JP2000235211A - Photographing attachment and camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photographing attachment which is provided with a filter and by which a user confirms a photographing effect by the filter through the finder of a camera and the camera by which the user confirms the photographing effect by the filter through the finder. SOLUTION: In this attachment 10, a filter supporting body 11 is provided with a sand spot filter 11d and a cross screen filter 11e arranged so as to be freely switched on the front surface of a photographing lens at a film with lens 1. Also, it is provided with a finder filter 11f corresponding to the sand spot filter 11d and the finder filter 11g corresponding to the cross screen filter 11e arranged on the front surface of a finder window so as to be freely switched.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a photographing attachment used for a camera and a camera having a photographing filter.

[0002]

2. Description of the Related Art Conventionally, a filter is mounted on the front surface of a photographic lens of a camera to enhance the effect of taking a picture taken by the camera. For example, the edge of the screen is blurred to sharpen only the center of the screen. A sand spot filter for photographing, a cross screen filter for giving a brilliant effect by emitting a radial beam of light to a high-brightness portion in a screen, and the like are generally commercially available.

[0003] These filters are known to be mounted on a filter mounting screw provided on a photographic lens of a camera, or mounted on a camera by a dedicated mounting band.

[0004]

Among the above filters, a filter of the type used by being attached to the lens of a single-lens reflex camera is used by attaching the filter to the lens, so that the user can reduce the photographing effect of the filter. It can be confirmed through the finder. However, in the case of a filter that is used by attaching it to a camera having a finder window separately from the taking lens, such as a compact camera or a film with a lens, the user cannot confirm the effect through the finder. The subject cannot be photographed while checking the effect.

In view of the above circumstances, the present invention provides a photographing attachment that includes a filter and allows a user to confirm the photographing effect of the filter through the viewfinder of the camera, and allows the user to confirm the photographing effect of the filter through the viewfinder. It is an object of the present invention to provide a camera capable of performing such operations.

[0006]

According to the present invention, there is provided a photographing attachment which is provided on a front surface of a camera having a finder window and a photographing lens on the front side thereof, and filters a photograph taken by the camera. (1) A mounting support attached to the front of the camera with both the front of the photographic lens and the front of the finder window open. (2) Photographed by being disposed on the front of the photographic lens. And a finder filter disposed in front of the finder window.The finder filter is rotatably supported by the mounting support and is rotated. Wherein the finder filter is provided with a filter support positioned in front of the finder window. To.

The camera according to the present invention includes a film with a lens in which a photographic film is built in from the beginning.

The filter support provided in the photographing attachment of the present invention holds a finder filter disposed in front of a finder window in addition to a photographing filter disposed in front of a photographing lens. When the filter is located in front of the photographic lens, the finder filter is located in front of the finder window. Therefore, by providing the viewfinder filter with a filter effect that allows the filter effect of the photographing filter to be visually recognized, the user can place a photographing filter in front of the photographing lens of the camera to obtain a photograph obtained by photographing. The image can be taken in advance through the viewfinder.

Here, the photographing attachment of the present invention is preferably detachably attached to the front of the camera.

When the photographing attachment is detachably attached to the front of the camera, the photographing attachment can be detached from the camera to perform ordinary photographing without imparting a filter effect to the photograph.

Further, in the photographing attachment according to the present invention, it is preferable that the filter support opens both the front surface of the photographing lens and the front surface of the finder window depending on a rotation position.

By opening both the front surface of the photographing lens and the front surface of the finder window by the rotation position of the filter support, the filter support can be simply rotated without removing the photographing attachment from the camera. It is possible to switch to normal photographing in which a filter effect is not applied to a photograph. In other words, it is possible to switch between a photographing mode in which a filter effect is applied to a photograph and a photographing mode in which a filter effect is not applied to a photograph while the photographing attachment is attached to the camera, and the photographing mode can be quickly switched. .

Further, in the photographing attachment of the present invention, the photographing filter and the finder filter are arranged such that the filter support is simultaneously disposed on the front surface of the photographing lens and the front surface of the finder window in accordance with the rotational position. It is preferable that a plurality of pairs are held.

