JPH1184596A - Film unit with lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film unit capable of exposing a dot mark which specifies the size of a print, even if a visual field regulating means is moved regardless of the fact that a charging switch is not operated even once. SOLUTION: An oblong hole 81 is provided in the lower half of a visual field switching plate 24, so as to surround an opening 42. In the oblong hole 81, an interlocking switch 73 for a stroboscope unit is arranged. Further, on the inside on one side of the oblong hole 81, two operating projections 82a and 82b which are abutted on the interlocking switch 73, to turn it on are integrally provided respectively. When the visual field switching plate 24 is moved from an H-size position to a C-size position, the operating projections 82a and 82b are moved integrally with the visual field switching plate 24 counterclockwise as well and the operating projections 82a is abutted on the switch 73, to push it and turn it on.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film unit with a lens for imprinting an optical mark for designating a print range on a photographic film.

[0002]

2. Description of the Related Art A film unit with a lens incorporates a simple photographing mechanism, an unused film cartridge, a strobe unit, and the like, and is widely used because it can be easily photographed by anyone.

In recent years, in order to further enhance the appeal and enjoyment of printed photographs, printed photographs having different aspect ratios according to the type and size of a photographed subject have been provided. As such a print photograph, an image is formed into a C-size print (89 mm) having a conventional aspect ratio.
X 127 mm), as well as a panoramic print (89 mm x 252 mm) with a doubled horizontal length, and a screen aspect ratio for high-definition television broadcasting, which is a standard size in APS (ADVANCED PHOTO SYSTEM), which has recently become popular. Approximate H size print (89 mm x 158
mm) etc. are generally known.

In order to obtain print photographs having different aspect ratios as described above, all frames are exposed at a full size corresponding to the H size print at the time of photographing, and a print range is designated when a print other than the H size print is designated. A method of recording information and printing each frame in a designated print range based on the information is performed.

In order to cope with the above-mentioned printing method,
In APS (ADVANCED PHOTO SYSTEM), a method of recording magnetic information on a transparent magnetic layer applied to a photographic film surface, and an optical method of exposing a 2-bit dot mark to a predetermined position outside an exposure range of each photographing frame. There is an objective recording method. Of these methods, the magnetic recording method requires a magnetic head and a circuit for recording information, and thus the latter optical recording method is generally used, particularly in a film unit with a lens provided at a low price.

An optical recording method of print size is to emit light from a light source provided in a film unit with a lens.
Exposure is performed as a 2-bit square dot mark at a predetermined position outside the exposure range of each photographing frame through a square slit or the like. For example, by exposing two dot marks when C size print is designated, exposing one dot mark when panoramic print is designated, and not exposing dot marks when H size print is designated, Record the print size.

As a light source used in such an optical recording method, there is a light bulb or an LED. However, since the light bulb has a slow lighting speed from conduction to high emission luminance, it must be kept on for a certain period of time. It is more common to use fast LEDs. However, since the operating voltage of the LED needs to be at least about 3 V, it is necessary to use 1.5 V for the strobe light.
When an LED is incorporated in a film unit with a lens having only a built-in dry cell, for example, Japanese Patent Application Laid-Open No. 9-436
As described in, for example, Japanese Patent Application Publication No. 94-94, there is known a method of causing an LED to emit light by using a booster circuit of a strobe unit.

According to this, an automatic rechargeable strobe unit is provided in which the main capacitor is started to be recharged in synchronization with the strobe light emission, so that the main capacitor is always charged and the main capacitor is charged. The voltage / current is reduced to a predetermined voltage by a Zener diode, and is used as the starting power of the LED.

[0009]

However, in the above-mentioned strobe unit, the recharge of the main condenser is started in synchronization with the strobe light emission, so that the charge switch which is necessary only for the first strobe photographing is operated. Until, the main capacitor is not charged. For this reason, if photographing without a strobe is performed by designating a C-size print or a panoramic print before the first strobe photographing is performed, a problem arises in that a predetermined dot mark that designates a print size is not exposed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a lens capable of exposing a dot mark for designating a print size even if a visual field restricting means is moved without operating a charge switch even once. It is an object of the present invention to provide an attached film unit.

[0011]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a strobe unit comprising a power supply, a main condenser, a strobe discharge tube, etc., in which an unexposed photographic film is stored in advance. A finder having a field of view corresponding to a standard exposure size, a field-of-view restricting means operable to switch to a position for restricting the field of view of the viewfinder,
In a film unit with a lens configured to expose a dot mark designating a print range on the photographic film in accordance with an operation position of the visual field restricting means, electricity charged in the main capacitor is supplied to the light source for the dot mark exposure. An interlocking switch is provided to start charging the main capacitor of the strobe unit when the power is turned on and the view restricting means is operated in a direction for restricting the view range of the viewfinder.

Further, in the invention according to claim 2, the interlock switch is turned on by an operation projection provided on a view restriction plate which is inserted into and removed from the front of the viewfinder and has an opening for limiting the view range of the viewfinder. It is designed to be turned off.

According to the third aspect of the present invention, at least two or more of the dot mark exposing light sources are provided, and each of the dot mark exposing light sources is turned on in the view restriction plate.
An operation cam for operating a mark exposure light source switch to be turned off is provided. According to a fourth aspect of the present invention, the light source for dot mark exposure is an LED.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of a film unit with a lens according to the present invention will be described below. FIG. 2 is a perspective view showing the appearance of the film unit with a lens according to the present invention.
Is an exploded perspective view thereof. The lens-equipped film unit 30 has a front surface on which a photographing lens 1, an object-side finder window 2, a strobe light-emitting unit 3, a strobe charging operation member 4, a finder switching operation knob 5, and the like are exposed. A shutter button 6, a counter window 7, a strobe charging completion display window 8 and the like are provided on the upper surface, and a winding knob 1 is provided on the rear side.
0, an eyepiece side finder window 11 (see FIG. 3) and the like are provided.

As shown in FIG. 3, the lens-fitted film unit 30 includes a main body base 13, an exposure unit 14, a strobe unit 15, a data exposure unit 61, a front cover 16, and a rear cover 17. The data exposure unit 61 exposes a 2-bit dot mark for designating a print size outside the subject exposure range of each frame of the photo film 18b. Also, the main body base 1
3, a photo film cartridge 18 including a cartridge 18a and a photo film 18b is loaded.

As shown in FIG. 4, the front cover 16 includes a front cover body 19 and a front panel 20 attached to the front of the front cover body 19.
Has a finder opening 21 having the same shape as the objective-side finder window 2 formed in the front panel 20. A field switching plate 24 and a toggle spring 25 are incorporated between the front cover body 19 and the front panel 20.

The strobe charging operation member 4 is attached to the front side of an opening 22 formed in the front cover main body 19.
Then, the pressing operation of the strobe charging operation member 4 presses the metal contact piece 35 of the strobe unit 15 shown in FIG.
The charging switch 65 including the contact 5 and the contact portion 37 is turned on. As a result, the flash unit 15 continuously performs flash charging. The strobe unit 15 in the present embodiment is of a type that is fully charged only by pressing the strobe charging operation member 4 once. When the charging is completed, the charging completion lamp 9 is turned on, and the completion of charging is displayed through the strobe charging completion display window 8.

FIG. 5 shows a film unit 30 with a lens.
FIG. 3 is a circuit diagram showing an electrical configuration of the embodiment. The electric circuit of the lens-fitted film unit 30 includes a strobe circuit 62 forming the strobe unit 15 and a data exposure circuit 63 forming the data exposure unit 61. The strobe circuit 62 includes a transformer 64 for boosting, a charging switch 6
5, a main capacitor 66, a synchro switch 67 that is turned on in conjunction with a shutter release, a trigger capacitor 68, a diode 69, a charging completion lamp 9, a strobe discharge tube 71, a dry battery 72 as a power supply, and a charging switch 6.
5 and the like.
The interlock switch 73 is turned on and off in conjunction with the movement of a field switching plate 24 described later.

The data exposure circuit 63 constituting the data exposure unit 61 includes a strobe unit 1 as an operating power supply.
The high voltage current charged in the main capacitor 66 of No. 5 is used. The data exposure circuit 63 includes a zener diode 75 for lowering the voltage of the high-voltage current from the main capacitor 66 and two LEs, which are light sources for dot mark exposure, for exposing a dot mark to each frame of the photographic film 18b.
D76, 77, and a mark exposure light source switch 78, which controls on / off of the LEDs 76, 77, respectively.
Consists of 79 mag. These mark exposure light source switches 78, 7
9 is turned on in conjunction with the movement of a field switching plate 24 described later,
Turn off.

The field switching plate 24 is formed of the same plastic as the front cover body 19 and the front panel 20 into a substantially disc shape, and a circular opening 42 formed in the center portion has a lens mirror of the front cover body 19. By being fitted to the outer periphery of the cylinder 23, it is rotatably attached to the front cover main body 19. The toggle spring 25 is configured such that a pin 44 on the front surface of the front cover body 19 is inserted into a coil portion 43 formed at one end, and the other end 45 is inserted into a hole (not shown) of the view switching plate 24 to switch the view. The plate 24 is urged in a direction to sandwich the intermediate position.

At the lower part of the front surface of the field switching plate 24, a boss 48 is provided.
The boss 48 is formed integrally with the front panel 2.
Arc-shaped slit 5 formed below the 0 convex portion 49
0 is inserted. A finder switching operation knob 5 formed larger than the boss 48 is attached to the boss 48 inserted into the slit 50 from the front side of the front panel 20. As described above, by using the field switching plate 24 and the finder switching operation knob 5 as separate components, the width of the slit 50 of the front panel 20 can be reduced without sacrificing the operability of the finder switching operation knob 5. Therefore, it is possible to prevent the light-shielding property in the lens-equipped film unit 30 from deteriorating.

On the outer peripheral portion of the upper half of the field switching plate 24,
Between the finder window 2 on the objective side and the finder opening 21,
A panorama-size (P-size) finder frame 54 having an aspect ratio of 3.0, which is a switching finder frame, which is inserted / removed in front of an objective-side finder lens 52 incorporated in the exposure unit 14, and an aspect ratio of 1.5. A C size finder frame 55 is formed. A cutout 56 is formed between the panoramic finder frame 54 and the C-size finder frame 55 to open between the objective finder window 2 and the eyepiece finder window 11, which are standard finder frames. Have been.

In the film unit with lens 30 of this embodiment, the standard size is a high-definition size (H size) having an aspect ratio of 1.8, and the object-side finder window 2 which is a standard finder frame has an aspect ratio of 1.8.
It has been. For this reason, as shown in FIG. 6, the lens-equipped film unit 30 at the start of use has the notch 36 of the visual field switching plate 24 facing the objective side finder window 2, so that the eyepiece side finder window 2 and the objective side finder Window 11
Is opened, and the visual field range becomes the H size.

Further, the finder switching operation knob 5 is operated to rotate the visual field switching plate 24, as shown in FIG.
The viewfinder frame 55 for C size is attached to the eyepiece side viewfinder window 11.
When inserted between the finder window 2 and the objective side finder window 2, the field of view becomes C size. Further, as shown in FIG. 8, when the P size finder frame 54 is inserted between the eyepiece side finder window 11 and the object side finder window 2, the visual field range becomes P size.

As described above, the notch 36 for opening the objective side finder window 11 which is a standard finder frame is provided between the C size finder frame 55 and the P size finder frame 54 which are finder frames for switching. Is provided, the operation amount of the finder switching operation knob 5 when switching from the standard finder frame to the finder frame of each size becomes substantially the same.

As shown in FIG. 6, an elongated hole 81 is provided in the lower half of the field switching plate 24 so as to surround the opening 42. The interlock switch 73 of the flash unit 15 is arranged in the elongated hole 81. On one inner side of the elongated hole 81, two operation projections 82a and 82b that come into contact with the interlock switch 73 to turn on the interlock switch 73 are provided integrally.

When the visual field switching plate 24 is in the position corresponding to the H size, the operation projections 82a and 82b are at positions where the interlocking switch 73 is sandwiched in the middle, and the interlocking switch 73 is kept in the off state. (FIG. 6). Then, when the finder switching operation knob 5 is operated to move the visual field switching plate 24 from the H size position to the C size position, the operation protrusions 82a and 82b are also integrated with the visual field switching plate 24 as shown in FIG. To the operation protrusion 82
a contacts and presses the interlock switch 73 to turn on the interlock switch 73.

The interlocking switch 73 is an equivalent switch in parallel with the charging switch 65 as shown in the circuit diagram of FIG. 5, so that when the interlocking switch 73 is turned on, the charging switch 65 operated by the flash charging operation member 4 is turned on. However, the main capacitor 66 is charged. When the visual field switching plate 24 is continuously moved to the position of the C size, the operation projection 82a immediately passes through the interlock switch 73, and the interlock switch 73 is turned off. , The charging is completed without pressing the interlocking switch 73 continuously, and the charging completion lamp 9 is turned on.

On the other hand, when the finder switching operation knob 5 is operated to move the field switching plate 24 from the H size position to the P size position, as shown in FIG.
The operation projections 82a and 82b formed integrally with the display 4 also move clockwise integrally with the visual field switching plate 24. Then, the operation protrusion 82b comes into contact with and presses the interlock switch 73, and the interlock switch 73 is turned on. When the charging of the main capacitor 66 is completed, the charging completion lamp 9 is turned on.

FIG. 1 is a perspective view schematically showing a data exposure unit. Data exposure circuit 6 shown in the circuit of FIG.
Reference numeral 3 includes a zener diode 75, LEDs 76 and 77, and mark exposure light source switches 78 and 79. LE
D76 and D77 are held in parallel with the LED holder 84. The LED holder 84 is attached to a lower part of an aperture 85 which is an exposure light path provided at the center of the main body base 13. On the other hand, the LED on the side of the aperture 85
A square dot hole 86 is provided in the mounting portion of the holder 84.
The slit plate 87 in which two a and 86b are formed in parallel is provided integrally.

Dot holes 86a, 86 on slit plate 87
“b” is formed so as to be located on the optical path of the LEDs 76 and 77 when the LED holder 84 is attached to the lower part of the aperture 85. By this, LED7
When 6, 77 is turned on, a dot mark of substantially the same size as the dot holes 86a, 86b is exposed outside the subject exposure range of the photographic film 18b set in the aperture 85.

The dot mark exposed by each of the LEDs 76 and 77 expresses one bit of information depending on whether or not the dot mark is exposed. In APS,
For example, when the H size print is designated, the dot marks are not exposed, and when the P size print is designated, one dot mark is exposed. Further, when the C size print is designated, two dot marks are exposed. As a result, the print size is specified at the time of printing.

Each LED is provided below the field switching plate 24.
Mark exposure light source switches 78 and 79 for switching on and off of 76 and 77 are provided. Also, cam portions 87a and 87 for operating such mark exposure light source switches 78 and 79 are provided on the lower peripheral edge of the field switching plate 24.
87b is integrally provided. These cam portions 87a, 87b
Are in contact with the mark exposure light source switches 78 and 79 by the rotation of the field switching plate 24,
Turn 79 on and off. The cam portion 87a extends to a position where both the mark exposure light source switches 78 and 79 are pressed to be turned on when the visual field switching plate 24 is set at the position of C size printing. Also, the cam portion 87
b extends to a position where only the mark exposure light source switch 79 is pressed to be turned on when the visual field switching plate 24 is set at the P size print position.

With such a configuration, when the visual field switching plate 24 is set at a position corresponding to H-size printing, the cam portions 87a and 87b are located so as to sandwich the mark exposure light source switches 78 and 79 in the middle. The mark exposure light source switches 78 and 79 are both kept off (FIG. 6). Then, the finder switching operation knob 5
Is operated to move the visual field switching plate 24 from the H size position to the C size position, so that the cam portion 87a comes into contact with and presses the mark exposure light source switches 78 and 79 as shown in FIG. The mark exposure light source switches 78, 7
9 are both turned on.

When the finder switching operation knob 5 is operated to move the visual field switching plate 24 from the H size position to the P size position, as shown in FIG. , And only the mark exposure light source switch 79 is turned on.

The operation of the lens-fitted film unit having the above structure will be described. When taking a picture using the film unit with lens 30 of the present invention, first,
The first shooting frame is set on the aperture 85 by rotating the winding knob 10 until it stops. Next, the photographer looks into the eyepiece side finder window 11 and checks the photographing range of the subject. In the film unit 30 with the lens, the field-of-view switching plate 24 is set at the position of the H size at the sales stage.
Therefore, at the time of this first photographing, as shown in FIG. 6, the notch 56 for opening the space between the objective-side finder window 2 and the eyepiece-side finder window 11 is provided in front of the finder opening 21. Located on the eyepiece side viewfinder window 11
The field of view of the viewfinder viewed from above is H-size, which is the field of view that is the viewfinder's original view.

However, for example, when the width of the subject is narrow, C
When a size print is desired, the photographer turns the finder switching operation knob 5 to the position of the C size print. Then, as shown in FIG.
A and 82b also move counterclockwise integrally with the visual field switching plate 24, and the operation projection 82a contacts and presses the interlock switch 73, thereby turning on the interlock switch 73. When the interlock switch 73 is turned on, the main capacitor 66 is charged even if the charging switch 65 operated by the flash charging operation member 4 is not turned on.

As shown in FIG. 7, when the field switching plate 24 is set at the position of the C size, the C size finder frame 55 is moved to the eyepiece side finder window 11 and the objective side finder window 2.
And a part of both sides of the finder opening 21 is covered with the C-size finder frame 55, and the finder changes to a visual field range corresponding to the C-size print.
When the field switching plate 24 is set at the position of the C size, the cam portion 87a of the field switching plate 24 comes into contact with and presses the mark exposure light source switches 78 and 79 of the data exposure unit 61, and the mark exposure is performed. Light source switch 78, 7
9 are both turned on.

When the photographer checks the subject by looking through the finder having a C-size field of view, and presses the shutter button 6, the shutter mechanism (not shown) operates to operate the first camera.
Exposure to the shooting frame is performed. Further, since the interlocking switch 73 is turned on by the rotation of the visual field switching plate 24 and the main capacitor 66 is fully charged, the synchro switch 67 operates simultaneously with the pressing of the shutter button 6, and the strobe discharge tube 71 emits light. Then, flash photography is performed.

When the sync switch 67 operates with the main capacitor 66 fully charged, a high voltage current also flows through the data exposure unit 61 connected to the main capacitor 66. Then, the voltage is reduced by the Zener diode 75. Since the mark exposure light source switches 78 and 79 are pressed by the cam portion 87a of the visual field switching plate 24 and both are turned on, the current stepped down by the Zener diode 75 flows through the LEDs 76 and 77, and the LEDs 76 and 77 Emits light. The LEDs 76 and 77 reach the photographic film 18b through the dot holes 86a and 86b of the mask plate 87. As a result, as shown in FIG. 11A, the first photographing frame 1 set in the aperture 85
Two dot marks 89a designating C-size printing are exposed on a data exposure area 18d set outside the subject area 8c.

On the other hand, when a P size print is desired because the subject is wide in the first photographing frame, the photographer turns the finder switching operation knob 5 to the P size print position. Then, as shown in FIG. 10, the operation protrusions 82a and 82b also move counterclockwise integrally with the visual field switching plate 24. Then, the operation protrusion 82b comes into contact with and presses the interlock switch 73, and the interlock switch 73 is turned on. When the interlock switch 73 is turned on, the main capacitor 66 is charged even if the charging switch 65 operated by the flash charging operation member 4 is not turned on.

As shown in FIG. 8, when the field switching plate 24 is set at the position of the P size, the P size finder frame 55 is moved to the eyepiece side finder window 11 and the objective side finder window 2.
And the upper and lower portions of the finder opening 21 are covered by a P-size finder frame 54 by a fixed width, and the finder changes to a visual field range corresponding to P-size printing.
When the field switching plate 24 is set at the position of the P size, the cam portion 87b of the field switching plate 24 comes into contact with and presses the mark exposure light source switch 79 of the data exposure unit 61. Only turns on.

When the photographer checks the subject by looking through the finder having a P-size visual field, and presses the shutter button 6, the shutter mechanism (not shown) operates to operate the first shutter.
Exposure to the shooting frame is performed. Further, since the interlocking switch 73 is turned on by the rotation of the visual field switching plate 24 and the main capacitor 66 is fully charged, the synchro switch 67 operates simultaneously with the pressing of the shutter button 6, and the strobe discharge tube 71 emits light. Then, flash photography is performed.

When the sync switch 67 operates while the main capacitor 66 is fully charged, a high voltage current also flows through the data exposure unit 61 connected to the main capacitor 66. Then, the voltage is reduced by the Zener diode 75. Since the mark exposure light source switch 79 is turned on by being pressed by the cam portion 87b of the field switching plate 24, the current stepped down by the Zener diode 75 flows through the LED 77, and only the LED 77 emits light. The LED 77 reaches the photographic film 18b through the dot hole 86b of the mask plate 87. As a result, FIG.
As shown in (B), a P size print is designated in the data exposure area 18d set outside the subject area of the first photographing frame 18c set in the aperture 85.
The dot marks 89b are exposed.

As described above, at the time of photographing the first photographing frame in the film unit with lens immediately after the start of use, when the main condenser 66 is not charged, the photographer operates the strobe charging operation member 4 without operating the strobe charging operation member 4. Even if an attempt is made to perform photographing by specifying a size or a P-size print, the interlock switch 73 provided in parallel with the charge switch 65 is turned on when the visual field switching plate 24 is operated, and the main capacitor 66 is charged. Therefore, when a C-size or P-size print is designated at the time of photographing the first photographing frame, a dot mark designating each print is not exposed.

When the H-size print is selected at the time of photographing the first photographing frame, the main condenser 66 is not charged unless the strobe charging operation member 4 is operated because the visual field switching plate 24 is not operated. 11
As shown in (C), the H size print is designated by exposing no dot mark in the data exposure area 18d set outside the subject area of the first photographing frame 18c, so that the main capacitor 66 is charged. There is no problem if it is not performed.

