JP2003280086A - Filter device for disposable camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter device for a disposable camera which prevents a user from feeling troublesome in the case of carrying the device and is instantaneously attached to the camera by realizing the reduction of cost and the miniaturization matched with the low-priced disposable camera. <P>SOLUTION: The filter device is constituted of a filter holder 2 fit on the disposable camera 1 and having a hole 2A communicating with the lens 1A of the camera 1 in such a fit state, and a filter frame 3 holding a plurality of filters while the filters are arranged in series. The filter holder 2 has a guide part 2A guiding the filter frame 3 so as to set a plurality of filters on the optical axis of the lens 1A. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter device for a single-use camera that enables filter photographing.

[0002]

2. Description of the Related Art In recent years, disposable cameras with built-in film have been released by each film maker and sold at convenience stores, station shops, souvenir shops in tourist areas, etc. in addition to camera stores, and you can get them anywhere. It is widely used due to its ease of entry, easy handling, and low price. Meanwhile, some buyers of single-use cameras have a demand for color rendering and special effect photography using a color filter or a soft focus filter depending on the subject. Those who wanted to try the filter shooting either made a commercially available gelatin or poly-carbon color filter and made it themselves, or acquired a general camera filter for shooting. However, since gelatin and polycarbonate are thin films and are easily scratched and dusty, and general camera filters are made of glass or plastic, they must be handled with care.

In response to such a request from a filter photographing applicant, there is a "camera filter device" disclosed in, for example, Japanese Patent Application Laid-Open No. 11-218800. This is to attach multiple filters to a disc-shaped filter frame and rotate them in front of the lens.It is written on the basis of a disposable camera, but "If each size is adapted, it is a general single lens reflex camera. It can also be mounted on a medium format camera (Brownie size). " However, there are the following problems. (1) It has a complicated structure and is suitable for an expensive camera, but it is expensive for a low-priced disposable camera. (2) The method of attaching the filter device to the camera is to rotate the set dial and move and hold the support plate according to the thickness of the camera, and it is troublesome to fix the camera. (3) Since the filter frame is a disc type, if a disc frame of a size suitable for a disposable camera is used, the number of filters that can be attached to one disc is limited, and if you want to increase the number of filters, you must secure a separate storage space. I won't.

[Problems to be Solved by the Invention]

In order to solve the above problems, the present invention provides
(1) Cost reduction commensurate with low-priced disposable cameras,
By making it compact and lightweight, it does not bother you to carry it even when it is always attached to the camera. The number of filters can be increased by arranging them at the same time, and the filters can be removed and replaced from the filter frame, so you can carry many filters that match the subject at any given time, and color effects and special effect shooting are the same as shooting with a high-end camera. It is intended to provide a filter for a disposable camera which can be widely enjoyed.

[0005]

The object of the present invention is to arrange a filter holder, which is fitted in a disposable camera and has a hole communicating with the lens of the disposable camera in the fitted state, and a plurality of filters of different types in series. A filter device for a disposable camera, comprising a filter frame held, and a filter holder having a guide part for guiding the filter frame and positioning a plurality of filters on the optical axis of the lens. To be achieved.

The above object can also be achieved by a filter device for a disposable camera, characterized in that the filter holder has a storage portion for the filter frame.

The above object can also be achieved by a filter device for a disposable camera, which has a tripod fixing screw hole for attaching a tripod to a filter holder.

[0008]

DETAILED DESCRIPTION OF THE INVENTION

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is a perspective view of a filter device for a disposable camera of an embodiment, FIG. 2 is a perspective view of a disposable camera in FIG. 1, FIG. 3 is a perspective view of a filter holder in FIG. 1, and FIG. 4 is a perspective view of a filter frame in FIG. Is. FIG. 5 is a perspective view of a filter holder having a storage portion, and FIG. 6 is a side view of the filter holder provided with a tripod mounting screw hole. 7 shows a plate holder having a leaf spring attached to the inner surface side of one open end wall thereof, and FIG. 8 shows the filter holder having one open end wall thereof as a leaf spring.

[0010]

[Embodiment 1] Embodiment 1 will be described with reference to FIGS.

In the figure, reference numeral 1 is a disposable camera, and 2 is a U-shaped filter holder fitted into the camera 1.
In this embodiment, the filter holder 2 is formed to have a size to fit the camera 1. The filter holder 2 is provided with a hole 2A that communicates with the lens 1A of the camera 1 in the fitted state.

A filter frame 3 is attached to a guide portion 2B provided in the hole 2A of the filter holder 2 so as to be slidable in the left and right directions. The filter frame 3 is provided with five windows in its length direction, and the filters of yellow a, pink b, sepia c, cross filter d, and soft focus filter e are attached from the left side of FIG. ing.

That is, the filter frame 3 comprises a base frame 3A and a pressing frame 3B, and both frames 3A and 3B are provided with five windows A, B, C, D and E which communicate with each other when they are stacked. . A yellow a, a pink b, a sepia c, a cross filter d, and a soft focus filter e are attached to each of the windows A to E with an adhesive in a detachable manner. Both frames 3
A and 3B can be adhered by an adhesive surface 3C provided on the opposite surface.

A protrusion is provided on the side edge of the base frame 3A at a position corresponding to the center of each of the windows A to E. This protrusion t
When the filter frame 3 is fitted in the guide portion 2B of the filter holder 2, the filters a to e of the filter frame 3 are fitted into the recess m provided at the center of the edge of the hole 2A so that the filters a to e are in the lens 1A.
Positioned on top.

The filter holder 2 is fitted into the camera 1 by fitting the annular convex portion 1B around the lens of the camera 1 into the circular concave portion 2C provided in the filter holder 2.

Since the disposable camera filter device according to the first embodiment has the above-described structure, the device is attached to the camera 1 in the following manner. (1) First, the filter holder 2 is fitted into the disposable camera 1. (2) Next, the filter frame 3 is inserted into the guide portion 2B of the filter holder 2. (3) Arbitrary filters to be used are arranged on the optical axis of the lens.

According to this embodiment, since it has the above-mentioned structure, the filter frame 3 can be slid to adjust an arbitrary filter to the position of the lens.

In the first embodiment, the filter holder 2 has a size that fits exactly into the camera 1. However, as shown in FIG. 7, the inner width of the filter holder 2 is made larger than the thickness of the camera 1 so that one open end of the filter holder 2 is opened. A curved leaf spring 2E may be attached to the inner surface side of the wall 2D so that the camera 1 can be elastically clamped by utilizing the elasticity of the leaf spring 2E.

Also, as shown in FIG. 8, one open end wall of the filter holder 2 is made of a leaf spring S so that the elasticity of the leaf spring S can be used to elastically clamp the camera 1. Good.

[0020]

Second Embodiment In a second embodiment, the filter holder 2 in the first embodiment is provided with a filter frame storage portion 4A. That is, as shown in FIG. 5, the bottom plate, which corresponds to the bottom of the camera, has substantially the same length as the filter frame 3, and the filter frame 3 is inserted therein.
Is provided so that the filter frame 3 can be stored when not in use. Other configurations are
It is the same as the first embodiment, and the operation effects are also the same.

[0021]

Third Embodiment As shown in FIG. 6, the third embodiment is similar to the first embodiment.
A screw hole 5A into which a tripod fixing screw is screwed is provided at approximately the center of the bottom plate of the filter holder 2 in FIG. The other configurations are the same as those of the first embodiment, and the effects are the same.

[0022]

As described above, since the filter device for a disposable camera of the present invention has the above-mentioned structure, it has the following effects. (1) Cost reduction commensurate with low-priced disposable cameras,
Miniaturization that does not bother you to carry it even when it is always attached to the camera. (2) Since the filter device can be attached to the camera instantly, there is no risk of missing a photo opportunity. (3) The filter of the filter frame can be exchanged, and it is possible to shoot with an original filter made by myself. For photo enthusiasts who enjoy shooting casually with a disposable camera in their pockets, they can enjoy the same color effects and special effects as with high-end cameras, and can enjoy a wide range of photos.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a filter device for a disposable camera of Example 1 is attached to a disposable camera.

FIG. 2 is a perspective view of the disposable camera shown in FIG.

FIG. 3 is a perspective view of the filter holder in FIG.

FIG. 4 is a perspective view of a filter frame in FIG.

FIG. 5 is a perspective view of a filter holder provided with a storage portion for a filter frame in the filter device for a disposable camera according to the second embodiment.

FIG. 6 is a side view of a filter holder provided with a screw hole for fixing a tripod in a filter device for a disposable camera according to a third embodiment.

FIG. 7 is a side view showing a state in which a leaf spring 2E is provided inside the open end wall 2D of the filter holder 2 in the first embodiment.

FIG. 8 is a side view showing a state in which the open end wall 2D of the filter holder 2 is changed to a leaf spring S in the first embodiment.

[Explanation of symbols]

1 camera (disposable camera) 1A lens 1B annular protrusion 2 Filter holder 2A hole 2B guide part 2C circular recess 2D open end wall 2E leaf spring 3 filter frames 3A base frame 3B holding frame 3C Adhesive surface 4A frame storage 5A screw hole S leaf spring t convex m recess A, B, C, D, E windows a, b, c, d, e filters

Claims (3)

[Claims] 1. A filter holder that is fitted to a disposable camera and has a hole that communicates with the lens of the disposable camera in the fitted state, and a filter frame that holds a plurality of different filters arranged in series, and The filter device for a disposable camera, wherein the filter holder has a guide portion that guides the filter frame and positions the plurality of filters on an optical axis of a lens. 2. The filter device for a disposable camera according to claim 1, wherein the filter holder has a storage portion for a filter frame. 3. The filter holder has a screw hole into which a set screw of a tripod is screwed.
The filter device for the disposable camera described.