JPH09230437A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the increase of the size even if masks for changing a finder format are provided in a finder by housing two insertible and removable masks in the finder and preventing the masks from being protruded into the optical path of the finder with a cam linked with a teeth lacked gear and projections formed on the masks, when masks do not receive force from the teeth lacked gear. SOLUTION: Two masks 12 and 13 are housed in a state where they are shifted a little in an optical axial direction, between the finder 2 and a main body 5. Then, the mask on which the force is exerted from the tooth lacked gear 11a is inserted into the optical path of the finder 2, at the same time of the insertion of the mask into the optical path of the finder 2, the mask on which the force is not exerted is prevented from entering the optical path,by a gear part 11c linked with the tooth lacked gear 11a and pins formed on the masks 12 and 13 abutted on the gear part 11c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera capable of inserting and removing a mask in a finder and displaying a plurality of formats in the finder.

[0002]

2. Description of the Related Art In recent years, a film image has been developed in which a film reader is not exposed from a cartridge. Also,
Or a system that can change the shooting format (screen size, shape), record the information magnetically or optically (such as imprinting dots) on film, and print in that format when printing Is proposed.

For example, in Japanese Patent Laid-Open No. 7-84309, the print format is switched and the information is printed on a film by the point of light. For that purpose, the light from the light source is switched by a mask interlocked with a knob. Cameras are disclosed.

[0004]

However, in the above-mentioned conventional technique, since the mask for changing the finder format is arranged on the side surface of the finder, there is a problem that the size of the side surface of the camera becomes large.

Further, although the mask is inserted into and removed from the finder by selectively transmitting the force with the toothless gear, when the mask is not receiving the force from the toothless gear, the mask urges the mask to the outside. . Therefore, by providing a spring,
There is a problem that the camera becomes large.

The present invention has been made in view of the above problems, and an object thereof is to provide a camera that does not increase in size even if a mask for changing the finder format is provided in the finder.

[0007]

That is, the present invention is directed to a plurality of mask means which are arranged along the optical axis and overlap each other, and which can be inserted into and removed from the optical path from a direction substantially perpendicular to the optical axis. And moving means for selectively moving the plurality of mask means into the optical path.

According to the present invention, the finder optical system is arranged outside the optical path so as to overlap each other along the optical axis direction.
A plurality of mask means for changing the finder field by being inserted into the optical path from a direction substantially perpendicular to the finder optical axis, and a moving means for selectively moving the plurality of mask means into the finder optical system. And is provided.

In the camera of the present invention, the mask is housed between the finder and the taking lens, and the two masks are housed with a slight shift in the optical axis direction. And
The cam that interlocks with the tooth-missing gear and the protrusion formed on the mask that contacts the gear prevent the mask from protruding into the finder optical path when the mask is not receiving a force from the tooth-missing gear.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a structure of a camera according to an embodiment of the present invention, and is a central sectional view parallel to an optical axis of the camera.

In FIG. 1, a finder 2 composed of a plurality of lenses 2a, 2b, 2c and the like is attached to the upper part of the exterior 1 of the camera. Then, a light ray 3 in a normal visual field passes through the finder 2.

The front side of the camera of the main body 5 in the exterior 1 (see FIG. 1).
On the left side), the taking lens 6 and the sector 7 of the shutter are provided. The light passing through the taking lens 6 forms an image on a film (not shown) in the film rail 5a portion formed on the main body 5. The film is urged by the pressure plate 9 from the rear (right side in the figure). The pressure plate 9 is attached to the main body 5 at a position separated from the exterior 1.
It has openings 9a and 9b. Further, the pressure plate 9 is formed with a projection 9c and a shaft 9d (see FIGS. 6 to 8) for engaging with an interlocking gear 18 and a thin plate 19 described later.

A finder mask, which is positioned on the main body 5 in front of and behind the axis 11 and the optical path, the details of which will be described later, and which is inserted into and removed from the optical path of the finder 2 to provide a finder field of view of a selected format. 12 and 13 are provided. The shaft 11 corresponds to the masks 12, 13
It has a partly tooth-missing gear 11a for moving the vertical direction.

Further, above the shaft 11, there are provided click pieces 14 and switch pieces 15 and 16 which engage with the click ridges 11e and 11f and will be described in detail later. An interlocking gear portion 11g is formed on the pressure plate side of the shaft 11, and is configured to mesh with a gear portion 18a of the interlocking gear 18. The interlocking gear 18 is also engaged with the thin plate 19 and the dial 20.