In the above-described embodiment, a 2-bit dot mark designating a print size is replaced with two LEs.
D was used to expose a photographic film.
A description will be given of a lens-fitted film unit according to a second embodiment in which a 2-bit dot mark is recorded by using a light guide member and a mark switching plate using a plurality of LEDs.

FIG. 12 is an external perspective view showing a film unit with a lens according to the second embodiment. The lens-fitted film unit 100 has a photographic lens 10 on the front.
1, objective side finder window 102, strobe light emitting section 10
3, a strobe charging operation member 104, a finder switching operation knob 105, and the like are provided. A shutter button 106, a counter window 107, an opening 109 for a strobe charging completion display member 108, and the like are provided on the upper surface, and a wind-up device is provided on the back side. A knob 110, an eyepiece side finder window 111 (see FIG. 13) and the like are provided.

The strobe charging operation member 104 is slidable up and down, and is slid upward when using the strobe. When the strobe charging operation member 104 is slid upward, a strobe charging completion display member 108 protrudes from an opening 109 formed on the upper surface of the film unit 100 with a lens, as shown by a two-dot chain line in the figure. Is done. The flash charging completion display member 108 emits light when the flash charging is completed, and notifies the photographer and the subject that the flash charging has been completed.

As shown in FIG. 13, the lens-fitted film unit 100 has a main body base 113, an exposure unit 114, a strobe unit 115, and a front cover 11 similarly to the lens-fitted film unit 1 described in the above embodiment.
6, and a rear cover 117. Body base 1
A photographic film cartridge 18 includes a cartridge 18a and a photographic film 18b, which are the same as those loaded in the lens-fitted film unit of the embodiment.
Is loaded.

As shown in FIG. 14, the front cover 116
The front cover body 119 comprises a front cover body 119 and a front panel 120 attached to the front surface of the front cover body 119. The front cover body 119 has a finder opening 118 having the same shape as the object side finder window 102 formed in the front panel 120.
Are formed. Further, between the front cover main body 119 and the front panel 120, a strobe charging operation member 104 is provided.
, The field switching plate 123 and the toggle spring 124 are incorporated.

The strobe charging operation member 104 is attached to the front side of an opening 121 formed in the front cover main body 119, and is exposed from the front cover 116 to be actually operated, and a front surface of the front cover main body 119. , And an engaging portion 130 that is inserted into a slit 128 formed on the front surface of the front cover main body 119 and engages with a pin 129 formed integrally with the strobe charging completion display member 108. . Flash charging operation member 1
04 is slidable in the vertical direction along the slit 128 of the front cover main body 119.

A slit 132 extending in the vertical direction is formed in the substrate portion 127, and a pin 133 projecting from the front surface of the front cover body 119 is inserted into the slit 132. Then, when the strobe charging operation member 104 slides in the vertical direction, the recess formed on the inner wall surface of the slit 132 engages with the pin 133, and gives a click feeling to the sliding operation of the strobe charging operation member 104.

The operation section 126 is disposed so as to face the opening 121 of the front cover body 119, and has an opening 121
To press the metal contact 135 of the strobe unit 115 shown in FIG.
Protrusions (not shown) that come into contact with 37 are formed.
The flash unit 115 in this embodiment is of a type that is fully charged by pressing the flash charging operation member 4 once.

The strobe charging completion display member 108 is formed of a transparent plastic, and is engaged with a mounting portion 139 which is slidably mounted on the exposure unit shown in FIG. The pin 129 that engages with the unit 130 and the charging completion display light emitting element (not shown) attached to the back of the circuit board 136 when slid upward by the strobe charging operation member 104. Film unit with lens 1 that guides light of light emitting element by internal reflection
And a light guide section 140 for radiating the light to outside 00.

When the flash charging operation member 108 is slid upward, the upper end of the light guide portion 140 projects from the upper surface of the film unit 100 with the lens. The shape is such that the light of the light emitting element can be emitted toward.

FIG. 15 shows a film unit 1 with a lens.
FIG. 2 is a circuit diagram showing an electrical configuration of a circuit 00. The electric circuit of the film unit with lens 100 is the strobe unit 1
15 and the data exposure circuit 1
91. As in the first embodiment, the strobe circuit 62 includes a transformer 64 for boosting and a charging switch 6.
5, a main capacitor 66, a synchro switch 67 which is turned on in conjunction with a shutter release, a trigger capacitor 68, a diode 69, a strobe discharge tube 71, a dry battery 72 as a power source, and an interlocking switch 192 in parallel with the charging switch 65. Have been. The interlock switch 192 is turned on and off in conjunction with the movement of a field switching plate 123 described later.

The data exposure circuit 191 uses a high voltage current charged in the main capacitor 66 of the strobe unit 15 as an operation power supply. This data exposure circuit 1
Reference numeral 91 denotes a zener diode 75 for lowering the voltage of the high voltage current from the main capacitor 66, and a photo film 18b.
And an LED 193, which is a light source for dot mark exposure, for exposing a dot mark to each frame.

The field switching plate 123 includes a front cover body 119.
And the same plastic as the front panel 120 is formed into a substantially disk shape, and a circular opening 142 formed in the center portion is provided with the lens barrel 122 of the front cover main body 119.
Of the front cover body 119
It is rotatably attached to the. The toggle spring 124 has a coil portion 143 formed at one end, the pin 144 on the front surface of the front cover body 119 is inserted, and the other end 145 is inserted into the hole 146 of the view switching plate 123, so that the view switching plate 123 is intermediate. It is urged in two directions sandwiching the position.

