, and has an arm 24a that engages with a lens extension lever 23a of the shutter block 23. Therefore, when the lens advancing lever 23a rotates in the circumferential direction and the front group lens frame 24 rotates accordingly, the front group lens frame 24 rotates.
4 moves in the optical axis direction according to the helicoid 25.The rear group lens L2 is fixed to the rear group frame 18 with WjL fixing feet.

The shirt tab block 23 itself is well known. The built-in pulse smoke rotates the lens advance lever 23a by an angle corresponding to the distance measurement signal from the distance measurement device described above, and further closes the closed shutter (sector) 23b at a predetermined time. After that, press the lens extension lever 2.
3a! Return to original position. Such a shutter block 23 is widely known from, for example, Japanese Patent Application Laid-Open No. 60-225122, Japanese Patent Application Laid-open No. 60-235125, etc.
The present invention basically utilizes such a shutter block as is.

Next, regarding figures M8 to 10, the barrier block 30
Explain. This barrier block 30 is connected to the cam ring 1
4 is rotated in the opening/closing section 20a, the rotational force is used as a driving force to open and close the pair of barriers 31 and 31 located in front of the front group lens L1. Barrier 31
．． 31 is pivotally connected to the front end surface of the barrier 70 by a pin 32.

The pair of barriers 31.31 are symmetrically opposed, with a barrier plate portion 31a projecting on the optical axis and a drive arm portion 31 extending on the opposite side of the barrier plate portion 31a with respect to the bottle 32.
1), and a bell 33 implanted in this drive arm 311).
The operating arm 34a of the opening/closing spring 34 is engaged with the opening/closing spring 34. The opening/closing spring 34 is made of, for example, a molded product of synthetic resin, and includes a spring arm 34b and a drive IBj134c that form a letter shape with the operating arm 34a. and the barrier block 30 has a ton 3
5 is pivoted. Spring Hp4bl (tlnln is in contact with the inner wall of the frame 2, and is normally connected to the barrier plate portion 3 via the working arm 34a)
1a applies a biasing force in the direction of retreating from the optical path φ, drive 1i! 34c is engaged with the flange portion 36a of the opening/closing bottle 36 that is fitted in the decorative frame 22 so as to be movable in the radial direction.
The head of the opening/closing lever 36 engages with the free end of an interlocking lever 38 which is pivotally connected to the front fixed plate 13 by a pin 37.

When no external force is applied to the opening/closing bottle 36, the spring force of the spring arm 34b of the opening/closing spring 34 positions the opening/closing bottle 36 at the radially protruding end, and at this time the barrier plate portion 31a retreats from the optical path. In other words, the barrier opens, whereas the interlocking lever 38! When the opening/closing door 36 is pushed radially inward through the drive arm 34c, the operating arm 34a! The balise 31 rotates through the barrier plate portion 31a to position it on the optical path. That is, the front of the front group lens L1 is closed. The interlocking lever 38 is pressed by a closing protrusion 4o formed protruding from the inner surface of the cam ring 14 when the cam ring 14 rotates within the opening/closing section 2Oa. Therefore, when the cam ring 14 is rotated to one rotation end by the zoom motor 5, the barrier is automatically closed.

Next, regarding cylinder figures 11 to 14, the distance measuring device CAFHM
) Various types of ranging devices having a light emitting section 3 and a light receiving section 4 are known, but in this embodiment, a triangular distance measuring device that uses a position detection element (for example, PSD) as a light receiving element is used. A type based on the principle of distance measurement is used. FIG. 11 is a conceptual diagram thereof, in which the light emitting section 3 is a light source 3 such as an LED.
a, and a light projecting lens 3b, and the light receiving section 4 includes a PSD 4a that is separated from the light source 3a by the base line length, and a light receiving lens 4b.
It is equipped with While the CCO consists of a large number of light-receiving elements, the PSD4a, as is well known, is a single elongated light-receiving element, with - common terminals (cathode) C and two terminals with different polarities from the common terminal C. (Anode) A, B! have.

In this distance measuring device, when the light source 3a emits light and the reflected light reflected by the object is incident on the PSD 4a, the position of the light hitting the light receiving surface varies depending on the distance to the object 0, and the terminal A
, 8 photocurrents are generated corresponding to the positions of the light spots. Therefore, by measuring this photocurrent, the object distance can be determined.
The above is the distance measurement principle of triangulation distance measurement using the PSD4a.

Based on this ranging data, the shutter unit 23 described above
By applying an operation signal to the camera, automatic focusing can be performed in the entire zooming range. That is, when a driving pulse based on distance measurement data is applied to the pulse smoke of the shutter unit 23, the lens advancing lever φ3a rotates by an angle corresponding to the pulse, thereby rotating the front group lens frame 24 together. Therefore, the helicoid 25 moves the front group lens frame 24 (front group lens Ll) in the optical axis direction so that it becomes the in-focus position. You can also do that.

The distance measurement accuracy based on the diagonal distance measurement principle basically depends on the distance between the light emitting part 3 and the light receiving part 4, that is, the baseline length, so it is better to make the distance between them as large as possible. In this case, the base line length is increased, and a zoom motor 5 is arranged between the light emitting section 3 and the light receiving section 4, which are generated as a result of the increased length. This position of the zoom motor 5 is effective in increasing the baseline length of the distance measuring device and at the same time reducing the size of the entire camera. The zoom motor 5 is fixed to a morph support plate 6C that is bent and formed integrally with the base plate 6, and a nion 7 is fixed to its drive shaft 5a.

As described above, the lens shutter type camera of the present invention has the zooming cam groove 20f in the cam ring 14 for moving (feeding out) the front group lens L1 further forward from the telephoto end.
is provided. During this macro shooting, if the distance measuring device t using the light emitting section 3 and the light receiving section 4 is operated as is, the reflected light from the subject in the close position will not enter the PSD 4a, that is, distance measurement will not be possible, so the shutter will be blocked. The present invention has a novel configuration for correctly detecting the subject position even during macro photography. Next, referring to FIGS. 12 to 14, the distance measuring device used during macro photography will be explained.

On the front of the light receiving unit 4 of the distance measuring device, there is a
A short distance correction optical element 4e consisting of a prism 4c having two total reflection surfaces and a mask 4d advances. The prism 4c has the effect of optically extending the base line length of the distance measuring device and the effect of refracting light rays. The mask 4d is for blocking light other than the necessary optical path, and has an opening 4f on the subject side,
It has an opening 49 on the side of the light receiving lens 4b. The aperture 4f is opened in a slit shape at a distance β from the optical axis of the light emitting lens 3b to the optical axis of the light receiving lens 4b, and the aperture 49 is spaced from the optical axis of the light receiving lens 4b. It has slits that correspond to the positions.

According to this configuration, as shown in FIG. 12, during close-up photography, the effect of the prism 4C causes the optical axis of the light-receiving lens 4b of the distance measuring device to be translated by β in the direction of the baseline length, and a finite distance of 1. In this case, the optical axis of the light receiving lens 4b and the optical axis of the light projecting lens 3b can be made to intersect.

In order to perform short distance correction in a conventional distance measuring device of this type, a technique is known in which a prism having only the effect of refracting the distance measuring light is disposed in front of the distance measuring optical system. However, with this conventional technology, the amount of shift of the spot image on the PSDAa due to changes in subject distance during close-up photography is insufficient;
There was a problem that positive 1iI napofocus correction could not be performed.

On the other hand, as described above, according to the present short distance correction device which not only refracts the distance measuring beam but also moves it in parallel by l in the direction of the baseline length, the PSDAa is By increasing the shift amount of the upper spot image and appropriately setting the angle 61, refractive index, etc. of the prism 4C, the correct subject pressure M can be detected. By driving the shirt tough 0tsuk 23 on the basis of this distance measurement data, a photograph with the correct focus can be obtained even in macro photography.