The dial 20 is provided with an operation protrusion 20a for operating with a finger for changing the format, and is configured to be rotatable around a shaft portion 20b. The movement of the dial 20 causes the protrusion 20c formed on the dial 20 and the protrusion 1 formed on the interlocking gear 18 to move.
When 8b is engaged, it is transmitted to the shaft 11 via the interlocking gear 18.

Further, the movement of the interlocking gear 18 causes the thin plate 19 to move as described later. As a result, the light of the LED 21 arranged in the lower portion of the outer package 1 is allowed to be applied to the film through the openings 9a and 9b of the pressure plate 9.

Next, the movement of each part when the dial 20 is operated will be described with reference to FIGS. The dial 20 is exposed to the outside of the exterior 1 of the camera, and the operating protrusion 20a is operated by the operator's finger to rotate in a predetermined direction around the shaft portion 20b. By the convex portion 20c provided on the dial 20, the interlocking gear 18 rotates around the convex portion 9c of the pressure plate 9 via the convex portion 18b of the interlocking gear 18.

When the interlocking gear 18 rotates in a predetermined direction, the shaft 11 is rotated from the gear portion 18a formed on the interlocking gear 18 through the interlocking gear portion 11g of the shaft 11 having the toothless gear 11a. . With the rotation of the shaft 11, the partly tooth-missing gear 11a rotates in the direction of arrow A or B in the figure. still,
A gear portion 11c and a toothless portion 11d are formed on the mask side of the outer circumference 11b of the toothless gear 11a.

On the other hand, the masks 12 and 13 are formed with openings 12a and 13a having different shapes in order to limit the field of view in the substantially central portion thereof. A gear portion 12b and a pin 12c are provided below one side of the mask 12. Similarly, the gear portion 13 is provided below the mask 13.
b and pin 13c are provided. However, the gear portion 13b and the pin 13c are provided on the opposite side of the gear portion 12b and the pin 12c with the opening in between.

The gear portion 12b of the masks 12 and 13
And 13b, the pins 12c and 13c, and the toothless gear 11a.
By meshing with the gear portion 11c and the toothless portion 11d, the masks 12 and 13 move in the vertical direction of the camera,
It is inserted into and removed from the optical path of the finder 2.

That is, when the gear portion 12b of the mask 12 meshes with the gear portion 11c of the shaft 11 and the shaft 11 is rotated in the direction of arrow A in the drawing, the gear portion 12b of the mask 12 meshed with the gear portion 11c causes The mask 12 is moved up into the optical path of the finder 2 along the rail portion which is not covered. Similarly, when the shaft 11 is rotated in the direction of arrow B in the drawing, the gear portion 1
1c and the gear portion 13b mesh with each other, and the mask 13 is raised.

Here, when one mask is moved in the vertical direction, the gear portion of the other mask faces the tooth-missing portion 11d of the tooth-missing gear 11a of the shaft 11, so that the shaft 1
I do not receive the power from 1. Further, when the mask is below the optical path of the finder 2, the pins 12c and 13c provided on the mask are at positions facing the outer circumference 11b of the shaft 11. For example, when holding the camera upside down,
When the masks 12 and 13 are raised and are about to be inserted into the optical path of the finder 2, the pins 12c and 13c come into contact with the outer circumference 11b of the shaft 11 to prevent the masks 12 and 13 from being raised. As a result, it is possible to move the other mask up and down with one mask lowered, or to bring both masks down.

The operation of the shaft 11 and the masks 12 and 13 described above will be described in detail with reference to FIG. FIG.
In (a), 22 represents a normal visual field screen composed of the light rays 3 in FIG.

As described above, the opening 1 is formed in the mask 12.
2a, a gear portion 12b and a pin 12c are provided.
Similarly, in the mask 13, the opening 13a, the gear portion 13b,
A pin 13c is provided. Further, as described above, the shaft 11 also includes the tooth-missing gear 11a, the outer periphery 11b, and the tooth-missing portion 11
d is provided.

FIG. 3A shows a state in which a normal field-of-view screen (normal field of view) 22 in which both the masks 12 and 13 are lowered is visible in the viewfinder. At this time, even if the masks 12 and 13 are turned upside down in this state, the pins 12c and 13c come into contact with the outer circumference 11b of the shaft 11 to prevent them from entering the finder optical path.

Here, when the shaft 11 is rotated clockwise, the gear portion 11c of the shaft 11 is replaced with the gear portion 12b of the mask 12.
By pushing, the mask 12 is pushed upward, that is, in the finder optical path. At this time, since the pin 12c faces the gear portion 11c of the shaft 11, the pin 12c is not blocked by the outer circumference 11b from being inserted into the finder optical path. FIG. 3 (b)
Indicates the state in which the mask 12 is thus inserted in the finder optical path.

The mask 12 is placed in the normal field of view 22 of the finder.
Is inserted, the vertical direction of the normal visual field 22 is restricted by the opening 12a of the mask 12, so that a horizontally long visual field can be seen from the viewfinder as shown in the drawing.

At this time, the gear portion 1 of the other mask 13
3b faces the toothless portion 11d of the shaft 11,
Does not receive power from. Further, the pin 13c is the outer circumference 1 of the shaft 11.
1b, the mask 13 is not inserted into the optical path of the finder even when the camera is turned upside down.

Next, when the shaft 11 is rotated counterclockwise, the state shown in FIG. 3 (c) is obtained. That is, the gear portion 11c pushes the gear portion 13b of the mask 13 and the mask 13 is pushed up into the finder optical path. At this time, the pin 13c faces the gear portion 11c. Normal field of view 22
Since the mask 13 is inserted therein, the opening 13a restricts the lateral direction of the normal visual field 22 so that a vertically long visual field can be seen from the viewfinder as shown in the drawing.

At this time, the gear portion 1 of the other mask 12
2b faces the toothless portion 11d and receives no force from the shaft 11. Further, the pin 12c faces the outer circumference 11b, so that the mask 12 is not inserted into the optical path of the finder even when the vertical direction of the camera is reversed.

Next, with reference to FIGS. 4 and 5 (a) to 5 (c), the operation of the switch for indicating the click of the rotation of the shaft 11 and which of the masks 12 and 13 is raised will be described. The shaft 11 is formed with click ridges 11e and 11f for clicking which are activated when rotated, and convex portions 11 and 11i for moving the switch pieces 15 and 16 to turn the switches on and off. The click piece 14 has one end (not shown) fixed, and the other end whose movement is restricted upward.

Here, in order to change the field of view of the finder, for example, the axis 11 is moved in the direction of arrow C (see FIG. 5A).
When is rotated, the click crest 11e of the shaft 11 tries to push up the click piece 14. However, since both ends of the click piece 14 are restricted in movement as described above, the click piece 14 is distorted and a click force is applied to the shaft 11.

When the shaft 11 is rotated in the direction of arrow D in FIG. 5A, the click piece 14 is rotated in the opposite direction to the direction in which the shaft 11 is rotated in the direction of arrow C described above. Occurs between and the click crest 11f of the shaft 11.

Therefore, when the shaft 11 is rotated, the click 3 shown in FIGS. 5 (a), 5 (b) and 5 (c) is performed.
You will be able to click-stop in one position. Also,
As shown in FIGS. 4 and 5 (a), the switch pieces 15 and 16 come into contact with or separate from the click piece 14 so that which format is currently visible to the CPU (not shown) in the finder. The switch for indicating is configured.

In FIG. 5A, the switch pieces 15 and 16 are shown.
Touches the click piece 14. The finder in this state represents the normal field of view (see FIG. 3A) 22.

When the shaft 11 is rotated in the direction of arrow C in FIG. 5 (a) and the mask 12 is inserted into the finder optical path as shown in FIG. 3 (b), it is shown in FIG. 5 (b). Like That is, the switch piece 15 is pushed up by the convex portion 11h of the shaft 11 to separate the switch piece 15 from the click piece 14. As a result, a CPU (not shown)
It is transmitted that the mask 12 is inserted in the finder optical path.

On the other hand, if the shaft 11 is rotated in the direction of arrow D in FIG. 5 (a), the switch 13 is also switched with the mask 13 inserted in the finder optical path as shown in FIG. 3 (c). The piece 16 is separated from the click piece 14.

In this way, the CPU (not shown)
It is possible to inform which mask is currently inserted in the finder optical path. Here, turning on and off of the LED 21 by a CPU (not shown) is controlled as follows.

The switch pieces 15 and 16 are both click pieces 1.
The LED 21 does not light when it is in contact with 4. Also,
When either or both of the switch pieces 15 and 16 are separated from the click piece 14, the LED 21 lights up.

Next, with reference to FIGS. 6 to 8, the operation of optically recording in which format the image was taken will be described. In the above format, it is possible to know which format the image was taken by selectively imprinting two dots by the LED 21 at a predetermined position outside the screen of the film. The dots of the LED 21 are formed by the light of the LED 21 being reflected on the film through the openings 9a and 9b formed in the pressure plate 9. The thin plate 19
This thin plate 1 is provided between the pressure plate 9 and the LED 21.
The operation of 9 selects whether or not the light is transmitted through the film through the openings 9a and 9b when the LED 21 is turned on.