At the lower part of the front surface of the field switching plate 123, a boss 1 is provided.
48 are integrally formed, and the boss 148 is inserted into an arc-shaped slit 150 formed below the projection 149 of the front panel 120. The boss 148 inserted into the slit 150 is inserted into the boss 148 from the front side of the front panel 120.
A finder switching operation knob 105 formed larger than the boss 148 is attached. As described above, the field switching plate 123 and the finder switching operation knob 105 are formed as separate components, so that the operability of the finder switching operation knob 105 is not sacrificed, and
Since the width of the 0 slit 150 can be reduced,
Deterioration of the light blocking ability in the lens-fitted film unit 100 can be prevented.

At the outer peripheral portion of the field switching plate 123, between the objective side finder window 102 and the finder opening 118,
A panorama-size (P-size) finder frame 1 having an aspect ratio of 3.0, which is a switching finder frame inserted and removed in front of the objective-side finder lens 152 incorporated in the exposure unit 114, that is, on the optical axis of the finder optical system.
54, and a C-size finder frame 155 having an aspect ratio of 1.5 are formed. A cutout 156 is formed between the panoramic finder frame 154 and the C-size finder frame 155 to open between the objective finder window 102 and the eyepiece finder window 111 which are standard finder frames. Have been.

In the film unit with lens 100 of this embodiment, the standard size is a high definition size (H size) having an aspect ratio of 1.8, and the objective side finder window 102, which is a standard finder frame, has an aspect ratio of 1.8. Have been. Therefore, as shown in FIG. 16, the film unit with lens 100 at the start of use is provided with the notch 1 of the visual field switching plate 123 in the objective side finder window 102.
Since 56 faces each other, the space between the eyepiece side finder window 102 and the object side finder window 111 is opened, and the visual field range becomes H size.

The finder switching operation knob 105
Is operated to rotate the visual field switching plate 123, and the C size finder frame 155 is inserted between the eyepiece side finder window 111 and the objective side finder window 102 as shown in FIG. As shown in FIG. 18, when the P size finder frame 154 is inserted between the eyepiece side finder window 111 and the object side finder window 102, the field of view becomes P size.

As described above, the notch 156 for opening the objective side finder window 102 which is a standard finder frame is provided between the C size finder frame 155 and the P size finder frame 154 which are finder frames for switching. With this arrangement, the operation amount of the operation knob 105 when switching from the standard finder frame to each of the switching finder frames is substantially the same.

An interlock switch 192 for the strobe unit 115 is disposed below the field switching plate 123. An interlocking switch 192 is provided on the outer periphery of the visual field switching plate 123.
And two operation projections 194a and 194b for turning on the interlocking switch 192 in contact with the operation switch 192.

When the field switching plate 123 is set at the position corresponding to the H size, the operation protrusions 194a and 194b are at positions where the interlocking switch 192 is sandwiched in the middle, and the interlocking switch 192 is kept off. (Figure 1
6). Then, by operating the finder switching operation knob 105, the visual field switching plate 123 is moved from the H size position to the C position.
When moved to the position of the size, as shown in FIG. 20, the operation protrusions 194a and 194b also move counterclockwise integrally with the visual field switching plate 123, and the operation protrusion 194a moves
2 and is pressed, and the interlock switch 192 is turned on.

Since the interlock switch 192 is an equivalent switch in parallel with the charge switch 65 as shown in the circuit diagram of FIG. 15, when the interlock switch 192 is turned on, the charge switch 65 operated by the flash charging operation member 104 is turned on.
Is not turned on, the main capacitor 66 is charged. When the visual field switching plate 123 is continuously moved to the position of the C size, the operation protrusion 194a immediately passes through the interlock switch 192, and the interlock switch 192 is turned off. However, the strobe unit 115 operates the strobe charging operation member 104 as described above. Is fully charged just by pressing once, so that the full charge can be achieved without continuously pressing the interlock switch 192.

On the other hand, the finder switching operation knob 105
To move the visual field switching plate 123 from the H size position to P
When moved to the position of the size, as shown in FIG. 21, the operation protrusions 194a, 194 formed integrally with the visual field switching plate 123.
4b also moves clockwise integrally with the field switching plate 123.
Then, the operation protrusion 194b comes into contact with and presses the interlock switch 192 to turn on the interlock switch 192. Then, the main capacitor 66 is charged.

A cam groove 158 is formed on the outer periphery of the opening 142 of the visual field switching plate 123. The cam groove 158 is a bent locking groove whose distance from the center of the opening 142 is changed. In this cam groove 158, as shown in FIG.
Of the two arms 161 and 162 formed on the rotating lever 160 attached to the main body base 113, a pin 163 serving as an engagement pin formed on one of the arms 161.
Is inserted. Also, one inner wall surface 15 of the cam groove 158
8a, a recess 158 into which the pin 163 is engaged is provided.
b is formed.

As shown in FIG. 19, the rotating lever 16
0 is a light-shielding cylinder 1 provided at the center of the front surface of the main body base 113.
It is pivotally supported by a pin 166 protruding above 65. A pin 163 formed at the tip of one arm 161 of the rotating lever 160 is provided with a notch 168 formed below the finder lens frame 167 of the exposure unit 114 and a finder window 118 of the front cover main body 119. Through the cam groove 158 of the visual field switching plate 123. Thus, when the field switching plate 123 rotates, the pin 163 moves in a direction substantially orthogonal to the rotation of the cam groove 158, as shown in FIGS. Rotate.