As shown in FIGS. 1 to 4, this short-distance correction optical element 4e is fixed to one end of an arm 42 pivotally connected to the base plate 6 by a shaft 41 located below the light receiving section 4.
An interlocking protrusion 43 is integrally provided at the other end of the arm 42 . This arm 42 maintains its linearity when no external force is applied to it, but when an external force is applied to it, it has the visibility of being elastically deformed. Also, the short distance correction optical element 4e
is normally biased to rotate in a direction to retreat from the front of the light receiving section 4 by a tension spring 46 .

The cam ring 14 is provided with an advancing protrusion 44 that engages with the interlocking protrusion 43 to advance the short distance correction optical element 4e to the front of the light receiving section 4 when the cam ring 14 is rotated to the macro photographing position. The position and shape of the protrusion protrusion 44 are determined so that the optical element 4e can be rotated more than the front surface of the light receiving section 4, but the rotation end of the protrusion protrusion 44 of the short distance correction optical element 4e is Gear support plate 6 integrated with 6
The side surface of e is regulated, and the overcharge caused by the protrusion protrusion 44 is absorbed by the visibility of the arm 42.

According to the above structure, when the cam ring 14 rotates to the macro photography position, the short distance correction optical element 4e can be automatically positioned in front of the light receiving section 4.

Note that a drive signal from the distance measuring device having the light emitting section 3 and the light receiving section 4 to the shutter flock 23 is sent via a flexible printed circuit board (FPC board) not shown. This flexible printed circuit board is bent and arranged inside the cam ring 14 so that it can be extended and folded with sufficient margin in the entire movement range of the front group lens L1 and the rear group lens L2.

Next, returning to FIG. 1 again, the finder block 2 will be explained. The finder block 2 includes a finder device M8 and a stop device M9. Both the finder device 8 and the strobe device M9 change the viewfinder field of view and the strobe illumination angle (light intensity) in conjunction with changes in the focal length of the lens barrel block 1. The zoom morph 5 described above is used as a power source for this purpose.

The gear 15 of the cam ring 14 meshes with a pinion 50 that is different from the above and the nion 7, and the shaft 51 of this nion 50 is extended to the rear of the base plate 6, and a koji speed gear train 52 is attached to the rear end of the pinion 50. It is provided. A final gear 52a of the reduction gear train 52 meshes with a rack 53a of the cam plate 53. The cam plate 53 is slidable in the left-right direction, and a rack 53a is integrally provided at the tip (lower end) of the lower bent portion 531 at the rear end. The reduction gear train 52 reduces the rotation of the gear 150, reduces the movement of the cam ring 14, and applies it to the cam plate 53. The cam plate 53 is equipped with a finder M8
a variable power cam groove 55, a parallax correction cam groove 56,
A strobe cam groove 57 for strobe drawing 9 is also provided.

The lens system of the finder device 8 basically consists of a fixed subject side lens group L3, an eyepiece lens group L4, and a movable variable magnification lens group L5, and further includes a deflection prism P1 for macro photography. We are prepared. Variable magnification lens group L5
is used to match the photographic screen obtained by changing the magnification of the lens barrel block 1 with the field of view provided by the finder M8, and the deflection prism P1 is advanced onto the optical axis only during macro photography to particularly correct parallax. In other words, in a lens-shutter camera, parallax is unavoidable, and the amount of parallax increases the closer you shoot, but the camera of the present invention is capable of macro photography, and the amount of parallax increases at this time. Only when photographing, a wedge-shaped declination prism P1, which is thicker at the bottom and thinner at the top, is inserted into the optical path to bend the optical path downward so that the area closer to the photographed area can be observed.Figure 22 shows the declination prism. It shows an outline of the optical path when P1 is inserted.

In addition, the M9 strobe device narrows down the irradiation angle as the focal length of the photographic lens becomes longer, that is, as the lens extends.
During macro photography, the illumination angle is widened to reduce the amount of light hitting the subject. Therefore, in this embodiment, the Fresnel lens L6 is fixed, and the reflective shade 59 holding the xenon lamp 58 is moved in the optical axis direction.

Next, specific structural examples for giving the above movement to the finder device M8 and the strobe device M9 will be explained with reference to FIGS. A parent plate 60 is fixed, and a guide pin 62 that fits into a linear guide groove 61 of the cam plate 53 is fixed to this finder parent plate 60. The cam plate 53 includes the linear guide groove 61 and the guide bin 62, and a restraining guide 6 formed as a cut-and-raised piece on the finder main plate 60 to suppress the floating of the front of the cam plate 53.
0a restricts the sliding direction to the left and right (M
Figure 2S, Figure 16).

A variable power lens guide groove 63, a declination prism guide groove 64, and a strobe guide groove 65 are cut in the finder signboard 60 in the front-rear direction, and the variable power lens guide groove 63 supports a variable power lens group LSIv. The guide protrusion 66a of the variable power lens frame 66 fits into the deflection prism guide groove 64.
The guide protrusion 67a of the deflection prism operating plate 67 is fitted into the strobe guide groove 65, and the guide protrusion 68a of the strobe case 68 to which the reflector 59 is fixed is fitted into the strobe guide groove 65.
The movement direction of these elements is regulated in the front-back direction. Driven pins 69.7o and 71 are installed in the guide protrusions 66a, 67a and 68a, respectively, and these driven pins are connected to the variable power cam groove 55, the variable-six correction cam groove 56, and the strobe light, respectively. It fits into the cam groove 57. Therefore, when the cam plate 53 moves left and right,
The variable power lens frame 66, the deflection prism operating plate 67, and the strobe case 68 move back and forth according to the shapes of these cam grooves 55, 56, and 57, respectively.

In FIG.
The zooming cam grooves 20 and 21 correspond to the sections described below. That is, the variable magnification cam groove 55 has a wide-angle end fixed section 55a, a variable magnification section 55b, and a telephoto end fixed section groove 55c, and the angles θ1 and e2 of each of these sections are
, θ3 are in correspondence with FIG. On the other hand, the parallax correction cam groove 56 has a non-protruding section 56a, a protruding interlocking section (macro feeding section), a protruding interlocking section 56b, and a protruding position fixed section (mouth end fixed section) 56c@. The strobe cam groove 57 has a wide-angle end fixed section 57a and a variable magnification section 57b.
, telephoto end fixed section 11'157c, macro feed section 57d
, and a mouth end fixed section 57e. These cam grooves 55, 56, 57 and the zooming cam groove 20
．． 21 is shown in FIG.

The variable magnification lens frame 66 supporting the variable magnification lens group L5 has a first
As shown in FIG. 9, it is movably supported in a suspended manner on the guide surface 54a of the finder block 54. When this moves according to the variable magnification cam groove 55, the subject side lens group L3, the eyepiece lens group L4, and the variable magnification lens group L
Such an optical system, in which the magnification of the finder optical system including lens 5 changes, and the photographing coverage by the lens barrel block 1 and the viewfinder field of view are almost completely different, can be obtained with a simple lens design technique.

Next, the deflection prism operating plate 67 will be explained mainly with reference to FIGS. 20 to 22. First, the deflection prism P1 made of synthetic resin is rotatably supported by the finder block 54 at fulcrum points 74 at its lower ends on both sides. A biasing torsion spring 75 is hung and rotated on the fulcrum pin 74, and one end of this torsion spring 75 is attached to the deflection prism P.
The hook is stopped by a position regulating piece 76 fixed to the side of 1,
The 6-position regulating piece 76, which normally biases the deflection prism P1 to be positioned within the optical path of the subject-side lens group 3 to the variable magnification lens group L5, is an arcuate escape formed in the finder block 54. It is located within the groove 79. The deflection prism actuating plate 67 is sandwiched between the finder block 54 and a guide plate 8o fixed thereto, and the guide bin 81 installed on the side surface of the guide plate 8o is attached to the finder block 541.
It fits into the straight guide groove 82 formed in this manner.