When the dial 20 is rotated in the direction of arrow A or B in the drawing, as described above, the interlocking gear 18 protrudes from the pressure plate 9 via the convex portion 18ba by the convex portion 20c formed on the dial 20. It rotates in a predetermined direction around 9c.

At this time, the fitting portion 18c, which is provided in the interlocking gear 18 and fits into the opening 19a, also rotates around the convex portion 9c. The opening 19a fitted to the fitting portion 18c causes the thin plate 19 to rotate about the shaft 9d of the pressure plate 9 in association with the rotation of the dial 20 in a predetermined direction.

Therefore, for example, in the state shown in FIG. 6, the thin plate 19 shields the opening 9a from light and exposes only the opening 9b. Therefore, if the LED is
When 21 is emitted, the light of the LED 21 is emitted only through the opening 9b, and only one dot is imaged on the film.

When the dial 20 is rotated in the direction of the arrow B in the drawing from the state shown in FIG. 6, the thin plate 19 rotates and the openings 9a and 9b of the pressure plate 9 are exposed, as shown in FIG. Then, the light from the LED 21 is emitted from the openings 9a and 9b.
And two dots are imprinted on the film.

When the dial 20 is rotated in the direction of arrow A from the state shown in FIG. 6, the thin plate 19 is rotated to expose the opening 9a and shield the opening 9b from light, as shown in FIG. To be done. Therefore, the light of the LED 21 is emitted only through the opening 9b, and only one dot on the opposite side of FIG. 6 is imaged on the film.

The LED 21, the thin plate 19, the interlocking gear 18
Is attached to the pressure plate 19, and the dial 20 is attached to the exterior 1. Therefore, as for the force from the outside, only the force in the rotational direction is applied to the interlocking gear 18, and the components inside the exterior 1 described above are not destroyed by the force from the outside.

In the above description, it was described how each part operates by rotating the dial 20 to rotate the shaft 11. Here, it will be described below what kind of state each part becomes by rotating the dial 20.

I) When the dial 20 is in the position (neutral position) shown in FIG. 6, a) Neither the mask 12 nor the mask 13 is inserted into the finder 2, and the normal state shown in FIG. The field of view screen 22, b) The switch pieces 15 and 16 are both in contact with the click piece 14 (FIG. 5 (a)), so the LED 21 does not light up. C) The thin plate 19 is at the position shown in FIG. The field of view is normally field 22 and no dots are imprinted on the film to optically record the format.

Ii) When the dial 20 is rotated in the direction of arrow A in FIG. 6 to the state shown in FIG. 8, a) The mask 12 is inserted into the finder 2 (see FIG. 3).
(B)), a horizontally long visual field is obtained.

B) The switch piece 15 is separated from the click piece 14 (FIG. 5 (b)), and the LED 21 is turned on. C) The thin plate 19 is in the position shown in FIG.
The position where the light of the LED 21 is radiated to the film through a, the viewfinder field becomes horizontal as shown in FIG. 3 (b), and only one dot for optically recording the format is projected on the film through the opening 9a. Be done.

Iii) When the dial 20 is rotated in the direction of arrow B in FIG. 6 to reach the state shown in FIG. 7, a) The mask 13 is inserted into the finder 2 (see FIG. 3).
(C)) The field of view of the short aspect ratio is obtained. B) The switch piece 16 is separated from the click piece 14 (FIG. 5 (c)) The LED 21 is turned on. C) The thin plate 19 is at the position shown in FIG. , Opening 9
The position where the light of the LED 21 is irradiated to the film through a and 9b becomes, and the viewfinder field has the short aspect ratio shown in FIG. 3C, and two dots for optically recording the format are imprinted on the film.

As shown in FIG. 9, the dial 20 described above is provided substantially below the finder located substantially in the center of the camera 24. The operation protrusion 25a of the dial 20 is formed in a normal position so as to face substantially downward. By providing the operation protrusion 25a at this position, the dial 20 can be easily operated by both hands holding the camera 24.

The operating projection 25a is not limited to the shape shown in FIG. For example, as shown in FIG. 10, an operation protrusion 26a may be formed on the lower portion of the dial 26 so as to project to the back surface of the camera 24.

Further, in the above-mentioned embodiment, the mask can be inserted into and removed from the optical path of the finder, but the mask may be inserted into and removed from the photographing lens side by reversing the gear.

According to the above embodiment of the present invention, the following constitution can be obtained. (1) The first field mask provided in the optical path of the finder optical system and the first field mask outside the optical path of the finder optical system are arranged to overlap each other along the optical axis direction, and with respect to the finder optical axis. A plurality of mask means for cooperating with the first field mask to grow a finder field different from that of the first field mask by being inserted into the optical path from a substantially vertical direction, and the plurality of mask means selectively. And a moving means for moving the lens into the finder optical system.

(2) The first mask provided in the optical path of the finder optical system and the first mask provided outside the optical path of the finder optical system are overlapped with each other along the optical axis direction,
The first mask cooperates with the first mask by being inserted into the optical path from a direction substantially perpendicular to the optical axis of the finder.
Second and third mask means for growing a viewfinder field different from that of the mask, a rotary knob for selecting the viewfinder field for growing, and the second or third mask means for interlocking with the rotary knob. And a moving means for moving the finder into the finder optical system.

(3) Each of the second and third mask means has a protrusion that is prevented from moving into the optical path when it is not inserted into the optical path, and the moving means is selected. And a blocking portion that blocks the movement of the protrusion when it is not inserted into the optical path. The camera according to (2).

[0058]

As described above, according to the present invention, it is possible to provide a camera that does not increase in size even if the finder has a mask for changing the finder format.

[Brief description of drawings]

FIG. 1 is a central sectional view parallel to an optical axis of a camera, showing a configuration of a camera according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating movements of a shaft 11 and masks 12 and 13 when a dial 20 of FIG. 1 is operated.

3A and 3B are diagrams for explaining the operation of an axis 11 and masks 12 and 13, where (a) shows a normal view screen state, (b) shows a horizontally long screen state, and (c) shows a vertically long screen state. It is the figure shown.

FIG. 4 is a diagram illustrating an operation of a switch indicating a relationship between a click of rotation of a shaft 11 and masks 12 and 13.

FIG. 5 is a view for explaining the operation of a switch showing the relationship between the click of rotation of the shaft 11 and the masks 12 and 13,
FIG. 7A is a diagram showing a normal view screen 22 state, FIG. 8B is a horizontally long screen state, and FIG. 8C is a vertically long screen state.

FIG. 6 is a diagram for explaining the operation of optically recording on the film which format was taken, in which the finder field of view is the normal field of view, and the film does not include the dots for optically recording the format. It is the figure which showed the state.

FIG. 7 is a diagram for explaining an operation of optically recording on the film which format was taken, in which the viewfinder field is horizontally long and two dots for optically recording the format are imprinted on the film. It is the figure which showed the state where it was enclosed.

FIG. 8 is a diagram for explaining the operation of optically recording on the film which format was taken, in which the viewfinder field is vertically long and only one dot for optically recording the format is imprinted on the film. It is the figure which showed the state where it was enclosed.

FIG. 9 is an external perspective view of a camera according to an embodiment of the present invention.

FIG. 10 shows another embodiment of the present invention and is a diagram showing the shapes of the dial and the operation protrusion.

[Explanation of symbols]

 1 exterior, 2 viewfinder, 3 light rays, 5 main body, 6 photographing lens, 9 pressure plate, 9a, 9b opening, 9c, 11h, 11i, 18b, 20c convex portion, 9d, 11 axis, 11a toothless gear, 11b outer circumference, 11c, 12b, 13b gear part, 11d toothless part, 11e, 11f click crest, 11g interlocking gear part, 12, 13 finder mask (mask), 12a, 13a, 19a opening, 12c, 13c pin, 14 click piece, 15 , 16 switch pieces, 18 interlocking gear, 18a gear part, 18c fitting part, 19 thin plate, 20 dial, 20a operation protrusion, 20b shaft part, 21 LED.

Claims (3)

[Claims] 1. A plurality of mask means, which are arranged so as to overlap each other along an optical axis direction and can be inserted into and removed from an optical path from a direction substantially perpendicular to the optical axis, and the plurality of mask means are selected. A camera for moving the optical path into the optical path. 2. The finder optical system is arranged outside the optical path of the finder optical system so as to be overlapped with each other along the optical axis direction, and is inserted into the optical path from a direction substantially perpendicular to the optical axis of the finder to change the finder visual field. A camera, comprising: a plurality of masking means for controlling and a moving means for selectively moving the plurality of masking means into the finder optical system. 3. The plurality of masking means comprises two masking means, each of the two masking means having a protrusion that is prevented from moving into the optical path when not inserted into the optical path. However, the moving means has a recess that allows the protrusion to move when selected and inserted into the optical path, and a blocking portion that blocks the movement of the protrusion when not inserted into the optical path. The camera according to claim 1 or 2, characterized in that: