JPH0618959A - Camera with soft focus filter - Google Patents

Abstract

PURPOSE:To reduce the size of a photographic lens and to eliminate scratching to a surface by providing a soft focus filter easily inserted/removed, in the optical path of the photographic lens. CONSTITUTION:A soft focus filter 6 and a transparent plate glass 7 are horizontally arranged, and further, fixed on a frame member 10, and a soft focus filter 13 similar to the soft focus filter 6 is fixed on the frame member 10, in height different from that of the filter 6, etc., (a position opposite to an eyepiece 11 and a lens 12). The filters 6 and 13, and the plate glass 7 can be integrally and horizontally moved with the frame member 10, and the filter 13 is inserted into a finder optical path at the same time when the filter 6 is inserted into a photographing optical path. On the other hand, when the plate glass 7 is inserted into the photographing optical path, instead of the filter 6, the filter 13 is removed from the finder optical path. Moreover, as the filters 6 and 13, ones obtained by forming ruggedness on the surface of a plane glass, are used.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an improvement of a camera provided with a range finder.

[0002]

2. Description of the Related Art Most cameras equipped with a range finder and having a built-in flash generally have a small built-in flash, close to a point light source, and a short distance between a lens and the flash. . For this reason, when a person at a relatively short distance is photographed, the image quality may be poor. That is, especially when an old woman or the like is photographed, makeup or wrinkles are noticeable.
Such a phenomenon occurs even when a person other than a person is photographed, for example, or when a camera without a built-in flash is used, but this tendency is particularly remarkable when a person is photographed by stroboscopic photography.

It is known to use a so-called soft focus filter for such a problem, but in the case of a camera equipped with a range finder, the effect of the filter is usually found in the viewfinder like a single-lens reflex camera. I can't confirm. Therefore, I had to actually take a picture to see if the wrinkles disappeared after applying the filter. Moreover, even if a filter is inserted in the finder optical system so that the filter effect can be confirmed with the finder, the camera of the camera equipped with the range finder generally has little knowledge of the photograph, and it is easy to use the soft focus filter well. That wasn't the case.

[0004]

SUMMARY OF THE INVENTION The present invention is to solve the above problems,
That is, the object is to provide a camera provided with a range finder that can obtain an appropriate soft focus filter effect. The present invention focuses on the fact that the above-mentioned drawbacks such as wrinkles stand out are problems peculiar to shooting at a relatively short distance, and the soft focus filter is applied only when shooting a close object to shoot a distant object. Sometimes the basic idea is to remove the filter.

[0005]

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

In FIG. 1, 1 is a film chamber, 2 is a cartridge chamber, 3 is a shutter base plate having an opening 3a, 4 is a shutter, and 5 is a photographing optical system. Behind the shutter base plate 3 (upper side in FIG. 1), a soft focus filter 6 and a transparent plate glass 7, either one of which is selectively opened 3a.
Are arranged so as to face each other. That is, as the principle is shown in FIG. 2, the soft focus filter 6 and the transparent plate glass 7 are arranged side by side in the lateral direction and then the frame member 1 is arranged.
It is fixed to 0, and a soft focus filter 13 similar to the filter 6 is fixed to the frame member 10 at a height different from that of the filter 6 and the like (a position facing the eyepiece lens 11 and the lens 12). The filters 6 and 13 and the plate glass 7 are movable in the lateral direction integrally with the frame member 10. When the filter 6 is inserted into the photographing optical path, the filter 13 is inserted into the finder optical path at the same time. When the plate glass 7 is inserted into the photographing optical path instead of, the filter 13 is deviated from the finder optical path. The plate glass 7 is provided to adjust the optical path length of the image pickup. As the filters 6 and 13, as is well known, a flat glass having irregularities formed by etching or the like is used. In particular, a soft focus filter for photographing a person may use a filter that partially diffuses only flesh-colored light.

In the present invention, as described above, the filter 6 is inserted in the photographing optical path for short-distance photographing, and the filter 6 is taken out for long-distance photographing (here, at the same time, the filter 13 is inserted in the finder optical path or from now on). A specific configuration therefor will be described below.

In FIG. 3, a soft focus filter 6 and a transparent plate glass 7 are juxtaposed on a frame member (guide plate) 10 which is movable in the left-right direction, and a spring 21 urges it to the right. The frame member 10 also includes a knob portion 10a and a cutout 10b that are operated by the photographer. A distance ring 22 is rotatably arranged in front of the filter 6 and the like, and is biased clockwise by a spring 23. The distance ring 22 rotates right as the distance increases, and a step cam 22a that engages with the output claw 24 of the autofocus device and a protrusion 22b that engages with a lever 26 described later.
Is equipped with.