The other arm 162 of the rotating lever 160
A pin 170 formed at the tip of the lever engages a fork portion 172 formed at one end of a slide lever 171 that is slidably mounted in the left and right direction below the light shielding cylinder 165. Accordingly, the slide lever 171 slides in the left-right direction in conjunction with the rotation of the rotation lever 160.

Below the light-shielding tube 165, two printing openings 174 and 175 for printing an optical mark indicating a print range on the photographic film 18b are formed. A mark switching plate 177 made of a thin plastic film or the like having a light-shielding property is slidably attached to the front sides of the projection openings 174 and 175 in the left-right direction. The mark switching plate 177 has an opening 178 for opening the printing opening 174 at a specific slide position. Also, this mark switching plate 1
A pin 180 formed at the other end of the slide lever 171 is engaged with a hole 179 formed at the end of the slide lever 171, and slides together with the slide lever 171.

On the front side of the mark switching plate 177, a light guide 182 and a light shielding cover 183 are attached.
The light guide 182 is formed of a transparent plastic, and is provided on the circuit board 13 of the strobe unit 115.
The light emitted from the mark imprinting light emitting element 184 attached to the back side of the light guide 6 is internally reflected and guided, and is emitted from the imprinting openings 174 and 175 toward the photographic film 18b. In addition, the light emitting element 1 for imprinting a mark
A flash 84 emits light in conjunction with the synchro switch 186 of the flash unit 115 which is turned on when the shutter is released, regardless of whether the flash is used or not.

The light-shielding cover 183 is
4,175, the mark switching plate 177, and the light guide 18
2 is mounted on the main body base 113 so as to cover the camera film 2 and shields the external light that has entered the film unit 100 with the lens from passing through the projection openings 174 and 175 to reach the photographic film. The light-shielding cover 183 has a cylindrical portion 185 into which the light-emitting element 184 for imprinting a mark is inserted.
Are formed integrally, and although not shown in detail, a light-shielding material such as a malt plane is wound around a terminal portion of the light-emitting element 184 to prevent light from the light-emitting element 184 from leaking from the cylindrical portion 185. Light is shielded so that outside light does not enter the cylindrical portion 184.

The slide lever 171 is connected to the light shielding cover 18.
3 is slidably mounted on the front side in the left-right direction. Further, the other end of the coil spring 188 whose one end is hung on the light shielding cover 183 is urged rightward in the figure by being hung on the pin 189. Thus, the pin 163 of the arm portion 161 of the rotating lever 160 always comes into contact with one inner wall surface 158a of the cam groove 158 of the visual field switching plate 123, and the rotation of the visual field switching plate 123 is reliably switched to the mark. Can be transmitted to the plate 177.

As shown in FIG. 16, when the finder switching knob 105 is operated so that the notch 156 faces the objective-side finder window 102 and the finder field of view becomes H size, the spring 188 causes the finder switching knob 105 to be turned counterclockwise in the figure. The pin 163 of the biased rotating lever 160 engages with a concave portion 158b formed on one inner wall surface 158a of the cam groove 158. Thus, a click feeling is given to the finder switching operation knob 105 and the finder field of view is H
The field-of-view switching plate 123 is positioned at a position corresponding to the size.

When the pin 163 of the rotating lever 160 is engaged with the concave portion 158b, the slide lever 171 slid by the rotating lever 160 is moved to the mark switching plate 17.
7, the mark switching plate 177 closes the projection openings 174 and 175. As a result, as shown in FIG. 11C, the data exposure area 18d set outside the subject area of the first photographing frame 18c of the photographic film 18.
Has no dot mark on it.

As shown in FIG. 20, when the finder switching operation knob 10 is operated in the C size direction, the operation projection 194a comes into contact with the interlock switch 192 to turn on the interlock switch 192, and the main capacitor 66 is charged. Done. Then, as shown in FIG.
23 is urged by a toggle spring 124 in a counterclockwise direction in the figure, and one end 158 c of the cam groove 158 is
0 pin 163. As a result, the field switching plate 123 is positioned at a position where the finder field has the C size. At this time, the mark switching plate 177 opens the projection openings 174 and 175. As a result, as shown in FIG. 11A, the data exposure area 18d set outside the subject area of the first photographing frame 18c has C
Two dot marks 89a designating the size print are exposed.

As shown in FIG. 21, when the finder switching operation knob 10 is operated in the P size direction,
This time, the operation protrusion 194b contacts the interlock switch 192, the interlock switch 192 is turned on, and the main capacitor 66 is charged. Then, as shown in FIG. 18, the visual field switching plate 123 is urged clockwise in the figure by the toggle spring 124, and the other end 158 d of the cam groove 158 contacts the pin 163 of the rotating lever 160. Thus, the field switching plate 123 is positioned at a position where the finder field has a P size. At this time, the mark switching plate 17
7 closes the projection opening 174, and
Release 5. Thus, the photo film 18b has
As shown in FIG. 11B, a data exposure area 18d set outside the subject area of the first photographing frame 18c includes
One dot mark 89b specifying P size print
Is exposed.

As described above, also in the second embodiment, when the first condenser frame is photographed in the film unit with lens 100 immediately after the start of use, the photographer does not charge the main condenser 66, and the photographer charges the flash. Even if an attempt is made to perform C-size or P-size printing without operating the operation member 104 and perform photographing, the interlocking switch 192 provided in parallel with the charging switch 65 is turned on when the visual field switching plate 24 is operated. In other words, since the main capacitor 66 is charged, when the C size or P size print is designated at the time of photographing the first photographing frame, the dot mark designating each print is not exposed.

In the second embodiment, an LED is used as a light source for exposing a dot mark on a photographic film. However, for example, a part of the light of a strobe discharge tube may be guided. The photo film may be guided to the vicinity of the photographic film by an optical member or the like, and the strobe light may be used to expose a dot mark on the photographic film.

In each of the above embodiments, a mark switching plate having an opening window is used, but a mark switching plate without an opening window may be used. In addition, although rectangular dots are used as marks representing the print range, for example, circular dots may be used. Further, the correspondence between the number of dots and each print range is C size for two dots, panorama for one dot, and H size for no dots, but is not limited to these. . In addition, the print range is set to three types, that is, C size, panorama size, and H size, but is not limited thereto.

[0083]

As described above, according to the present invention, an unexposed photographic film is stored in advance, a strobe unit including a power supply, a main condenser, a strobe discharge tube, etc., and a field of view corresponding to a standard exposure size. A finder, field-of-view restricting means operable to switch to a position for restricting the field-of-view range of the viewfinder, and a dot mark for designating a print range on the photo film corresponding to the operation position of the field-of-view restricting means. In the film unit with a lens, the electricity charged in the main capacitor is used as a power source for the light source for dot mark exposure, and when the visual field restricting means is operated in a direction for restricting the visual field range of the finder, An interlock switch that starts charging the main capacitor is provided. Also be moved field regulating means in less operation, it is possible to provide a film unit capable of exposing the dot mark designating the print size.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view schematically showing a data exposure unit in a film unit with a lens according to the present invention.

FIG. 2 is a perspective view showing the appearance of a film unit with a lens according to the present invention.

FIG. 3 is an exploded perspective view illustrating a configuration of a film unit with a lens according to the present invention.

FIG. 4 is an exploded perspective view showing a configuration of a front cover of the film unit with a lens according to the present invention.

FIG. 5 is a circuit diagram showing an electric circuit of the lens-fitted film unit of the present invention.

FIG. 6 is an explanatory diagram showing a state of a field switching plate and a data exposure unit when a finder field of a film unit with a lens is H size.

FIG. 7 is an explanatory diagram showing a state of a field switching plate and a data exposure unit when a finder field of a film unit with a lens is C size.

FIG. 8 is an explanatory diagram showing a state of a field switching plate and a data exposure unit when a finder field of a film unit with a lens is P size.

FIG. 9 is an explanatory diagram showing a state of a field switching plate and a data exposure unit when a finder field of a film unit with a lens is switched from H size to C size.

FIG. 10 is an explanatory diagram showing a state of a field switching plate and a data exposure unit when a finder field of a film unit with a lens is switched from H size to P size.

FIG. 11 is an explanatory diagram showing a recording state when a print of each size is designated for a photo film.

FIG. 12 is a perspective view illustrating an appearance of a film unit with a lens according to a second embodiment of the present invention.

FIG. 13 is an exploded perspective view showing the configuration of the film unit with a lens shown in FIG. 12;

FIG. 14 is an exploded perspective view showing a configuration of a front cover of the film unit with a lens shown in FIG. 12;

FIG. 15 is a circuit diagram showing an electric circuit of a film unit with a lens according to a second embodiment of the present invention.

FIG. 16 is an explanatory diagram showing a state of a field switching plate and a data exposure unit when a finder field of a film unit with a lens in the second embodiment is H size.

FIG. 17 is an explanatory diagram showing a state of a field switching plate and a data exposure unit when a finder field of a film unit with a lens according to a second embodiment is C size.

FIG. 18 is an explanatory diagram showing a state of a field switching plate and a data exposure unit when a finder field of a film unit with a lens according to a second embodiment is a P size.

FIG. 19 is an exploded perspective view schematically showing a data exposure unit in the film unit with a lens according to the second embodiment.

FIG. 20 is an explanatory diagram showing a state of a field switching plate and a data exposure unit when a finder field of a film unit with a lens is switched from H size to C size.

FIG. 21 is an explanatory diagram showing states of a field switching plate and a data exposure unit when a finder field of a film unit with a lens is switched from H size to P size.

[Explanation of symbols]

 Reference Signs List 13 Body base 18 Photo film cartridge 24 Field switching plate 30 Film unit with lens 73 Interlock switch 76, 77 LED 78, 79 Mark exposure light source switch 82a, 82b Operation projection 87a, 87b Cam unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI G03B 15/05 G03B 15/05 17/24 17/24

Claims (4)

[Claims] An unexposed photographic film is stored in advance, a strobe unit including a power supply, a main condenser, a strobe discharge tube, and the like, a finder having a field of view corresponding to a standard exposure size, and a field of view of the finder are regulated. Wherein the main condenser is charged by a field-of-view restricting means operable to be switched to a position, and a lens-fitted film unit for exposing a dot mark for designating a print range on the photographic film in accordance with the operation position of the field-of-view restricting means. A power switch is provided for the power supply of the light source for the dot mark exposure, and an interlock switch is provided to start charging the main capacitor of the strobe unit when the visual field restricting means is operated in a direction for restricting the visual field range of the viewfinder. A film unit with a lens. 2. The system according to claim 1, wherein the interlocking switch is turned on and off by an operation projection provided on a view restriction plate having an opening which is inserted into and removed from the front of the viewfinder and limits a view range of the viewfinder. The film unit with a lens according to claim 1. 3. A light source for dot mark exposure is provided at least two or more, and an operation cam for operating a mark exposure light source switch for turning on and off each of the light sources for dot mark exposure is provided on the view restriction plate. The film unit with a lens according to claim 2, wherein the film unit is provided. 4. The light source for dot mark exposure is an LED.
The lens-fitted film unit according to any one of claims 1 to 3, wherein: