JP2934762B2 - Camera optical system moving device - Google Patents

Description

Description: TECHNICAL FIELD [0001] The present invention relates to an optical system moving device of a camera in which a lens barrel having a photographing lens is movable in an optical axis direction with respect to a camera body.

2. Description of the Related Art Some cameras move an optical system in the direction of an optical axis in order to enable short-distance shooting, adjust the focus of a shooting lens, or change the focal length.

As a device for moving the optical system, for example, a helicoid system in which the optical system moves straight by rotating a male helicoid or a female helicoid is used, but there are also cam systems and link systems.

Further, as a method for moving another optical system, there is a zoom lens system for changing a focal length by moving a lens group.

[Problems to be Solved by the Invention] By the way, in the former helicoid method, the shape of the lens barrel provided with the photographing lens is mechanically limited to a round shape, and a free shape cannot be adopted. . Also, in the helicoid colloidal method, it is necessary to increase the screw lead in order to obtain a large lens movement distance within one rotation of the focus adjustment ring. On the other hand, the height of the screw needs to be as low as possible. This process is not easy to use, but as the optical system is moved forward, the lens protrudes from the helicoidal fitting part and holds the optical axis of the optical system perpendicular to the image plane. Since it is difficult to perform the operation, the moving distance of the optical system is also limited.

The cam system and the link system also have complicated mechanisms, and require time and labor for processing and assembly.

The latter zoom lens system has a problem that the number of components of the mechanism for moving the lens group is large, the structure is complicated, and the lens barrel becomes large accordingly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to accurately and linearly move a lens barrel by a simple mechanism with a small number of parts and a sufficient distance, and to make the lens barrel an arbitrary shape. It is an object of the present invention to provide an optical system moving device of a camera that can easily secure a space for mounting a shutter, an aperture, and the like, and can reduce the size and cost of the camera.

[Means for Solving the Problems] In order to solve the problems and achieve the object, the present invention is configured as follows.

According to an aspect of the present invention, there is provided a camera in which a lens barrel including a photographing lens is movable in an optical axis direction with respect to a camera body, so that all photographing lenses of the camera do not move with respect to the lens barrel. One drive shaft and one guide shaft fixed to the lens barrel, arranged in parallel with the optical axis, and having an inter-axis distance set within a distance between the optical axis and the outer shape of the lens barrel. Wherein the lens barrel is supported movably in the optical axis direction. ].

According to the first aspect of the present invention, the distance between the drive shaft and the guide shaft is set within the distance between the optical axis and the outer shape of the lens barrel, and the distance between the shafts is set short. It is easy to ensure the parallelism with the axis, the rotation of the lens barrel is suppressed,
Even if the degree of parallelism is somewhat low, the influence of the gap or the like of the screwing drive mechanism is absorbed, and the movement of the lens barrel is often hindered.

The lens barrel is movably supported in the optical axis direction by one drive shaft and one guide shaft with respect to the camera body,
The rotation of the drive shaft causes the lens barrel to move by screwing on the axis, so that a sufficient moving distance of the lens barrel can be secured, the drive mechanism is simple and small, and the rotation of the lens barrel is stopped. Therefore, the number of parts can be reduced by omitting other guide shafts and mechanisms such as bearings provided in the camera, and the size and cost of the camera can be reduced.

Further, the shape of the lens barrel is not limited, and it is easy to secure a space for mounting a shutter, an aperture, and the like on the lens barrel.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 6 show a camera to which the present invention is applied. FIG. 1 is a front view of the camera, FIG. 2 is a rear view thereof, and FIG.
FIG. 4 is a plan view, FIG. 4 is a left side view of FIG. 3, and FIG.
6 is a sectional view taken along the line VI-VI of FIG. 1, FIG. 7 is a view showing a viewfinder display, and FIG. 8 is a view showing a back cover display.

Configuration of Camera Body This camera includes a main body 10, a front cover 20, a decorative panel 30, and a back cover 40, each of which is formed of a synthetic resin. A decorative panel 30 is engaged with the front side of the front cover 20, and the front cover 20 is engaged and screwed so as to cover the main body 10. The back cover 40 and the battery cover 41 are integrally attached to the bearing portion 42a of the main body mounting body 42 via the hinge shaft 43.The main body mounting body 42 is engaged with the main body 10, and further fixed with screws. I have. The back cover 40 is opened and closed by a back cover opening / closing knob 11 provided on the main body 10. The battery cover 41 has a battery escape portion 41a
Are formed, and a concave portion 41b is formed on a side portion of the battery lid 41.
Are formed. The battery lid 41 is closed by engaging the side with the main body 10, and can be opened with a fingertip against the recess 41b on the side.

On the side of the front cover 20, the strap attachment 12 is provided near the concave portion 41b of the battery lid 41.

The front cover 20, the decorative panel 30, the back cover 40, and the battery cover 41 are formed so that the entire peripheral surface constituting the camera is curved, and furthermore, the portion protruding from the side surface of the camera is minimized to improve the feel.

An unexposed film accommodating chamber 14 and an exposed film accommodating chamber 15 are formed in the main body 10 with an image frame section 13 interposed therebetween. In the unexposed film accommodating chamber 14, the patrone 1 is accommodated and the exposed photographic film F is exposed. Is wound on a reel 16 provided in the exposure film storage chamber 15.

A front base plate 17 is provided at the center of the main body 10, and a lens barrel frame 22 having a photographing lens 50 is provided on the front base plate 17.
It is provided so as to be movable in the optical axis direction integrally with 51, and collapses.

Photographing Lens The photographing lens 50 is composed of four groups and is composed of four lenses. The photographing lens 50 is mounted on the lens barrel 22 via supports 52 and 53, and the lens barrel 22 is mounted on the lens barrel 51. The focal length of the taking lens 50 is set to 35 mm, and the brightness is set to F3.5.

The taking lens 50 has a shutter 54 between the lenses.
The three lenses 50a, 50b, 50c are formed of glass, and one lens 50d on the photographic film side is formed of aspherical plastic.

Viewfinder mechanism The viewfinder mechanism is provided at the upper center of the camera body, and uses an Albada-type bright frame see-through viewfinder.

The viewfinder 60 is provided with a display as shown in FIG. 7, and includes a photographing range frame 61, 62 and an AF frame 63, and also displays a distance measurement completion (lighting) and a distance warning (flashing).
64, a close-up mode (lighting) display 65, a plitz mark 66 and the like are provided.

Focus Adjustment Mechanism The focus adjustment mechanism changes the distance between the taking lens 50 and the photographic film surface in accordance with the distance to the subject, and adjusts the focus so that an image of the subject is correctly formed on the film surface.

Projection AF lens 7 as a distance measurement mechanism for this focus adjustment
0, a light-receiving AF lens 71 is provided above the front base plate 17, is covered with AF windows 72 and 73 of the decorative panel 30, and employs infrared non-scan active type automatic ranging. The shooting distance range is 0.6 m to infinity for normal shooting and 0.35 m to 0.6 m for close-up shooting.

When the lens barrel 51 holding the photographing lens 50 is extended, the lens group is driven straight to adjust the focus. Release button 2
Focus lock is possible by half-pressing the
Displays the completion of distance measurement within.

By operating the close-up button 3, close-up shooting can be performed, and when the close-up button 3 is further operated, switching to normal shooting is performed. A power button 4 is provided near the close-up button 3.

Shutter mechanism The shutter mechanism has a function of temporally providing a necessary exposure amount to the photographic film and a function of blocking unnecessary light except for the exposure time.

The shutter motor 80 is driven by the operation of the release button 2 to open and close the shutter 54, and the shutter 54 is controlled by a programmed shutter method. In addition, an electromagnetic release is adopted, and the shutter speed is continuously variable from 1/3 second to 1/500 second. Furthermore, a self-timer is used, and a shooting mode switching button S1 is used.
Is set, and the operation is started by the operation of the release button 2,
The operation time is about 10 seconds, and during operation, the light emitting diode lights up for about 7 seconds and blinks for about 3 seconds. After one shot, the mode is restored to the automatic light emission mode.

The shutter 54 is locked when the lens barrier is closed, the power supply voltage drops, the strobe is not charged, and the subject distance is out of the photographable distance range.

Automatic exposure mechanism In order to give an appropriate exposure to photographic film, the exposure is adjusted by measuring the brightness of light on the object side that fits on the screen. A CdS (cadmium sulfide) light receiving element 90 is used to convert an electric signal according to the amount of incident light. The light receiving element 90 is attached to the front base plate 17 and is covered with the AE light receiving window 91 of the decorative panel 30. The exposure control interlocking range is film sensitivity ISO100, subject brightness EV
The value is in the range of 5 to 17, and the EV value of 9 or less is automatically switched to the automatic flash emission.

This camera uses a patrone film with a DX code.When photographic film is inserted into the camera, the film sensitivity is automatically set to ISO 50-3200,
All X films are automatically set to a sensitivity of ISO100.

Strobe Mechanism In this strobe mechanism, a flash tube 100 is fixed above the unexposed film chamber 14 of the main body 10 and is covered with a flash window 101 of the decorative panel 30.

The strobe mechanism automatically emits light when the brightness is low, and is of an automatic charging type. The capacitor 7 of the charging circuit is arranged close to the exposure film storage chamber 15 of the main body 10.

Film Winding Mechanism In this embodiment, the built-in motor 11
0 automatic winding system is used, and the winding unit 111
The automatic loading method is started by operating the release button 2 after the back cover 40 is closed. In the case of an auto load error, the display of the film counter “0” of the shooting information display unit 122 described later flashes, and the film feeding mark flashes. When the last frame is shot, it is automatically rewound.

Film rewinding mechanism The film rewinding mechanism automatically rewinds when the photographing of the last frame is completed, and stops automatically when rewinding is completed. With two operations of the shooting mode switching button S1 and the release button 2, rewinding from the middle can be performed.

Rewinding decrements the film counter and displays the film feed mark in the reverse direction.

In the case of DX film, the leading edge of the film is wound into the patrone, and then the rewinding stops automatically. In the case of non-DX film, the leading edge of the film is not wound in the patrone, and the rewinding stops automatically.

Back cover The back cover 40 uses a screw-type opening and closing, and is an automatic lock. The back cover 40 has a control display section 12 for auto date and shooting information.
0 is provided via a back cover base plate 44, and a film checking window 6 is further formed.

An LCD panel 130 is attached to the back cover 40.
The D display panel 130 is provided with a date display unit 121 and a shooting information display unit 122. Further, there are provided a photographing mode switching button S1 and a date mode switching button S2, a correction point selection button S3 for selecting a correction point for the date, hour and minute, and an addition button S4 for adding a date display.

A crimping plate 46 is provided inside the back cover 40, and a tunnel gap is formed between the crimping plate 46 and a film rail formed on the main body 10 so that the photographic film can travel.

One 3V lithium battery 8 is stored in the battery compartment 18 of the power supply body 10 and can be replaced by opening and closing the battery cover 41 by the user. Further, one 3V button battery 9 that functions as an auto date function and also functions as a backup power source for the main power source is stored in the battery storage unit 45 of the back cover 40.

Automatic date A digital clock of a liquid crystal display is built in the control display unit 120 as an automatic date, and the date display unit 121 provided on the LCD unit decorative plate 130 of the back cover 40 displays “date”, “date”, and “date”. , "Day / month / year", "date / time / minute" or "OFF mode" are switched and displayed, respectively, and the date mode switching button S2 described above, a correction location selection button S3 for selecting a correction location of the date, hour and minute, and a date display, respectively. Is adjusted by operating the addition button S4 for performing the addition. Further, date imprinting is performed by the date imprinting section.

Photographing Information Display As shown in FIG. 8, the photographing information display section 122 of the back cover 40 is provided with a battery display 122a, a film counter 122b, and a film feed display 122c. In addition, the flash charging 122d, the self-timer mode 122e, the automatic flash mode 122f, the forced flash mode 122g, and the non-flash mode 122h are switched and displayed.

Optical System Driving Device for Camera Next, the optical system driving device for the camera will be described in detail with reference to FIGS. 9 to 15.

9 is a view showing a lens barrel drive mechanism and a shutter drive mechanism, FIG. 10 is a view showing a lens barrier opening / closing mechanism, FIG. 11 is a sectional view taken along the line XI-XI of FIG. 10, and FIG. FIG. 9 is a sectional view taken along the line XII-XII of FIG.
II is a sectional view, FIG. 14 is a sectional view taken along the line XIV-XIV of FIG. 9, and FIG. 15 is a sectional view taken along the line XV-XV of FIG.

As shown in FIGS. 11 and 12, a support frame 21 is provided on the front base plate 17, and a lens barrel 51 is provided on the support frame 21 so as to be able to advance and retreat in the optical axis direction. I do. The lens barrel 51 is formed in the shape of a rectangular tube, and the lens barrel frame 22 is fixed, and both operate integrally. The lens barrel 51 has a photographing window 55 on the front side, and the photographing window 55 is covered with a lens barrier 140 to protect the photographing lens 50 inside.

As shown in FIG. 10 to FIG. 12, the lens barrier 140 is composed of two divided barriers 141 and 142, and is supported by the lens barrel 51 by a barrier pressing plate 143 provided inside the lens barrel 51.
A pair of rails 56 formed on the lens barrel 51 are slidable. At the upper end of the dividing barrier 141 arranged on the front side,
A protrusion 141a that slides on the rail 56 and also protrudes to the rear side, a protrusion 141b that slides on the rail 56 and a protrusion 141c that protrudes forward are formed at the lower end, and the protrusion 141c is formed on the lens barrel 51. Slides in the groove 51a. Split barrier 1 arranged on the rear side
A protrusion 142a is formed on the upper end of the 42, and a protrusion 142b is formed on the lower end thereof so as to slide with the rail 56. When closing the lens barrier 140, first, the divided barrier 142 moves upward, and the projection 142b abuts on the projection 141a of the divided barrier 141. The trunk window 55 is covered. Projection 141c of split barrier 141
Slides in the groove 51a, and when the lens barrier 140 is completely closed, it has a dimensional relationship in which it contacts the upper end 51b of the groove 51a. The movement of the dividing barrier 141 further prevents the lens barrier 140 from being half open. On the other hand, when opening the lens barrier 140, the projection 14 of the divided barrier 142 is used.
2a abuts on the projection 141a of the divided barrier 141 and interlocks and opens. As shown in FIGS. 10 and 12, the divided barriers 141 and 142 are stored so as to be stacked below the imaging window 55 of the lens barrel 51.

A pin 144 is formed on the rear divided barrier 142, and the pin 144 is provided with a bearing metal 145. A forked engaging portion 146a formed at the tip of the barrier opening / closing lever 146 is engaged with the bearing metal 145.
The base 146b is rotatably supported by a support pin 147 via a bearing metal 148. This support pin 147 is provided on the back side of the lens barrel 51.

An operating pin 149 is provided on a base 146b of the barrier opening / closing lever 146, and a spring 151 is provided between the operating pin 149 and a locking piece 150 provided on the barrier pressing plate 143. With the spring 151, the lens barrier 140 is always urged in the closing direction, and the divided barrier 142 abuts against the stopper 152 provided on the front inner side of the lens barrel 51.
The photography window 55 is closed. Split barrier 142 is stopper 152
, Light is shielded between them, and also between the divided barriers 142 and 141, light is shielded by overlapping the ends.

A support pin 147 provided on the barrier opening / closing lever 146 is operated by a cam mechanism A including a barrier drive lever 153 and the like.
The opening / closing operation by the cam mechanism A allows the mechanism linked to the photographing lens 50 to be simplified.

A cam pin 155 is provided at an end 153a of the barrier drive lever 153, and the cam pin 155
Move in the cam groove 156 formed in accordance with the operation of the lens barrel frame 22, whereby the barrier drive lever 153 rotates.
The bent end 153b of the barrier drive lever 153 contacts the operating pin 149 of the barrier opening / closing lever 146, and the barrier drive lever
The lens barrier 140 is opened and closed by the rotation of the 153. As shown in FIGS. 11 and 12, the cam groove 156 is formed by inserting the cam piece 21a of the support frame 21 into the recess 17a of the front base plate 17, and the two members of the front base plate 17 and the support frame 21 are formed. Thus, the cam groove 156 can be easily formed.

A support portion 22a formed at the lower end of the lens barrel frame 22 is slidably supported on a guide shaft 158 via a bearing 157, as shown in FIGS. The lens barrel 51 is movably supported on the drive shaft 160, and the lens barrel 51 can move straight in the optical axis direction by the guide shaft 158 and the drive shaft 160.

One end of the guide shaft 158 is fixed to the holding plate 161, the other end is fixed to the front base plate 17, and one end of the drive shaft 160 is fixed to the front base plate 17.
The other end is rotatably supported by a holding plate 161 fixed to the front base plate 17 via a bearing 162 so as to be rotatable. The rotation of the drive shaft 160 causes the lens barrel frame 22 to move in the optical axis direction. Go straight ahead.

The guide shaft 158 and the drive shaft 160 are disposed below the optical axis O and parallel to the optical axis O.
As shown in FIG. 9, the inter-axis distance D1 is set within the distance D2 between the optical axis O and a straight line that is in contact with the outer shape of the lens barrel 51. As described above, since the distance D1 between the axes is set short, it is easy to assemble the parallelism between the guide shaft 158 and the drive shaft 160, and even if the parallelism is somewhat low, the driving mechanism that can be screwed is used. This effect can be absorbed by the voids and the like.

Further, since the lens barrel 51 is moved straight by the two guide shafts 158 and the drive shaft 160, the mechanism for driving the optical system is simple, and the lens barrel 51 can be formed into an arbitrary shape. With such a box shape, a space for mounting a shutter, a diaphragm, and the like can be easily secured.

The guide shaft 158 is precisely supported by the support portion 22a of the lens barrel frame 22 by a bearing 157 so that there is no backlash.
Is screwed into the female screw bearing 159, the backlash between the drive shaft 160 and the female screw bearing 159 of the lens barrel frame 22 causes the support portion 22a to be supported with play and facilitates assembly. I have.

The positions of the guide shaft 158 and the drive shaft 160 are not particularly limited. However, it is preferable that the guide shaft 158 and the drive shaft 160 be disposed on the center of gravity of the lens barrel 51 because the load on the lens barrel 51 can be reliably received. Also, the lens barrel 51
In order to support this load, the positions of the guide shaft 158 and the drive shaft 160 are preferably lower than the optical axis O.

A tip portion 163a of a position regulating member 163 inserted into the front base plate 17 is in contact with the support portion 22a of the lens barrel frame 22, and the position regulating member 163 is connected to the front base plate 17 via a spring 164.
The backlash between the drive shaft 160 and the female screw bearing 159 of the lens barrel frame 22 is absorbed so that the lens barrel frame 22 operates accurately. The female screw bearing 159 is a support part 2 of the lens barrel frame 22.
The support plate 165 fixed to 2a supports the female screw bearing 159 from the lens barrel frame 22.

A drive gear 166 is provided on the drive shaft 160.
As shown in FIG. 9, the gear 166 meshes with the output gear 171 of the motor 74 via the intermediate gears 167, 168, 169. When the motor 74 is driven, its power is changed to these intermediate gears 167, 168, 16
9 to the drive gear 166, thereby driving the drive shaft 16
It is designed to rotate 0.

The motor 74 is provided with rotating blades 172, and the number of rotations is detected by a photocoupler 173, and is used as control information for moving the lens barrel 51 in the optical axis direction. The photocoupler is a detection element in which a light source and a light receiving element are arranged to face each other, and detects whether there is an opaque object between the light source and the light receiving element. Further, as shown in FIG. 12, an operating member 174 is provided on the mounting portion 22a of the lens barrel frame 22, and the operating member 174 has a contact piece.
175 are provided. The contact piece 175 slides on the control board 176 in conjunction with the lens barrel 51, as shown in FIGS. The control board 176 is attached to the wall 17b of the front base plate 17, a power supply contact 175b and camera body side contacts 175c to 175g are provided on the control board 176, and when the lens barrel 51 is extended in the optical axis direction, When the contact piece 175 comes into contact with these camera body side contacts 175c to 175g, the collapsing stop position Y
1. Information on an initial position Y2 for normal shooting, a feed amount count base point Y3 for normal shooting, an initial position Y4 for macro shooting, and a feed amount count base point Y5 for macro shooting is provided to the control unit.

The control board 176 has a protrusion 176a at one end and a front ground plate 17
The other end 176b is engaged between stoppers 177 and 178 of a holding plate 161 fixed to the front base plate 17, and is supported so as to be movable in the optical axis direction. A position adjustment window 176c is formed in the control board 176, and an adjustment bolt 179 is screwed to the wall 17b of the front base plate 17 through the position adjustment window 176c. Mounting shaft 179 of this adjustment bolt 179
The position a is shifted from the center of the head 179b, and the control board 176 moves in the optical axis direction by the rotation of the adjustment bolt 179, and the position is adjusted.

As shown in FIG. 9, the lens barrel 51 can be formed in a box shape by disposing the optical system driving device at a position below the lens barrel 51,
A shutter driving mechanism and the like can be arranged inside the lens barrel 51. That is, the operation of the release button 2 drives the shutter motor 80, and the power is transmitted from the output gear 81 to the teeth 86a of the shutter ring 86 via the intermediate gears 82, 83, 84, 85, and rotates the shutter ring 86. Let
The three shutter blades 54c are opened and closed. Each of the shutter blades 54c has a support pin 8
The shutter blade 54c is rotatably supported by the lens barrel 51 via an opening 7.An engagement hole 54a is formed at the base of the shutter blade 54c, and an operating pin 88 fixed to the shutter ring 86 is formed in the engagement hole 54a.
Are engaged, and the rotation of the shutter ring 86 opens and closes the shutter blade 54c. The shutter ring 86 is set so that its projection 86b always comes into contact with a stopper 89a fixed to the lens barrel 51, and the stopper 89b regulates the position at the time of the opening operation.

A contact piece 54b is formed on the shutter blade 54c, and the photocoupler 99 detects the contact piece 54b so as to perform time management of shutter control.

Parallax correction mechanism As shown in FIG. 9 and FIG.
With the support pin 180 as a fulcrum, it rotates in the direction of the arrow in accordance with the extension of the photographing lens 50 with respect to the front ground plate 17 to enable parallax correction. A spring 181 is mounted on one of the support pins 180 between the support portion 71a of the light receiving side AF lens 71 and the front ground plate 17, and a correction spring 183 is provided between the support portion 71b and the parallax correction pin 182 on the other. Is installed. The parallax correction pin 182 moves the lens barrel frame 22 in the optical axis direction integrally with the lens barrel 51, so that the correction spring
The light-receiving side AF lens 71 is pushed via 183. A parallax adjustment lever 185 is attached to the other side of the light-receiving side AF lens 71 with a parallax adjustment pin 184, and the projection 71c of the light-receiving side AF lens 71 abuts on the parallax adjustment lever 185 to regulate the rotation position. Then, parallax correction for perspective switching is performed.

The photoelectric conversion element 76 behind the light receiving side AF lens 71 is arranged in an adjustment frame 77 as shown in FIG. 12, and the photoelectric conversion element 76 is mounted on an adjustment plate 78. The adjustment plate 78 is attached to the adjustment frame 77 with an adjustment pin 79, and the adjustment plate 78 is moved by rotating the adjustment pin 79, so that the photoelectric conversion element
The arrangement position of 76 is adjusted.

[Effect of the Invention] As described above, according to the first aspect of the present invention, the distance between the drive shaft and the guide shaft is set within the distance between the optical axis and the outer shape of the lens barrel, and the distance between the axes is set short. Therefore, it is easy to secure the parallelism between the drive shaft and the guide shaft, the rotation of the lens barrel is suppressed, and even if the parallelism is somewhat low, the influence is absorbed by the gap of the screwing drive mechanism etc. Thus, there is not a small possibility that the movement of the lens barrel is hindered.

The lens barrel is movably supported in the optical axis direction by one drive shaft and one guide shaft with respect to the camera body,
The rotation of the drive shaft causes the lens barrel to move by screwing on the axis, so that a sufficient moving distance of the lens barrel can be secured, the drive mechanism is simple and small, and the rotation of the lens barrel is stopped. Therefore, the number of parts can be reduced by omitting other guide shafts and mechanisms such as bearings provided in the camera, and the size and cost of the camera can be reduced.

Further, the shape of the lens barrel is not limited, and it is easy to secure a space for mounting a shutter, an aperture, and the like on the lens barrel.

[Brief description of the drawings]

1 to 6 show a camera to which the present invention is applied. FIG. 1 is a front view of the camera, FIG. 2 is a rear view thereof, and FIG.
FIG. 4 is a plan view, FIG. 4 is a left side view of FIG. 3, and FIG.
FIG. 6 is a sectional view taken along the line VI-VI of FIG. 1, FIG. 7 is a view showing a viewfinder display, FIG. 8 is a view showing a back cover display, and FIG. 9 is a lens barrel drive. FIG. 10 is a diagram showing a mechanism and a shutter driving mechanism, FIG. 10 is a diagram showing a lens barrier opening / closing mechanism, FIG.
10 is a sectional view taken along the line XI-XI in FIG. 10, FIG. 12 is a sectional view taken along the line XII-XII in FIG. 9 in a state where the lens barrel is moved, and FIG.
FIG. 14 is a sectional view taken along the line XIV--XIV of FIG. 9, and FIG.
The figure is a sectional view taken along the line XV-XV in FIG. In the figure, reference numeral 10 denotes a main body, 21 denotes a support frame, 22 denotes a lens barrel frame, 51 denotes a lens barrel, 158 denotes a guide shaft, and 160 denotes a drive shaft.

Claims (1)

(57) [Claims] 1. A camera in which a mirror copper provided with a photographing lens is movable in an optical axis direction with respect to a camera body, wherein all photographing lenses of the camera are mounted on the lens barrel so as not to move with respect to the lens barrel. One drive shaft and one guide shaft, which are fixed and arranged in parallel with the optical axis and whose axial distance is set within the distance between the optical axis and the outer shape of the lens barrel, An optical system moving device for a camera, wherein a lens barrel is supported so as to be movable in an optical axis direction.