JP2014238493A - Exhibition device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exhibition device that can display a stereoscopic two-dimensional video impressively and effectively in association with an exhibit placed on the top face.SOLUTION: An exhibition device of the present invention includes an imaging optical element (micromirror array 1) that is disposed on the top face 10a of a housing (case 10) accommodating a display 2, the display 2 that is arranged inclined relative to the bottom face of the imaging optical element, and exhibition position guiding means (mark M1) provided on the top face 10a of the housing to be a mark for the position to place an exhibit (D), and displays a video (I) displayed on a display surface 2a of the display 2 as a spatial image (I') associated with the exhibit (D) through the imaging optical element.

Description

  The present invention relates to an exhibition apparatus capable of effectively displaying a three-dimensional two-dimensional image that rises in space in cooperation with exhibits such as figures and products placed on the upper surface of a housing. is there.

  An image transmission panel that forms the image (spatial image) in a space on the front side (viewer side) of an image display surface (liquid crystal display panel or the like) that displays an image including a stereoscopic image, separated from the display surface. An image display device in which (imaging optical element) is arranged has been proposed (see, for example, Patent Document 1).

  The image display device includes a pair of microlens arrays (imaging optics) including a plurality of convex lenses (unit optical elements) arranged adjacent to each other in a matrix form on both surfaces at positions spaced parallel to the image display surface. Element) is arranged, and this microlens array forms an image in a space opposite to the display surface (position opposite to the display surface with respect to the element surface of the imaging optical element). Thus, an erecting equal-magnification image of the image can be projected (formed).

  Further, a three-dimensional frame such as a water tank is provided around a position where an erecting equal-magnification image (spatial image) of the image is formed, and an aquatic plant is disposed in the vicinity (front and back) of the image, An example in which a virtual aquarium is reproduced by arranging rocks and projecting a fish-like object (aquatic dynamic) between them has also been proposed (see Patent Document 2).

  However, in the image display device, the image formation (aerial image) is projected directly in front of the microlens array. In order to properly appreciate the aerial image, the viewer, the microlens array, and the image display are displayed. It is necessary to align the surface with a straight line, and there is a drawback that it is difficult to obtain a three-dimensional effect or a sense of reality.

  On the other hand, the applicant of the present invention has disclosed a concave unit optical element or a convex unit having two mirror surfaces (corner reflectors) orthogonal to each other in Japanese Patent Application Nos. 2012-249682, 2012-259047, 2012-283072, and the like. A display device including a flat imaging optical element (micromirror array, see Patent Document 3) in which a large number of optical elements are arranged and a flat panel display such as an LCD is proposed.

  As shown in FIG. 20, this is a flat panel display (hereinafter referred to as display D) whose display surface Da has a predetermined angle α with respect to the element surface (P) of the imaging optical element (micromirror array A). It is configured to be disposed on the other surface side (lower side) of the imaging optical element in an inclined state (30 ° or more and less than 90 °). As a result, the display device displays an aerial image (I ′) rising obliquely toward the front side (viewer E side) on one surface side (above the apparatus) of the imaging optical element. The image can be clearly displayed in a state of being raised from the upper surface. In FIG. 20, the plane indicated by the symbol V (the frame of the two-dot chain line) indicates the displayable range of the aerial image I ′ projected from the display D (that is, the “virtual display area” of the aerial image I ′). .

JP 2001-255493 A JP 2001-255494 A International Publication No. WO2007 / 116639

  By the way, the three-dimensional display device as described above gives a strong impression that is not found in conventional flat panel displays such as LCD, PDP, EL, etc., for personal use. Assuming commercial use for advertising exhibitions (signage), presentations, etc., and private use for games, photo appreciation, diorama, etc., there may be situations where the impact and eye-catching power are unsatisfactory.

  Therefore, in order to increase the impact and eye catching power, especially in commercial use, rather than using the display (stereoscopic two-dimensional video) alone, this stereoscopic two-dimensional video and the actual article (exhibit) And products etc.) are displayed (exhibited) together. However, when displaying a combination of a stereoscopic 2D image and an article (exhibit), if the positional relationship is inappropriate, the image and the exhibit will not be linked, and the stereoscopic effect of the image will be impaired. It has been found that there may be adverse effects such as that the purpose and intention of the exhibition are not communicated (cannot be understood).

  The present invention has been made in view of such circumstances, and is an exhibition apparatus that can display a stereoscopic two-dimensional image in an impressive and effective manner in cooperation with an exhibit placed on the upper surface. The purpose is to provide.

  In order to achieve the above object, the present invention provides an imaging optical element disposed in a light-transmitting manner on the upper surface of a housing that accommodates a display, and an imaging optical element below the imaging optical element. A display arranged with the display surface inclined at a predetermined angle with respect to the lower surface, and the image displayed on the display surface of the display is displayed above the upper surface of the housing via the imaging optical element. An aerial image that rises diagonally and displays the aerial image together with an exhibit placed on the upper surface of the casing, the imaging optical element on the upper surface of the casing A configuration in which exhibit position guide means serving as an indication of the placement position of the exhibit is disposed in the surrounding area is a first gist.

Further, in the present invention, particularly in the above configuration, the exhibit position guide means is a position other than the top surface of the imaging optical element on the top surface of the casing and satisfies the following formula (1). The exhibition apparatus arranged in the above is a second gist.
L ≦ X (1)
[In Formula (1), L is the distance between the center of the upper surface of the imaging optical element and the exhibit position guide means. X is the larger value of the diagonal length of the upper surface of the imaging optical element or the maximum diameter of the upper surface of the imaging optical element. ]

  That is, the present inventor repeated research to solve the above problems, and as a result, the distance between the aerial image above the housing on which the image of the display is imaged and the exhibits arranged around it is If the distance is below a certain distance, binocular parallax tends to occur between this exhibit and the aerial image, so that this aerial image can be felt more three-dimensionally and more realistically. I found out that However, the position where the exhibit is placed on the upper surface of the apparatus is likely to vary depending on the user, and it is difficult to appropriately set (control) the distance between the exhibit and the image. Therefore, the present inventor provides an exhibition position guide means that can keep the distance between the exhibit and the image optimally on the upper surface of the apparatus, so that anyone can easily and constantly exhibit. The present inventors have found that it is possible to experience the linkage between an object and a stereoscopic two-dimensional image, and have reached the present invention.

  Since the display (display surface) and the imaging optical element used in the present invention are mostly quadrangular shapes such as a square and a rectangle, the intersection of the diagonal lines is the center of the upper surface of the imaging optical element. (Center point). Further, when the upper surface shape of the imaging optical element is a circle or an ellipse, the center of curvature (the intersection of the maximum diameter line and the minimum diameter line) is the center point. Furthermore, when the upper surface of the imaging optical element is another polygon or a deformed shape, the center of the intersection of the maximum diameter line and the minimum diameter line or the center of area of the entire shape may be used.

  An exhibition apparatus according to the present invention includes an imaging optical element disposed on an upper surface of a housing that accommodates a display, and a display disposed with a display surface inclined at a predetermined angle with respect to the lower surface of the imaging optical element. And a guide (guide) for a suitable placement position of an exhibit for amplifying the stereoscopic effect of the aerial image displayed above the upper surface of the housing in an area around the imaging optical element. Exhibit position guide means is provided.

  With this configuration, the display device of the present invention can display the image displayed on the display as a two-dimensional image with a richer stereoscopic effect in a rich and realistic manner in comparison with and in connection with the exhibit. In addition, the display device of the present invention can be a display device with high persuasive power and appeal to the other party in commercial use such as advertisement display and presentation.

  In the exhibition apparatus of the present invention, the exhibit position guide means has a distance (L) between the exhibit position guide means and the center of the upper surface of the imaging optical element on the upper surface of the casing. An item placed in a region (L ≦ X) that is equal to or less than the larger value (X) of the diagonal length of the upper surface of the imaging optical element or the maximum diameter of the upper surface of the imaging optical element is The contrast and linkage with the aerial image becomes denser, and the binocular parallax between the exhibit and the aerial image increases, so that the stereoscopic effect of the aerial image is further improved. Therefore, according to the above-described exhibition apparatus, it is possible to make an impressive display with a feeling of floating and presence.

  In the exhibition apparatus of the present invention, as a specific example of the exhibit position guide means (marker or the like) disposed on the upper surface of the casing, an adhesive member or an adsorbing member (Claim 3), or a magnetic material is used. (Claim 4) can be preferably employed.

  Furthermore, among the display devices of the present invention, in particular, when the imaging optical element is a micromirror array comprising a corner reflector type unit optical element, the aerial image is converted into a clear image with higher brightness. It is possible to set an ideal optical path that can be displayed and does not include the frame or casing of the device within the viewer's field of view. As a result, the video displayed on the display is displayed in conjunction with the exhibit as a more realistic spatial image with a more three-dimensional effect, and these spatial images and the exhibit can be viewed by consumers, customers, and other viewers. Can be effectively appealed to.

  Among the display apparatuses according to the present invention, the display image of the display that has an inclination angle of the display surface with respect to the lower surface of the imaging optical element of 30 ° or more and less than 90 ° (the displayed aerial image ( 3D image) can be displayed as a 3D image with a stronger floating feeling.

(A) is a perspective view explaining the structure of the exhibition apparatus in 1st Embodiment of this invention, (b) is a top view of the said exhibition apparatus. It is an external appearance perspective view which shows the state which mounted the exhibit (D) in the display apparatus of the said 1st Embodiment. It is an external appearance perspective view of the display apparatus of 2nd Embodiment of this invention. It is an external appearance perspective view of the display apparatus of 3rd Embodiment of this invention. It is an external appearance perspective view of the display apparatus of 4th Embodiment of this invention. It is an external appearance perspective view of the display apparatus of 5th Embodiment of this invention. It is an external appearance perspective view of the display apparatus of 6th Embodiment of this invention. It is an external appearance perspective view of the display apparatus of 7th Embodiment of this invention. It is an external appearance perspective view of the display apparatus of 8th Embodiment of this invention. It is sectional drawing of the principal part of the display apparatus of the said 8th Embodiment. It is an external appearance perspective view which shows the state which mounted the exhibit (F) in the exhibition apparatus of the said 8th Embodiment. It is an external appearance perspective view of the display apparatus of 9th Embodiment of this invention. It is a figure explaining the structure of the micromirror array used for each said exhibition apparatus. It is a figure explaining the projection system of the aerial image by the said micromirror array. It is a figure explaining the other structural example of the micromirror array used for the exhibition apparatus of this invention. It is a disassembled perspective view explaining the structure of the said micromirror array. It is another structural example of the micromirror array used for the display apparatus of this invention. It is the further another structural example of the micromirror array used for the exhibition apparatus of this invention. It is a figure explaining the structure of the micromirror array of another structure used for the exhibition apparatus of this invention. It is an external appearance perspective view of the conventional display apparatus.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to this embodiment.

  FIG. 1A is a perspective view illustrating the configuration of the exhibition apparatus according to the first embodiment of the present invention, and FIG. 1B is a plan view of the exhibition apparatus according to the first embodiment as viewed from above. is there. Moreover, FIG. 2 is a figure which shows the state which mounted the exhibit (D) in the exhibition apparatus of the said 1st Embodiment. In the drawing, in order to briefly explain only the main structure of the display device of the present invention, a part of a casing such as a case and a housing and a part of parts such as a wiring and an electrical component are omitted. ing. Further, a point o in each figure is the center (intersection of diagonal lines) of a substantially square imaging optical element (micromirror array 1), and X is a diagonal length (diagonal length) of the imaging optical element. , L indicates the distance between the point o (center point) and the exhibit location guidance means (marks M1, M2, etc.).

  As shown in FIG. 1A, the display apparatus according to the present embodiment includes a panel-like micromirror array imaging optical element (hereinafter referred to as “micromirror array 1” or simply “array 1”) and a flat such as an LCD. A panel display (hereinafter referred to as display 2) and a display mounting table 3 that supports the display 2 in an obliquely inclined manner below the array 1 (inside the case 10) are mainly configured. In addition, the display apparatus has a display surface 2a with respect to one surface (lower surface) of the array 1 by reflection of light by a large number of micromirrors (corner reflectors: see FIGS. 13 and 14) provided in the micromirror array 1. Is an image (image I) displayed on the display 2 arranged in a state inclined at a predetermined angle α as a space image I ′ rising obliquely in the space on the other surface (upper surface 1 a) side of the array 1. The image is formed so as to emerge.

  Then, as shown in FIG. 1 (b), the exhibition apparatus is an exhibit position that serves as a guide for the placement position of an exhibit (D indicated by a two-dot chain line) to be placed later on the upper surface 10a of the case 10. Guide means (circular marks M1, M1) are arranged, and this mark M1 has a distance L between the mark M1 and the center (point o) of the upper surface 1a of the micromirror array 1 so that the upper surface of the array. It is arranged in a region (L ≦ X) that is equal to or less than the diagonal length (diagonal length X) of 1a. This is a feature of the display device of the present invention.

  Note that the position of the mark M1 is a region excluding the upper surface 1a of the array 1 so that the exhibits (D and the like) placed thereon do not interfere with the formation of the spatial image I ′ by the micromirror array 1. Is set to In addition, although it is difficult to understand in FIG. 1A, an aggregate of points whose distance from the center (point o) of the upper surface 1a of the micromirror array 1 is “the diagonal length X of the array upper surface 1a” is It is a “circle” centered on the point o (drawn with a dot-and-dash line in the figure), and the exhibit position guide means (mark M1, etc.) is within a circle (circle x) of radius X centered on this point o. Located in.

  The configuration of the exhibition apparatus will be described in detail. As the imaging optical element used in the present embodiment (corresponding to the symbol A in the conventional example of FIG. 20), various lenses including a Fresnel lens and the afocal optical system are used. A refractive imaging element such as a micromirror or a corner reflector can be used. In particular, in the first embodiment, a micromirror array 1 (convex corner reflector array) that forms an image at a plane-symmetrical position with respect to the element plane P as shown in FIG. 13 is preferably used. The micromirror array 1 is disposed so as to be substantially horizontal with respect to the viewer's viewpoint (sense) by an arbitrary fixing member or the like.

  The micromirror array 1 (corner reflector array) will be described in more detail. As shown in FIG. 13, the micromirror array 1 has a large number of minute protrusions protruding downward on the lower surface 1b side of the substrate (substrate) 11. The square columnar unit optical elements 12 (corner reflectors) are arranged in a diagonal grid pattern (FIG. 13 is a view of the array M viewed from below).

  Each square columnar unit optical element 12 of the micromirror array 1 has a pair of (two) light reflecting surfaces (a first side surface 12a and a second side surface 12b on the side of the quadrangular column) constituting a corner reflector. Each is formed in a rectangular shape having a “ratio of the vertical length (height h) in the substrate thickness direction to the horizontal width (width w) in the substrate surface direction” [aspect ratio (h / w)] of 1.5 or more. .

  As shown in FIG. 14, each unit optical element 12 has a pair of light reflecting surfaces (first side surface 12a and second side surface 12b) constituting each corner 12c. The outer edge (outer side) is rotated by 45 ° with respect to the front of the viewer. Then, the lower image I of the micromirror array 1 is projected to a plane-symmetrical position (above the imaging optical element) with respect to the array 1 (element surface P) so that the aerial image I ′ is formed. It has become.

  In the display device of the present invention, the flat panel display (display 2) for displaying the image I is viewed on the lower surface (1b) of the micromirror array 1 as shown in FIGS. The aerial image I ′ projected through the micromirror array 1 is arranged so as to be inclined downward at a predetermined inclination angle α from the front side (front E side) to the back side of the viewer. It is designed to face the direction.

  As the display 2 used for displaying the image I, a liquid crystal display panel (LCD) having a backlight, a plasma display panel, an organic EL display panel, and the like, such as “white” with as little bias as possible over the entire visible light wavelength. A display panel that can reproduce “black” when not displayed with good contrast can be used. Further, the display D may be a display unit such as a mobile phone or a portable information terminal. Specifically, as the display D, a smartphone, a tablet PC, a digital photo frame, a portable game machine, a portable type, etc. Among book readers, PDAs, electronic dictionaries, etc., in which the display unit 2a is always exposed (not covered), the size of the display surface 2a is the size of the micromirror array 2 (the shape of the upper surface 1a). The size corresponding to can be used.

  Further, the inclination angle α of the display 2 is set to 30 ° or more and less than 90 ° (30 ° ≦ α <90 °) in consideration of the posture and distance of the viewer who uses the display device.

  Next, in the embodiment described above, as a housing for housing the display 2, in addition to the box-like case 10 shown in FIG. 2 (first embodiment), an open-type housing shown in FIG. 12 (9th embodiment) described later is used. Any shape can be used as long as there is a space for placing the exhibits (D, F, etc.) on the upper surface (top plate member) such as the housing (20).

  The case (case 10) of the first embodiment will be described in detail. As shown in FIG. 1A, the case 10 surrounds the upper surface (top plate member) 10a and the bottom surface (bottom plate member) 10b and the side surface. A mounting table 3 having a mounting surface for mounting the display 2 at a predetermined angle α with respect to the micromirror array 1 is arranged inside the four side members. .

  Further, the micromirror array 1 is fitted into the upper surface 10a in an opening provided in a substantially central portion so as to transmit light. The periphery of the array upper surface 1a in the case upper surface 10a (viewer in FIG. 1). On the E side), two marks M1 and M1 which are features of the present invention are arranged. These marks M1 and M1 are drawn on the surface of the upper surface 10a by pasting or printing. As described above, the center point (point o) of the upper surface 1a of the micromirror array 1 is used. Are arranged in a circle having a radius X (diagonal length of the array upper surface 1a) centered on [except for the portion directly above the array 1 (on the upper surface 1a). ]

  In the display apparatus having the above-described configuration, when the exhibit D is placed on the mark M1 using the position guide (guide) function of the mark M1, the original design as shown in FIG. The exhibit D can be arranged at an appropriate position. Then, in this state, a space image associated with the exhibit D is projected by projecting an image related to the exhibit D in the vicinity of the exhibit D arranged on the mark M1 (above the array upper surface 1a). I ′ can be displayed more three-dimensionally and more realistically. In addition, this makes it possible to make the exhibition in which the exhibit D and the aerial image I ′ are linked more impressive and more floating and realistic.

  In the first embodiment, an example is shown in which two exhibits (D, D) are placed on the marks M1, M1 on the viewer E side of the case upper surface 10a. The number of exhibits to be placed, the position in the circle x, and the like can be freely set as long as they do not interfere with the display of the aerial image I ′. For example, as in the second embodiment shown in FIG. 3, the exhibits D1 to D6 may be arranged so as to surround the aerial image I ′ from front, rear, left, and right (reference numerals of the marks M are omitted).

  In addition, the exhibition position guide means (circular seals and marks M1 in FIGS. 1 and 2), which serve as a guide for the placement positions of the respective exhibits, also have other shapes corresponding to the exhibits to be placed. Or a structure or the like. For example, as in the third embodiment shown in FIG. 4, the exhibit position guide means disposed on the upper surface 10a of the case may be a cross-shaped mark M2, or as other polygonal or elliptical marks. Also good. Further, when the case upper surface 10a is subjected to a pattern or painting, or a surface shape processing, the pattern or painting is applied to the part of the exhibit position guide means as in the fourth embodiment shown in FIG. Alternatively, by forming a portion that is not subjected to surface shape processing or the like (so-called “white”), this portion can be used as the mark M3.

  Further, instead of providing an exhibit position guide means at a predetermined position on the case upper surface 10a by sealing, patterning, painting, surface shape processing, etc., an adhesive member as in the fifth embodiment shown in FIG. Alternatively, the mark M4 may be formed by attaching an adsorbing member (adsorbing tape) or the like. Thereby, even after the exhibit is placed, it is possible to prevent the display item from being displaced or toppled.

  The exhibition apparatus in each of the first to fifth embodiments has a trouble that the positioning of the exhibition must be performed manually (manually) every time the exhibition position is aligned with the exhibition position guide means (each mark). However, an embodiment will now be described in which an exhibit can be placed at an appropriate position without any hassle by simply bringing the exhibit close to the exhibit position guide means.

  FIG. 7 is an external perspective view of the display device of the sixth embodiment of the present invention, and FIG. 8 is an external perspective view of the display device of the seventh embodiment of the present invention. In addition, since structures other than each exhibit position guide means arrange | positioned at the case upper surface 10a are the same as that of the said 1st-5th embodiment, the detailed description is abbreviate | omitted.

  The display device shown in FIGS. 7 and 8 is provided when the bottom surface of the exhibit placed on the case upper surface 10a is provided with a shape such as a concave portion or a convex portion that can be used for identifying and mounting the exhibit. For example, when a concave portion is provided on the bottom surface of the exhibit, as shown in FIG. 7 (sixth embodiment), the concave portion of the exhibit is engaged (fitted) at the predetermined position. A convex portion (mark M5) is provided. Further, when a convex portion is provided on the bottom surface of the exhibit, a convex portion (mark M6) that engages with the concave portion of the exhibit is provided at the predetermined position as shown in FIG. 8 (seventh embodiment). Thus, the exhibit can be naturally positioned at an appropriate position simply by fitting the concave portions and the convex portions (or the convex portions and the concave portions). These marks M5 and M6 are regions in which the distance L between the center (point o) of the upper surface 1a of the micromirror array 1 is equal to or less than the diagonal length (diagonal length X) of the array upper surface 1a. Of course, it is provided in L ≦ X, that is, within a circle of radius X centered on point o. Further, the shape of the exhibit position guide means (convex portion: mark M5, concave portion: mark M6, etc.) may be any shape such as a circle, an ellipse, or a polygon. However, the cross-sectional shape is a trapezoidal shape (conical trapezoidal shape) or a semicircle (hemispherical shape) in the above example, and the side surface (wall surface) is a slope, and the final position of the fitting is automatically determined by the weight of the exhibit. Is preferred.

  In addition, in the display device of the eighth embodiment shown in FIGS. 9 to 11, a magnetic member (iron-based metal component or the like) is attached to the bottom surface of the exhibit (F) placed on the case upper surface 10a or the like. This is utilized when it is built in, and a magnetic material such as a magnet (magnet M7) is embedded at a predetermined position on the upper surface 10a of the case 10. In addition, this magnet M7 may be arrange | positioned so that it may be visible from the surface (upper side) of the upper surface 10a, and may be embed | buried under the surface so that it may not be visible. When embedded so as not to be seen, the marks M1 to M3 by the seal or painting may be used in combination. Similarly to the above embodiments, the magnet M7 has a distance L from the center (point o) of the upper surface 1a of the micromirror array 1 regardless of whether the magnet M7 is visible from the surface. It is arranged in a region (L ≦ X, that is, in a circle with a radius X centered on the point o) that is equal to or shorter than the angular length (diagonal length X).

  In the display apparatus of the eighth embodiment (FIG. 9), if the figure F is brought close to (on the vicinity of) the magnet M7 using the position guide (guide) function of the magnet M7, as shown in FIG. The iron part Fa included in the figure F is attracted to the magnet M7 by the magnetic force, and as shown in FIG. 11, the figure F is naturally positioned at an appropriate position as designed in association with the aerial image I ′. The In this state, an image associated with the figure F is projected in the vicinity of the figure F arranged on the magnet M7 (above the upper surface 1a of the array), thereby linking with the exhibit (figure F). The aerial image I ′ can be displayed more three-dimensionally and more realistically. As a result, the exhibits of the above-mentioned exhibits and the spatial image I ′ become more impressive with a sense of floating and presence, and these spatial images and exhibits are displayed to viewers such as consumers and customers. You can appeal effectively.

  Next, a display device (9th embodiment) in which the upper surface (20a) of a housing (such as a case or housing 20) that houses the display 2 is formed in an oblique manner will be described. FIG. 12 is a perspective view showing a configuration of an exhibition apparatus according to the ninth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the structural member which has the function similar to each said embodiment, and the detailed description is abbreviate | omitted.

  As shown in FIG. 12, the display device of the ninth embodiment includes a top plate portion 20a (upper surface), a bottom plate portion 20b, a side plate portion (vertical direction) 20c, and an inclined side portion (inclined plate portion 20d). A housing 20 having no side surface (side portion) in the horizontal direction of the display (display insertion direction) is used. An imaging optical element (micromirror array 1) similar to that of the other embodiments is disposed in an opening provided on the upper surface (top plate portion 20a) of the housing 20, and an inclination located below the imaging optical element. The upper surface (inner surface) of the plate portion 20d is formed on a mounting table (display mounting surface) on which the display 2 such as an LCD is mounted.

  In addition, the top surface of the top plate portion 20a of the housing 20 is inclined toward the viewer (E side) from the front side of the device (right side in the drawing) toward the rear side of the device (left side in the drawing). It is formed on an “upward inclined surface”. That is, the top panel 20a in which the micromirror array 1 is fitted is directed to the horizontal plane of the device (the viewer's sensory horizontal plane) toward the same inclination direction (E side where the viewer is present) as the inclination of the aerial image I ′. ) With a predetermined angle β.

  Further, the display surface 2a of the display 2 on the display mounting table (inclined plate portion 20d) is arranged in a state inclined at a predetermined angle α with respect to the element surface (or the lower surface) of the micromirror array 1. The image (I) on the display 2 is formed as an aerial image I ′ at a plane symmetric with respect to the element surface of the array 1. The inclination angle of the display display surface 2a with respect to the bottom surface (bottom plate portion 20b) of the housing 20 is (α−β).

And the inclination | tilt angle (beta) with respect to the horizontal of the upper surface (top plate part 20a) of the said housing 20 is normally set to 1 degree or more and 60 degrees or less (15 degrees in this example), The angle of inclination with respect to the micromirror array 1 is not more than an angle α (30 ° to less than 90 °). That is, between the inclination angle β and the inclination angle α,
0 <β ≦ α (where 1 ° ≦ β ≦ 60 °, 30 ° ≦ α <90 °)
The relationship is established.

  According to the display apparatus having an inclined upper surface as described above, “a space image I ′ (a space image linked to the display object) suitable for appreciation” depends on the inclination direction of the upper surface of the case, the housing, or the like. Anyone can easily find the “front of the device” (front side). For this reason, it is possible to easily find out the direction and position most suitable for viewing, in which the spatial image I ′ has the most stereoscopic effect and the like, without being conscious of it. In addition, the viewing direction and position are the positions at which the floating feeling and presence of the aerial image I ′ can be most strongly felt in the exhibition apparatus.

  Further, according to the configuration of this exhibition apparatus, the depth, floating feeling, and realistic feeling of the aerial image I ′ between the aerial image I ′ that rises obliquely and the upper surface of the case, housing, etc. located on the rear surface thereof. The binocular parallax that emphasizes more easily occurs. Therefore, the contrast and clearness of the aerial image I ′ (video, image, etc.) are enhanced, and the aerial image I ′ can be viewed from a greater distance. Of course, the configuration in which the upper surface of the housing, the case or the like is an upward inclined surface toward the viewer may be applied to other embodiments.

  In addition to the micromirror array 1 having the above structure, a panel-shaped imaging optical element (A) used in the exhibition apparatus of each of the above embodiments uses a rotary blade on the surface of a flat transparent substrate. Two or one optical element (micromirror arrays B1, B2, B3, B4, see FIGS. 15 to 19) in which a plurality of linear grooves parallel to each other are formed at a predetermined interval by the dicing process that has been performed. It can also be used.

  These micromirror arrays B1, B2, B3, and B4 are superposed in a state where one of two optical elements (substrates) having a plurality of parallel grooves on the surface is rotated by 90 ° (FIGS. 15 and 16). 17 and 18), or a plurality of parallel grooves perpendicular to each other in plan view are formed on the front and back surfaces of one flat substrate (FIG. 19), so that the substrate front and back direction (up and down) Direction), one parallel groove group and the other parallel groove group intersect each other at the crossing point (intersection of the lattice) perpendicular to each other in plan view. And a corner reflector composed of the light-reflective vertical surface (wall surface) of the other parallel groove group.

  Further, the light reflecting wall surface of the parallel groove group of the one substrate and the light reflecting wall surface of the parallel groove group of the other substrate constituting the corner reflector are viewed three-dimensionally (three-dimensionally). In this case, there is a so-called “twist position” relationship. Further, since each of the parallel grooves and the light reflecting wall surface thereof are formed by dicing using a rotary blade, the aspect ratio [height (length in the substrate thickness direction) of the light reflecting surface in the corner reflector is used. ) / Width (width in the horizontal direction of the substrate)], for example, it is advantageous in that the optical performance of the optical element can be adjusted relatively easily.

  The structure of each of the above-described micromirror arrays will be described in more detail individually. The micromirror array B1 shown in FIGS. 15 and 16 has each of the optical elements (21, 21 ′) constituting the transparent flat plate-like substrate 21. , 21 ′, a plurality of linear grooves 21g or grooves 21′g parallel to each other are formed at a predetermined interval by dicing using a rotary blade.

  Then, the micromirror array B1 uses the two optical elements (substrates 21 and 21 ') having the same shape to invert the upper one substrate 21' as shown in FIG. ′ Is rotated by 90 ° (on the plane) with respect to the other substrate 21 on the lower side, the surface 21′a in which the groove 21′g is formed on the upper substrate 21 ′ is replaced with the lower substrate 21. Are brought into contact with the surface 21a on which the grooves 21g are formed, and these substrates 21, 21 'are overlapped with each other and fixed, whereby the grooves 21g and the grooves 21' provided on the substrates 21, 21 'are fixed. This is configured as a set of arrays M1 (FIG. 15) in which the continuous directions of g are orthogonal to each other in plan view.

  Similarly, in the micromirror array B2 shown in FIG. 17, the upper substrate 21 is arranged such that the continuous directions of the grooves 21g and the grooves 21′g provided on the substrates 21 and 21 ′ are orthogonal to each other in plan view. 'Is rotated with respect to the other substrate 21 on the lower side (90 ° on the horizontal plane), and the back surface (groove) of the upper substrate 21' is formed on the surface 21a where the groove 21g is formed on the lower substrate 21. 21′g is not formed), and the substrates 21 and 21 ′ are overlapped and fixed vertically so as to form a set of arrays B2.

  Further, the micromirror array B3 shown in FIG. 18 uses the two optical elements (substrates 21 and 21 ′) having the same shape and manufacturing method as described above to invert the lower one substrate 21 ′ so that the substrate is reversed. 21 'is rotated 90 ° (horizontally) with respect to the other upper substrate 21, and the back surface of the upper substrate 21 and the back surface of the lower substrate 21' are brought into contact with each other. Are stacked and fixed to form a set of arrays B3 in which the continuous directions of the grooves 21g and the grooves 21'g provided on the substrates 21 and 21 'are orthogonal to each other in plan view.

  The micromirror array B4 shown in FIG. 19 has linear grooves that are parallel to each other on the upper surface 31a and the lower back surface 31b of the transparent flat substrate 31 by dicing using a rotary blade. A plurality of grooves 31g and grooves 31g 'are formed at a predetermined interval. The grooves 31g on the front surface 31a side and the grooves 31g' on the back surface 31b side are perpendicular to each other in the direction of formation (continuous direction). It is formed to do.

  Also in the exhibition apparatus using each of the micromirror arrays B1, B2, B3, and B4, as in the exhibition apparatus using the micromirror array 1, a planar two-dimensional image I (video etc.) displayed on the display D is displayed. Can be displayed (projected) as a pseudo stereoscopic image (stereoscopic two-dimensional image, aerial image I ′) having a sense of depth. In addition, the exhibition apparatus has an advantage that the cost of the entire apparatus can be reduced because the micromirror array (B1, B2, B3, B4) to be used is inexpensive.

  In the above-described embodiments, the exhibits arranged on the upper surface of the casing (case 10, housing 20, etc.) are cuboid (columnar) objects, figures, etc., but the exhibits to be used are exemplified. For example, in addition to general products (small items), character products such as mascots, vehicles, buildings, animals and plants, astronomical objects, etc. Etc. can be used.

  The display device of the present invention is suitable for projecting related animation around a three-dimensional object such as a product or a product, and is a diorama, plastic model, solid model, garage kit, paper model, or minicar. Suitable for display and display of food, toys and figures. In addition to commercial use using characters, product models, etc., it can also be used in academic and educational fields, such as visualization of the structure of chemical substances that are difficult to express with a three-dimensional model alone.

DESCRIPTION OF SYMBOLS 1 Micro mirror array 2 Display 2a Display surface 10 Case 10a Upper surface D, F Exhibit M1 Mark I 'Spatial image o Center of imaging optical element upper surface X Diagonal length of imaging optical element upper surface L Imaging optical element upper surface Distance between center and exhibit location guide

Claims (6)

  An imaging optical element disposed in a light-transmitting manner on the upper surface of a housing that accommodates the display, and the display surface is inclined at a predetermined angle below the imaging optical element with respect to the lower surface of the imaging optical element A display arranged in a state, and the image displayed on the display surface of the display is imaged as an aerial image rising obliquely above the upper surface of the housing via the imaging optical element. The display device displays the aerial image together with the exhibit placed on the upper surface of the casing, and the display position of the exhibit is displayed in a region around the imaging optical element on the upper surface of the casing. An exhibition apparatus characterized in that an exhibition position guide means serving as a guide is provided. The exhibition apparatus according to claim 1, wherein the exhibit position guide means is arranged on the upper surface of the housing in a region other than the upper surface of the imaging optical element and at a position satisfying the following formula (1).
L ≦ X (1)
[In Formula (1), L is the distance between the center of the upper surface of the imaging optical element and the exhibit position guide means. X is the larger value of the diagonal length of the upper surface of the imaging optical element or the maximum diameter of the upper surface of the imaging optical element. ]   The exhibition apparatus according to claim 1 or 2, wherein the exhibit position guide means is an adhesive member or an adsorbent member disposed on an upper surface of the casing.   The exhibition apparatus according to claim 1 or 2, wherein the exhibit position guide means is a magnetic body embedded in an upper surface of the casing.   The display apparatus according to any one of claims 1 to 4, wherein the imaging optical element is a micromirror array including a corner reflector type unit optical element.   The display device according to any one of claims 1 to 5, wherein an inclination angle of a display surface of the display with respect to a lower surface of the imaging optical element is set to 30 ° or more and less than 90 °.

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