By holding a plurality of pairs of the photographing filter and the viewfinder filter, it is possible to switch the filter function applied to the photograph without removing or replacing the photographing attachment.

Further, the photographing attachment of the present invention comprises:
It is preferable that the filter support is integrally formed with the photographing filter and the finder filter held by the filter support.

By integrally forming the filter support together with the photographing filter and the finder filter,
The manufacturing process of the filter support is simplified and the cost is reduced.

A camera according to the present invention, which achieves the above object, comprises: (1) a camera body provided with a finder window and a photographic lens on the front; and (2) a photographic camera arranged on the front of the photographic lens for photographing. A filter and a finder filter arranged in front of the finder window are held and rotatably supported by the camera body so that the finder filter is rotated and the photographic filter is positioned in front of the photographic lens. The filter is provided with a filter support positioned in front of the finder window.

By configuring a camera in which the filter support is rotatably supported by the camera body, the user can place a photographing filter in front of the photographing lens of the camera and photograph the photograph. Can be imaged in advance through a viewfinder.

The filter support in the camera of the present invention includes all the above-described various aspects of the filter support referred to in the photographing attachment of the present invention.

[0020]

Embodiments of the present invention will be described below.

FIG. 1 is a perspective view showing a film with a lens, and FIG. 2 is a perspective view showing a state where a photographing attachment according to a first embodiment of the present invention is mounted on the film with a lens.

As shown in FIG. 1, a lens barrel 2 supporting a photographing lens 2a and a finder window 3 are provided on the front surface of the film 1 with a lens. A strobe charge switch button 6 for causing the strobe light emitting unit 5 to emit light is provided. A shutter button 4 is provided on the upper surface of the film with lens 1.

As shown in FIG. 2, the photographing attachment 10 is attached to the center of the front surface of the film with lens 1. This photographing attachment 10
A mounting support 1 that is mounted with both the front surface of the taking lens 2a (see FIG. 1) and the front surface of the finder window 3 open.
2 (see FIG. 4 described later) and a filter support 11 rotatably supported by the mounting support 12.
The filter support 11 includes the sand spot filter 1.
1d and a cross-screen filter 11e. FIG. 2 shows a state in which the sand spot filter 11d is located in front of the photographing lens 2a (see FIG. 1).

FIG. 3 is a perspective view showing a state in which the cross screen filter is arranged on the front surface of the taking lens.

In FIG. 2, by rotating the filter support 11 clockwise, as shown in FIG. 3, a cross-screen filter 11e is disposed in front of the photographing lens 2a instead of the sand spot filter 11d.

FIG. 4 is an exploded perspective view of the photographing attachment shown in FIGS. 2 and 3 as viewed from the rear side.

A lens barrel fitting frame 12c into which the lens barrel 2 of the film with lens 1 (for example, see FIG. 1) is fitted is provided on the back surface of the mounting support 12 provided in the photographing attachment. Inside the lens barrel fitting frame 12c, a lens opening 12b for opening the front surface of the taking lens 2a (see FIG. 1) is formed. A finder opening 12d for opening the front of the finder window 3 (see FIG. 1) is formed in the upper part of the lens barrel fitting frame 12c. A through hole 12f is formed in the lower part of the periphery of the mounting support 12, and the rubber ring 13 passed through the through hole 12f is mounted on the mounting support 12 itself. Further, the rubber ring 1
A hook 12e for hooking the hook 3 is formed.
The filter support 1 is provided at the center of the mounting support 12.
1, a rotary shaft hole 12a into which a rotary shaft 11b to be described later is inserted.
Are formed, and the rotary shaft hole 12a and the finder opening 1 are formed.
Two arc-shaped slits 12g are formed between 2d and 2d. Also, the mounting support 1
A click stop receiver (not shown) is formed on a portion 12h of the front surface 2 between the two arc-shaped slits 12g to be engaged with small click stop projections 11h and 11i of the filter support 11 to be described later. Have been.

