JPH0449931B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a focal length switching type camera, and in particular, it can be used in a locked state with a lens barrier in a closed position, in a wide-angle state with a lens in a wide-angle position, and in a telephoto state with a lens in a telephoto position. This relates to enabling selection by operating a single selection member and linking the operation of the lens barrier and the movement of the lens.

Conventionally, rear converter type bifocal switching cameras in lens shutter cameras have manual switching or near-manual switching mechanisms, and there are few that switch automatically using a motor, especially when it comes to camera sequences. There is no description of using a motor.

In this type of camera, it would be desirable to be able to change the focal length while looking through the viewfinder, but if you try to do this manually, applying force to the small lens barrel will cause the camera to move. The operability of the camera was unsatisfactory, as my eyes would move away from the viewfinder and the camera would hit my glasses. In addition, in a camera using a motor, for example, Utility Model Application No. 57-192524, the switch for changing the focal length of the camera and the switch for locking the camera so that photography is not possible are provided separately. When changing the focal length of a camera, the camera operator has to manually operate separately provided operating members twice, making camera operation extremely cumbersome. Furthermore, when the operating members are provided separately in this way, the switches are dispersed, which makes electrical mounting difficult.

In view of the above points, the present invention has been made to improve the above drawbacks, and the present invention uses a motor to switch the focal length of the photographing lens of a camera.
By sharing the selection member for this switching with the lock position selection member, it is possible to prevent the number of operating members of the camera from increasing and simplify the operability of the camera. To facilitate electrical mounting, to release the locked state of the camera, and to switch the focal length of the photographing lens as necessary, which can be performed with a single operation of one selection member. By providing a barrier opening/closing mechanism that opens and closes the lens barrier in conjunction with the lock position and the movement associated with the selection of switching between the wide-angle position and the telephoto position, it is possible to change the focal length and close the lens barrier by operating only the selection member. An object of the present invention is to provide a focal length switching type camera that can be opened and closed.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an external view of the camera according to the present invention, and FIG.
The figure is a perspective view of the camera in a locked state in which photography is not possible, and FIG. 3 is a perspective view of the camera when the photographing lens is extended to a telephoto photography state.

In Fig. 1, 1 is a camera body, 2 is a lens barrel provided on the front side of the camera body, and 14 is a lens barrel that holds a photographic lens 3 inside and is slidable in the optical axis direction within the lens barrel 2. It is a movable lens barrel. When this photographic lens 3 is viewed from the front side of the camera, the main lens in front is visible in both the wide-angle shooting (hereinafter, the explanation in the example is referred to as standard shooting) mode and the telephoto shooting mode.
However, in the case of this figure, since the camera is in a locked state, the front surface of the photographing lens 3 is covered and protected by the lens barrier 23. 4
is a viewfinder that displays whether the camera is in lock mode, standard shooting mode, or telephoto shooting mode, as described below. 5
is an operating member as a selection member for mode selection switching that can be moved left and right by annual operation,
Lock mode L prohibits the camera's shooting operation, Standard shooting mode W takes standard photos with only the main lens as the shooting lens 3, and the main lens is extended to the front of the camera and a rear converter lens is added behind it to be used as the shooting lens 3. Three modes can be selected, including telephoto shooting mode T, which takes telephoto shots using a telephoto camera. It is selectable.

This mode switching mechanism will be explained in detail with reference to FIGS. 2 and 3. Reference numeral 7 denotes a mode selection lever that can be slid in the left and right directions (hereinafter, when referring to directions, the direction is shown when viewed from the front of the camera), and is moved to the left by a mode selection lever spring 6 whose one end is fixed to the camera body 1 side. The elongated hole 7g loosely fits into the pin 7f, which is biased in the direction of the camera body 1, and allows horizontal movement from side to side. Further, protrusions 7h and 7i of the mode selection lever 7 are provided, and these protrusions 7h and 7i are provided.
7i includes sections for sliding the first switch 20 and switch 22 (for example, in the case of the first switch 20, first and second sections 201, 2
02) is provided, and this piece slides over a group of switch patterns, which will be described later, made of copper foil or the like provided on the printed circuit board on the side of the camera body 1, so that the first switch 20 and the switch can be switched. 22
Open and close. The aforementioned operating member 5 is provided on the mode selection lever 7, and is held on the left side by the force of a spring 6 in the lock mode shown in FIG.

Reference numeral 8 designates a strobe locking lever, which is biased clockwise around a shaft 8a by a locking lever spring 9 whose one end is fixed to the camera body 1. In the lock mode shown in FIG. The rotational force always keeps the tension lever protrusion 7a at the right end of the mode selection lever 7 and the bent portion 8b at one end of the strobe tension lever 8 in abutting state. In the standard shooting mode or telephoto shooting mode, the strobe tensioning lever 8 is bent at the bent portion 8b by the tensioning lever protrusion 7a.
is pushed to the right and can be rotated counterclockwise. The lower part of the light emitter 10 has an elongated plate-like leg 10a having a long hole 10c that loosely fits into a pin 10b planted on the side of the camera body 1.
The leg a is biased upward by a pop spring 11 whose one end is fixed to the camera body 1 side, and a cutout-shaped tension member 10e is provided at the top of this leg 10a, and this tension member 10e can be used in the lock mode. The light emitter 10 is popped down as shown in FIG. 2 so that it is engaged with the locking pawl 8c at the other end of the strobe locking lever 8 to house the light emitter 10 in the camera body 1.

12 is a shaft 12 fixed to the camera body 1 side.
The lock lever is rotatable around b as the center of rotation, and is biased counterclockwise by the bias of a lock lever spring 13 that is similarly fixed at one end. Two chevron-shaped clicks 7
It is located directly below the movement of b and 7c, and this click 7
b or 7c to lock the mode selection lever 7 in either the standard photography mode or the telephoto photography mode. For example, a chevron-shaped lock pawl 12a is provided. In addition, the light emitter 1
A protruding reset button 10d extending downward is provided at the bottom of the lock lever 10 along with a leg 10a, and corresponding to the reset button 10d, a push portion 12c extending upward is provided at the other end of the lock lever 12. The engagement between either of the clicks 7b, 7c and the lock pawl 12a is released when the push portion 12c is pushed downward by the reset button 10d, causing the lock lever 12 to rotate clockwise. In addition, the lock claw 12
The relationship between a and the click 7b or 7c is determined by appropriately selecting the angle of inclination of the two when they engage, and by laterally operating the operating member 5 from the outside to switch and engage them. The camera can be held in either standard shooting mode or telephoto shooting mode. As mentioned above, the role of the lock lever 12 is to hold the mode selection lever 7 in the standard shooting mode or the telephoto shooting mode, and when the light emitter 10 is pushed in (pop down), the lock lever 12 and the click 7b or 7c The mode selection lever 7 is returned to the lock mode position by the force of the mode selection lever spring 6.

The finder 4 is a mark-type finder consisting of an objective lens 4a, an eyepiece lens 4b, a half mirror 4c, a mirror 4d, and a frame mask 4e.
(Lock mode), W (Standard shooting mode), and T (Telephoto shooting mode) symbol marks are attached in a row in the horizontal direction, and are selected in the viewfinder 4 by a protruding indicator 7e provided on the mode selection lever 7. The shooting mode etc. can be checked visually.

A motor 15 is provided in the camera body 1 as a drive source for the movable lens barrel 14 that slides in the optical axis direction within the lens barrel 2, and this driving force rotates the feed screw 19 via gears 16, 17, and 18. The screw 19 is configured to thread through the movable lens barrel 14 and to be transmitted to a fin-shaped screw receiving portion 14a provided on the movable lens barrel 14 side. The movable lens barrel 14 is extended or retracted by forward or reverse rotation of the motor 15.

21 detects whether the position of the movable lens barrel 14 is either the telephoto shooting mode position (extended position) or the standard shooting mode position (retracted position),
This is a second switch for energizing the motor 15 until the movable lens barrel 14 reaches the extended or retracted position depending on the selected photographing mode. As will be described later, this second switch 21 is made up of a three-pronged section 211 fixed to the movable lens barrel 14 side and a switch pattern group made of copper foil or the like on a printed circuit board provided on the lens barrel 2 side. This section 211
The second switch 21 is opened and closed by sliding on the switch pattern group. Energization to the motor 15 is performed by the second switch 21 and the first switch 20, which cooperates with the second switch 21 in conjunction with the movement of the operating member 5 and determines the direction of energization of the motor 15, as described below. It is done.

The above-mentioned switch 22 is used to change the amount of light emitted by the light emitter 20 in each mode of standard shooting and telephoto shooting mode, and to respond to changes in the F-number value for a given aperture for each mode for the exposure control mechanism. Since this switch is not an important part of the present invention, a detailed explanation thereof will be omitted.

Reference numeral 23 denotes the above-mentioned lens barrier, which is implanted in the front surface of the movable lens barrel 14 and is rotatable within the movable lens barrel 14 around the pin 23b as a center of rotation, and has one end fixed to the movable lens barrel 14 side using a barrier spring. 24 in the clockwise direction. A mode selection lever 7 is located on the right-angled portion of the lens barrier 23.
The barrier spring 2 is in contact with the inclined surface of the barrier switching cam 7d which protrudes forward from the cam 7d and whose tip part is inclined from the front to the rear of the camera from the right side to the left side.
A barrier pin 23a that brings the lens barrier 23 in front of the photographic lens 3 while charging the lens 4 is implanted. Since the engagement between the barrier pin 23a and the inclined surface of the barrier switching cam 7d is released in modes other than the lock mode, the lens barrier 23 is retracted from the front surface of the photographic lens 3 as shown in FIG. Note that a portion of the lens barrier 23 including the barrier pin 23a and a portion of the barrier switching cam 7d are located in a cavity (not shown) within the lens barrel 2.

Next, the operation of the camera according to the present invention will be explained with reference to FIGS. 1 to 3. When the camera is in lock mode, the camera is in the state shown in FIG. In this state, the mode selection lever 7 is positioned at the left end by the force of the mode selection lever spring 6.
In this position, the tension lever protrusion 7a is also located on the left side, and the strobe tension lever 8 is biased clockwise by the force of the tension lever spring 9 until the tension lever protrusion 7a abuts, and the strobe tension lever 8 is biased clockwise by the force of the tension lever spring 9. The locking claw 8c of 8 is used to secure the leg 10a of the light emitter 10.
and retains light emitter 10 pop-down as described above. In addition, the movable lens barrel 14 is
The lens barrier 23 is in the retracted position, and the pin 23b and the barrier cam 7d are engaged, so that the lens barrier 23 covers the front surface of the photographic lens 3.

Next, the operation when switching from the lock mode to the standard shooting mode will be explained. The operating member 5 is manually moved to the right along with the mode selection lever 7 against the force of the mode selection lever spring 6 and the clockwise rotational force of the tension lever 8 pushed by the tension lever spring 9. Along with this movement, the tensioning lever protrusion 7a pushes the bent portion 8b of the strobe tensioning lever 8 to the right against the force of the tensioning lever spring 9, thereby causing the locking claw of the strobe tensioning lever 8 to 8c is axis 8
It rotates counterclockwise around a as the center of rotation, and the engagement between the locking pawl 8c and the tensioner 10e is released. At this time, due to the upward bias of the pop spring 11, the light emitter 10 is moved together with its leg 10a and its light emitter 10c.
is pushed up until it appears at the top of the camera body 1 as shown in FIG. 3 and pops up. As the light emitter 10 moves upward, the lock lever 12 rotates clockwise together with the lock pawl 12a due to the bias of the lock lever spring 13, and the lock pawl 12a bites into the click 7b so that they are engaged. At this time, since the operating member 5 is positioned at the standard photographing mode position, manual movement of the operating member 5 is stopped.

On the other hand, when the first switch 20 is switched from the lock mode to the standard shooting mode, the motor 15 is not energized as described later, and the movable lens barrel 14 holding the shooting lens 3 is moved to the position in the lock mode. It remains in the same position without moving. Further, as the mode selection lever 7 moves to the right as described above, the barrier switching cam 7d
Since the cam 7d also moves to the right, the engagement between the cam 7d and the barrier pin 23a is released. This results in
The lens barrier 23 due to the restoring force of the barrier spring 24
rotates clockwise and is retracted from above the photographing lens 3 as shown in FIG. 3, so that the camera becomes ready for standard photography.

Next, the state of the camera when switching from standard photography mode to telephoto photography mode will be explained. The operating member 5 is manually moved to the right together with the mode selection lever 7 against the force of the mode selection lever spring 6, the tension lever spring 9, and the engagement force between the lock pawl 12a and the click 7b. At this time, the lock claw 12a
The lock lever 12 climbs over the inclined surface of the click 7b by clockwise rotation of the lock lever 12, and then bites into and engages with the click 7c by the counterclockwise rotation of the lock lever 12 due to the bias of the lock lever spring 13. Just when this engagement is carried out, the mode selection lever 7 is in a position fully moved to the right, and the camera has been switched from the standard photography mode to the telephoto photography mode. As the mode selection lever 7 moves to the right, the first switch 20 is switched as described later, and the motor 15 is energized. The motor 15 rotates in the forward direction, and this rotational driving force is transmitted to the feed screw 19 via the gears 16, 17, and 18, and the movable lens barrel 14 is moved by the movement of the screw receiver 14a due to the rotation of the screw 19. Together with the photographic lens 3, the light is squeezed out along the optical axis toward the front of the camera. Just when the photographing lens 3 reaches the telephoto shooting mode position, the second switch 21 is switched as described later to stop energizing the motor 15, and the photographing lens 3 is positioned to enable telephoto shooting. The state will be as follows.

On the contrary, the operation when the camera is switched from the telephoto shooting mode shown in FIG. 3 to the standard shooting mode will be described. The operating member 5 is manually switched from the telephoto shooting mode shown in FIG. 3 to the standard shooting mode position to the left. Along with this movement of the operating member 5, the protrusion 7h of the mode selection lever 7 also moves to the left together with the first and second sections 201, 202 of the first switch 20, and the first switch 20 is switched as described below. . At this time, the motor 15 is energized and rotates in reverse, and this rotational force is applied to the gears 16, 17, 1.
8 and feed screw 19, the movable lens barrel 14 is retracted to the rear of the camera along the optical axis to the retracted position shown in FIG. 2, and the camera is placed in a state ready for standard photography.

Next, the operation when the camera is switched from the telephoto shooting mode shown in FIG. 3 to the lock mode shown in FIG. 2 will be described. As shown in FIG. 3, a force is applied to the pop-up head of the light emitting device 10 to push it down against the force of the pop spring 11. Then, the light emitter 10 is popped down to the position shown in FIG. At this time, the reset button 10d of the light emitter 10 is locked on the lock lever 12.
hit the pusher part 12c and press it down.
As a result, the lock lever 12 rotates clockwise together with its lock pawl 12a against the counterclockwise bias of the lock lever spring 13, and the engagement between the lock pawl 12a and the click 7c is released. Ru. When this engagement is released, the mode selection lever 7 moves fully to the left together with the operating member 5 due to the restoring force of the mode selection lever spring 6 and the tension lever spring 9. The tension lever protrusion 7a has a bent portion 8b.
is no longer pressed, and the strobe tensioning lever 8 rotates clockwise together with its locking claw 8c due to the restoring force of the tensioning lever spring 9. As a result, the locking pawl 8c and the tensioner 10e engage with each other, and the light emitter 10 is held in the pop-down state against the force of the pop spring 11.

On the other hand, by moving the protrusion 7h of the mode selection lever 7 to the left to the lock mode position, the first switch 20 is switched as described later. This switched first switch 20 and the second switch 20 switched in the telephoto shooting mode position as shown in FIG.
Depending on the relationship between the switch 21 and the switch 21, the motor 15 is energized as described later. The motor 15 rotates in the reverse direction to move the movable lens barrel 14 together with the photographic lens 3 to the rear of the camera to the position shown in FIG. 2, that is, to the standard photographing mode position (lock mode position) as described above. When the movable lens barrel 14 is retracted, the barrier pin 23a comes into contact with the slope of the barrier switching cam 7d, and when the barrier pin 23a is guided along the slope, a counterclockwise force is applied to the lens barrier 23. In addition, while charging the barrier spring 24, the lens barrier 23 rotates counterclockwise so as to cover the front surface of the photographic lens 3. As mentioned above, the light emitter 10 is popped down,
The lens barrier 23 covers the front surface of the photographic lens 3, thereby keeping the camera in a locked state.

Also, although I did not explain the operation of switching from lock mode to telephoto shooting mode, it is obvious from the operation when switching from lock mode to standard shooting mode and from standard shooting mode to telephoto shooting mode. , the explanation of this operation will be omitted. Furthermore, when switching from the standard photographing mode to the lock mode, the operation is exactly the same as that for switching from the telephoto photographing mode to the lock mode, except for the movement of the movable lens barrel 14, and the explanation of the operation will be omitted.

Although the viewfinder 4 has not been explained in the above explanation, the index 7e is also positioned according to the positioning of the operating member 5 to each mode position, and the mode is clearly indicated according to the state of the selected mode. L, W, T on the frame mask
An indicator 7e points to one of the symbol marks. Therefore, when switching the operating member 5, it is only necessary to visually confirm which mode the mode is in through the viewfinder 4 while switching the operating member 5.

Next, a circuit for extending and retracting the movable lens barrel 14 will be explained using FIG. 4.

Reference numeral 20 designates the aforementioned first switch, which is composed of two electrically independent cooperating bifurcated sections 201 and 202 and switch patterns 203 to 208, and includes first and fourth switch patterns 203 and 206.
is the lock mode position (position L in the illustration, below)
It is abbreviated as L position. ) to the telephoto shooting mode position (position T in the diagram, hereinafter abbreviated as T position).
Up to 20 patterns for the second and fifth switches
4, 207 are from the L position to the standard shooting mode position (the W position in the figure, hereinafter abbreviated as W position), and are the third and sixth switch patterns 20.
5 and 208 are located at T positions on the extensions of the second and fifth switch patterns 204 and 207, respectively. Here, the first section 201 includes the first switch pattern 201 and the second switch pattern 204.
and the third switch pattern 205,
The second section 202 is the fourth switch pattern 2.
06. Slide on the fifth switch pattern 207 and the sixth switch pattern 208.

21 is the second switch mentioned above, and the third switch with three prongs.
Section 211 and Chi pattern 212-21 for sweets
4, the seventh sweet pattern 212
is from the movable lens barrel extended position to just before the movable lens barrel retracted position, the eighth switch pattern 213 is located from the movable lens barrel extended position to just before the movable lens barrel retracted position, and the ninth switch pattern 213 is movable. It extends from the lens barrel retracted position to the front of the movable lens barrel extended position. Note that the movable lens barrel extended position of the switch pattern means that the third section 211 comes into contact with the switch pattern at this position, and the movable lens barrel retracted position may be similarly interpreted.

Here, the first switch pattern 203 and the fourth switch pattern 206 are the power source battery 25
The second and sixth switch patterns 204 and 208 are connected to the seventh and ninth switch patterns 212 and 214, respectively, and the third and fifth switch patterns 205 and 207 are connected in common. is connected to one end f of the motor 15, and the eighth switch pattern 213 is connected to the other end f of the motor 15. In lock mode, the first switch 2
The first and second intercepts 201 and 202 of 0 are at the L position,
That is, it is the position shown by the solid line in the figure, and the third section 2
11 is located at the retracted position of the movable lens barrel as shown by the solid line in the figure. Therefore, in this state, the third section 21
Since the contact between the first and seventh switch patterns 212 is broken, the motor 15 is not energized.

Even if the camera is changed from the lock mode to the standard shooting mode by switching the operating members as described above, the first and second slices 201 and 202 are only moved from the L position to the W position, and the first switch 20 at this time The switching state is the same as in lock mode. Therefore, the motor 15 is not energized and the movable lens barrel 1
4 is the same position (the position indicated by the solid line in the figure)
is retained.

Next, when switching the operating member as described above and changing the camera from lock mode or standard shooting mode to telephoto shooting mode, the first and second sections 20
1,202 is located at the position indicated by the dashed line from the L or W position to the T position. Then, power supply battery 25 → first switch pattern 203 → first section 201 → third switch pattern 205 →
Motor 15 (current in direction of arrow A) → 8th switch pattern 213 → 3rd section 211 → 9th switch pattern 214 → 6th switch pattern 208 → 2nd section → 4th switch pattern 206 → A closed circuit of the power supply battery 25 is formed,
The motor 15 is energized and rotates in the forward direction, and the movable lens barrel 14 is extended to the movable lens barrel extended position shown by the solid double-dashed line.

When the movable lens barrel 14 has just moved to this position,
As shown by the two-dot chain line at the position of the third section 211, the contact between the third section 211 and the ninth switch pattern 214 is cut off, the closed/open circuit becomes an open circuit, and the power to the motor 15 is cut off. movement is stopped and the position is determined.

Next, if you switch the operating member as described above to change the camera from telephoto shooting mode to standard shooting mode, or switch the camera from telephoto shooting mode to lock mode by popping down the light emitter as described above,
The first and second sections 201 and 202 are switched from the T position shown by the dashed line to the W or L position. At this time, power supply battery 25 → first switch pattern 203 → first section 201 → second switch pattern 204 → seventh switch pattern 212
→ Third section 211 → Eighth switch pattern 213 → Motor 15 (current is in the direction of arrow B) → Fifth
switch pattern 207 → second section 202
→Fourth switch pattern 206 →Power battery 2
A closed circuit 5 is formed, the motor 15 is energized and rotates in the reverse direction, and the movable lens barrel 14 is retracted from the position shown by the two-dot chain line to the movable lens barrel retracted position shown by the solid line. When the movable lens barrel 14 is moved to exactly this position, the contact between the third section 211 and the seventh switch pattern 212 is broken, as shown by the solid line at the position of the third section 211. The above opening/closing path becomes an open circuit, the power supply to the motor 15 is cut off, the movement of the movable lens barrel 14 is stopped, and the movable lens barrel 14 is positioned.

When the camera is switched from the standard photographing mode to the lock mode by popping down the light emitter as described above, the switching operation is the same as the reverse, and the motor 15 is not energized as described above.

In addition, the mark type finder of the above embodiment is as follows:
The L, W, and T symbol marks are indicated by the indicators, but apart from this, a mask indicator 7e provided in the notch is used as shown in Fig. 5 to make only the symbol mark of the selected mode stand out. is also valid.

As described above in detail regarding this embodiment, switching from lock mode to telephoto shooting mode and switching from lock mode to standard shooting mode can be easily performed with a single operation of a single operating member, making the camera easier to operate. has improved significantly. Moreover, since each mode is displayed in the viewfinder, you can operate the operating elements while looking at this display.Furthermore, since it is a single operating element operation, there is no need to apply much force to the camera, so you can keep your eyes away from the viewfinder. It is now possible to operate it easily without having to take it off. In addition, the mode switching mechanism can be centralized, which is very advantageous in terms of electrical implementation of the camera. In addition, the lens barrier is moved from the closed position to the open position in conjunction with the movement associated with the selection from the lock mode to the standard shooting mode or the telephoto shooting mode using a single operating member, and vice versa. When moving to lock mode, the lens barrier is moved from the open position to the closed position, greatly improving operability. Furthermore, when it detects that the selected member has switched from telephoto shooting mode to lock mode, the motor is forcibly driven to move the lens in the retracting direction, making it possible to shorten the lens length when the camera is not in use. This also greatly improved portability.

As described above, according to the present invention, the locked state in which the lens barrier is in the closed position, the state in which the lens is in the wide-angle position, and the state in which the lens is in the telephoto position can be selected by moving one selection member. Furthermore, when the selection member is moved from the locked state to the wide-angle position or the telephoto position, the lens barrier is interlocked and moved from the closed position to the open position. Since the lens barrier is moved from the open position to the closed position when the selection member is moved in the opposite direction, the operability can be greatly improved from this point as well. Further, in the present invention, when it is detected that the selection member has moved to the locked state when the lens has been moved to the telephoto position, the lens barrier is moved to the closed position and the lens is also moved towards the wide-angle side. Therefore, the lens optical system can be protected when the camera is not in use, and the lens length can be shortened to improve portability.

[Brief explanation of the drawing]

Fig. 1 is an external view of the camera according to the present invention, Fig. 2 is an explanatory diagram showing the mechanism of the main part of the camera according to the invention in lock mode, and Fig. 3 is a diagram showing the mechanism of the main part of the camera according to the invention. An explanatory diagram of the telephoto shooting mode shown below.
FIG. 4 is an explanatory diagram of a motor drive circuit for a camera according to the present invention, and FIG. 5 is an explanatory diagram of another embodiment of the mark type finder. DESCRIPTION OF SYMBOLS 1... Camera body, 2... Lens barrel, 3... Photographic lens, 4... Mark type viewfinder, 5... Operation member, 7... Mode selection lever, 7b, 7c...
Click, 7d...Barrier switching cam, 8...Strobe tension lever, 10...Light emitter, 10d...Reset button, 12a...Lock claw, 14...Movable lens barrel, 15...Motor, 20... First switch, 21... Second switch, 23... Lens barrier, 23a... Barrier pin, 24... Barrier spring, 201... First section, 202... Second section.

Claims (1)

[Scope of Claims] 1. The lens constituting the photographic optical system is moved from the wide-angle side to the front of the optical axis to change the focal length to the telephoto side, and the lens is moved from the telephoto side to the rear of the optical axis to change the focal length. A focal length switching camera that changes the focal length toward a wide-angle side, comprising: a lens moving mechanism that uses a motor as a drive source to move the lens in the optical axis direction; a closed position that covers the front of the optical axis of the lens; a lens barrier that moves to an open position where it is retracted from in front of the optical axis; a selection member that can be moved to any one of a lock position, a wide-angle position, and a telephoto position by manual operation; and a moving state of the selection member. a detection means for detecting, when the detection means detects that the selection member has moved to the wide-angle position, the motor is driven to move the lens to the wide-angle position; When detecting that the selection member has moved to the telephoto position, the motor is driven to move the lens to the telephoto position, and the detection means moves the selection member to the lock position. a motor control means for driving the motor to forcibly move the lens in the wide-angle direction if the lens has moved to the telephoto position when it is detected that the lens has moved to the wide-angle side; In conjunction with movement of the selection member due to selection between the lock position and the wide-angle position or the telephoto position, when the selection member is moved from the lock position to the wide-angle position or the telephoto position, the lens barrier a barrier opening/closing mechanism that moves the lens barrier from the open position to the closed position when the lens barrier is moved from the closed position to the open position and the selection member is moved from the wide-angle position or the telephoto position to the lock position; A focal length switchable camera characterized by being provided with.