A lever 26 arranged below the distance ring 22 is rotatable about a shaft 27 and is biased by a spring 28 in the right-handed direction. The lever 26 has a protrusion 26a at one end that contacts the ring protrusion 22b, and a bent portion 26b at the other end. Another lever (stopper) 3 is attached to the shaft 27.
One end of 1 is pivotally supported, and an engaging portion 3 formed at its free end
1a is adapted to engage with the notch 10b of the guide 10. The lever 31 is biased counterclockwise by a spring 32.

Next, the operation of this embodiment will be described. First, when the subject is at a short distance, the knob 10a is operated from the outside of the camera to resist the action of the spring 21 from the guide 1.
0 is moved to the left, and the soft focus filter 6 is inserted in the photographing optical path. The guide 10 is locked at this position by the engagement portion 31a of the stopper 31 that is turned counterclockwise by the action of the spring 32 falling into the notch 10b.

Focusing is then performed by the shutter release, and the distance ring 22 tries to rotate clockwise, but the output claw 24 of the autofocus device is close to the subject because of the closeness of the object, so it rotates so much. Without the output claw 24 being the lower step cam 22.
engage a. In such a range in which the rotation amount of the distance ring 22 is small, the lever protrusion 26a is located in the ring protrusion 22b.
Since the lever 26 is in the left-handed state, the stopper 31 is not turned to the right, and the movement of the guide 10 is stopped. Since soft focus shooting is performed in this state, wrinkles will not be noticeable even if a person nearby is photographed.

In the present embodiment, when the soft focus filter 6 is inserted in the photographing optical path, the soft focus filter 1 is also placed in the finder system 14 at the same time.
3 is inserted so that the photographer can observe the filter effect through the viewfinder. In other words, it is possible to take a picture similar to that seen in the viewfinder.

On the other hand, when the distance to the subject is long, the output claw 24 is relatively far from the ring 22 even if the knob portion 10a is operated to insert the soft focus filter 6 into the photographing optical path. The distance ring 22 is rotated by a large angle to the right due to the action of the spring 23 until the high part of the contact ring contacts the output claw 24. As a result, the contact between the ring protrusion 22b and the lever protrusion 26a is released, and the lever 26 rotates right by the action of the spring 28, and the bent portion 26b causes the stopper 31 to rotate right against the action of the spring 32. To be done. As a result, the guide 10 is unlocked by the stopper 31 and moves to the right by the action of the spring 21, so that the plate glass 7 is inserted into the photographing optical system 5 instead of the filter 6. Although the filter 6 is not inserted during long-distance shooting, wrinkles are not noticeable in this case, so that a good photograph can be obtained without inserting the filter 6.

By operating the knob 10a according to the photographer's preference, the filter 6 can be inserted into the photographing optical path at any time.

Next, a second embodiment of the present invention will be described with reference to FIG. 4, in which a soft focus filter 6 is automatically inserted in the photographing optical path when short-distance photographing is performed using a strobe. This is an example of such a configuration.

In FIG. 4, the slide plate 10 has a long hole 10c.
Can be moved in the lateral direction (left and right direction in FIG. 4) by being guided by the pin 41, and is urged to the right by the spring 21. The soft focus filter 6 and the transparent glass plate 7 are juxtaposed on the extension 10d of the slide plate 10.
The structure of the distance ring 22 arranged in front of the filter 6 is the same as that of the above-mentioned embodiment, and therefore its explanation is omitted.

Below the distance ring 22, there is provided a key removing lever 42 having a bent portion 42b. The lever 42 has an elongated hole 42a and is arranged so as to be vertically movable by being guided by a pin 43. Is biased upward by. A lever 46 is rotatably arranged below the shaft 47, and is biased by a spring 48 in the clockwise direction. The lever 46 has a protrusion 46a and a bent portion 46b formed at its end. On the side of the lever 46, another lever 52 that is rotatable around a shaft 51 is arranged.
It is urged in the counterclockwise direction by 3. The lever 52 is
The bent portion 46b is provided with one end portion 52a capable of contacting the bent portion 46b, and the counterclockwise rotation thereof is restricted by the stopper 56.

On the side of the lever 52, a slide plate 61 equipped with a strobe 60 is arranged so as to be vertically movable by being guided by a pin 62 through a long hole 61a, and is urged upward by a spring 63. The slide plate 61 includes a protrusion 61b that can contact the other end 52b of the lever 52. In the figure, reference numeral 65 denotes a hoisting interlocking member, which moves to the left during hoisting and contacts the protrusion 10e of the slide plate 10.