The position regulating piece 76 can engage with a rotation prevention surface 77 and a rotation surface 78 of the deflection prism operating plate 67 . When the driven pin 7o is in the non-protruding section 56a of the parallax correction cam groove 56, the deflection prism actuating plate 67 brings its rotation prevention surface 77 into contact with the position regulating piece 76, and resists the force of the torsion spring 75. The deflection prism P1 is resisted and retreated from the optical path, but when the driven beam 7o reaches the protruding interlocking section 56b, the rotation surface ``78'' is made to correspond to the position regulating piece 76.

Then, the deflection prism P1 rotates into the optical path due to the force of the torsion spring 75, and its position regulating piece 76 moves toward the rotation surface 7.
8, it gradually protrudes into the optical path as shown in FIGS. 21 and 22, bends the finder optical path as shown in the same figure, and brings the object below into the field of view. In other words, it reduces parallax during macro photography.

As shown in FIG. 24, the side surface of the strobe case 68 has a linear guide groove 84 formed in the guide plate 8o in the front and rear direction
A guide block 85 is provided which fits into the guide block 85. Also, the upper and lower parts of the strobe case 68 (this is the height adjustment door 86 that prevents the strobe case 68 from falling over (1! Figure 17, Figure 23)
is fixed. Therefore, this strobe case 68
When the cam plate 53 moves left and right, it moves forward according to the shape of the strobe cam groove 57. Magnification variable area M of strobe calm groove 57
57b is a xenon lamp 5 for the Fresnel lens L6.
8 is retracted, and has the effect of narrowing the irradiation angle range of light emitted from the Fresnel lens L6 as the lens moves backward, and substantially increasing the guide number as the focal length increases. On the other hand, in the macro delivery section 57d, the irradiation angle is widened, and the guide number for macro photography is substantially reduced.

(Left below) The above is an explanation of the mechanical configuration of the lens-shutter camera according to the present invention.Next, the control system Iv! 52 will be revealed. In this camera, there are changes in the focal length of the zoom lens in the lens barrel block 1, changes in the aperture F-number due to changes in the focal length, the fact that the lens is at the wide-angle end, and the telephoto (tele) ) It automatically detects information such as whether it is at the edge, in the storage position, or in the macro photography position, and performs various controls based on this information.

In order to detect this lens position, a code plate 90 is fixed to the outer periphery of the cam ring 14 of the lens barrel block, as conceptually shown in FIG. The base end of the brush 92 that comes into sliding contact with the plate 90 is fixed. FIG. 25 is a developed view of the code plate 90. Above this figure, the zooming cam grooves 20, 21 of the cam ring 14 and the cam grooves 55, 56, . . . of the cam plate 53 are shown.
57 cam profiles are also depicted.

The brush 92 has a common terminal C and terminals TO1TI, T2, and T3 labeled O11, 2, and 3, and when these terminals TO to T3 are in contact with the conductive land 93 of the code plate 9o, When there is no contact, a signal "φ" is extracted, and when there is no contact, a signal "1" is extracted, and the rotational position of the cam ring 14 is detected by the combination of these "1" and "φ" signals. 94 is a dummy terminal provided between the conductive lands 93.

The above 4-bit information of TOTI, T2, and T3 is the zoom code data ZP of the zoom code encoder.
It is given as O, ZPI, ZP2, ZP3. 26th
The figure is a combination table of "1" and "Φ" of these zoom code data, and in this example, the rotation position of the cam ring 14! (POS) from “φ” to “9” and “A”, “
B'', rCJ (hex, hexadecimal n
Detection is performed in 13 stages: umber). "0" is the lock (LOC) position, "C" is the macro (MACRO) position, and the focal length value f is different between J.
l! There is fo-f7'.

This rotation position! (PO8) is also drawn below the code plate in FIG.

On the other hand, rotation control of the cam ring 14 is performed by a mode changeover switch 101' and a zoom switch 102. FIGS. 27 to 29 show both switches 101
．． A specific example of the thickness distribution for the camera body of No. 102 is shown below.
Note that 99 is the release button, press it one step to switch to photometry switch 1o3 (Figure 32)! ON, press twice to turn on the release switch 123 (same).

Mode change switch] 01 is lock (LOC), switch A
(200M), and? '70 (MACRO) This is a transfer switch that can take three positions.As shown in Figures 29 to 31, when the macro button 101a is not pressed, the switch lever 10
1b can be moved between the ROC position and the 200M position, and when the switch lever 101tl is slid onto the macro button 101a while the macro button 101a is pressed, it becomes the MACRO position. And in the LOCK position, the release cannot be released and the zoom does not work, 200M.
In this position, release and zoom can be operated.
In the MACRO position, the shutter release is possible, but the zoom does not operate.

Also, the zoom switch 102 is in neutral (
The zoom motor 5 rotates in the forward and reverse directions by switching the switch to wide-angle (WIDE) and telephoto (position E) by applying operating forces in different directions.

The mode changeover switch 101 and zoom switch 102 basically operate the camera of the present invention as follows.

1. When the mode selector switch 101 is in the LOCK position, the zoom motor 5 rotates in the opposite direction, and the code plate 9o and brush 92
The rotational position of the cam ring 14 detected by (hereinafter referred to as
pos) becomes "φ" (FIGS. 25 and 26, hereinafter referred to as "φ"), the zoom motor 5 stops.

2. When the mode selector switch 101 is in the MACRO position, the zoom motor 5 rotates forward, and when PO8 becomes "C",
The zoom motor 5 stops.

3. When the mode selector switch 101 is in the 200M position and the zoom switch 102 is in the WIDE position, the zoom motor 5
rotates in the reverse direction, and in position E, it rotates in the forward direction. When the mode is set to E, P
When O3 becomes "A", the zoom motor 5 stops. W
When in IDE, the double zoom motor 5 continues to rotate in reverse for a short time when PO3 becomes "1", and then rotates forward and PO8 becomes "1".
2", it will stop.

In addition, if the zoom switch 102 is turned OFF while the zoom motor 5 is rotating (in the neutral position), when the zoom motor 5 is in the neutral position (forward rotation in the force direction), the zoom switch 102 is immediately stopped, W
After rotating forward for a certain period of time when in the IDE direction (reverse),
Stop. This short period of forward rotation eliminates the backlash of the mechanical system in the lens barrel block 1 and finder block 2, and eliminates the change in the stopping position when stopping in the WIDE direction and when stopping in the E force direction. It's for a reason.

The entire control system of the camera of the present invention including the above control will be explained in more detail with reference to FIGS. 32 to 37. First, the 32nd
In the figure, the zoom motor control unit (hereinafter referred to as ZM/C) 10° is composed of, for example, a 1-chip microcomputer, and its internal program memory (R
OM) stores the program to be described in detail.

This ZM/C100 has the mode changeover switch 1 described above.
01, the zoom switch 102, the photometry switch 103, and the zoom encoder (shown as a switch equivalent circuit in the figure) 104 are input, and the main control unit (hereinafter MO/
From 109 (referred to as U), a zoom motor operation prohibition signal D
IS, a clock CLK for serial data transfer, and a serial signal SI carrying switch check/operation completion data, which will be described later, are input. Also this ZM/C100
A rotation control command ROM is output from M to the zoom motor drive circuit 107 that controls the zoom motor 5.
The C/IJ 109 is outputted with a power hold signal PH whose power source is 1FrON10FF and a serial signal S○ carrying zoom code data zpo to ZP31:6 from the zoom encoder 104.

The mode changeover switch 101 is set to the above-mentioned lock (LOCK).
), sum (2QQM), and ? '7 [1(M
(ACRO) (7) Create two signals for lock ACRO at LOC in Table 1 below according to the three positions.

-Table 1 The zoom switch 102 has the three positions 11 of WIGε momentary, OFF, and position E momentary as described above.
Take F.

The photometry switch 103 is activated by pressing the release button 99 one step (activation signal 5WS), and the distance measurement device 1121
(the above-mentioned one comprising the light emitting section 3 and the light receiving section 4) and the photometry device 1 (A/E) 120 are operated.

The zoom encoder 104 changes the rotational position of the cam ring 14 from ZPO to Z using the code plate 90 and the brush 92 described above.
It is detected as a zoom code of P3, converted to a value of PO3, and given to the Z M/C100.

The switch scan control process performed through the terminal 5sci applies a voltage "H" when checking the input of each of the above-mentioned switches, and sets it to "L" at other times to reduce current consumption.

The regulator 105 is supplied with power from the battery 106 and supplies a required drive voltage to the ZM/C 100.

The zoom motor drive circuit 107 has a circuit configuration as shown in FIG. 33, for example, and receives a 4-bit rotation control command ROM (FOWN, FOWP, R
EVN, REVP) 1. : Controls the rotation and stopping of the zoom motor 5 as shown in Table 2.3.

(Left below) Table 2 Forward rotation Table 3 Reverse rotation MC/U 109 is also composed of, for example, a 1-chip microcomputer, and its internal program memory (ROM)
By executing the program stored in , the following functions are achieved.

(+) Hoisting motor 11 via hoisting drive circuit 110
(2) A function to drive and control the shutter block 23 mentioned above via the driver 112. (3) A function to control various display devices 115 via the driver 114. (4) A function to control the rotation of the above-mentioned shutter block 23 via the driver 114. Function to control unit 117 (strobe circuit including xenon arc tube 58) (5) Z M/C 10 via interface 118
Function to output the zoom-to-zero mode disabling signal DIS (6) Clock CLK1 for serial transfer via the interface 118! (7) A function to output a serial signal SI carrying the switch check/operation completion data, which will be described later, via the interface 118. (8) A function to continue the operation of the regulator 124. In order to fulfill its functions,
Switch data from winding motor control switch 119 such as film rewind switch and back cover switch, photometry device 1
Photometry data from 121, distance detection data from distance measurement drawing 120, film sensitivity setting or automatic reading device! (IS
O) Film sensitivity data from 122 and switch data SW date from release switch 123 are input.

Further, the regulator 124 continues to operate by the MC/U 109, and is started/stopped depending on the presence or absence of the power hold signal PH input via the interface 118, and switch data from the hoisting motor control switch 119. It also starts up by
During operation, the required power is supplied to each part of the main control system except for the zoom control system.

Next, ZM/C1 shown in each figure from FIG. 34 to FIG.
The operation of the ZM/C100 will be explained with reference to the flow diagram of the program stored in the ROM in the ZM/C100.

First, referring to FIG. 34, when the battery 106 is housed in the battery case and power is supplied from the regulator 105, the CPU of the ZM/C 100 performs an initialization process in Sl.

Next, in step 82, the switch scan control processing described above is performed, and the switch states of the mode selector switch 10], zoom switch 102, photometry switch 103, and zoom encoder 104 are input, and then photometry is performed in step S3 based on the input data. Check whether switch 103 is off.

If the photometry switch 103 is on, S2
, S3 is repeated until the photometry switch 103 is turned off, and if the photometry switch 103 is turned off, the process advances to S4.

In S4, it is checked whether the zoom motor operation prohibition signal DIS from the MC/U 109 is on (for example, "1"), and if it is on, the process proceeds to S5, and when it is off (for example, "φ"). If so, proceed to S8.

This zoom motor operation prohibition signal DIS is transmitted to the battery 10.
In order to reduce the power consumption of the hoisting motor 6, the hoisting motor 111 and the zoom morph 5 are prohibited from rotating at the same time, and the hoisting motor is activated by the MC/U 109 or the hoisting motor control switch 119 mentioned above. 111, the MC/U 109 turns on the zoom motor operation inhibition signal DIS.

When this zoom motor operation prohibition signal DIS is on,
The above-mentioned power hold signal PH is turned on (for example, "1") in S5.The meaning of outputting the power hold signal PH in S5 is that the MC/U 109 is actuated by the winding morph control switch 119 to turn on the winding morph. Upper motor 1
11 When rotating the zoom motor 5 and the winding The upper motor 111 and the upper motor 111 are prevented from rotating at the same time.

Then, in the next step 86, the zoom motor operation prohibition signal DIS from MC/U 109 is turned off, that is, MO/U 1
09 until the rotation control of the hoisting motor 111 is completed, and when the zoom motor operation prohibition signal DIS turns off, the power hold signal PH is turned off (for example, "O
'') to turn off the regulator 124 and then return to the process of S2.

Note that even if the regulator 124 is turned off, power supply is not stopped entirely, but power supply to, for example, the display device 115 is continued.

Also, when the zoom motor operation prohibition signal DIS is off,
In step S8, the status of each switch is input through the same process as in step S2, and in step 89, the state of each switch is input from the zoom encoder 104 (DC
-Mom:l-de ZPo-ZP3 is the aforementioned POS (25th
(see FIG. 26), PO8 conversion is performed to determine which value corresponds to this value.

In this PO8 conversion, 510 selects the switching position M by the mode changeover switch 101 based on the data input in S8.
Determine whether (mode) is "ShiOC" or "ZooM" is rMAcRo J, and if "r LICK", select S11, rZOOMJ7J et al. 5141t:, rMA
If it is cROJ, the process proceeds to S16.

If the result of PO3 conversion in S9 is pos=φ, that is, the LOCK position, in S11, it is checked whether or not the result is pos=φ, that is, the LOCK position, and if pos=φ, the process returns to S2, and PO8≠φ If so, the process advances to S12, where the zoom motor 5 is reversed (rotation control command RCM for rotation control command 3), and a mode subroutine to be described later is executed at S13, and the process returns to S2.

r In the case of ZOOMJ, in S14, it is first checked whether the result of PO3 conversion in S9 satisfies PO8≦1, and if PO8≦1, the process proceeds to S17 and the zoom motor 5 is rotated forward (see table). After executing the mode subroutine to be described later in S13, the process returns to S2.

If PO8≧2, it is checked in S15 whether the result of PO8 conversion in S9 satisfies PO8≧8, and if PO8≧8, the zoom motor 5 is reversed in S12, and the process will be described later in S13. After executing the mode subroutine, return to S2.

If PO8≦A, then 2≦PO8≦A, so 318
Proceed with the process.

1JAcRo J, in S16, PO in S9
8 Check whether the converted result is pos=c, that is, the MACRO position, and if pos=c, jump to 922, and if POS#C, rotate the zoom motor 5 in the forward direction at 517, and at S13 execute the subroutine described later. After executing the call, the process returns to S2.

Next, in 318, based on the data input in S8,
The zoom switch 102 is switched to the E side (
It is checked whether the position E is ON), and if the position E is ON, a position E subroutine to be described later is called in step 519, and then the process returns to S2, and if the position ε is OFF, the process proceeds to S20.

In S20, the zoom switch 102 is switched to the WIDE side based on the data input in S8.
Check whether DE is on) or Anzu, and if WIDE is on, S2
After calling and executing a WIDE subroutine to be described later in step 1, the process returns to S2, and if WIDE is off, the process advances to S22.

Then, in S22, based on the data input in S8,
Check whether the photometry switch 103 is on or not,
If it is not on, return to S4, if it is on, go to S23
Proceed with the process.

Each of the processes up to 522 is a process related to the gist of the present invention, and below, before explaining each process after 323, the mode subroutine of S13, the position E subroutine of 519, and the
The operation of the camera according to the present invention will be explained, including a description of the WIDE subroutine No. 21.

First, refer to the flow diagram of the mode subroutine in Figure 35, and set the route, ZM/C, to call this mode subroutine.
100 (7) CPU c, 51301.1: r wide end flag (wide end is ρ0S= in Figs. 25 and 26)
2: Fo) Reset Fwide to "φ" and then set 88 and S9 in the vine 34 diagram at the next 5131.5132.
Perform the same processing as .

Next, in 8133, based on the data input in 5131, the switching value 11 (
mode) is rLOcKJ tcE Tsuka, r 200MJ
is rMAcRo J, and rLOcK.
” to 5134, rMAcROJ to 5138, r
If it is ZOOMJ, the process proceeds to 5142.

And first, in case of "to rLOc", PO3 at 5134
Check whether the converted result is pos = φ, that is, the position at LOC, and if pos = i, stop the zoom motor 5 at 5135 (in this case, it is in the reverse state, so refer to the rotation control command RCM in Table 3). ), then the 34th
The process returns to 82 in the figure.

If PO8≠Φ, check whether the zoom motor 5 is reversed at 5136, and if it is reversed, immediately return to 5131.
If the zoom motor 5 is not reversed, it returns to 5137 and returns to 5131, where the zoom motor 5 is reversed.

Next, in the case of rMAcROJ, in 8138, 51
The result of PO8 conversion in 32 is pos=c, that is, M
Check whether it is in the ACRO position or not, and if pos=c, stop the zoom motor 5 at 5139 (in this case, it is in the normal rotation state, so refer to the rotation control command in Table 2 today's commercial), and then Return to step 82.

POS5C9 et al. S 140 k:r:C-mo f:- Check whether or not the motor 5 is rotating in the normal direction. If it is rotating in the normal direction, it immediately returns to 5131. If it is not rotating in the normal direction, the zoom motor is switched to 5141. 5 was reversed (return to &5131.

rZOOM"c7), in 5142, 513
The result of PO8 conversion in step 2 is PO8≧A, which means PO8
Check whether ≦1 is 2≦PO8≦9, and PO3
If ≦1, it becomes 5143; if 2≦PO8≦9, it becomes 5153;
PO32: If A, proceed to 5157, respectively.

If PO3≦1, it is checked in 5143 whether the zoom motor 5 is rotating normally, and if it is rotating normally, 814 is checked.
6, and if it is reversed, the process advances to 5144.

5144, a predetermined time t for reasons to be described later.
Perform standby processing that does not proceed with processing by m5ec, and t m
After 5 ec has elapsed, the zoom motor 5 is reversed from reverse rotation to normal rotation at 5145.

Next, in 8146.147, 88 in Figure 34, S
The same process as 9 is carried out, and in 5148 and 5149, the switching value M (mode) by the mode changeover switch 101 is changed based on the data input to 8146.
r ZOOMJ to rLOc” or rMAcROJ
If it has been switched to "rLOCK", return to 5134 and rMAcROJ
If it has been switched to S 1381C, r 200
MJ (7) Mamana et al. Proceed to 5150.

5150 checks whether the result of POS conversion in 5147 is PO2-4, and if PO8≠2, 51
46, and if it is PO8.2, the process proceeds to 5151.

At 5151, the wide end is set to PO8.2, that is, the wide end, so the wide end flag F wide is set to "1", and at the next step 8152, the zoom motor 5 is stopped, and the process returns to 82 in FIG.

If it is checked in 5142 that 2≦PO5≦9, it is checked in 5153 whether or not the WAZOOM motor 5 is rotating in the normal direction.
After jumping to step 56 and stopping the zoom motor 5, the program returns to step 82 in FIG.

Further, when the zoom motor 5 is in reverse rotation, the process proceeds to 5154 to first rotate the zoom motor 5 in the forward direction, and then in the next step 8155, for a predetermined time t m5 for reasons to be described later.
Performs standby processing in which processing does not proceed by ec.

After tm5ec, the process for stopping the zoom motor 5 at 5156 described above is performed, and then the process returns to 82 in FIG.

If PO8≧A is checked in 5142, it is checked in 5157 whether or not the zoom motor 5 is rotating in reverse, and if it is in reverse, the process jumps to 5159, and if it is rotating in forward direction, The process advances to Shun 5159 where the zoom motor 5 is reversed at 5157.

5159.5160, 88 and S9 in Figure 34
5161.5162 performs the same processing as 5148.5149 described above.

If the switching position (mode) by the mode changeover switch 101 remains at r 200MJ, it is checked in 5163 whether or not the zoom motor 5 is in reverse rotation, and if it is in reverse, the process advances to 8164 and the rotation If so, the process advances to 5167.

In the process of 8164, it is checked whether the result of PO3 conversion in 8160 is POS=9, and if PO8≠9, 51
Return to 59, and if POS=9, perform the same processing as 5144.5145 mentioned above at 5165.5166, then
Return to 5159.

In the processing of 8167, the result of POS conversion by 5160 is PO2-4, that is, the tele end (f7 in Fig. 26).
If POS#A, the process returns to 5159, and if it is PO2-4, the zoom motor 5 is stopped in 5168, and then returns to 82 in FIG. 34.

(Left below) Next, referring to the flow diagram of the position E subroutine in Figure 36, when this position E subroutine is called, ZM/C10
0(7) At 5190, the CPU resets the aforementioned wide end flag Fwide to "φ".

Next, at 8191, it is checked whether the PO3 conversion result of 89 in FIG. 34 is POS=A, and if PO2-4, the
Immediately returns to step 82 in the figure, and if POS #A, that is, 2≦PO3≦9 in this case, the process proceeds to 5192, and the zoom motor 5 is rotated in the normal direction.

Then, after performing the same processing as 88 and S9 in the M34 diagram at 5193 and 5194, the PO of 5194 is executed at 5195.
3. It is checked whether the conversion result is PO3.^, that is, the telephoto end. If POS=A, the process jumps to 5197 to stop the zoom motor 5, and then returns to 82 in Figure 34.

In addition, if it is POS #A, it is checked in 8196 whether the zoom switch 102 is still switched to the position E side (ELE ON) based on the data input in S93, and if it is ON, the process returns to 5193. , if E is off, stop the zoom motor 5 at 5197 mentioned above, and then
Return to 82 in Figure 4.

Next, referring to the flow diagram of the WIDE subroutine in Figure 37, when this WIDE subroutine is called, ZM
/C100(7)CP Uha;! Zu52101. mUThe aforementioned wide end flag F wide is F wide=
I, that is, check whether the zoom motor 5 has already stopped at the wide end, and if F wide is 1, immediately return to 82 in Figure 34;
The process proceeds to step 211.

At step 5211, the zoom motor 5 is reversed, and for the reason described later, a predetermined time t m
5ec: Execute standby processing without proceeding with the process.

Then, after t m5ec, the third
88 in Figure 4, the same process as S9, 5215
, checks whether or not the PO8 conversion result of 5214 is PO8.1, and if POS=1, in 5216, P
If O8≠1, the process proceeds to 5223, respectively.

5216.5217 and 5144 in Fig. 35 mentioned above.
．． Perform the same processing as 5145, and then add 5218.5.
At 219, the same processing as 88 and S9 in the above-mentioned figure 34 is performed.

And in 5220, the PO3 conversion result of 5219 is PO
Check whether it is 8.2 or not, and if PO8≠2, return to 8218, and if PO8.2, set the wide end flag F wide! After completing the process of setting r I J and stopping the zoom motor 5, the process returns to 82 in FIG. 34.

If PO2-4 is checked in 5215, proceed to 5223, check whether the zoom switch 102 is still switched to the WIDE side (WIDE on), and if WIDE is on, return to 5213, W
If the IDE is off, the process advances to 5224.

5224.5225.5226 performs the same processing as 5154.5155.5156 in FIG. 35 described above, and then returns to 32 in FIG. 34.

Next, the operation of each process 81 to 522F3 in FIG. 34 and FIGS. 35 to 37 will be explained by dividing the main operations into cases.

(1) When the battery 106j& is stored in the battery case and the hoisting motor control switch 119, release button 99, and zoom switch]02 are not operated at all (a) When the mode selector switch 101 is in the LOCK position, ZM/C100(f) CPU 34
After performing the initial setting process of 81 in the figure, the front lens group L1
On the condition that the rotational position of the cam ring 14 that controls the movement of the rear lens group L2 is PO3=φ,
Each process is repeated in the first loop of S4, S8 to S11, and S2, and no camera operation is performed.If the release button 99 is pressed during this time and the metering switch 103 is turned on, until it turns off
The processes of S2 and S3 are repeatedly executed, and the operation of the release button 99 is ignored.

If the rotational position of the cam ring 14 is PO8≠φ, the third
By the process 512 in Figure 4, the zoom motor 5 is
It is reversed in the direction of =φ, and 5 in Fig. 35
By repeating steps 131 to 5134, 5136, and 5131 and processing 5135, the zoom motor 5 is adjusted so that the rotational position of the cam ring 14 stops at pos = φ.
When the rotation of is controlled and PO8=φ, the process returns to the first loop described above.

(b) When the mode change switch 101 is switched from the LOCK position to the 200M position, the CP of ZM/C100
U is extracted from the first loop described above and proceeds to 514. At this time, since pos = φ, the zoom motor 5 is rotated forward by the process of S17, and 5130-3133.5142 in FIG. Sutra, 5143.51
Proceed with the process with 46.5147, and at 5148.5149, set the mode selector switch 101 or LOC to MAC.
RO rank 5150 on the condition that it is not cut into 100.
．． Wait for POS=2 in the loop from 8146 to 5149, and when it becomes PO2-4, 5151@ and then 5152
After stopping the zoom motor 5 at , the process returns to 82 in FIG.

That is, in this case, the rotation stop position of the cam ring 14 is at the wide end (P
The ZM/C100 (7) CPU, which becomes OS 2), returns to S2 and executes S4, S8 to 510.514, S15, on the condition that no camera operation is performed after
S18, S20. Each process is repeated in the second loop of S22 and S4.

(C) With the cam ring 14 stopped at the wide end, set the mode selector switch 101 to about 200M or 6 position A.
When switching to CRO position, ZM/C100 CPU
is out of SIO from the second loop mentioned above, and S1
Proceed to step 6. Since PO3.2 is at this time, the zoom motor 51F! : Along with forward rotation,
S in FIG. 35] Repeat processing of 31 to 5133, 5138.5140.5131 and 5
139, the rotational position of the cam ring 14 is set to po.
The rotation of the zoom motor 5 is controlled so as to stop at s=c, and when pos=c, the process returns to 82 in FIG. 34, and from then on, on the condition that no camera operation is performed, S4.5
8-510. Each process is repeated in a third loop of S16, S22, and S4.

(d) Mode changeover switch 101 tMAcRO position 1
When switching to 1 or 1200M position, ZM/C10
CPU 0 exits 510 from the third loop described above and proceeds to 814. At this time, since pos=c, S
14, through S15, the zoom motor 5 is reversed through the process of S12, and through 5131 to 5133.5142 in FIG. 35, 5157.5159.51
60 and proceed with the process. At 5161 and 5162, the mode selector switch 101 is set to LOC or MACR.
8163. provided that it is not switched to the O position. 5164. In the loop from 5159 to 5163, first POS=
9, and when POS=9, a process of waiting for tm5eC is performed at 5165, and a process of rotating the zoom motor 5 from reverse rotation to normal rotation is performed at 8166.

The reason for processing 5165 and 5166 here is as follows.

In other words, when switching from the MACRO position to the ZOOM position, move the cam ring 14 from the POS/9 side to the PO2-4 side.
It is stopped in the first round when it enters, but from pos=^ to POS・
M became 9? If the zoom motor 5 is reversed from reverse rotation to normal rotation and stopped at POS=A, the zoom motor 5 can be stopped without removing the disc brakes and ν-shuts such as gears in the drive transmission system that are provided in the zoom motor 5. There is sex. However, by further rotating the zoom motor 5 in the reverse direction for t m5ec when POS=9, it is possible to gain the time required to return to POS=A, and then rotate the zoom motor 5 in the normal direction. PO2 with bank crash removed
It can be stopped at -4.

And after processing 8166, 5159 to 5163.51
Wait for pos=A in the loop of 67.5159,
When POS=A, the zoom motor 5 is stopped at 5168 and the process returns to 82 in FIG.

That is, in this case, the rotation stop position of the cam ring 14 is at the telephoto end (P
OS=A).

fc; In the case of Oko (7), ZM/C100 (7) CP
After returning to 82 as in (b) above, U repeats each process in the second loop described above on the condition that no camera operation is performed.

Also, when switching from this MACRO position to the ZOOM position, when proceeding from 5142 to 5157, in addition to the above case, 5131 to 5133.5138.5140.514
1. Cam ring 14 is PO8 during loop processing of 5131
≧When in the position corresponding to A, press the mode selector switch 1.
This can also occur when 01 is switched to the ZOOM position.

However, in this case, the zoom motor 5 which is currently rotating in the normal direction is reversely rotated in the process of 8158.

(e) Set the mode selector switch 101 to ZOOM (!) with the cam ring 14 stopped at the telephoto end (POS=A).
When switching from 711 to MACRO, the process is similar to (C) above, except that the starting point is POS=A instead of POS2.

(f) Item 36 in the explanation of (b) to d) above.
By checking 5148.5149.5162.5163 in the figure, the mode selector switch 101 is changed from the ZOOM position to L.
When it is checked that it has been switched to the OCK position or the MAC:RO position, 513 for the LOCK position.
5136.5137.8131 to 513 mentioned above from 4.
Through the loop processing of 4 and the processing of 5135, the cam ring 14 stops at pos = Φ, and in the case of MACRO, the cam ring 14 stops at 8
From 138, the cam ring 14 is processed by the loop processing of 5140.5141.
stops at pos=c.

(9) 5131 to 5133.5138.51 in Figure 35
40.5141.5131 and when the cam ring 14 is in a position corresponding to 2≦PO3≦9, or 5131 to 5137. in FIG. 5131 is in loop processing and the cam ring 14 is 2≦
When the mode selector switch 101 is in the position corresponding to PO8≦9 and is switched to ZOOMu
100(1) CPU exits the above loop from 5133 and advances the process to 5142.

In this case, since 2≦PO8≦9, the process advances to 5153, and when the zoom motor 5 is rotating in the forward direction, the process jumps from 5153 to 5156 and immediately stops the zoom motor 5, and when the zoom motor 5 is rotating in the reverse direction, the process jumps to 5156. , proceeds from 5143 to 5154, first rotates the zoom motor 5 from reverse to forward rotation, waits for a time tm5ec to remove backlash on the forward rotation side, and then stops the zoom motor 5 at 8156. .

That is, when 2≦PO3≦9, the rotational stop position of the cam ring 14 is an arbitrary position where the focal length shown in FIG. 26 is any one of fO to f7.

When the naori ring 14 is in the position corresponding to 2≦PO3≦9, the mode changeover switch 101 is turned on.
711 may depend on the operating specifications of the zoom switch 102, which will be described later, in addition to the above.

(h) In the loop process from 5131 to 5136 and 5131 in FIG. 35, when the mode changeover switch 101 is switched from the LOC position to the ZOOM position while the cam ring 14 is in the position corresponding to PO8/1, ZM/C: 100(
7) CPU goes from 5133 to 5142.5143 to 5
The process proceeds to step 144.

In this 5144 and the next 8145, the same processing as in 5165 and 5166 described above is performed.

In other words, from such a LOCK position, 200M4t11
When switching to t, the cam ring 14 is stopped immediately after entering PO8/2 from the PO8/1 side, but
If the zoom motor 5 is reversed from reverse to normal rotation immediately after PO4-1 and stopped at PO8.2, the zoom motor 5 will rotate without removing the backlash of the gears of the drive transmission system in the zoom motor 5. may stop. However, by further reversing the zoom motor 5 during t m5ec, we can buy time to return to PO3.2.
Thereafter, by rotating the zoom motor 5 in the normal direction, the zoom motor 5 can be stopped at PO3.2 with the normal rotation side balaclinch removed.

(2) ZM/C100 (7) While the CPU is executing loop processing such as the above-mentioned first loop or second loop,
When the hoisting motor control switch 119 is operated, the movement prohibition signal DIS is turned on, so the C of ZM/C100 is
The process proceeds from 54 to 85 in Figure 34. Then, in this S5, the power hold signal PH is turned on (
output), the MC/U 109 is permitted to rotate the hoisting motor 111, and in response to this, the CPU of the MO/LJ 109 starts controlling the rotation of the hoisting motor 111.

Then, MC/U1o9 ends the control of the hoisting motor';1111 and outputs the zoom motor operation prohibition signal DIS! When f is turned off, the ZM/C100 (7) CPU advances the process from S6 to S7, turns off the power hold signal PH, and returns to S2.

Note that by branching from the first and second loop processing described above to steps 84 to S7, operation of the zoom motor 5 is prohibited while the hoisting motor 111 is in operation, and the photometry switch 1 is
03 and release switch 123 are also ignored.

Each processing IF! : Zoom switch 1 while running
02 is operated to the E side, the ZM/C 100 (7) CPU advances the process from S18 to 319 in FIG. 34, and calls and executes the TεLE subroutine shown in FIG. 36.

First, after resetting the wide end flag F wide to "small" at 5190, if the rotation stop position of the cam ring 14 is at the telephoto end with PO3=A, there is no need to rotate the zoom motor 5, so immediately turn to 82 in FIG. Return to , except for the tele end (when this position E subroutine is called, 2≦P
O8≦9), then the boar rotates the zoom motor 5 forward at 5192, and on the condition that the zoom switch 102 is not returned from the position E side to the neutral position in the loop of 5193 to 5196.5193. Wait until the rotational position of the cam ring 14 becomes POS=A, and when POS=A, the process to stop the zoom motor 5 is completed at 5197.
Return to

When the cam ring 14 is operated to the 102% position E side in this way, the cam ring 14 will stop at the telephoto end if the position E operation is maintained.

However, if the zoom switch 102 is released on the way to the telephoto end and returns to the neutral position, 5196 to 519
7, the zoom motor 5 is immediately stopped. That is, by returning the zoom switch 102 from the ELE side to the neutral position at the required timing, the cam ring 14 is
Any position (any focal length) corresponding to ≦PO8≦9
It can be stopped with .

(4) ZM/C100 (7) While the CPU is executing each process of the above-mentioned Kanji loop, the zoom switch 1
02 to the WIDE side, the ZM/C100 (7) CPtJ advances the process from 920 in FIG. 34 to S21 and calls and executes the WIDE subroutine shown in FIG. 37.

First, the wide end flat t jig F wide is 5210.
1", and if it is F wide*I, the rotation stop position of the cam ring 14 is at the wide end of PO3.2, and there is no need to rotate the zoom motor 5, so immediately return to 52 in Fig. 34. , if Fwide=small, zoom motor 5v with 5211! Reverse it.

Then, at 5212, a process of waiting for a time t m5ec is performed, but this is because if the zoom switch 102 is returned to the neutral position immediately after being operated to the WIDE side, the reverse operation valve of the zoom motor 5 becomes uncertain. This is because the backlash removal operation according to 5224 and 5225 may become ineffective due to the reverse operation valve.

After processing 5212, 5213-5215.5223.5
In the loop of 213, on the condition that the zoom switch 102 is not returned to the neutral position from the WIDE side, the cam ring 1
Wait until the rotation position of 4 becomes PO2-4, then turn to PO8.
・If it becomes 1, at 5216.5217, the above-mentioned 5
In addition to performing the same processing as 165.5166,
18-8220. Perform the loop processing of S21 B,
Wait for PO8/2 while removing backlash.

And when it comes to the wide end which is PO8.2, it is 5221
After setting the wide end hula jig F wide to "1", stop the rotation of the zoom motor 5, and then set the 34th
Return to 82 in the figure.

When the zoom switch 102 is operated to the eWIDE side in this manner, the cam ring 14 will stop at the wide end if the WIDE operation is maintained.

Of course, if the zoom switch 102 is released on the way to the wide end and returns to the neutral position, the range will change from 5223 to 5.
5154.51 in Figure 35 mentioned above in 224.5225
The zoom motor 5 is stopped at 8226 through backlash removal processing similar to step 55. That is, by returning the zoom switch 102 from the HOE side to the neutral position at the required timing, the cam ring 14 is adjusted so that 2≦PO
It is possible to stop at an arbitrary position M (arbitrary focal length, It) corresponding to 8≦9.

Finally, the processing after S22 in FIG. 34 will be explained.

ZM/C100 (7) While the CPU is executing each process of the second loop described above, operate the release button 99 to turn on the photometry switch 103 (however, if the winding morph control switch 119 is not turned on) fcL is the condition) and
The ZM/C100 (7) CPU advances the process from S22 to S23 and thereafter.

First, in S23, the power hold signal PH is turned on,
In order 324 to operate MC/U 109, MC
/U By checking whether the zoom motor operation inhibition signal DIS from 109 is on or not, the MC/U
Check whether 109 is activated, and if it is confirmed, send the PO8 conversion result of S9 to MO/LJ in S25.
In order to serially transfer it to the MO/U 109, the PO8 conversion result (zoom code data) is set to the output register, and the set data is transferred to the serial signal SOf in synchronization with the clock CLKr from the MO/U 109. /u Serial transfer to 109.

Then, in step 926, the process waits for the transfer process to be completed, and when the transfer process is completed, the process advances to S27.

In S27, wait for the serial signal SI carrying the switch check/operation completion data to be input from the MC/LI T O9, and when the serial signal SI is input, 32
The input data is checked in step 8.

The input data is operation end data (power hold-off request data) εN indicating the end of the operation of the MC/U 109.
If O, use S29, photometric switch 5WS
C) LOCK the mode selector switch on IKl et al. S31.
If the check data is LOCKC)l, the process advances to S34.

At S29, the power hold signal PH is turned off because the operation of the MC/UIQ 9 has ended, and at S30, the zoom motor operation prohibition signal S from the MC/U 109 is turned off. After confirming what you have done, return to S2.

In S31, the power hold signal PHt is temporarily turned off in order to notify the MC/U 109 whether the photometry switch 103 is on or not, and in the next S32, each switch/ν switch data is input.

Then, in S33, it is checked whether the photometry switch 103 is turned on based on the data inputted in S32, and if it is not turned on, it is waited for the zoom motor operation prohibition signal DIS to turn off in S30, and then the process goes to S2. return.

That is, when the photometry switch 103 is off, the power hold signal PH@ turned off in the process of S31 becomes effective.

Further, if the photometry switch 103 is on, it is checked in S36 whether the mode changeover switch 101 is switched to the LOCK position 1 based on the input data in S32, and if it is switched to the LOCK position, , since there is no need to notify that the photometry switch 103 is on,
The process returns to 82 via 830 described above.

If the mode selector switch 101 has not been switched to the LOCK position, the power hold signal PH is set in S37.
is turned on again and the process returns to S27.

That is, when the CPU of zM/Cl0o is asked by the MC/U 109 whether the photometry switch 103 is on or not, if the photometry switch 103 is on, the CPU of zM/Cl0o turns on or off the power hold signal PH to indicate that the photometry switch 103 is on. Let me know.

Finally, in S34 to S37 and S30, the photometry switch 10
In the same way as in case 3, the mode selector switch 101 is set to L.
The position has been switched to OC, but it is not 'fr MC/
U 109 Nichirasel.

7Jo above S23~S37 Odor, ZM/C1
Zoom code data (PO8 conversion result) transferred from 00 to MC/U 109 and photometry switch 103 (7
)t:/data1. t, MC/U 1091. J3 is used as follows.

The zoom code data is an aperture M that changes depending on the magnification position.
It is used as data representing the F value for variable control of the shirt tab 0tsuri 23, and is also used as data representing the F value.
pos=c, which represents the position M, indicates that the display device 1
The display in the finder at 15 is lit to give a warning to the photographer, and at this time, the control is performed to ignore the operation of the release switch 123.

Also, the oscillator data of the photometry switch 103 is
21 is used for startup control.

In the above embodiment, the regulator 105° is operated unconditionally when the battery 101 is stored in the battery case. It is also possible to interpose the ZM/C 100 so that the operation of the ZM/C 100 is started by turning on this manual switch by the photographer.

"Effects of the Invention" As described above, the autofocus lens shutter type camera of the present invention is equipped with a zoom lens, and uses a single zoom motor as a driving source in conjunction with the zooming operation of the zoom lens. The viewfinder field of view and strobe illumination angle change.

Therefore, although it is a lens-shutter type camera, it is possible to obtain a lightweight and compact camera that has the same functions as an autofocus single-lens reflex camera equipped with a zoom lens. Furthermore, the present invention further adds a macro photography function, and during macro photography, a means for correcting parallax in the finder optical system and a means for improving short-range distance measurement of a distance measurement device based on the triangulation principle are provided. means and
Since it is equipped with means for changing the irradiation angle of the strobe device, macro photography can also be performed fully automatically. Therefore, if you are a serious user, you can provide an extremely complete lens-shaft type camera that can perform almost any type of depiction with just one camera.

[Brief explanation of drawings]

FIG. 1 is a conceptual perspective view of the main elements showing an embodiment of the lens-shutter camera of the present invention. 3 is a plan view of FIG. 2, FIGS. 4 and 5 are sectional views taken along lines rV-X and V-V of FIG. 2, respectively. Figure 6 is a longitudinal sectional view of the lens barrel block, Figure 7 is a developed view of the cam ring's front group cam groove and the rear group cam groove, Figure 8 is an exploded perspective view of the lens barrel block, Figure 9, M2O view are the open state of the barrier block, respectively.
Front view in closed state, Figure 11 is a conceptual diagram of a distance measuring device based on the triangulation principle, Figure 12 is a conceptual diagram of the distance measuring device of Figure 11 with a short distance correction optical element inserted, M2S diagram is an enlarged view of the short distance correction optical element in Fig. 12, Fig. M14 is a front view of the same, Fig. 15 is a plan view of the cam plate portion of the finder block, and Fig. 16 is a cross section taken along line XVI-XVI in Fig. 15. Figure 17 is a rear view of Figure 15, Figure 18 is a plan view of Figure 15 with the cam plate removed, Figure 19 is a front view of Figure 18, Figure 20 is XX of Figure 7g19. - A cross-sectional view taken along line XX, Figure 21 is a cross-sectional view of the operating state shown in Figure 20, and Figure 22 is a longitudinal cross-sectional view of the deflection prism when it is inserted in Figure 21, with the deflection prism operating plate removed. 23 is a front view similar to FIG. 19 showing the state when the deflection prism is inserted, 24 is a sectional view taken along the line XXrt/-XXrV in FIG. 23, and FIG. FIG. 26 is a developed view showing the correspondence relationship between the land of this code plate and each cam groove, FIG. 26 is a diagram showing the zoom code by the code plate of FIG. Figure 29 is a front view, rear view, and plan view showing an example of the arrangement of each operation switch of the camera of the present invention, and Figures 30 and 31 are diagrams showing the relationship between the mode changeover switch and the macro button in different operating states. 32 is a block diagram showing the control system of the camera of the present invention, FIG. 33 is a drive circuit diagram of the zoom motor, and FIGS. 34 to 37 are flow diagrams showing the operation of the camera of the present invention. DESCRIPTION OF SYMBOLS 1... Lens barrel block, 2... Finder and strobe block, 3... Light emitting part, 4... Light receiving part, 4
e--Near distance correction optical element, 5--Zoom motor, 7-- Binion, 11--Ling 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...shaft block,
25... Helicoid, 3o... Barrier block, 5
3...Cam plate, 54-...Finder block, 55
...Magnification cam groove, 54... Parallax correction cam groove, 57... Strobe cam groove, 58... Xenon lamp, 63.64.65... Guide groove, 66-... Magnification change Lens frame, 67... Deflection prism operating plate, 68-...
Strobe case, 66a, 67a, 68a--Guide protrusion, 69.70.71--Followed pin, 76--Position regulation piece, 90--Code plate, 92--Brush, 9
9...Release button, 100-Zoom motor control unit, 101-...Mode selection switch,
102--Zoom switch, 103--Photometering switch, 104--Zoom encoder, 109--Main control unit, 107--Zoom motor drive circuit, 1 to L 6--Lens, ρ1. ...Declination prism. Figure 1 Figure 4 Figure 5 l-01÷62-+-63-1 Figure 8 Figure 18 Figure 19 Figure W2 Figure 24 Figure 27 Figure 28 Figure 33 Figure 36 @

Claims (3)

[Claims] (1) A distance measuring device, a photographing optical system driven according to a distance signal from the distance measuring device, a finder optical system consisting of an optical system different from the photographing optical system, and a strobe device. In the lens-shutter camera, the photographing optical system includes a zoom lens system that continuously changes the focal length, and the finder optical system and strobe device include:
It consists of a variable magnification finder optical system and a variable illumination angle strobe device that change the field of view and strobe illumination angle in conjunction with changes in the focal length of the zoom lens system, and the zoom lens system, the variable magnification finder optical system, and A lens shutter type zoom lens camera characterized in that a variable illumination angle strobe device is driven by a single zoom motor. (2) A distance measuring device, a photographing optical system driven according to a distance signal from the distance measuring device, a finder optical system consisting of an optical system different from the photographing optical system, and a strobe device. In the lens-shutter type camera, the photographic optical system has a macro photographing function that can continuously change the focal length and further extend part or all of the lens system from one focal length end. The finder optical system changes the field of view in conjunction with changes in the focal length of the zoom lens system, and bends the finder optical axis in the direction of the optical axis of the photographic optical system in the macro photography area. It consists of a variable magnification finder optical system with an optical element that corrects parallax.
The above-mentioned strobe device consists of a variable illumination angle strobe device that changes the strobe illumination angle in conjunction with changes in the focal length of the zoom lens optical system and transition to the macro shooting range, and these zoom lens systems and variable magnification finder optical systems. , and a variable illumination angle strobe device are driven by a single zoom motor. (3) A distance measuring device, a photographing optical system driven according to a distance signal from the distance measuring device, a finder optical system consisting of an optical system different from the photographing optical system, and a strobe device. In the lens-shutter type camera, the photographic optical system has a macro photographing function that can continuously change the focal length and further extend part or all of the lens system from one focal length end. The finder optical system changes the field of view in conjunction with changes in the focal length of the zoom lens system, and bends the finder optical axis in the direction of the optical axis of the photographic optical system in the macro photography area. It consists of a variable magnification finder optical system with an optical element that corrects parallax.
The above-mentioned strobe device consists of a variable illumination angle strobe device that changes the strobe illumination angle in conjunction with changes in the focal length of the zoom lens optical system and transition to the macro shooting range, and furthermore, the above-mentioned distance measuring device is based on the triangular distance measurement principle. A distance measuring device based on the above, which is equipped with a short distance correction optical element that bends the distance measuring light beam and optically extends its baseline length in conjunction with the transition of the zoom lens system to the macro shooting range, and a lens-shutter zoom lens camera characterized in that the zoom lens system, the variable magnification finder optical system, the variable illumination angle strobe device, and the short-distance correction optical element of the distance measuring device are driven by a single zoom motor. .