The filter support 11 provided in the photographing attachment has a rotating shaft integrally formed with a mounting shaft 11c which is inserted through a rotating shaft hole 12a of the mounting support 12 at the center of the back surface. 11b is provided. A photographic lens 2a (see FIG. 1) is provided around the rotation axis 11b.
Sand spot filter 11d, cross screen filter 11e, and finder window 3 arranged on the front side
(See FIG. 1) Two finder filters 11f and 11g are arranged on the front surface. Among the finder filters 11f and 11g, the finder filter 1
1f is provided with a pattern in which the filter action A imparted to the photograph by the sand spot filter 11d can be visually recognized, while the finder filter 11g has
A pattern is provided so that the filter action B applied to the photograph by the cross-screen filter 11e can be visually recognized. Here, the sand spot filter 11d, the cross-screen filter 11e, and the finder filters 11f and 11g are held on concentric circles around the rotation axis 11b.

A pair of operation knobs 1 for rotating the filter support 11 are provided on the outer peripheral portion of the filter support 11.
1a are provided at positions opposite to each other. Further, two small click-stop projections 11h and 11i are provided on a concentric circle centered on the rotation shaft 11b. The two click-stop small protrusions 11h and 11i are formed by the rotation of the filter support 11, and the click-stop receiver (see FIG. 2) formed on the portion 12h of the mounting support 12 sandwiched between the two arc-shaped slits 12g. (Not shown). The filter support 11
Is manufactured integrally with a sand spot filter 11d, a cross screen filter 11e, and finder filters 11f and 11g, which are held by a filter support 11, using a transparent resin. To manufacture the filter support 11 by integral molding, the filter support 11 may be manufactured from, for example, an acrylic resin or an optical polycarbonate resin. By integrally forming the filter support 11 in this way, the manufacturing process of the filter support 11 can be simplified and the cost can be reduced.

The photographing attachment has a snap ring 14.

The photographing attachment includes a rotary shaft 11b of the filter support 11 and a rotary shaft hole 12a of the mounting support 12.
And the snap ring 14 is fitted into the mounting shaft 11 c of the filter support 11. In the photographing attachment assembled in this manner, the filter support 11 is supported on the mounting support 12 so as to be rotatable about the rotation shaft 11b.

The assembled photographing attachment is
The lens barrel fitting frame 12c of the mounting support 12 is fitted to the lens barrel 2 (see FIG. 1) of the film with lens 1 and the rubber ring 13 attached to the mounting support 12 is attached to the film 1 with lens. Turn to the back and hook 12 of the mounting support 12
It is attached by hooking on e. Mounting support 12
As described above, since the lens opening 12b and the finder opening 12d are formed as described above, when the photographing attachment is mounted on the film with lens 1, the mounting support 12 is attached to the photographing lens 2a of the film with lens 1. It is mounted so that both the front and the front of the finder window 3 are open. In the present embodiment, a lens opening 12b and a finder opening 12d are formed in the mounting support 12 to open both the front surface of the photographing lens 2a and the front surface of the finder window 3. Instead to,
Forming a notch that cuts the peripheral edge of the mounting support 12,
Both the front surface of the taking lens 2a and the front surface of the finder window 3 may be opened. In the present embodiment, the mounting position of the photographing attachment to the film with lens 1 is as follows.
It is determined by fitting the lens barrel fitting frame 12c of the mounting support 12 to the lens barrel 2, but the mounting position of the photographing attachment may be determined by another known positioning means.

As described above, the filter support 11 includes a sand spot filter 11d, a cross-screen filter 11e, and finder filters 11f and 11g.
As shown in FIG. 2, when the sand spot filter 11d is located in front of the photographic lens 2a, the finder filter 11f of the finder filters 11f and 11g is located in front of the finder window 3. At this time, the cross screen filter 11e is arranged at a position shifted from the front surface of the photographing lens 2a, and the finder filter 11g of the finder filters 11f and 11g is arranged at a position shifted from the front surface of the finder window 3. Of the two click-stop small protrusions 11h and 11i (see FIG. 4), the click-stop small protrusion 11h is formed in a portion 12h (see FIG. 4) of the mounting support 12 sandwiched between the two slits 12g. Engaged with a click stop receiver (not shown). Here, when the operation knob 11a of the filter support 11 is operated to rotate the filter support 11 clockwise,
The click-stop small protrusion 11h is disengaged from the click-stop receiver, and the other click-stop receiver 11i is engaged with the click-stop receiver.
As a result, as shown in FIG. 3, a cross-screen filter 11e is arranged in place of the sand spot filter 11d on the front surface of the photographing lens 2a, and another one is provided on the front surface of the finder window 3 instead of the finder filter 11f. Is disposed. Therefore, without removing the photographing attachment 10 from the film 1 with the lens, the filter support 11
By simply turning, it is possible to switch the filter function applied to the photograph.

The filter support of the photographing attachment 10 is a sand spot filter 11d.
Finder filter 11 arranged in front of finder window 3 in addition to cross screen filter 11e
f, 11 g. As mentioned above, these two
Of the two finder filters 11f and 11g, the finder filter 11f is a sand spot filter 1
Reference numeral 1d denotes a filter provided with a pattern in which a filter action A applied to a photograph can be visually recognized. As shown in FIG. 2, the finder filter 11f has a sand spot filter 11d positioned in front of the photographing lens 2a. In this state, it is located in front of the finder window 3. On the other hand, the finder filter 11g is a filter provided with a pattern in which the filter action B imparted to the photograph by the cross-screen filter 11e is provided.
As shown in (1), the finder filter 11g is located in front of the finder window 3 when the cross-screen filter 11e is located in front of the taking lens 2a. Therefore, the user can arrange the filter on the front surface of the photographing lens 2a to photograph regardless of whether the filter arranged on the front surface of the photographing lens 2a is the sand spot filter 11d or the cross-screen filter 11e. The obtained photograph can be imaged and photographed in advance through a viewfinder.

In this embodiment, the filter support 11
Are the sand spot filter 11d and the finder filter 11 as a pair of filters which are simultaneously arranged in front of the photographing lens 2a and the finder window 3, respectively.
f, and a pair of a cross-screen filter 11e and a finder filter 11g are held. However, even if only one type of filter is held by the filter support, the user can pass through the finder of the camera. This does not depart from the gist of the photographing attachment of the present invention in which the photographing effect of the filter can be confirmed.

In the present embodiment, when the filter action is not applied to the photograph, it is necessary to remove the photographing attachment 10 from the film 1 with the lens. However, the filter support 11 may be provided with an opening or a cutout, for example. Accordingly, if both the front surface of the photographing lens 2a and the front surface of the finder window 3 are opened by the rotation position of the filter support 11, the filter support can be performed without removing the photographing attachment 10 from the film 1 with lens. Body 11
By simply rotating, it is possible to take a photograph without adding a filter effect to the photograph. In other words, it is possible to switch between a photographing mode in which a filter effect is applied to a photograph and a photographing mode in which a filter effect is not applied to a photograph while the photographing attachment is attached to the film with lens 1,
The photographing mode can be switched quickly.

The filter support 11 includes a sand spot filter 11d and a cross screen filter 1d.
1e and the finder filters 11f and 11g are integrally molded using a transparent resin. Instead of the filter support 11, an acrylic resin or an optical polycarbonate resin is used as a filter material. A filter support manufactured by using a non-transparent resin as a material of a supporting portion for supporting the filter and formed by a double molding method may be used.

Next, a photographing attachment according to a second embodiment of the present invention will be described. Since the photographing attachment of the second embodiment is different from the photographing attachment of the first embodiment only in the filter support, the photographing attachment of the second embodiment will not be described. Only the filter support will be described with reference to FIGS.

FIG. 5 is a rear view showing a filter support provided in the photographing attachment of the second embodiment.

