JP3302493B2 - Collapsible camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a collapsible camera, more specifically, a camera having a light-blocking member driving means for shielding a part of an exposure screen from light. The present invention relates to a retractable camera.

[0002]

2. Description of the Related Art In recent years, in a camera using a roll film having a width of 35 mm, a light-shielding member which can be inserted and removed is provided in an optical path of a photographing lens for forming a subject image. When inserted, the upper and lower portions of the photographing opening (exposure screen) are shielded from light, so that a 35 mm full size of a normal photographing screen (for example, an exposure screen of 24 mm × 36 mm (= aspect ratio 2: 3), etc.) ) Rather than a landscape screen (for example, an exposure screen of 12 mm × 36 mm (= aspect ratio 1:
3) is exposed on a film, and is exposed to a normal print (for example, a service size print).
There is a type in which a horizontally long photograph (for example, a so-called panoramic size print of 89 mm × 254 mm) is obtained by printing at a larger enlargement magnification.

[0003] The operation of inserting and removing the light-shielding member is performed by inserting and removing the light-shielding member in the camera body from the optical path of the taking lens by an operating member on the exterior part of the camera. The so-called “panorama / standard intermediate switching function” camera, which can freely switch between the normal size shooting screen and the panorama size shooting screen for each frame of the shooting screen even in the middle, Conventionally, various proposals have been made and practical applications have been made.

On the other hand, when the camera is carried or stored, a photographing lens provided to protrude from the camera body is retracted and stored in the camera body. On the other hand, when taking a photograph, the photographing lens is driven by driving means. Various cameras that can be moved from the camera body to a shooting area have been proposed and put into practical use.

[0005] For example, in a camera disclosed in Japanese Patent Application Laid-Open No. 5-45700, an operation member provided on an exterior part of the camera is manually controlled by a photographer so that a light-shielding member provided in the camera body is provided. By moving a member (panoramic mask), the light-blocking member is inserted into and removed from the photographic lens in the optical path.

A camera lens drive control device disclosed in Japanese Patent Application Laid-Open No. 4-171432 discloses a camera lens drive control device in which a photographer manually operates an operation member provided on an exterior portion of the camera. In a camera in which a light-shielding member (panorama mask) is operated, a detecting means for detecting the operation of the light-shielding member is provided to detect the operation of the light-shielding member, that is, the set position of the light-shielding member, If it is determined by the signal that the light shielding member is about to be set to the light shielding state,
A photographic lens (zoom lens) such that the light shielding member does not come into contact with the photographic lens by the light shielding operation of the light shielding member.
Is driven to zoom from the wide-angle side to the telephoto side, and the taking lens is retracted.

[0007]

However, according to the means disclosed in JP-A-5-45700,
The means for driving the light shielding member (panoramic mask) for shielding the opening for photographing and the retracting means for retracting the taking lens into the camera body when the camera is carried or stored are driven in conjunction with each other. If the light-shielding member is inserted into the optical path of the photographing lens to make the exposure screen light-blocking, that is, if the photographing lenses L1 and L2 are retracted in the state shown in FIG. As shown in FIG. 15B, the rear end surface of the photographing lens L2 and the light shielding member 300
The contact between the a and 300b may damage the photographic lens surface or damage the light blocking member. Therefore, in order to avoid such a problem, it is necessary to design the retracted position of the photographing lens of the camera based on a state in which the light blocking member is inserted into the optical path of the photographing lens. There is a problem in that it is a design restriction to reduce the size of the device.

Further, according to the means disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 4-171432, when the photographing lens (zoom lens) is on the wide-angle side, the light-shielding member (panorama mask) blocks the exposure screen. When performing, the problem that the light-shielding member comes into contact with the photographing lens has been solved, but since the light-shielding or non-light-shielding operation of the exposure screen by the light-shielding member is not automated,
There is a disadvantage that there is a problem in operability.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems. In a photographic lens collapsible camera in which a light-shielding member is driven by electric power, an exposure screen by the light-shielding member is provided. An object of the present invention is to provide a camera lens collapsible camera that does not damage the imaging lens surface or damage the light shielding member due to shading or non-shading operation or collapsing operation of the imaging lens, and that is further downsized.

[0010]

As shown in the conceptual view of FIG. 1A, a photographic lens collapsible camera according to the present invention has a light shielding member driving means for inserting and removing a light shielding member in an optical path of a photographic lens. 1, a photographing lens driving means 2 for moving the photographing lens from the normal photographing area to the retracted area or from the retracted area to the normal photographing area, and a photographing lens retracting instruction means 3 for instructing to move the photographing lens to the retracted area. The instruction by the taking lens retracting instructing means 3 causes the taking lens to retract after the light shielding member is retracted.

Further, as shown in the conceptual diagram of FIG.
In addition to the configuration shown in FIG. 1A, a light-shielding / non-light-shielding state detecting means 4 for detecting the state of the light-shielding member is provided, and the output of the photographing lens retracting instruction means 3 and the light-shielding / non-light-shielding state detecting means 4 is provided. When the light-shielding member is in the non-light-shielding state, the photographing lens is retracted by the photographing-lens driving means 2, and when the light-shielding member is in the light-shielding state, the light-shielding member is driven by the light-shielding member driving means 1. After retracting, the taking lens is retracted by the taking lens driving means 2.

As shown in the conceptual diagram of FIG. 1C, in addition to the configuration of FIG. 1B, a photographing lens photographing area for instructing to move the photographing lens from the retracted region to the normal photographing region. A setting instructing means 5 is provided so that, when a setting instruction of a photographing area of the photographing lens is issued, the position of the light shielding member before the previous collapse of the photographing lens or the position of the light shielding member immediately before the photographing lens is driven. When a light-shielding setting instruction is issued based on the output of the light-shielding / non-light-shielding state detecting means 4 for detecting the output of the light-shielding member position specifying means 6 for designating the position, after the photographing lens is moved to the photographing area, By driving the light-blocking member, the light-blocking state is set, and when a non-light-blocking setting instruction is issued, the photographing lens is immediately driven to move to the photographing area.

[0013]

In response to an instruction from the retractable instructing means for instructing to move the taking lens to the retracted area, the retracting operation of the light shielding member is performed by the light shielding member driving means from within the optical path of the taking lens. After the end, the control means controls the photographing lens driving means to move the photographing lens to the collapsing area.

Further, in response to an instruction from the instructing means for moving the photographing lens from the retracted position to the normal photographing region, the photographing lens is moved by the photographing lens driving means. The light shielding member is driven by the light shielding member driving means based on the output of the position designating means.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. FIG. 2 is a block diagram schematically showing an electric system in the camera according to the first embodiment of the present invention. In FIG. 2, only parts relating to the present invention are shown to avoid complication of the drawing, and other members are omitted.

As shown in FIG. 2, the control means 1 is a one-chip microcomputer formed by a CPU or the like, for controlling the entire camera system.
1, a power switch (SW) 12, a release switch (SW) 13, a panorama switch (SW) 1
4. A zoom-up switch (SW) 15, a zoom-down switch (SW) 16, and the like are electrically connected, and by operating these switches 12 to 16,
The intention of the photographer when taking a photograph is determined by the control means 1
1 to operate each mechanism of the camera.

The control means 11 includes light-shielding / non-light-shielding state instructing means and light-shielding member position specifying means 6.
For example, an EEPROM 1 composed of an electrically non-volatile memory or the like
7 are connected by a serial communication line.
Each adjustment value of the camera is stored in the PROM 17. The EEPROM 17 is also a storage unit for temporarily storing various data indicating the operation state of the camera.

On the other hand, the control means 11 and the motor drive circuit 18 are electrically connected, and the control circuit 11 controls the motor drive circuit 18. That is, the control means 11 drives the photographing lens to perform focusing control by taking a photographing lens drive (LD) motor 19, drives the photographing lens to perform zooming control, and retracts the photographing lens from the normal photographing area. A panorama for driving a zoom motor 20 as a photographing lens driving unit for moving from a region or a collapsed region to a normal photographing region and an electric panorama driving device 24 as a light blocking member driving unit to perform switching control of an exposure screen. Each drive control of the motor 21 is performed.

The panoramic motor 21 is connected to an electric panoramic driving device 24 as a light shielding member driving device 1 having an electric driving device via a transmission mechanism such as a gear train. Is provided with a panorama state switch (SW) 23 which is a light-shielding / non-light-shielding state detecting means 4 for detecting the state of the light-shielding member, and a control signal is turned on (ON) when the exposure screen is shielded. I have. This panorama state switch 23
It is electrically connected to the control means 11, and transmits an output signal thereof directly to the control means 11.

FIG. 3 is a perspective view of an essential part showing the appearance of the electric panoramic driving device for a camera according to the first embodiment. As shown in FIG. 3, the electric panoramic driving device 24 of the camera according to the first embodiment is the light-shielding member driving unit 1 having the electric driving unit, and includes the following various components.

That is, the electric panoramic driving device 24
A panoramic light-shielding portion 42a that shields the upper and lower portions of the exposure screen,
A first and second panoramic light shielding member 42 having
43, the first and second panoramic light shielding members 42, 43
A light-shielding spring 44 that connects the spaces and constantly urges the exposure screen light-shielded by the panorama light-shielding portions 42a and 43a in a light-shielding direction, and a light-shielding spring 44 that drives the first and second panorama light-shielding members 42 and 43, respectively. The first and second panorama drive arms 40 and 41, the panorama motor 21, and a cam gear for transmitting the driving force from the panorama motor 21 to the first panorama drive arm 40 via a reduction gear train or the like (not shown). 22; first and second cams 22a and 22b constituting the cam gear 22; a panorama state switch (SW) 23;
With the vertical movement of the rack 43d of the projection 43c of
A finder light-shielding portion having a pinion gear 71A meshing therewith, a finder 57 portion, and a finder light-shielding portion 67a for shielding the finder screen of the finder portion 57 through a gear train (not shown) connected to the pinion gear 71A. It is constituted by each constituent member such as the member 67.

The rotational driving force of the panoramic motor 21 is transmitted to the cam gear 22 via a reduction gear train or the like (not shown) as described above, and as the cam gear 22 rotates, the gum gear 22 The first and second cams 22a and 22b which are disposed so as to be integrally supported by
And rotate.

On the cam surface on the peripheral surface of the first cam 22a,
The cam portion 40a of one arm portion provided downwardly of the first panorama drive arm 40 is always in contact with the first panorama drive arm 40, and the first cam 22a is rotated with the rotation of the cam gear 22. Is converted into a driving force in the front-rear direction and transmitted to the first panorama driving arm 40. As a result, the first panorama drive arm 40 is rotated about its support shaft 40d.

Further, the second cam 22b rotated with the rotation of the cam gear 22 is always in contact with the contact point of the panorama state SW23, and the second cam 22b is rotated by the rotation of the second gear 22b. Panorama state SW2
3 switch operation, ie, ON (ON) or OFF (O
A switch operation for outputting an FF) signal is performed, and the light-shielding / non-light-shielding state of the light-shielding member on the exposure screen is detected.

On the other hand, the first panorama drive arm 40
The two sector gear portions 40b are located at positions separated by an angle of 90 ° in the rotation direction about the support shaft 40d,
40c is provided, and the second panoramic drive arm 41 has a rotation direction around its support shaft 41d.
Two sector gear portions 41a and 41b are provided at positions separated by an angle of 90 °. And the first
The second panoramic drive arms 40 and 41 are rotatably supported by support members (not shown) of the camera body on the respective support shafts 40d and 41d.

Further, one sector gear portion 40c of the first panorama drive arm 40 and one sector gear portion 41a of the second panorama drive arm 41 are engaged with each other, and as described above, the cam gear 22 First
The driving force from the panorama motor 21 transmitted to the first panorama drive arm 40 via the cam 22a and the cam portion 40a of the first panorama drive arm 40 is transmitted to the second panorama drive arm 41. The first and second panoramic drive arms 40 and 41 are respectively rotated.

The other sector gear portion 40b of the first panorama drive arm 40 and the rack portion 42b of the first panorama light shielding member 42 mesh with each other, and at the same time, the other sector gear portion of the second panorama drive arm 41. Part 4
1b and the rack portion 43b of the second panoramic light shielding member 43
And the first and second panorama drive gears 40 and 41 are rotated by the rack portions 42 of the first and second panorama light shielding members 42 and 43.
b and 43b are respectively moved up and down, whereby the first and second panorama light shielding members 42 and 43b are moved.
Panorama light-shielding portions 42a, 43a provided at the other end of 43, one end of which is supported in a direction perpendicular to the optical axis.
Are moved in the vertical direction so that the exposure screen is in a light-shielded or non-light-shielded state.

The first and second panorama light-shielding members 42 and 43 are supported by a support member (not shown) of the camera body.
Is supported by a support shaft 39, as described above,
They are connected by a spring 44. And this spring 4
By the urging force of No. 4, the first and second panorama light-shielding members 42 and 43 are always urged in the direction of the panorama size, that is, the direction of always shielding the exposure screen.

On the other hand, with the vertical movement of the second panorama light shielding member 43, the rack 43d of the projecting portion 43c provided on the upper side of the second panorama light shielding member 43,
By rotating the pinion gear 71A meshing with the gear 71B and rotating the gear 71B via a gear train (not shown), the rack portion 67b of the finder light shielding member 67 meshing with the gear 71B is driven. ing. Therefore, the first and second panorama light shielding portions 42,
The light-blocking or non-light-blocking operation of the finder section 57 is performed in conjunction with the light-blocking or non-light-blocking operation of the exposure screen performed by 43.

The operation of the electric panoramic driving device 24 of the camera of the first embodiment having the above-described structure when the exposure screen is set in the light-shielding state or the non-light-shielding state will be described below with reference to FIGS. . FIG. 4 shows the first and second cams 22a and 22b rotating by the rotation operation.
FIG. 4A is a diagram showing the operation of the cam portion 40a of the panorama drive arm 40 and the operation of the panorama state SW 23, and FIG.
4 to (d).

First, in FIG. 4A, when the first cam 22a rotates counterclockwise due to the rotation of the panorama motor 21, the first panorama drive arm 40 rotates.
Is driven in the direction A1 in FIG. 3 by the cam surface A of the first cam 22a. Thus, the first panorama drive arm 40 is rotated counterclockwise about the support shaft 40d, the second panorama drive arm 41 is rotated clockwise about the support shaft 41d, and the first and the second panorama drive arms 41 are rotated clockwise. 2 Panorama light shielding members 42 and 43
And the panorama light shielding portions 42a and 43a are connected to A2 in FIG.
Driving in the direction, that is, in the direction of the non-light-shielded state of the exposure screen, a normal exposure screen size is obtained. In this case, the contact point of the panorama state SW23 is turned off (OF) by the cam surface B of the second cam 22b.
F).

Next, when the first cam 22a further rotates counterclockwise, as shown in FIG.
The cam portion 40a of the panoramic drive arm 40 rotates while abutting along the cam surface A of the first cam 22a, and
It moves to the cam surface Ab of the cam 22a. As a result, the cam portion 40a is driven in the direction B1 in FIG. 3, so that the first panorama drive arm 40 moves clockwise about the support shaft 40d, and the second panorama drive arm 41 moves in the support shaft 41d. And the first and second panorama light-shielding members 42 and 43 and the panorama light-shielding portions 42a and 43a are driven in the direction B2 in FIG. 3, that is, in a direction to shield the exposure screen. The exposure screen is in a light-shielded state and has a panoramic screen size. In this case, the panorama state SW 23 is controlled by the cam surface B of the second cam 22b as shown in FIG.
As in the state of (a), the contact is kept pressed and is in an OFF state.

Further, when the first cam 22a rotates counterclockwise, the state shown in FIG. 4C is obtained. In this state, the cam section 40a is located at the same position as the state shown in FIG.
a and 43a are held in a light-shielded state by the urging force of the spring 44, and the panoramic state SW23 is turned on (ON) by releasing the contact at its contact point by the cam surface Bb of the second cam 22b. It is said. Therefore, in this state, the state of the camera becomes a panoramic state.

Further, when the first cam 22a rotates counterclockwise, the state shown in FIG. In this state, the cam portion 40a is connected to the first cam 22.
The first panoramic drive arm 40 is again driven in the direction A1 in FIG.
The rotation of the second panorama drive arm 41 starts clockwise around the support shaft 41d, and the first and second panorama light shielding members 42 and 43 and the second panorama light shielding member 42 and 43, respectively. The parts 42a and 43a correspond to FIG.
Is started in the A2 direction, that is, the non-light-shielded direction of the exposure screen, and the movement of the exposure screen from the light-shielded state to the non-light-shielded state, that is, the movement of the exposure screen from the panoramic screen to the normal exposure screen is started. In this case, the panorama state SW 23 is moved from the ON (ON) state of the second cam 22 b by the cam surface Bc to the OFF (OFF) state of the cam surface B, and the first cam 22 a With the rotation in the counterclockwise direction, the state described above with reference to FIG.

FIG. 5 is a flowchart of a subroutine (panorama ON) showing control when the exposure screen is set in the light-shielded state in the electric panoramic drive device for the camera of the first embodiment, that is, the panorama state SW 23 is turned on ( O
N).

As shown in FIG. 5, first, in step S1, the motor driving circuit 18 is controlled by the control means 11 described above.
(O) to rotate the panorama motor 21 from
N) By transmitting a signal, the cam gear 22 is rotated, thereby rotating the first and second cams 22a and 22b in a counterclockwise direction (here, S indicates an operation step; the same applies hereinafter). ).

Next, in step S2, the output signal of the panorama state SW 23 is directly read by the control means 11. Then, the control means 11 controls the motor drive circuit 18 to continuously send an on (ON) signal of the panorama motor 21 until the signal of the panorama state SW 23 is turned on (ON). The motor 21 continues to be driven.

Then, the output signal of the panorama state SW 23 is set to the ON (O) state described in FIG.
When the state becomes N), the process proceeds to the next step S3, and the control unit 11 transmits an OFF signal to the panorama motor 21 via the motor driving circuit 18,
A series of processing of this subroutine (panorama ON) ends (return).

FIG. 6 is a flowchart of a subroutine (panorama OFF) showing control when the exposure screen is set in the non-light-shielded state in the electric panoramic drive device for the camera of the first embodiment, that is, the panorama state SW 23 is turned off ( O
FF).

As shown in FIG. 6, first, in step S4, the motor driving circuit 18 is controlled by the control means 11.
(O) to rotate the panorama motor 21 from
N) By sending a signal, the cam gear 22 is rotated, thereby rotating the first and second cams 22a and 22b in a counterclockwise direction.

Next, in step S5, the output signal of the panorama state SW23 is directly read by the control means 11. Then, the control means 11 controls the motor drive circuit 18 to continuously send an on (ON) signal of the panorama motor 21 until the signal of the panorama state SW 23 is turned off (OFF). The motor 21 continues to be driven.

Then, the output signal of the panorama state SW 23 is turned on (O) as described with reference to FIG.
When the state becomes N), the process proceeds to the next step S6, and the control unit 11 transmits an OFF signal to the panorama motor 21 via the motor drive circuit 18 so that
A series of processing of this subroutine (panorama OFF) ends (return).

FIG. 7 is a flowchart of a subroutine (collapse) showing an operation when the photographing lens is collapsed and stored in the camera body in the camera of the first embodiment. It is assumed that a zoom lens is applied to the photographing lens in the camera of the first embodiment. As shown in FIG. 7, first, in step S7, information on the current exposure screen size, that is, the electric panoramic driving device 2
4. The currently set exposure screen made by
Information indicating whether the state is light-shielded or non-light-shielded is written and stored in the EEPROM 17.

Next, in step S8, the output signal of the panorama state SW 23 is directly read by the control means 11. In this case, the panorama state SW2
If the output signal of No. 3 is on (ON), the process proceeds to the next step S9, and the subroutine (panorama OFF) described with reference to FIG. Is turned off, the exposure screen is set to a normal exposure screen size, that is, a non-light-shielded state.

On the other hand, in step S8, when the panorama state SW 23 is off (OFF), the exposure screen size is already the normal screen size.
Since the exposure screen is in a non-light-shielded state by the electric panoramic drive device 24, the process proceeds to step S10. In this step S10, the control unit 11 controls the motor drive circuit 18 so that the zoom motor 20 When the output signal is turned on (ON), driving of the photographing lens (not shown) in the direction of being retracted into the camera body, that is, retracting operation of the photographing lens is performed. In the next step S11, the zoom motor 20 is moved until the completion of the retracting operation of the taking lens is detected.
Is driven.

Next, when the completion signal of the retracting operation of the photographing lens is detected, the process proceeds to step S12, and the control means 11 sends the zoom motor 20 through the motor drive circuit 18.
By turning off the output signal of (1), a series of processes of the retracting operation of the photographing lens is completed (return).

FIG. 8 is a flowchart of a subroutine (zoom set) showing the operation when setting the taking lens of the camera of the first embodiment to the taking area.
As shown in FIG. 8, first, in step S13, the control unit 11 turns on the output signal of the zoom motor 20 by the motor drive circuit 18 so as to drive the photographing lens in the direction of extending from the camera body. Let it.
At this time, until the photographing lens is moved to the position on the widest angle side in the photographing area of the zoom lens that is the photographing lens,
The zoom motor 20 is driven. When the photographing lens is moved to the widest position, in the next step S15, the control means 11 controls the motor drive circuit 18 to turn off the output signal of the zoom motor 20 (OFF). ).

Next, in step S16, step S of the subroutine (collapse) described in FIG.
In step 7, after the information written and stored in the EEPROM 17, that is, the information on the exposure screen size before the taking lens is collapsed, is read out by the control means 11, the process proceeds to the next step S17.

In step S17, the information on the exposure screen size read out in the processing in step S16 is determined by the EEPROM 17, which is the light-shielding / non-light-shielding state indicating means and the light-shielding member position specifying means 6. That is, when it is determined that the state before the taking lens is collapsed is not a panoramic screen, that is, when the exposure screen is in a non-light-shielded state, a series of processing is terminated (returned) while the photographing is performed. If the state before the lens is collapsed is a panoramic screen, that is, if the exposure screen is in a light-shielded state, the process proceeds to the next step S18, and the subroutine described above with reference to FIG. ) To set the exposure screen in a light-shielded state (panoramic screen), and thereafter, a series of processing ends (return).

FIG. 9 is a flowchart of a subroutine (zoom set 1A) showing a modified example of the above subroutine (zoom set) in the operation of setting the photographing lens of the camera of the first embodiment to the photographing area. .

In the subroutine (zoom set) of FIG. 8 described above, in step S17, the EEP
By judging the screen size information before the collapse of the photographing lens stored in the ROM 17, it is determined whether or not to execute the above-described subroutine (panorama ON) of FIG. 5, and the exposure before the collapse of the photographing lens is performed. In contrast to the setting of the screen size, in this modified example, regardless of the screen size information before the collapse of the photographing lens, only when the output signal of the panorama state SW 23 is turned on by the photographer, The subroutine (panorama ON) shown in FIG. 5 is executed.

That is, as shown in FIG. 9, first, at step S19, the control means 11 causes the hand motor driving circuit 1 to operate.
Reference numeral 8 turns on the output signal of the zoom motor 20 to drive the photographing lens in a direction in which the photographing lens extends from the camera body.

In step S20, the control means 11
Drives the zoom motor 20 until the photographing lens is moved to the widest position in the photographing area.
When the photographing lens is moved to the wide-angle position, the process proceeds to the next step S21, and the output signal of the zoom motor 20 is turned off.

Next, in step S22, the state of the panorama state SW 23 is checked, and the panorama state SW 23 is checked.
If the output signal of W23 is off (OFF), a series of processing is terminated (return) as it is, while if the output signal of panorama state SW23 is turned on (ON) by the photographer, the next step Proceeding to the process of S18, the subroutine (panorama O
N) is performed to block the exposure screen, that is, after the screen size is switched to the panoramic plane, a series of processing is terminated (return).

As described above, according to the camera of the first embodiment, as shown in FIG.
a, 43a, when the exposure screen is in the light blocking state, the collapsing operation of the photographing lenses L1, L2 is performed.
Electric panoramic driving device 24 as light shielding member driving means 1
And the taking lens driving means 2 for performing the collapsing operation, so that if the exposure screen is in a light-blocking state, this is set to a non-light-blocking state, and then the collapsing operation of the taking lens is performed. When the taking lens is collapsed, the light blocking member is retracted so that the light blocking member is always in a non-light blocking state. The photographing lens can be stored in the camera body without damaging the camera.

When the photographing lens is retracted, the light shielding member is retracted, so that the photographing lens can be retracted deeper, which facilitates the design for miniaturizing the camera.

FIG. 11 is a perspective view of a main part showing the appearance of an electric panoramic driving device for a camera according to a second embodiment of the present invention.
Note that, in the electric panoramic driving device of the second embodiment, the electric panoramic driving device of the above-described first embodiment (FIG. 3)
Therefore, the description of the same components as those in the first embodiment is omitted because the description is duplicated, and the reference numerals with the numeral 100 added are attached, and the description is different. Only the part will be described.

In the first embodiment, as described with reference to FIG. 3, the cam portion 40a of the first panorama drive arm 40 is driven by rotating the first and second cams 22a and 22b of the cam gear 22. by doing,
The panorama light-shielding portions 42a and 43a are moved so that the exposure screen is in a light-shielded or non-light-shielded state. However, in the second embodiment, as shown in FIG. First and second cams 22
Instead of a and 22b, a slip clutch mechanism including a cam gear 122, a cam 122d having an arm protruding on the peripheral surface, a rotating member 122e, and a leaf spring 122c is provided. The cam 122d and the rotary member 122e are integrally formed, are rotatably supported on the same axis of the cam gear 122 so as to be rotatable forward and backward, and the leaf spring 122 is fixed to the camera body.

A stopper pin 200 serving as a locking member for locking the rotation of the second panorama drive arm 141.
a and 200b are newly provided, and the cam gear 122, the cam 122d, and the rotating member 122e are rotated forward and reverse by rotating the panorama motor 121 forward and backward. Different from the first embodiment.

As described above, when the panorama motor 121 is rotated forward and backward, the rotational driving force is transmitted to the cam gear 122 via a reduction gear train or the like (not shown), and the cam gear 122 is rotated forward and backward. When the cam 122d is rotated, the cam 122d is rotated forward and reverse, and the arm of the cam 122d rotates the cam portion 140 of the first panorama drive arm 140.
By pressing the cam surface C portion or the cam surface D portion of a, the first and second panoramic drive arms 140, 141 are rotated about their support shafts 140d, 141d, thereby the panoramic light shielding portion 142a , 143a are moved up and down so that the exposure screen is in a light-shielded or non-light-shielded state.

The panorama light-shielding portions 142a, 142
When the exposure screen is in the light-shielded or non-light-shielded state by 3a, the rotation operation of the second panorama drive arm 141 is performed by the stopper pins 200a, 20
0b. At this time,
When the rotation of the second panorama drive arm 141 is locked by the stopper pins 200a and 200b, the slip clutch mechanism operates and the driving force of the panorama motor 121 is cut off.

That is, the other end of the leaf spring 122c whose one end is fixed to a camera body (not shown) is attached to the rotating member 122e rotatably supported on the rotating shaft of the cam gear 122. Are always in contact with each other, and the rotating member 122e and the cam gear 122 are pressed against each other by the urging force of the leaf spring 122c. Then, the stopper pins 200a, 20
When a load is applied to the cam 122d by locking the rotation of the second panorama drive arm 141, the rotational slip between the cam member 122 and the rotating member 122e formed integrally with the cam 122d. As a result, the driving force of the panoramic motor 121 is cut off.

The operation of the thus configured electric panoramic driving device for a camera according to the second embodiment when the exposure screen is set in the light-shielded or non-light-shielded state will be described below. First, the case where the exposure screen is set in the light-shielding state will be described. When the panorama motor 121 is driven and the cam gear 122 is rotated in the counterclockwise direction, the rotation of the cam gear 122 and the rotation member 122 e and the cam 12 are performed.
2d also rotates counterclockwise, and the arm of the cam 122d
Since the cam surface C of the cam portion 140a of the first panorama drive arm 140 is pressed, the first panorama arm 140 is rotated clockwise about its support shaft 140d.
Thereby, one sector gear portion 140c of the first panorama drive arm 140 and the second panorama drive arm 1
41 is engaged with one of the sector gear portions 141a, so that the second panorama drive arm 141
It rotates counterclockwise about 41d. Then, the other sector gears 140b, 141b of the first and second panorama drive arms 140, 141 are connected to the rack portions 142 of the first and second panorama light shielding members 142, 143.
b and 143b, respectively, so that the panorama light-shielding portions 142b and 143b of the first and second panorama light-shielding members 142 and 143 are respectively moved in the direction of shielding the exposure screen. Then, the rotation operation of the second panorama drive arm 141 is locked by the stopper pin 200b, so that the slip clutch mechanism operates to bring the second panorama drive arm 141 into contact with the stopper pin 200b. Continuing, the spring 144
The light-shielding state in which the panorama light-shielding portion exposure screen is shielded by the urging force is maintained.

On the other hand, the case where the exposure screen is set in the non-light-shielded state will be described. When the panorama motor 121 is driven and the cam gear 122 is rotated clockwise,
With the rotation of the cam gear 122, the rotating member 122e and the cam 122d also rotate clockwise,
Of the first panorama drive arm 140
Since the cam surface D portion 40a is pressed, the first panoramic arm 140 is rotated counterclockwise about its support shaft 140d. Accordingly, one sector gear portion 140c of the first panorama drive arm 140 and one sector gear portion 141a of the second panorama drive arm 141
And the second panoramic drive arm 14
1 is rotated clockwise about its support shaft 141d. Then, the first and second panoramic drive arms 140,
Since the other sector gears 140b, 141b of 141 are engaged with the rack portions 142b, 143b of the first and second panoramic light shielding members 142, 143, respectively.
The panorama light-shielding portions 142b and 143b of the first and second panorama light-shielding members 142 and 143 are respectively moved in a direction in which the exposure screen is in a non-light-shielded state. When the rotation operation of the second panorama drive arm 141 is locked by the stopper pin 200a, the slip clutch mechanism operates to operate the second panorama drive arm 141.
1 is kept in contact with the stopper pin 200a,
The light-shielding state for shielding the panorama light-shielding portion exposure screen is maintained.

FIG. 12 is a flowchart of a subroutine (panorama ON2) showing control when the exposure screen is set in the light-shielded state in the electric panoramic driving device for a camera according to the second embodiment, and FIG. A subroutine showing control for setting a non-light-shielded state (panorama OFF
The flowchart of 2), that is, control of turning on (ON) or off (OFF) the output signal of the panorama motor 121 and control of the rotation direction are shown.

As shown in FIG. 12, first, when the exposure screen is set to the light-shielded state, in step S101, the control means 11 causes the motor drive circuit 18 to turn on the panorama motor 121 by the control means 11 to turn on the panorama motor 121. , The cam gear 122 is rotated clockwise, and at the same time, the rotating member 122e and the cam 122d are rotated.
Turn clockwise.

Next, in step S102, the electric panorama driving device 24 is driven to set the panoramic motor 121 to the light-shielding state for a predetermined time during which the panorama motor 121 is turned on (ON), that is, to make the exposure screen light-shielding. It is determined whether or not a predetermined time has elapsed, and after the exposure screen is in the light-shielded state and the predetermined time has elapsed, the process proceeds to step S103. In this step S103, the output signal of the panorama motor 121 is turned off. (OF
F), a series of processing ends (return).

As shown in FIG. 13, the subroutine (panorama OFF2) is a case where the exposure screen is in a non-light-shielded state, that is, a state of a normal exposure screen. The cam gear 122 is rotated counterclockwise by sending an ON signal for rotating the panoramic motor 121 from the motor drive circuit 18, and at the same time, the rotating member 122 e and the cam 122 d are also rotated counterclockwise. Rotate.

Next, in step S105, a predetermined time during which the panorama motor 121 is turned on (ON), that is, a predetermined time during which the electric panorama driving device 24 is driven in order to set the exposure screen in a non-light-shielded state. Has been determined, and after the exposure screen has been set in the non-light-shielded state and the predetermined time has elapsed, step S106 is performed.
In this step S106, the output signal of the panorama motor 121 is turned off (OFF), thereby ending a series of processes (return).

FIG. 14 is a flowchart of a subroutine (collapse 2) showing the operation when the taking lens of the camera of the second embodiment is collapsed and housed in the camera body. Note that a zoom lens is applied to the photographing lens in the camera of the second embodiment, similarly to the camera of the first embodiment. As shown in FIG. 14, first, in step S107, information on the current exposure screen size, that is, whether the currently set exposure screen performed by the electric panorama drive device 24 is in a light-shielded state or a non-light-shielded state EEPRO
It is written and stored in M17.

Next, in step S109, the subroutine (panorama OFF) described with reference to FIG.
By executing 2), the exposure screen is set to the normal exposure screen size, that is, the non-light-shielded state, and the process proceeds to step S110. In step S110, the motor driving circuit is controlled by the control unit 11 and As a result, when the output signal of the zoom motor 20 is turned on (ON), the driving in the direction of retracting the taking lens into the camera body, that is, the retracting operation is performed. Then, in the next step S111, the zoom motor 20 is driven until the completion of the retracting operation of the photographing lens is detected, and after the completion signal of the retracting operation of the photographing lens is detected,
Proceeding to the process of step S112, the output signal of the zoom motor 20 is turned off (OFF), thereby ending a series of processes of the retracting operation of the photographing lens (return).

As described above, the camera of the second embodiment can obtain the same effects as the camera of the first embodiment.

Further, the panorama motor 121 is slightly longer than the time required for switching the light-shielded / non-light-shielded state,
By driving in a clockwise or counterclockwise direction, light-shielding / non-light-shielding can be switched, and the panorama state SW2 applied in the first embodiment described above is used.
3 can be made unnecessary.

The slip clutch mechanism is provided just in case. The voltage to be supplied to the panorama motor 121 is kept low in advance, or the battery voltage itself is applied when the panorama motor 121 is started. In the subsequent driving, the driving is performed by a predetermined low voltage, and the stopper pins 200a and 200b are driven.
If the configuration is such that the motor through current at the time of rotation locking of the second panorama drive arm 141 is suppressed, the same applies without the provision of the slip clutch mechanism. Further, when the second panoramic drive arm 141 is rotationally locked by the stopper pins 200a and 200b, the panoramic motor 12
A planetary gear mechanism may be provided to transmit the first torque to another gear system.

[Supplementary Notes] (1) A photographing lens, photographing lens driving means for driving the photographing lens in the optical axis direction, a light-shielding member insertable into and removable from the photographing lens optical path, and insertion and removal of the light-shielding member. Light-shielding member driving means, and a photographing lens retracting instruction means for instructing to drive the photographing lens to the retracted area,
A photographic lens retractable camera wherein the photographic lens is retracted after retracting the light blocking member in response to an output of the photographic lens retracting instruction means. According to the collapsible camera described in Supplementary Note 1, upon collapsing of the taking lens,
There is no possibility of damaging the light shielding member.

(2) The retractable photographic lens camera according to the above item 1, wherein the light-shielding member is a member for setting a photographic screen to a panoramic size. According to the retractable camera described in the second appendix, the light-blocking member for setting the panorama size is not damaged when the photographing lens is retracted.

(3) a photographing lens, photographing lens driving means for driving the photographing lens in the optical axis direction, a light-shielding member which can be inserted into and detached from the photographing lens optical path, and a light-shielding member which inserts and removes this light-shielding member Driving means, photographing lens photographing area setting instructing means for instructing driving of the photographing lens from the retracted area to the photographing area, and a light shielding / non-light shielding instruction member determined before driving from the retracted area to the photographing area. A photographic lens collapsible camera comprising a light-shielding / non-light-shielding state indicating means, and driving the light-shielding member after driving the photographic lens from the collapsed area to the photographing area based on the output of the light-shielding / non-light-shielding state indicating means. According to the collapsible camera described in Supplementary Note 3, the light shielding member is not damaged when returning from the collapsed state to the photographing state.

(4) The light-shielding / non-light-shielding state indicating means is storage means for storing the light-shielding / non-light-shielding state of the camera before the retracting of the taking lens. According to the storage means of the collapsible camera described in the above Appendix 4, by storing the state of the photographing lens before collapsing, the photographing lens is moved to the photographing area again after collapsing the photographing lens, and photographing is performed. Can be automatically returned to the state before the last taking lens collapse.

(5) The retractable photographic lens camera according to claim 4, wherein the storage means is an electric nonvolatile memory.
According to the collapsible camera described in Supplementary Note 5, the memory can be held even when the power of the camera is off, so that the consumption of the battery is small.

(6) The light-shielding / non-light-shielding state instructing means is a state switch for storing the light-shielding / non-light-shielding state of the camera.

[0081]

As described above, according to the present invention, when retracting the taking lens in the taking lens retractable camera in which the light blocking member is driven by electric power, the light blocking member is first retracted. After that, the photographing lens is collapsed so that the light shielding member does not damage the photographing lens surface or damage the light shielding member due to the light shielding or non-light shielding operation of the exposure screen by the light shielding member or the collapse operation of the photographing lens. In addition, by realizing a deeper collapsible lens, it is possible to provide a more compact photographing lens collapsible camera.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a taking lens retractable camera according to the present invention.

FIG. 2 is a block diagram schematically showing an electric system in the camera according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a main part showing an appearance of a light shielding member driving unit (electric panoramic driving device) of the camera of FIG. 2;

FIG. 4 is a view for explaining the operation of first and second cams when the exposure screen is set to a light-shielded state or a non-light-shielded state in the light-shielding member driving means (electric panoramic driving device) of FIG.

FIG. 5 is a flowchart in a case where an exposure screen is in a light-shielding state in the light-shielding member driving means (electric panoramic driving device) of FIG. 3;

FIG. 6 is a flowchart in a case where an exposure screen is set to a non-light-shielded state in the light-shielding member driving unit (electric panoramic driving device) of FIG. 3;

FIG. 7 is a flowchart showing a collapsing operation of the taking lens in the camera of FIG. 2;

FIG. 8 is a flowchart showing an operation of the camera of FIG. 2 when setting a photographic lens to a photographic area.

FIG. 9 is a flowchart showing a modification of the operation of the camera shown in FIG. 2 when setting a photographic lens in a photographic area.

FIG. 10 is a diagram showing the effect of the first embodiment, showing an operation when the taking lens is retracted after the light shielding member is retracted.

FIG. 11 is an essential part perspective view showing the appearance of a light shielding member driving means (electric panoramic driving device) of a camera according to a second embodiment of the present invention.

FIG. 12 is a flowchart in the case where an exposure screen is set in a light-shielding state in the light-shielding member driving means (electric panorama driving device) of FIG. 11;

FIG. 13 is a flowchart in the case where the exposure screen is set to a non-light-shielded state in the light-shielding member driving means (electric panoramic driving device) of FIG. 11;

FIG. 14 is a flowchart showing the retracting operation of the taking lens in the camera of the second embodiment.

15A and 15B are diagrams illustrating an example of an operation of a conventional collapsible camera, in which FIG. 15A illustrates a case where a light-blocking member is inserted into an optical path of a photographing lens to set an exposure screen in a light-blocking state, and FIG. Is
FIG. 5 is a diagram showing a state in which the taking lens is retracted in the state of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Light-shielding member drive means 2 ... Photographing lens drive means 3 ... Photographing lens retracting instruction means 4 ... Light-shielding / non-light-shielding state detecting means 5 ... Photographing lens photographing area setting instruction means 6 ... Light-shielding / non-light-shielding instruction means (light-shielding member position designation) 11) Control means (CPU) 12 ... Power switch 13 ... Release switch 14 ... Panorama switch 15 ... Zoom up switch 16 ... Zoom down switch 17 ... EEPROM (storage means) 18 ... Motor drive circuit 19 ... Photographic lens drive (LD) ) Motor 20 ... Zoom motor 21 ... Panorama motor 23 ... Panorama state switch (light-shielding / non-light-shielding state detecting means) 22,122 ... Cam gear 22a ... First cam 22b ... Second cam 24 ... Electric panorama drive 40,140 ... 1 panoramic drive arm 41, 141 ... second panoramic drive arm 42 142 first panoramic light shielding members 43, 143 second panoramic light shielding members 42a, 43a, 142a, 143a panoramic light shielding portions 44, 144 spring 122c leaf spring (slip clutch mechanism) 122d cam (slip clutch mechanism) 122e ... Rotating member (slip clutch mechanism)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-186622 (JP, A) JP-A-2-178643 (JP, A) JP-A-5-34785 (JP, A) 62331 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) G03B 17/04 G02B 7/08 G03B 17/28

Claims (2)

(57) [Claims] A photographing lens for forming an image of a subject; photographing lens driving means for moving the photographing lens to at least two regions of a retracted position and a normal photographing position; A light shielding member; a light shielding member driving means having an electric driving means for inserting and removing the light shielding member into and from the optical path; and a light shielding / non-light shielding state detecting means for detecting a state of the light shielding member.
Step , collapsible instructing means for instructing to move the taking lens to the collapsible area, and in response to an instruction from the collapsible instructing means, retracts the light shielding member from the optical path to the light shielding member driving means. The light-shielding / non-light-shielding state detecting means detects
Control means for causing the photographing lens driving means to move the photographing lens to the collapsing area when it is detected that the evacuating operation has been completed . 2. A photographing lens for forming a subject image, photographing lens driving means for moving the photographing lens to at least two regions of a collapsed region and a normal photographing region, and a detachable and insertable optical path of the photographing lens. A light-shielding member, a light-shielding member driving unit having an electric driving unit for inserting and removing the light-shielding member in the optical path, and an instruction unit for instructing to move the photographing lens from the retracted region to the normal photographing region; A memory for storing the position of the light blocking member before the collapse of the photographing lens.
A light-blocking member position specifying means for specifying a position of the light-blocking member in accordance with a value stored in the storage means; and a normal photographing area from a collapsed position of the photographing lens in response to an instruction from the instruction means. Control means for driving the light shielding member by the light shielding member driving means based on the output of the light shielding member position designation means, after the photographing lens driving means performs the movement operation to the photographing lens driving means. Collapsible camera.