3D card
The single card design integrates a card image with a 3D image on the front and a reinforcing member and a three-dimensional observation device on the back, addressing the limitations of conventional cards by enhancing visibility and maintaining card integrity.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- ヘヨンチョイ
- Filing Date
- 2025-11-14
- Publication Date
- 2026-06-18
AI Technical Summary
Conventional cards lack a three-dimensional image display capability and are limited by the use of film-based devices, which are costly and disrupt the card's integrity, and existing 3D viewers require a transmissive surface that restricts configuration and size.
A single card design integrates a card image on the front and a three-dimensional image on the back, utilizing an external light window with a reinforcing member and lens system to enable 3D viewing without film, supported by a reinforcing member and lens plate, allowing for a clear 3D image without interruption.
The solution provides a clear 3D image on the card's back, enhancing visibility by 1.5 times, maintaining the card's integrity and functionality, and enabling applications like 3D birthday, Christmas, and business cards without additional lighting devices.
Smart Images

Figure 2026099747000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a three-dimensional card (3D card) configured as a single card with a card image and a three-dimensional image observation device combined.
Background Art
[0002] A card is a printed matter composed of a photo, a picture, an image, etc. on a square flat paper surface, and is used for purposes such as a collection card, a Christmas card, a birthday card, and a postcard. Conventionally, such a card only provides a simple printed image, and no device for showing a three-dimensional image related to the card together with the card image has been presented. Also, a conventional 3D viewer device must form a transmissive surface as a film-shaped device through which light passes from the back surface, so there are limitations in the configuration and size of the card image. Such a film has a too high manufacturing cost by using photographic paper, and its manufacturing and use are restricted by the use of chemical substances in the film itself. Also, although the entire front surface of the card should be a single plate to provide an image, when an additional device is added, a part of the card surface is separated or disconnected by the additional device, resulting in a decrease in the commerciality and function of the card. Therefore, there is a need for a configuration method for a three-dimensional card that provides a card image without interruption on a single plate card, enables viewing a card-related image in three dimensions without using a film, and simultaneously provides a 3D image together with the card image.
Summary of the Invention
Problems to be Solved by the Invention
[0003] The present invention presents a method and structure in which, in a single card, a card image is embodied on the front surface of the card, and a three-dimensional image for viewing a three-dimensional image and a three-dimensional observation structure capable of three-dimensionally observing such a three-dimensional image are combined in a thin film form on the back surface of the card. [Means for solving the problem]
[0004] This invention relates to a single card and a three-dimensional image on the back of such a card. An external light window is provided to brightly illuminate the three-dimensional image formed on the back of the card with ambient light, and a reinforcing member is provided. The external light window is formed on top of this reinforcing member as a base. These reinforcing members and light-gathering windows are configured on the back of the card so that the image on the front of the card can be displayed without interruption. The reinforcing member is configured such that one end in the front-to-back direction is connected to the left and right rear surfaces of the card, and the other end is connected to the upper blocking surface.
[0005] The back of the card features a three-dimensional image, and the card's central section is equipped with a lens plate and left and right shielding films, with left and right lenses on both sides. The upper part of the lens plate forms an upper shielding surface and is connected to one end of the reinforcing member. The lower part of the lens plate is connected to a lower shielding surface, and the lower shielding surface is connected to the lower edge of the card. Furthermore, the card has a horizontal fold line between the center and the bottom surface, a bottom fold line between the bottom surface and the lower shielding surface, and vertical fold lines between the center, the left and right shielding films, and the lens plate, respectively. [Effects of the Invention]
[0006] This invention provides a card image on the front of the card and allows for the observation of a three-dimensional image on the back of the card by providing left and right three-dimensional images on the back of the card. The structure of the light-gathering window formed by the reinforcing member acts with a supporting force that works in conjunction with the card and the stereoscopic observation device, thereby supporting and operating the overall structure of the present invention. The lower surface of the card rotates and moves between the front and rear surfaces below the card, transforming it into a single card or stereoscopic device. In other words, when using the present invention in a three-dimensional image, the lower part of the card is configured to rotate and move in the direction of the back surface, transforming into the lower part of the three-dimensional observation device. This configuration provides the effect of becoming a card when folded and a three-dimensional observation device when in use. Furthermore, by having the external light window structured on the back of the card, it has the effect of providing a continuous, uninterrupted card image. Furthermore, by configuring left and right shielding films at both ends of the card's central section in conjunction with the left and right sides of the lens plate, the optical axis can be horizontally aligned with the left and right lenses for stereoscopic imaging on the back of the card, thereby enabling the observation of a three-dimensional image. Furthermore, a reinforcing member is provided between the central part of the card and the upper blocking surface, and the light-receiving window, which is connected to this reinforcing member as a base, provides support force so that the overall structure is firmly supported and operates when the user uses the present invention. Furthermore, by constructing such an external light window with a reinforcing member as a base at the bottom, the area of the external light window can be increased by more than 50% due to its support capacity. As a result, external light entering from the outside illuminates the surface of the three-dimensional image, and a three-dimensional image that is 1.5 times clearer than before is realized without the need for a separate lighting device. Therefore, in a single card structure, the front of the card provides a continuous image such as a photograph or illustration, and the back of the card allows for the viewing of an image related to the card as a clear, three-dimensional image. This makes it applicable to birthday cards, Christmas cards, business cards, etc., and it can be collected and stored like a collection card or autograph card. [Brief explanation of the drawing]
[0007] [Figure 1] Figure 1 is an explanatory diagram of the overall configuration of the present invention. [Figure 2] Figure 2 is a side view diagram illustrating the configuration of the present invention. [Figure 3] Figure 3 is a reference figure 1 for use in three-dimensional structures. [Figure 4] Figure 4 is a reference figure 2 for use in three-dimensional structures. [Best Mode for Carrying Out the Invention]
[0008] As shown in Figures 1 and 2, the present invention comprises a card 1 and three-dimensional images 3, 3a for the left and right eyes on the back of the card 1, and a reinforcing member 2a for forming an ambient light window 2 that brightly illuminates the three-dimensional images 3, 3a on the back of the card 1 with ambient light. One end of the reinforcing member 2a in the front-to-back direction is connected to the back surface of the card 1, and the other end is connected to the upper blocking surface 6. The upper surface of the reinforcing member 2a is provided with the ambient light window 2 based on the reinforcing member 2a. The card has a central section 1b with left and right eye images 3,3a on its reverse side, and left and right blocking films 4,4a are formed on both the left and right sides of the lens plate 5 which has left and right lenses 5a,5b. The upper part of the lens plate 5 is connected to one end of the reinforcing member 2a of the external light window 2 by an upper shielding surface 6, and the lower part of the lens plate 5 is connected to a lower shielding surface 7. The lower shielding surface 7 is connected to the bottom surface 1c of the card. Furthermore, the card is characterized by having a horizontal fold line 10 between the central part 1b of the card and the bottom surface 1c of the card, a bottom fold line 9 between the bottom surface 1c of the card and the lower shielding surface 7, and vertical fold lines 14, 15, and 16 between the left and right sides of the central part 1b of the card, the left and right shielding films 4, 4a, and the lens plate 5, respectively.
[0009] As shown in Figure 1, the present invention consists of a single card 1 in which an image or photograph on the front of the card 1 is formed without interruption, and as shown in Figure 1, a stereoscopic observation device is attached to a part of the card 1 on the back of the card 1 and formed as part of the card. For the sake of explanation, the structure of card 1 will be divided into three parts vertically: the upper part 1a of the card, the central part 1b of the card, and the lower part 1c of the card. As shown in Figure 1, this type of stereoscopic observation device has a stereoscopic image 3 on the back of the central part 1b of the card, consisting of stereoscopic images 3a and 3b for the left and right eyes. The reason for creating the left and right 3D images 3a and 3b on the back of card 1 is to integrate card 1 and the 3D images into a single card 1 structure. External light enters the upper edge of the 3D image 3 in the central part 1b of the card, forming an external light window 2 that brightly illuminates the surface of the 3D image 3. Such an external light window 2 is equipped with a reinforcing member 2a made of a transparent material such as plastic, and the external light window 2 is constructed using this reinforcing member 2a as a base.
[0010] As shown in Figures 3 and 4, the more ambient light enters the area around the ambient light window 2, the clearer the 3D image becomes. Therefore, the left and right connecting surfaces of the external light window 2 are the parts that are subjected to the most load, connecting the card 1 and the lens plate 5. In actual application, the area around the external light window 2 was formed as a small strip with a width of 5 mm. As a result of applying this configuration, it twisted and broke after 2-3 uses, rendering it unusable. Therefore, even without repeated use, the strip portion around the external light window 2 breaks and becomes unusable, making it impossible to construct the external light window 2.
[0011] To solve these problems, the present invention, as shown in Figure 4, constructs a reinforcing member 2a from a single material among rigid paper, plastic sheet, reinforcing tape, and transparent film on the entire left, right, front, and rear surfaces of the light window 2 connected to the card 1, and uses this as a base to construct the light window 2 on its upper surface, making it as large as possible. The area of the light-gathering window 2 formed by such reinforcing member 2a can be increased by more than 50% due to the support force of the reinforcing member 2a, making it possible to view 3D images that are approximately 1.5 times clearer. Since printing on the surface of such an external light window 2 is not possible, it is configured on the back of card 1. This configuration does not affect the composition of the card image on the front of card 1. In such an invention of the present disclosure, at the upper end of the lens plate 5, it is associated with an upper shielding surface 6 connected to the external light window 2, and at the lower end of the lens plate 5, it is configured in association with a lower shielding surface 7. The lower end of the lower shielding surface 7 is also associated with the lower end of the lower part 1c of the card.
[0012] For each component of such an invention of the present disclosure, the upper end of the central part 1b of the card and the lower end of the external light window 2 are associated by a horizontal folding line 13, the upper end of the external light window 2 and the upper end of the upper shielding surface 6 are associated by an upper folding line 8, the lower end of the upper shielding surface 6 and the upper end of the lens plate 5 are associated by a horizontal folding line 11, the lower end of the lens plate 5 and the upper end of the lower shielding film 7 are associated by a horizontal folding line 12, and the lower end of the lower shielding surface 7 is associated with the lower end of the lower surface 1c of the card by a lower folding line 9. The front of the left side of the central surface 1b of the card and the left shielding film 4 are associated by a vertical folding line 14, the rear of the left shielding film 4 and the lens plate 5 are associated by a vertical folding line 16, and in the center of the left shielding film 4, a vertical folding line 15 is formed so that the left shielding film 4 is folded and unfolded in the front - rear direction. The right shielding film 4a is also configured with the same logic as the configuration of the left shielding film 4. In such an invention of the present disclosure, on both the left and right sides of the central part 1b of the card, on the left side, it is configured in association with one side of the left shielding film 4, on the right side, it is associated with one side of the right shielding film 4a. The other side of the left shielding film 4 is also associated with the left end of the lens plate 5, and the other side of the right shielding film 4a is also configured in association with the right end of the lens plate 5.
[0013] Further, in the present invention, a horizontal folding line 10 is provided between the central part 1b of the card and the lower surface 1c of the card, vertical folding lines 14, 15, 16 are provided between the left and right sides of the central part 1b of the card and the left and right shielding films 4, 4a, and between the left and right shielding films 4, 4a and the lens plate 5, an upper folding line 8 is provided between the external light window 2 and the upper shielding surface 6, and a lower folding line 9 is provided between the lower surface 1c of the card and the lower shielding surface 7. Thus, the reason for providing the left shielding film 4 and the right shielding film 4a on both the left and right sides of the back surface of the central part 1b of the card, that is, on both sides of the left - and - right eye images 3a, 3b for three - dimensional use, and associating them with the lens plate 5 is to configure them so that the centers of the left - and - right eye images 3a, 3b coincide with the optical axes of the left and right lenses 5a, 5b of the lens plate 5, enabling the observation of three - dimensional images. When used for three-dimensional observation, as shown in FIGS. 3 and 4, when the user presses the upper folding line 8 and the lower folding line 9, the left and right shielding films 4 and 4a are deployed and are aligned with the centers of the left and right eye images 3 and 3a formed on the back surface of the card 1 by the reinforcing member 2a and the optical axes of the left and right lenses 5a and 5b formed by the lens plate 5. Also, the heavy lens plate 5 and the back surface of the card 1 are firmly connected by the reinforcing member 2a to firmly maintain the horizontal of the optical axis.
[0014] Also, as shown in FIGS. 1 and 2, when the lower surface 1c of the card is composed of a vertical line up and down by the horizontal folding line 10, the overall structure of the card 1 becomes one card 1 structure. As shown in FIGS. 3 and 4, when the user presses the upper folding line 8 and the lower folding line 9, the lower surface 1c of the card is folded backward and the left and right shielding films 4 and 4a are deployed while moving the lens plate 5 to the focal length position of each lens, converting it into a three-dimensional observation device. If the upper folding line 8 and the lower folding line 9 are folded again, it is restored to the card form of the thin film structure as shown in FIGS. 1 and 2. That is, as shown in FIGS. 3 and 4, if the lower surface 1c of the card rotates backward by the horizontal folding line 10 formed between the central portion 1b of the card and the lower surface of the card to form the lower shielding surface 7 and the bottom surface, it becomes a three-dimensional observation device while the left and right shielding films 4 and 4a are deployed in the front-rear direction. If the lower surface 1c of the card rotates and returns to the lower part of the card 1, it becomes the form of the thin film card 1 as shown in FIG. 1.
[0015] As shown in FIGS. 1 and 2, the present invention is composed of one card 1 without interruption on the front surface of the structure, and the center of the three-dimensional image coincides with the optical axes of the left and right lenses 5a and 5b by the left and right shielding films 4 and 4a. The lower surface 1C of such a card rotates backward by the horizontal folding line 10, and the periphery of the outer light window 2 is configured based on the reinforcing member 2a, enabling a strong supporting force for the outer light window 2, which is the feature of the present invention. Therefore, the present invention makes it possible to provide both an image of card 1 and a three-dimensional image with a single card, by configuring the card 1 itself with an external light window 2 on the back side equipped with three-dimensional left and right eye images 3, 3a, left and right shielding films 4, 4a and a reinforcing member 2a, and a lens plate 5 equipped with left and right lenses 5a, 5b. In other words, the present invention is constructed by combining a card 1 with a three-dimensional observation structure on the back of such card 1, and such a structure provides a single card image on the front and a three-dimensional image on the back of card 1, thus forming a three-dimensional card. Therefore, the present invention can be applied to three-dimensional cards such as 3D Christmas cards, 3D birthday cards, 3D business cards that provide a three-dimensional image, 3D autograph cards of celebrities such as sports figures and entertainers, and 3D collection cards of animation and manga characters. [Explanation of Symbols]
[0016] 1 card 1a Top of the card 1b Center of the card 1c Bottom of the card 2. External light window 2a Reinforcement member 3. Image for the left eye 3a Image for the right eye 4 Left-side shielding film 4a Right-hand barrier film 5 Lens plate 5a Left lens 5b Right lens 6 Upper shielding surface 7 Lower shielding surface 8. Top fold line 9. Bottom fold line 10, 11, 12, 13 Horizontal fold lines 14, 15, 16 Vertical fold lines
Claims
1. In three-dimensional cards, One card (1); A three-dimensional image (3) provided on the back of the aforementioned card (1); A reinforcing member (2a) is formed on the back surface of the upper part 1a of the card (1); An external light window (2) is constructed based on the reinforcing member (2a); Left and right shielding films (4, 4a) provided on both the left and right sides of the central part (1b) of the card (1); A lens plate (5) provided in conjunction with the left and right shielding films (4, 4a); The card (1) is configured to include a lower blocking surface (7) that is connected to the lower surface (1c) of the card, A three-dimensional card characterized in that, in the structure of one card (1), the front surface is provided with an image of the card (1), and the rear surface is provided with the three-dimensional image (3).
2. A horizontal fold line (10) is provided between the central part (1b) of the card and the bottom surface (1c) of the card. Vertical fold lines (14, 15, 16) are provided between the left and right sides of the central part (1b) of the card and the left and right shielding films (4, 4a), and between the left and right shielding films (4, 4a) and the lens plate (5). An upper fold line (8) is provided between the aforementioned light-gathering window (2) and the upper blocking surface (6). The three-dimensional card according to claim 1, characterized in that a lower fold line (9) is provided between the lower surface (1c) of the card and the lower barrier surface (7).