JPH07281127A - Stereoscopic photograph viewing sheet - Google Patents

Abstract

PURPOSE:To provide a thin stereoscopic photograph viewing sheet which is conveniently carried and mailed and comparatively strong with respect to impact without damaging a function as a stereoscopic photograph sheet. CONSTITUTION:This is the stereoscopic photograph viewing sheet constituted by being provided with a lens part 2 having a pair of lenses 2a for stereoscopic vision at one end part of a postcard-like sheet 1 and an image part 3 where a pair of pictures for stereoscopic vision is arranged in parallel at the other end part and forming the lens part 2 and the image part 3 so as to rise through the focal distance of the lens. Then, the lens part 2 is constituted of a Fresnel lens film 2a whose thickness is 80-200mum and stuck to the end part of the sheet 1 so that it can be peeled. Since the stereoscopic photograph viewing sheet becomes almost the postcard-like sheet when it is not used, it is conveniently carried and mailed and it becomes comparatively strong with respect to impact and thin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional photograph viewing sheet having a postcard sheet provided with a lens for stereoscopic vision and a photograph.

[0002]

2. Description of the Related Art Conventionally, a stereoscopic image viewing apparatus that allows a still photograph to be viewed as a stereoscopic image has been disclosed in, for example, Syokai Sho 49.
-44259, Japanese Utility Model Publication No. 49-17676,
It is disclosed in Japanese Utility Model Publication No. 52-22276 and the like, and the inventor of the present application also discloses in Japanese Patent Application Laid-Open No. 2-275921.
Proposing a stereoscopic photo viewing sheet that has a postcard-like sheet and a lens for stereoscopic viewing, this stereoscopic photo viewing sheet allows you to easily and inexpensively create a stereoscopic image without being restricted by time and place. It can be enjoyed, it becomes a plate shape when folded or expanded, and it is extremely convenient to store and carry. By making the size of the sheet about the size of a postcard, you can use it as cards for New Year's cards, wedding greeting cards, etc. It is possible to obtain effects such as being able to.

[0003]

However, Japanese Unexamined Patent Application Publication No.
The stereoscopic photo viewing sheet proposed in Japanese Patent No. 275921,
Use a lens with a thickness of 0.5-2 mm,
It is attached by adhering this to a step formed by a through hole formed in a main body sheet having a diameter slightly larger than the lens and a through hole formed in a backing sheet having a diameter slightly smaller than the lens. .

As described above, since the so-called convex lens such as glass or plastic is used as the lens in the stereoscopic picture viewing sheet described in the publication, the lens portion formed by this is bulky and heavy. There is. Further, although the convex lens is reinforced by the backing sheet, there is a problem that the lens itself is fragile and easily damaged.

Therefore, an object to be solved in the present invention is to provide a thin three-dimensional photographic viewing sheet which is convenient for carrying or mailing and which is relatively strong against impact without damaging the function as a three-dimensional photographic sheet. It is in.

[0006]

In order to solve the above-mentioned problems, the three-dimensional photograph viewing sheet of the present invention is provided with a lens portion provided with a pair of lenses for stereoscopic vision at one end of a postcard sheet. In the stereoscopic picture viewing sheet, the other end is provided with an image part in which a pair of images for stereoscopic viewing are juxtaposed, and the lens part and the image part are formed so as to be able to stand up through the focal length of the lens, Part, thickness 80-2
The Fresnel lens film is composed of a Fresnel lens film having a thickness of 00 μm and is releasably attached to an end portion of the postcard sheet. Here, the Fresnel lens film is a transparent film such as polyethylene having a thickness of 80 to 200 μm. In addition, a Fresnel lens having a focal length of 60 to 100 mm is formed, and has a characteristic peculiar to the Fresnel lens that the thickness can be reduced. Fresnel lens film thickness is 80 μm
When it is less than 200 μm, it is difficult to form concavo-convex concavities and convexities of the Fresnel lens, and when it exceeds 200 μm, the flexibility is lowered and the handleability is deteriorated.

Here, in order to avoid the "blurring of the center" peculiar to the Fresnel lens, the distance between the optical axis centers of the left and right lenses is made wider than the average eye distance 62 mm of a normal person (6 mm).
5 to 70 mm) or narrow (55 to 60 mm).

The Fresnel lens film and the sheet end can be connected by a double-sided adhesive tape. That is, using a double-sided adhesive tape having a strong adhesive portion and a weak adhesive portion on the front and back surfaces and a length longer than the Fresnel lens film, with the strong adhesive portion on the sheet side, the sheet is the length of the Fresnel lens film. Stick it on the edge and fold the remaining double-sided adhesive tape to bond the strong adhesive to the Fresnel lens film. Furthermore, the Fresnel lens film can be made peelable and capable of rising by being attached to the weakly adhesive portion of the double-sided adhesive tape.

[0009]

When not in use, the thickness of the postcard sheet is 8 at the end.
When the Fresnel lens film having a thickness of 0 to 200 μm is releasably attached, the outer shape of the stereoscopic photograph viewing sheet becomes substantially the same as that of a postcard sheet.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The features of the present invention will be specifically described below with reference to the embodiments shown in the drawings.

FIG. 1 is a front view of a stereoscopic photo viewing sheet according to an embodiment of the present invention, and FIG. 2 is a side view of the same.

In the figure, reference numeral 1 is a postcard sheet, and a lens portion 2 having a pair of stereoscopic lenses 2a, 2a is formed at one end portion of the postcard sheet 1, and at the other end. An image section 3 in which a pair of images 3a for stereoscopic viewing, and 3a are juxtaposed is provided.

The lens portion 2 is composed of a Fresnel lens film having a thickness of 80 to 200 μm, and is peelably attached to the end portion of the postcard sheet by a double-sided adhesive tape 4, as clearly shown in FIG. There is. Here, in order to avoid the "blurring of the center" peculiar to the Fresnel lens, the distance between the optical axes of the lenses 2a, 2a is wider (65 to 70 mm) or narrower (55 mm) than the average eye distance 62 mm of a normal person. -60 mm).

The double-sided adhesive tape 4 has a strong adhesive portion 4a having a strong adhesive force on the back surface and a weak adhesive portion 4b having a weak adhesive force on the front surface side, and is made longer than the lens portion 2 by the bending amount. There is. The double-sided adhesive tape 4 is attached to the end of the sheet 1 by the length of the lens portion 2, the remaining portion is bent upward, and the end of the strong adhesive portion 4a of about 5 mm is adhered to the lens portion 2. .

As a result, the back surface of the lens portion 2 formed of the Fresnel lens film shown in FIG. 2 is releasably adhered to the weak adhesive portion 4b of the double-sided adhesive tape 4, and when used, as shown in the explanatory view of FIG. In addition, it is possible to easily bring the system into a state where it is repeatedly started up. In addition, since the front and back surfaces of the double-sided adhesive tape 4 have different adhesive strengths, it is possible to prevent the lens portion 2 from falling off and to easily start up the lens portion 2.

FIG. 4 is a perspective view showing a usage state of the stereoscopic photograph viewing sheet shown in FIG. 1, and a fold line 5 is provided at the lower end of the image portion 3 of the postcard sheet 1, and the fold line 5 is folded at about 90 °. Launch. Further, the lens portion 2 is peeled off from the double-sided adhesive tape 4 and is raised so as to face the image portion 3. In this state, a stereoscopic image can be viewed by looking through the lenses 2a, 2a of the lens unit 2 with both eyes.

As described above, the three-dimensional photograph viewing sheet of this embodiment has a thickness of 80 at the end of the postcard sheet when not in use.
By peeling off the ~ 200μm Fresnel lens film, the external appearance of the stereoscopic photo viewing sheet is almost the same as that of a postcard sheet, and can be carried or mailed without damaging the function of the stereoscopic photo sheet. It is a convenient, thin, 3D photo viewing sheet that is relatively shock resistant.

5 to 7 are views showing an example of a method of joining the sheet 1 and the lens portion 2. In the figure, the same reference numerals are given to those corresponding to the previous embodiment. Also,
In the figure, 6 is a single-sided adhesive tape, and 7 is an adhesive material or a double-sided adhesive tape. These figures are exaggerated in thickness to aid understanding.

Here, FIGS. 5 (a) to 5 (c) show the adhesive tape 6 partially attached to both the sheet 1 and the lens portion 2, and FIG. 5 (a) shows the sheet 1 and the lens portion 2 respectively. The bottom of each is attached from the top with adhesive tape 6,
(B) shows the sheet 1 and the lens portion 2 which are bent in a U shape and attached with the adhesive tape 6, and (c) shows the sheet 1 and the lens portion 2 attached with the adhesive tape 6 on the outside. Shown respectively. In these figures, double-sided adhesive tape 4
The lower surface is a strong adhesive surface and the upper surface is a weak adhesive surface.

FIG. 6 (a) shows the double-sided adhesive tape 4 whose upper surface has a strong adhesive surface and whose lower surface has a weaker adhesive surface.
I'm trying to paste. FIGS. 6B to 6D show modifications of FIGS. 5A to 5C, respectively.

In FIG. 7, the lower portion of the sheet 1 is bent and the lens portion 2 is attached to this bent portion. Figure 7
In (b) and (d), a hole or a window is opened in the bent portion of the sheet 1 so that the lens portion 4 can be seen through.

[0022]

As described above, in the three-dimensional photographic appreciation sheet of the present invention, the Fresnel lens film having a thickness of 80 to 200 μm is releasably attached to the end of the postcard sheet when not in use. As a result, the external appearance of the 3D photo viewing sheet is almost the same as that of a postcard sheet, and the thin 3D photo viewing is convenient for carrying or mailing without compromising the function of the 3D photo sheet, and is relatively resistant to shocks. It becomes a sheet.

[Brief description of drawings]

FIG. 1 is a front view of a stereoscopic photograph viewing sheet according to an embodiment of the present invention.

FIG. 2 is a side sectional view of a stereoscopic photo viewing sheet according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a bonded state of a sheet and a lens portion.

FIG. 4 is a perspective view showing a usage state of the stereoscopic photo viewing sheet shown in FIG. 1.

FIG. 5 is a diagram illustrating an example of a method of joining a sheet and a lens unit.

FIG. 6 is a diagram showing an example of a method of joining a sheet and a lens unit.

FIG. 7 is a diagram showing an example of a method of joining a sheet and a lens unit.

[Explanation of symbols]

1 postcard sheet, 2 lens part, 2a Fresnel lens, 3 image part, 3a image, 4 double-sided adhesive tape, 4a
Strong adhesive portion, 4b Weak adhesive portion, 5 folds, 6 adhesive tape, 7 double-sided adhesive tape

Claims (1)

[Claims] 1. A postcard sheet is provided with a lens section having a pair of lenses for stereoscopic vision at one end thereof, and an image section having a pair of images for stereoscopic vision arranged at the other end thereof, A stereoscopic image viewing sheet in which a lens portion and an image portion are formed so as to be able to stand up through the focal length of the lens, wherein the lens portion is formed of a Fresnel lens film having a thickness of 80 to 200 μm, and the postcard sheet. A stereoscopic photo viewing sheet, which is detachably attached to the edge of the.