The operation of this embodiment will be described below.
When the subject is at a short distance and flash photography is performed, the strobe 60 is raised by the action of the spring 63. When the lever 65 is wound up and the lever 65 is moved to the left to charge the spring 21 and then the shutter is released, the distance ring 22 rotates right as an exposure preparation operation, and the lower portion of the step cam 22a engages with the output pawl 24. The right rotation of the ring 22 stops. At this time, the key removing lever 42 is in the lowered position by contacting the ring projection 22b, and the lever 46 is in the right-handed state, and the slide plate 10 is locked. Therefore, the soft focus filter 6 faces the photographing optical system 5, and the flash 6
Soft focus shooting is performed by utilizing the light emission of 0.
In addition, when the strobe 60, that is, the slide plate 61 is raised, the protrusion 61b of the strobe 60 is moved to the leftmost lever 5
Since it is separated from the second end 52b and the lever 46 is not rotated, the slide plate 10 is not slid.

Next, the photographing when the subject is at a long distance will be described. Since the strobe 60 is not used at this time, the slide plate 61 is lowered. Then, the protrusion 61b engages with the end portion 52b of the strobe interlocking lever 52 to rotate the lever 52 clockwise, and the other end portion 52a of the lever 52 is rotated.
Engages with the bent portion 46 b of the lever 46,
To rotate counterclockwise, the protrusion 46a is disengaged from the notch 10f, and the locking of the slide plate 10 is released. As a result, the slide plate 10 moves to the right by the action of the spring 21, and the plate glass 7
Will be inserted into the optical path.

The above description is merely one embodiment of the present invention, and the present invention should not be construed as being limited thereto. For example, it is not essential that the camera has a built-in strobe (the embodiment shown in FIG. 3 is an embodiment according to this mode), and it is not essential that the camera be a so-called autofocus system.
The distance ring is generally used as a means for detecting the distance of the shooting distance, but the present invention is not limited to this, and the location of the filter 6 is not easily scratched if it is located behind the shutter and the shutter section is not provided. Has an advantage that dust such as film dust is unlikely to enter, but is not limited to this.

As described above, according to the present invention,
Soft focus shooting with a camera equipped with a range finder, which was considered difficult in the past, is extremely easy even for beginners to take, and it is effective in producing beautiful pictures even when shooting elderly women and flowers. It

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing the principle of the present invention by extracting only the peripheral portion of the filter in the above embodiment.

FIG. 3 is a front view showing a specific example for moving a filter.

FIG. 4 is a front view showing another embodiment.

[Explanation of symbols]

 5 Photographing optical system 6 Soft focus filter 10 Slide plate 22 Distance ring 26, 31 Lever

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[Procedure amendment]

[Submission date] March 3, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Title: Camera with soft focus filter

[Claims]

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an improvement of a camera provided with a soft focus filter .

[0002]

2. Description of the Related Art Soft focus filters are
If you use a bo to shoot an elderly woman, make up
Shooting lens to prevent floating and wrinkles
Is inserted in the optical path of. Conventionally,
The soft focus filter is a lens with a built-in shooting lens.
At the tip (front end) of the lens barrel, that is, in front of the shooting lens, screw
It was common to install by. But with this
The soft focus filter covers the entire surface of the shooting lens.
Required to be large enough to increase its size.
It Also, the soft focus filter is on the outer surface of the camera,
Especially because it is attached to the tip of the lens barrel,
If an object touches the soft focus filter
The focus filter contacts the surrounding parts and scratches the surface.
There was a drawback that it was easy to stick.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art, that is, it can be easily inserted into and removed from the optical path of photographing,
A soft cloth that is small in size and has a scratch-resistant surface
Aiming to provide a camera with a focus filter
It was made as. To achieve the above objectives
In the present invention, this lens is placed in the optical path of the taking lens.
Light intensity control that can adjust the amount of light guided from the camera to the film surface
Alignment means is provided, and can be inserted and removed in the optical path of the shooting lens behind it.
It has a soft focus filter.

[0004]

Embodiments of the present invention will be described in detail below with reference to the drawings. In this embodiment, the soft focus filter
Insertion / removal is associated with shooting distance and strobe use
La camera in which the present invention is applied.

In FIG. 1, 1 is a film chamber, 2 is a cartridge chamber, 3 is a shutter base plate having an opening 3a, 4 is a shutter, and 5 is a photographing optical system. Behind the shutter base plate 3 (upper side in FIG. 1), a soft focus filter 6 and a transparent plate glass 7, either one of which is selectively opened 3a.
Are arranged so as to face each other. Shutter 4
Light guided from the shadow optical system 5 to the film surface of the film chamber 1.
The space behind it constitutes the light quantity adjusting means for adjusting the quantity of
The soft focus filter 6 is arranged in the.

As shown in FIG . 2, the soft focus filter 6 and the transparent plate glass 7 are laterally juxtaposed and fixed to the frame member 10. The frame member 10 has a height different from that of the filter 6 and the like. (Eyepiece 11 and lens 1
A soft focus filter 13 similar to the filter 6 is fixed at a position (facing 2). Filter 6, 13
The plate glass 7 is movable laterally integrally with the frame member 10. When the filter 6 is inserted in the photographing optical path, the filter 13 is inserted in the finder optical path at the same time, and the plate glass is used instead of the filter 6. When 7 is inserted in the photographing optical path, the filter 13 is out of the finder optical path. The plate glass 7 is provided to adjust the optical path length of the image pickup. As the filters 6 and 13, as is well known, a flat glass having irregularities formed by etching or the like is used. In particular, a soft focus filter for photographing a person may use a filter that partially diffuses only flesh-colored light.

In this embodiment , the filter 6 is inserted in the photographing optical path for short-distance photographing and the filter 6 is taken out for long-distance photographing (here, the filter 13 is simultaneously inserted in or taken out from the finder optical path). The specific configuration for that purpose will be described below.

In FIG. 3, a soft focus filter 6 and a transparent plate glass 7 are juxtaposed on a frame member (guide plate) 10 which is movable in the left-right direction, and a spring 21 urges it to the right. The frame member 10 also includes a knob portion 10a and a cutout 10b that are operated by the photographer. A distance ring 22 is rotatably arranged in front of the filter 6 and the like, and is biased clockwise by a spring 23. The distance ring 22 rotates right as the distance increases, and a step cam 22a that engages with the output claw 24 of the autofocus device and a protrusion 22b that engages with a lever 26 described later.
Is equipped with.

A lever 26 arranged below the distance ring 22 is rotatable about a shaft 27 and is biased by a spring 28 in the right-handed direction. The lever 26 has a protrusion 26a at one end that contacts the ring protrusion 22b, and a bent portion 26b at the other end. Another lever (stopper) 3 is attached to the shaft 27.
One end of 1 is pivotally supported, and an engaging portion 3 formed at its free end
1a is adapted to engage with the notch 10b of the guide 10. The lever 31 is biased counterclockwise by a spring 32.

Next, the operation of this embodiment will be described. First, when the subject is at a short distance, the knob 10a is operated from the outside of the camera to resist the action of the spring 21 from the guide 1.
0 is moved to the left, and the soft focus filter 6 is inserted in the photographing optical path. The guide 10 is locked at this position by the engagement portion 31a of the stopper 31 that is turned counterclockwise by the action of the spring 32 falling into the notch 10b.

Focusing is then performed by the shutter release, and the distance ring 22 tries to rotate clockwise, but the output claw 24 of the autofocus device is close to the subject because of the closeness of the object, so it rotates so much. Without the output claw 24 being the lower step cam 22.
engage a. In such a range in which the rotation amount of the distance ring 22 is small, the lever protrusion 26a is located in the ring protrusion 22b.
Since the lever 26 is in the left-handed state, the stopper 31 is not turned to the right, and the movement of the guide 10 remains stopped. Since soft focus shooting is performed in this state, wrinkles will not be noticeable even if a person nearby is photographed.

In the present embodiment, when the soft focus filter 6 is inserted in the photographing optical path, the soft focus filter 1 is also placed in the finder system 14 at the same time.
3 is inserted so that the photographer can observe the filter effect through the viewfinder. In other words, you can take a picture similar to what you see in the viewfinder.

On the other hand, when the distance to the subject is long, the output claw 24 is relatively far from the ring 22 even if the knob portion 10a is operated to insert the soft focus filter 6 into the photographing optical path. The distance ring 22 is rotated by a large angle to the right due to the action of the spring 23 until the high part of the contact ring contacts the output claw 24. As a result, the contact between the ring protrusion 22b and the lever protrusion 26a is released, and the lever 26 rotates right by the action of the spring 28, and the bent portion 26b causes the stopper 31 to rotate right against the action of the spring 32. To be done. As a result, the guide 10 is unlocked by the stopper 31 and moves to the right by the action of the spring 21, so that the plate glass 7 is inserted into the photographing optical system 5 instead of the filter 6. Although the filter 6 is not inserted during long-distance photography, in this case, wrinkles are not noticeable, so that a good photograph can be obtained without inserting the filter 6.

By operating the knob 10a according to the photographer's preference, the filter 6 can be inserted into the photographing optical path at any time.

Next, a second embodiment of the present invention will be described with reference to FIG. This is an embodiment in which the soft focus filter 6 is automatically inserted into the photographing optical path when performing short-distance photographing using a strobe.

In FIG. 4, the slide plate 10 has an elongated hole 10.
The c is guided by the pin 41 and can move in the lateral direction (left and right direction in FIG. 4), and is biased to the right by the spring 21. The soft focus filter 6 and the transparent glass plate 7 are juxtaposed on the extension 10d of the slide plate 10. The structure of the distance ring 22 arranged in front of the filter 6 is the same as that of the above-mentioned embodiment, and therefore its explanation is omitted.

Below the distance ring 22, there is provided a key removing lever 42 having a bent portion 42b. The lever 42 has an elongated hole 42a and is arranged so as to be vertically movable by being guided by a pin 43. Is biased upward by. A lever 46 is rotatably arranged below the shaft 47, and is biased by a spring 48 in the clockwise direction. The lever 46 has a protrusion 46a and a bent portion 46b formed at its end. On the side of the lever 46, another lever 52 that is rotatable around a shaft 51 is arranged.
It is urged in the counterclockwise direction by 3. The lever 52 is
The bent portion 46b is provided with one end portion 52a capable of contacting the bent portion 46b, and the counterclockwise rotation thereof is restricted by the stopper 56.

On the side of the lever 52, a slide plate 61 equipped with a strobe 60 is arranged so as to be vertically movable by being guided by a pin 62 through a long hole 61a, and is urged upward by a spring 63. The slide plate 61 includes a protrusion 61b that can contact the other end 52b of the lever 52. In the figure, reference numeral 65 denotes a hoisting interlocking member, which moves to the left during hoisting and contacts the protrusion 10e of the slide plate 10.

Next, the operation of this embodiment will be described. When shooting a flash with the subject at a short distance, the spring 6
The action of 3 raises the strobe 60. When the lever 65 is wound up and the lever 65 is moved to the left to charge the spring 21 and then the shutter is released, the distance ring 22 rotates right as an exposure preparation operation, and the lower portion of the step cam 22a engages with the output pawl 24. The right rotation of the ring 22 stops. At this time, the key removing lever 42 is in the lowered position by contacting the ring protrusion 22b, and the lever 46 is in the right-handed state and keeps the slide plate 10 locked. Therefore, the soft focus filter 6 faces the photographing optical system 5, and the flash 60
Soft-focus shooting is performed using the light emission of. When the strobe 60, that is, the slide plate 61 is raised, the protrusion 61b of the strobe 60 is moved to the leftmost lever 52.
Since it is separated from the end portion 52b of the slide plate and the lever 46 is not rotated, the slide plate 10 is not slid.

Next, the photographing when the subject is at a long distance will be described. Since the strobe 60 is not used at this time, the slide plate 61 is lowered. Then, the protrusion 61b engages with the end portion 52b of the strobe interlocking lever 52 to rotate the lever 52 clockwise, and the other end portion 52a of the lever 52 is rotated.
Engages with the bent portion 46 b of the lever 46,
To rotate counterclockwise, the protrusion 46a is disengaged from the notch 10f, and the locking of the slide plate 10 is released. As a result, the slide plate 10 moves to the right by the action of the spring 21, and the plate glass 7
Will be inserted into the optical path.

The above description is merely one embodiment of the present invention, and the present invention should not be construed as being limited thereto. For example, it is not essential that the camera has a built-in strobe (the embodiment shown in FIG. 3 is an embodiment according to this mode), and it is not essential that the camera be a so-called autofocus system.
The distance ring is generally used as a means for detecting the distance of the shooting distance, but the means is not limited to this.

As described above, according to the present invention,
The soft focus filter is the optical path behind the light quantity adjusting means.
Since it will be inserted and removed inside, when attaching in front of the shooting lens
The size is much smaller than that. Also, the amount of light
Since the space behind the adjustment member is shielded from the outside world,
Placing a soft focus filter here will scratch the surface
The effect of being hard to get is obtained.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing only a peripheral portion of a soft focus filter in the above embodiment.

FIG. 3 is a front view showing a specific example for moving a soft focus filter.

FIG. 4 is a front view showing another embodiment.

[Explanation of reference numerals] 4 shutter (light amount adjusting means ) 5 photographing optical system (photographing lens) 6 soft focus filter 10 slide plate 22 distance ring 26, 31 lever

Claims (1)

[Claims] 1. A range finder, characterized in that a soft focus filter is inserted into a photographing optical path during short-distance photographing, and the soft focus filter is removed from the photographing optical path during long-distance photographing. camera.