The filter support 111 has a mounting shaft 111c.
Have a shape in which semicircular portions 111d and 111e having different radii from each other are centered on a rotating shaft 111b integrally formed. An operation knob 111a is provided on the periphery of each of the semicircular portions 111d and 111e. Semicircular part 1 of two semicircular parts 111d and 111e
11d, photographing filters 111f, 111g, 111h arranged in front of the photographing lens 2a (see FIG. 1),
The finder window 3 is arranged so as to be arranged on a concentric circle centered on the rotation axis 111b, and the other semicircular portion 111e.
(See Fig. 1) Viewfinder filter 1 placed on the front
11i, 111j, and 111k are arranged so as to be arranged on a concentric circle centered on the rotation axis 111b. The imaging filters 111f, 111g, and 111h have different filter actions A, B, and C from each other. Also, the finder filters 111i, 111j, and 111k are respectively provided with photographing filters 111f, 111g, and 111g.
h, patterns are provided so that each of the filter actions A, B, and C applied to the photograph can be visually recognized.
Further, on the concentric circle centered on the rotation shaft 111b, a portion 12h of the mounting support 12 (see FIG. 4) sandwiched between the two arc-shaped slits 12g is formed by the rotation of the filter support 111. Two click-stop small protrusions (not shown) which are switchably engaged with the click-stop receiver.

The filter support 11 constructed as described above
Is a filter 11 around the rotation axis 111b.
A set of 1f, 111g, 111h and a set of finder filters 111i, 111j, 111k are arranged on circles having different radii.

As described above, the photographing filters 111f, 1
11g, 111h and a finder filter 111
By arranging a set of i, 111j, and 111k on circles having different radii from each other, compared with the photographing attachment of the first embodiment in which all filters are arranged on concentric circles, There is an advantage that the types of filters provided can be increased in a limited space.

In the first and second embodiments described above, the photographing attachment suitable for a film with a lens has been described. However, the photographing attachment of the present invention is
In addition to a film with a lens, the present invention can be applied to a camera such as a compact camera in which a photographic lens and a finder window are provided at different positions.

FIG. 6 is an exploded view of a lens-equipped film (an example of a camera) according to a third embodiment of the present invention, which is divided into a lens-equipped film body and a filter support supported by the lens-equipped film body. FIG.

In describing the filter support of the lens-equipped film of the third embodiment, the first embodiment
The same components as those of the filter support 11 provided in the imaging attachment 10 of the embodiment are denoted by the same reference numerals, and only the differences from the filter support 11 will be described.

The film with lens 70 is composed of the film body 50 with lens and the film body 5 with lens.
It has a filter support 60 supported by zero.

On the front surface of the film body 50 with a lens,
An attachment portion 51 to which the filter support 60 is attached is formed. The mounting portion 51 is formed integrally with the lens-fitted film body 50 so that the front surface of the photographing lens 53 and the front surface of the finder window 54 are open. In the center of the mounting portion 51, a rotation shaft hole 52 into which a rotation shaft 61 described later of the filter support 60 is fitted is formed.
In addition, on the front surface of the lens-equipped film main body 50, a strobe light emitting portion 55 and a strobe charging switch button 56 for causing the strobe light emitting portion 55 to emit light are provided. Further, a shutter button 57 is provided on the upper surface of the lens-fitted film main body 50.

The filter support 60 is provided with a rotating shaft 61 at the center of the back surface. This rotating shaft 11b
Are surrounded by a sand spot filter 11 d and a cross-screen filter 11 arranged in front of the photographing lens 53.
e, and two finder filters 11f and 11g arranged in front of the finder window 54 are held on concentric circles around the rotation shaft 61.

The film with lens 70 is constructed such that the rotating shaft 61 of the filter support 60 is connected to the film main body 50 with lens.
Is assembled by being inserted into the rotation shaft hole 52 of the mounting portion 51 of the above. In the lens-equipped film 70 thus assembled, the filter support 60 is supported rotatably about the rotation shaft 61 with respect to the mounting portion 51 of the lens-equipped film main body 50.

The film 50 with the lens is provided with a pair of a sand spot filter 11d and a finder filter 11f and a cross screen filter 11e on the front surfaces of the photographing lens 53 and the finder window 54 by rotating the filter support 60. And a pair of the finder filter 11g are arranged to be switchable.

In the above-described first and second embodiments, in order to allow a user to image a photograph to be taken in advance through a viewfinder and take a photograph, a photographing attachment separate from a film with a lens is used. Is attached to the lens-equipped film, but by providing the lens-equipped film 70 itself with the filter support 60 as shown in FIG.
The user can preliminarily image a photograph to be taken through the viewfinder and take a picture.

In the third embodiment, a lens-equipped film has been described as a camera having a filter support. However, other than the lens-equipped film, a photographic lens and a finder window are provided at different positions. For example, a camera such as a compact camera may be used.

The filter support 60 includes a pair of a sand spot filter 11d and a finder filter 11f, a pair of filters arranged simultaneously on the front surfaces of the photographing lens 53 and the finder window 54, and a cross-screen filter 11e. Although two types of filters are held with a pair of the finder filter 11g, one or three or more types of filters may be held by the filter support. Further, the filter support 6
For example, an opening or a notch may be provided at 0 so that both the front surface of the photographing lens 53 and the front surface of the finder window 54 are open.

[0054]

As described above, according to the photographing attachment of the present invention, a filter can be provided and the user can confirm the photographing effect of the filter through the viewfinder of the camera. Further, according to the camera of the present invention, the user can confirm the photographing effect by the filter through the viewfinder.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a film with a lens.

FIG. 2 shows a film with a lens shown in FIG.
It is a perspective view showing the state where an attachment for photography which was an embodiment was attached.

FIG. 3 is a perspective view showing a state in which a cross screen filter is arranged on a front surface of a taking lens.

FIG. 4 is an exploded perspective view of the photographing attachment shown in FIGS. 2 and 3 as viewed from the rear side.

FIG. 5 is a rear view showing a filter support provided in the photographing attachment of the second embodiment.

FIG. 6 is an exploded perspective view showing a film with a lens according to a third embodiment of the present invention, which is disassembled into a camera body and a filter support supported by the camera body.

[Description of Signs] 1,70 Film with lens 2 Lens barrel 2a, 53 Shooting lens 3, 54 Viewfinder window 4, 57 Shutter button 5, 55 Strobe light emitting unit 6, 56 Strobe charge switch button 10 Attachment for shooting 11, 60 , 111 Filter support 11a, 111a Operation knob 11b, 61, 111b Rotary axis 11c, 111c Mounting axis 11d Sand spot filter 11e Cross screen filter 11f, 11g, 111i, 111j, 111k Finder filter 11h, 11i Small protrusion for click stop Reference Signs List 12 Mounting support 12a Rotating shaft hole 12b Lens opening 12c Lens barrel fitting frame 12d Finder opening 12e Hook 12f Through hole 12g Slit 13 Rubber ring 14 Snap ring 50 Ren Per film body 111d, 111e semi-circular section 111f, 111g, 111h imaging filter

Claims (6)

[Claims] 1. A photographing attachment provided on a front surface of a camera having a finder window and a photographing lens on the front surface, and for imparting a filter effect to a photograph photographed by the camera, wherein the photographing lens front surface is provided on the camera front surface. A mounting support that is mounted in a state where both the front and the front of the finder window are open; a photographing filter disposed on the front of the photographing lens for photographing; and a finder filter disposed on the front of the finder window. And a filter supporter, which is rotatably supported by the mounting support and is rotatable, and the finder filter is positioned in front of the finder window with the photographic filter positioned in front of the photographic lens. An attachment for photography characterized by that. 2. The photographing attachment according to claim 1, wherein the photographing attachment is detachably attached to a front surface of the camera. 3. The photographing attachment according to claim 1, wherein the filter support opens both the front surface of the photographing lens and the front surface of the finder window depending on a rotation position. 4. The filter supporter holds a plurality of pairs of a photographing filter and a viewfinder filter, each of which is simultaneously arranged on the front surface of the photographing lens and the front surface of a finder window according to a rotation position. The photographing attachment according to any one of claims 1 to 3, wherein: 5. The filter support according to claim 1, wherein the filter support is integrally formed with a photographing filter and a finder filter held by the filter support. Attachment for photography as described. 6. A camera body having a finder window and a photographic lens on the front, a photographic filter disposed on the front of the photographic lens for photographing, and a finder filter disposed on the front of the finder window. And a filter supporter, which is rotatably supported by the camera body and is rotated and the finder filter is positioned in front of the finder window with the photographic filter positioned in front of the photographic lens. A camera characterized in that: