WO2018139035A1 - Rétro-réflecteur et son procédé de fabrication - Google Patents

Rétro-réflecteur et son procédé de fabrication Download PDF

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Publication number
WO2018139035A1
WO2018139035A1 PCT/JP2017/042574 JP2017042574W WO2018139035A1 WO 2018139035 A1 WO2018139035 A1 WO 2018139035A1 JP 2017042574 W JP2017042574 W JP 2017042574W WO 2018139035 A1 WO2018139035 A1 WO 2018139035A1
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WIPO (PCT)
Prior art keywords
retroreflector
triangular wave
vertical
plate
block
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Application number
PCT/JP2017/042574
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English (en)
Japanese (ja)
Inventor
誠 大坪
Original Assignee
株式会社アスカネット
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Publication date
Application filed by 株式会社アスカネット filed Critical 株式会社アスカネット
Priority to JP2018564127A priority Critical patent/JP6661799B2/ja
Publication of WO2018139035A1 publication Critical patent/WO2018139035A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors
    • G02B5/122—Reflex reflectors cube corner, trihedral or triple reflector type
    • G02B5/124—Reflex reflectors cube corner, trihedral or triple reflector type plural reflecting elements forming part of a unitary plate or sheet

Definitions

  • the present invention relates to a retroreflector in which incident light and reflected light pass through substantially the same path, and a manufacturing method thereof.
  • a retroreflector using a transparent sphere or a three-surface corner cube is applied to a traffic sign, an image projection device (see Patent Document 1) and the like because the directions of incident light and reflected light substantially coincide.
  • this retroreflector it is known that stronger reflected light can be obtained by using a three-sided corner cube than by using a transparent sphere.
  • Patent Document 2 an uneven surface having a large number of first and second inclined surfaces arranged at right angles and a right angle surface orthogonal to the first and second inclined surfaces at the same time is formed on a substrate, and A technique is disclosed in which metal deposition is performed on the concavo-convex surface to form first and second inclined reflecting surfaces and a vertical reflecting surface.
  • the retroreflector described in Patent Document 2 can obtain a strong reflection efficiency,
  • the central axis formed by the first and second inclined reflecting surfaces and the vertical reflecting surface is inclined by about 54.7 degrees with respect to the intersecting line of the first and second inclined reflecting surfaces, and thus the central axis of the incident angle. Therefore, in order to obtain a strong reflectance, it is necessary to use it at an angle, and there is a problem that the use efficiency of the retroreflector is lowered.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to provide a retroreflector that is efficient in use of the surface of the retroreflector and is relatively easy to manufacture, and a method for manufacturing the retroreflector.
  • the retroreflector according to the first invention that meets the above-mentioned object is orthogonal to the first and second inclined reflecting surfaces, and the first and second inclined reflecting surfaces arranged side by side in a triangular wave shape,
  • a retroreflecting portion made of a transparent material having a vertical reflecting surface provided at a predetermined interval, and a triangle that covers the first and second inclined reflecting surfaces and bends light from the outside to the vertical reflecting surface side. And a prism portion.
  • a retroreflector according to a second invention is the retroreflector according to the first invention, wherein a high refractive index material having a refractive index of 1.5 or more is used as the material of the retroreflector.
  • the second inclined reflection surface and the vertical reflection surface are formed using total reflection.
  • a retroreflector according to a third invention is the retroreflector according to the first invention, wherein the first and second inclined reflecting surfaces and the vertical reflecting surface are formed using specular reflection. .
  • a retroreflector manufacturing method is a retroreflector manufacturing method according to the second invention, Transparent having the triangular prism portion arranged side by side on the front side, a triangular wave portion on which the first and second inclined reflection surfaces are formed, and a lateral groove on the back side in which the vertical reflection surface is formed across the triangular wave portion It has the process of manufacturing the molding base material which consists of resin by injection molding or press molding.
  • a method for producing a retroreflector according to a fifth invention is a method for producing a retroreflector according to the first or third invention, Transparent having the triangular prism portion arranged side by side on the front side, a triangular wave portion on which the first and second inclined reflection surfaces are formed, and a lateral groove on the back side in which the vertical reflection surface is formed across the triangular wave portion
  • a method for producing a retroreflector according to a sixth invention is a method for producing a retroreflector according to the second invention,
  • the triangular prism portion arranged side by side is on the front side, the first plate made of transparent resin connecting the triangular prism portion is formed on the back side, and the second plate shape made of transparent resin.
  • a method for manufacturing a retroreflector according to a seventh invention is a method for manufacturing the retroreflector according to the first or third invention,
  • the triangular prism portion arranged side by side is on the front side, the first plate made of transparent resin connecting the triangular prism portion is formed on the back side, and the second plate shape made of transparent resin.
  • a second block having a triangular wave part on the front side, a triangular wave part on which the first and second inclined reflective surfaces are formed, and a lateral groove on the back side in which the vertical reflective surface is formed across the triangular wave part,
  • a first step of manufacturing by injection molding or press molding A second step of integrally connecting the first block and the second block via the first plate-like portion and the second plate-like portion; After the first step or the second step, a metal film is formed on the back side of the second block by metal vapor deposition or sputtering to form the first and second inclined reflection surfaces and the vertical reflection surface.
  • a retroreflector manufacturing method according to an eighth invention is the retroreflector manufacturing method according to the sixth or seventh invention, wherein the first plate-like portion and the second plate-like portion include Alignment means for performing alignment at the time of connection is provided.
  • a method for manufacturing a retroreflector according to a ninth invention is the method for manufacturing a retroreflector according to the fifth or seventh invention, wherein the first and second inclined reflecting surfaces are provided on the triangular wave portion, and After forming the vertical reflection surface in the lateral groove, resin is filled into the hollow portion of the triangular wave portion and the lateral groove.
  • the retroreflector according to the present invention has a triangular prism portion that covers the first and second inclined reflecting surfaces and bends the light from the outside to the vertical reflecting surface side.
  • the optical axis on the side is positioned closer to the side perpendicular to the surface of the retroreflector, and the use efficiency of the retroreflector with respect to the light receiving surface is increased.
  • the method of manufacturing a retroreflector according to the present invention includes a triangular prism portion arranged side by side, a triangular wave portion on which first and second inclined reflecting surfaces are formed, and a lateral groove on which a vertical reflecting surface is formed (that is, Since the molding base material or the first and second blocks are manufactured by injection molding or press molding, the manufacturing is facilitated and mass production can be performed at low cost.
  • (A), (B) is a partial front sectional view and a partial side sectional view, respectively, of the retroreflector according to the first embodiment of the present invention. It is a detailed view of the retroreflector.
  • (A) and (B) are a partial front sectional view and a partial side sectional view, respectively, of a retroreflector according to a second embodiment of the present invention.
  • the retroreflector 10 according to the first embodiment of the present invention is entirely made of a transparent material (material), and the retroreflector 11 and The triangular prism portion 12 covering the retroreflecting portion 11 receives light from the front surface and performs retroreflecting to obtain a reflected light stronger than the conventional one, which is relatively easy to manufacture.
  • R1 to R5 in FIG. 1 indicate light paths from incident light L1 to reflection. This will be described in detail below.
  • the retroreflective portion 11 includes a triangular wave portion 15 formed with first and second inclined reflective surfaces 13 and 14 in which respective surfaces are orthogonally arranged in a triangular wave shape, and the triangular wave portion 15 is crossed at a predetermined interval. It has a plurality of lateral grooves 17 in which a vertical reflection surface 16 orthogonal to the first and second inclined reflection surfaces 13 and 14 is formed (perpendicular in a plan view).
  • the triangular prism portion 12 covers the retroreflecting portion 11 across the first and second inclined reflecting surfaces 13 and 14 (perpendicularly in plan view) and bends light from the outside to the vertical reflecting surface 16 side. Is.
  • the transparent materials (materials) constituting the retroreflecting portion 11 and the triangular prism portion 12 are inseparable from each other (inseparable) to form a molded base material.
  • the molding base material has a triangular prism portion 12 on the front side and a triangular wave portion 15 and a lateral groove 17 on the back side.
  • transparent material thermoplastic or thermosetting transparent plastic (transparent resin) can be used, but glass, other transparent materials (for example, ceramic), and the like can also be used.
  • transparent plastic is used for the transparent material, the molding base material is integrally formed by injection molding or press molding.
  • the triangular prism portion 12 is made of a material that is difficult to mold, such as ceramic or thermosetting plastic, the triangular prism portion and the retroreflective portion may be formed separately.
  • a minute flat portion 12 a (not shown) on the top of the triangular prism portion 12.
  • the width of the microplanar portion 12a is preferably about 0.002 to 0.1 of the pitch of the triangular prism 12.
  • the triangular wave portion 15 forming the retroreflective portion 11 has first and second inclined surfaces 18 and 19 arranged in a right angle with a cross section being a right isosceles triangle shape.
  • the second inclined surfaces 19 are alternately and continuously formed.
  • the roughness Ra of the back surface (cavity side) of the first and second inclined surfaces 18 and 19 is, for example, about 10 to 100 nm, and a metal film is formed on the back surface to provide the first and second inclined reflections.
  • Surfaces 13 and 14 are formed, respectively.
  • the lateral groove 17 forming the retroreflective portion 11 has a trapezoidal cross section and has a vertically arranged vertical surface 20 whose inner width is widened downward (in the direction opposite to the triangular prism portion 12). ing. This facilitates molding with a mold.
  • the lateral groove 17 may have a shape (triangular cross section) whose cross section has an acute angle ⁇ and whose inner width is widened downward.
  • the roughness Ra of the back surface of the vertical surface 20 is, for example, about 10 to 100 nm, and a metal film is formed on the back surface to form the vertical reflecting surface 16.
  • the maximum width P1 of the widened lateral groove 17 is preferably 0.1 to 0.5 times the pitch P2 of the lateral groove 17, for example.
  • the depth D1 of the lateral groove 17 is 0.5 to 2 times (more preferably) the depth D2 of the trough (referred to as “cavity portion 21”) formed by the first and second inclined surfaces 18 and 19. Is preferably 0.9 to 1.5 times.
  • the width W of the first and second inclined surfaces 18 and 19 is preferably 0.5 to 3 times the pitch P2 of the lateral grooves 17.
  • the first and second inclined reflecting surfaces 13 and 14 are made of a metal having high reflectivity (for example, Ag (silver), Al (aluminum), Ni (nickel), Ti (titanium), Cr (chromium), etc. ) Is formed on the back surface of the triangular wave portion 15 (first and second inclined surfaces 18 and 19) by a metal film (metal light reflecting surface) formed by vapor deposition or sputtering.
  • a metal film metal light reflecting surface
  • the vertical reflection surface 16 is also formed of a metal film formed by vapor deposition or sputtering of a metal having a high reflectance on the inner surface of the lateral groove 17 (vertical surface 20).
  • the groove inclined surface 22 facing the vertical surface 20 is preferably non-reflective surface treatment (for example, satin finish) so as not to act as a reflective surface.
  • the vertical reflecting surface 16 formed of this metal film is also thickened for convenience of explanation in FIGS. 1 (A) and 1 (B). It is shown.
  • the first and second inclined reflecting surfaces 13 and 14 and the vertical reflecting surface 16 are formed by using the specular reflection by the metal film, but use the total reflection (the incident light is not transmitted). (That is, the above-mentioned metal film is not used).
  • a high refractive index material having a refractive index of 1.5 or more is used as a material for the retroreflector (retroreflective portion).
  • the upper limit of the refractive index is not particularly limited as long as it is 1.5 or more. For example, it is about 2, but a ceramic having a higher refractive index can be used.
  • high refractive index material having a refractive index of 1.5 or more examples include high refractive index polymer in which a high refractive index substituent is introduced in the molecule and high refractive index in which high refractive index nanoparticles are introduced into the polymer matrix. There is a rate nanocomposite.
  • High refractive index polymers include those into which a sulfur-containing substituent, a phosphorus atom-containing group, or the like is introduced.
  • High refractive index nanocomposites include, for example, those using polyimide as a polymer matrix and TiO 2 , ZrO 2 , amorphous silicon, PbS, ZnS, etc. as nanoparticles.
  • the cavities 21 and the lateral grooves 17 of the triangular wave portion 15 are filled with the resins 23 and 24. Thereby, the strength of the retroreflector 10 is improved.
  • a material having a high refractive index is used for the retroreflective portion 11 and the first and second inclined reflective surfaces 13 and 14 and the vertical reflective surface 16 are formed using total reflection, the hollow portion of the triangular wave portion 15 is formed. 21 and the lateral groove 17 are not normally filled with resin.
  • the retroreflective portion 11 includes the first and second inclined reflecting surfaces 13 and 14 arranged in a triangular wave shape, and the vertical reflecting surface 16 with respect to the first and second inclined reflecting surfaces 13 and 14. Are provided at predetermined intervals.
  • the triangular prism portion 12 has a triangular cross section and has an inclined surface 25 and a vertical surface 26 arranged in an acute angle, and the arrangement pitch thereof is matched to the pitch P2 of the lateral grooves 17. Since the triangular prism portion 12 bends light from the outside toward the vertical reflecting surface 16, the shape of the triangular prism portion (for example, the angle of the inclined surface or the height of the vertical surface) can be obtained.
  • the arrangement pitch can be variously changed. For example, as shown in FIG.
  • a molding base material made of a transparent resin having a triangular prism portion 12 arranged side by side on the front side and a triangular wave portion 15 and a lateral groove 17 formed across the triangular wave portion 15 on the back side is formed by injection molding or pressing. Manufactured by molding.
  • thermoplastic transparent resin transparent plastic
  • thermosetting transparent resin transparent plastic
  • Demolding is easy because the shape of the adjacent triangular prism portion 12 is reduced in the drawing direction, and the triangular wave portion 15 and the lateral groove 17 are also reduced in the drawing direction.
  • the material selection of the mold such as plating the resin contact surface of the mold
  • the injection position of the resin into the mold It is preferable to set the structure (cooling structure or the like).
  • a metal film is formed on the back side of the molded base material.
  • the metal film is formed by vapor deposition or sputtering of a metal having high reflectivity such as Ag, Al, Ni, Ti, or Cr.
  • a metal having high reflectivity such as Ag, Al, Ni, Ti, or Cr.
  • the metal film is formed on the back side of the molded base material.
  • the thickness of the metal film is the thickest at the top of the triangular wave portion 15 and gradually decreases toward the skirt. For this reason, there is a possibility that the light reflected by the formed first and second inclined reflecting surfaces may deviate from the originally intended direction.
  • the metal film is formed along the back surface of the triangular wave portion 15. For this reason, the light reflected by the formed first and second inclined reflecting surfaces is reflected in the intended direction.
  • the hollow portions 21 and the lateral grooves 17 of the triangular wave portion 15 are filled with resins 23 and 24 and cured. Thereby, the retroreflector 10 which improved the intensity
  • the first and second inclined reflecting surfaces 13 and 14 and the vertical reflecting surface 16 described above are formed using specular reflection by a metal film, but use total reflection (incident light is not transmitted). In this case, only the first step described above may be performed (the second step need not be performed).
  • the first and second inclined reflecting surfaces 13 and 14 and the vertical reflecting surface 16 are formed using a mirror surface made of a metal film, the bottom (lower) uneven portion may be filled with a transparent or opaque resin.
  • the 1st, 2nd inclined reflective surfaces 13 and 14 and the vertical reflective surface 16 are formed using total reflection, the uneven
  • the retroreflector 10 having such a configuration enters the incident light L1 at the R1 position of the inclined surface 25 of the triangular prism portion 12, refracts it toward the vertical reflecting surface 16, and reflects it at the R2 position of the vertical reflecting surface 16. Then, the light is reflected at the R3 position of the first inclined reflecting surface 13, reflected at the R4 position of the second inclined reflecting surface 14, and emitted from the R5 position of the inclined surface 25 of the triangular prism portion 12. Thereby, the incident light L1 and the emitted light L3 become parallel, and retroreflection is performed.
  • the retroreflector 30 according to the second embodiment of the present invention will be described with reference to FIGS. 3A and 3B.
  • the recursion according to the first embodiment of the present invention described above will be described.
  • the same members as those of the reflective reflector 10 are denoted by the same reference numerals, and detailed description thereof is omitted.
  • the retroreflector 30 is obtained by individually manufacturing the retroreflecting portion 11 and the triangular prism portion 12 covering the retroreflecting portion 11.
  • the lateral groove 17 of the retroreflector 10 according to the first embodiment is formed to protrude upward from the triangular wave portion 15, the retroreflector 30 according to the second embodiment has a depth of the lateral groove 17. It is made to correspond to the height of the triangular wave part 15.
  • the triangular prism portion 12 is arranged side by side on the front side of the first block 31, and a first plate-like portion 32 that connects the plurality of triangular prism portions 12 is formed on the back side of the first block 31.
  • the triangular wave portion 15 and the lateral groove 17 forming the retroreflecting portion 11 are provided on the back side of the second block 33, and the second plate-like portion 34 is provided on the front side of the second block 33.
  • the first and second blocks 31 and 33 that is, the triangular prism portion 12, the triangular wave portion 15 and the lateral groove 17, and the first and second plate-like portions 32 and 34
  • the transparent material Transparent resin
  • the first and second plate-like parts 32 and 34 are provided with an alignment means 35 for performing alignment when connected.
  • This alignment means 35 is comprised by the protruding item
  • the ridge portion 36 is provided on the back side of the first block 31 in a state of protruding from the first plate portion 32, and the groove portion 37 is formed in the second block 33 (second plate portion 34. ) Is provided on the front side, but may be provided in reverse. If the first plate-like portion and the second plate-like portion can be aligned, the configuration of the alignment means can be variously changed.
  • the first block 31 and the second block 33 are connected together via the first plate-like portion 32 and the second plate-like portion 34 without causing any displacement (inside the groove portion 37).
  • the projecting ridges 36 can be inserted into the rear reflector 30, and the retroreflector 30 can be formed.
  • the 1st block 31 is mounted on the 2nd block 33, ie, 1st Even when the pitch of the triangular prism portion of the block and the pitch of the vertical reflecting surface of the second block do not coincide with each other, they can be combined to function as a retroreflector (the same applies to other embodiments).
  • FIGS. 3A and 3B a method for manufacturing the retroreflector 30 according to the second embodiment of the present invention will be described with reference to FIGS. 3A and 3B. Since it is substantially the same as the manufacturing method of the body 10, it will be briefly described below.
  • first block 31 and the second block 33 are manufactured.
  • the first block 31 and the second block 33 are individually manufactured without being manufactured integrally.
  • the first and second blocks 31 and 33 can be made by injection molding or press molding, respectively, but can be purchased and used in advance.
  • the first block 31 and the second block 33 are integrally connected through the first plate-like portion 32 and the second plate-like portion 34 (the protruding portion 36 is inserted into the groove portion 37).
  • a transparent resin is provided on one or both of the back surface of the first plate portion 32 and the front surface of the second plate portion 34. Or an adhesive. Thereby, the 1st block 31 and the 2nd block 33 are united.
  • a metal film is formed on the back surface side of the second block 33 by vapor-depositing or sputtering the above-described metal having high reflectivity.
  • the first and second inclined reflecting surfaces 13 and 14 can be formed on the first and second inclined surfaces 18 and 19 of the triangular wave portion 15, and the vertical reflecting surface 16 can be formed on the vertical surface 20 of the lateral groove 17.
  • the metal film is formed after connecting the first block 31 and the second block 33 (after the second step), but the first block 31 and the second block 33 are connected. It may be carried out before (after the first step and before the second step). In this case, the first block 31 is connected to the second block 33 in which the first and second inclined reflecting surfaces 13 and 14 and the vertical reflecting surface 16 are formed.
  • the hollow portions 21 and the lateral grooves 17 of the triangular wave portion 15 are filled with resins 23 and 24 and cured.
  • the first and second inclined reflecting surfaces 13 and 14 and the vertical reflecting surface 16 described above are formed using specular reflection by a metal film, but use total reflection (incident light is not transmitted). In this case, only the first step and the second step described above may be performed (the third step is not necessary).
  • the first plate-like portion 32 and the second plate-like portion 34 are aligned, but the first plate-like portion 32 and the second plate-like portion 34 are aligned. Is not an essential requirement.
  • the present invention is applied even when the pitch of the triangular prism portion 12 and the pitch of the vertical reflecting surface 16 of the retroreflecting portion 11 are different.
  • the triangular prism portion 12 and the first and second inclined reflecting surfaces 13 and 14 are preferably substantially orthogonal.
  • the present invention has been described with reference to the embodiments. However, the present invention is not limited to the configurations described in the above-described embodiments, and is within the scope of the matters described in the claims. Other possible embodiments and modifications are also included.
  • the case where the retroreflector of the present invention and the manufacturing method thereof are configured by combining some or all of the above-described embodiments and modifications are also included in the scope of the right of the present invention.
  • the case where a resin having the same configuration as the molding base material is used as the resin filled in the hollow portion of the triangular wave portion and the lateral groove, but a different resin may be used.
  • the molded base material can be made of a normal resin, and a resin that causes total reflection can be used for the hollow portion of the triangular wave portion and the resin filled in the lateral groove.
  • the retroreflector according to the present invention has a triangular prism portion that covers the first and second inclined reflecting surfaces and bends the light from the outside to the vertical reflecting surface side.
  • the optical axis on the side is positioned closer to the side perpendicular to the surface of the retroreflector, the use efficiency of the retroreflector with respect to the light receiving surface is increased, and the retroreflector can be easily installed.
  • the method of manufacturing a retroreflector according to the present invention includes a triangular prism portion arranged side by side, a triangular wave portion on which first and second inclined reflecting surfaces are formed, and a lateral groove on which a vertical reflecting surface is formed (that is, ,
  • the molding base material or the first and second blocks) can be manufactured by injection molding or press molding, and can be mass-produced at low cost.
  • Retroreflector 11: Retroreflective part, 12: Triangular prism part, 12a: Minute plane part, 13: First inclined reflecting surface, 14: Second inclined reflecting surface, 15: Triangular wave part, 16: Vertical reflection surface, 17: lateral groove, 18: first inclined surface, 19: second inclined surface, 20: vertical surface, 21: hollow portion, 22: groove inclined surface, 23, 24: resin, 25: inclined surface , 26: vertical plane, 30: retroreflector, 31: first block, 32: first plate-like portion, 33: second block, 34: second plate-like portion, 35: alignment means , 36: ridge, 37: groove

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
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Abstract

La présente invention concerne un rétro-réflecteur (10) qui présente : une partie de rétro-réflexion (11) qui comprend un matériau transparent et possède des première et seconde surfaces de réflexion inclinées (13, 14), qui sont agencées sous la forme d'une onde triangulaire, et des surfaces de réflexion verticale (16), qui sont orthogonales aux première et seconde surfaces de réflexion inclinées (13, 14) et disposées à des intervalles prescrits ; des parties de prisme triangulaire (12), qui s'étendent latéralement sur les première et seconde surfaces de réflexion inclinées (13, 14) et qui font passer la lumière de la courbure externe vers les surfaces de réflexion verticale (16). Un procédé de fabrication de rétro-réflecteur comprend une étape dans laquelle un moulage par injection ou un moulage par compression est utilisé pour produire un matériau parent moulé qui comprend une résine transparente et qui possède des parties de prisme triangulaire (12) dans un côté supérieur et, dans un côté arrière : une partie d'onde triangulaire (15) qui forme des première et seconde surfaces de réflexion inclinées (13, 14) ; des rainures latérales (17) qui coupent la partie d'onde triangulaire (15) et qui forment des surfaces de réflexion verticale (16).
PCT/JP2017/042574 2017-01-27 2017-11-28 Rétro-réflecteur et son procédé de fabrication WO2018139035A1 (fr)

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JP2018564127A JP6661799B2 (ja) 2017-01-27 2017-11-28 再帰性反射体及びその製造方法

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JP2017-013335 2017-01-27

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022118752A1 (fr) * 2020-12-04 2022-06-09 マクセル株式会社 Dispositif d'affichage d'image flottant dans l'espace et dispositif source de lumière
JP7117473B1 (ja) * 2021-07-26 2022-08-12 株式会社アスカネット 空中像結像装置の製造方法
WO2022185927A1 (fr) * 2021-03-05 2022-09-09 マクセル株式会社 Dispositif d'affichage d'image à flottement spatial
WO2022209721A1 (fr) * 2021-03-31 2022-10-06 マクセル株式会社 Dispositif d'affichage d'image flottant dans l'espace
WO2022209722A1 (fr) * 2021-03-31 2022-10-06 マクセル株式会社 Appareil d'affichage d'image flottante spatiale
WO2023007816A1 (fr) * 2021-07-26 2023-02-02 株式会社アスカネット Procédé de fabrication d'un dispositif de formation d'image aérienne, et dispositif de formation d'image aérienne

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US20070071932A1 (en) * 2005-09-26 2007-03-29 Kejian Huang Retroreflective sheeting
US20080231976A1 (en) * 2005-03-10 2008-09-25 De La Rue International Limited Security Device Based on Customized Microprism Film
JP2011511303A (ja) * 2007-12-21 2011-04-07 キム，ヒョンシク 再帰反射体
WO2015198499A1 (fr) * 2014-06-27 2015-12-30 株式会社アスカネット Dispositif catadioptrique et procédé et dispositif d'affichage d'image stéréoscopique l'utilisant
JP2016057346A (ja) * 2014-09-05 2016-04-21 株式会社アスカネット 再帰性反射体及びその製造方法

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Publication number Priority date Publication date Assignee Title
JP2986161B2 (ja) * 1988-05-20 1999-12-06 ミネソタ マイニング アンド マニユフアクチユアリング カンパニー 高能率キューブ・コーナー再帰反射性材料
US20080231976A1 (en) * 2005-03-10 2008-09-25 De La Rue International Limited Security Device Based on Customized Microprism Film
US20070071932A1 (en) * 2005-09-26 2007-03-29 Kejian Huang Retroreflective sheeting
JP2011511303A (ja) * 2007-12-21 2011-04-07 キム，ヒョンシク 再帰反射体
WO2015198499A1 (fr) * 2014-06-27 2015-12-30 株式会社アスカネット Dispositif catadioptrique et procédé et dispositif d'affichage d'image stéréoscopique l'utilisant
JP2016057346A (ja) * 2014-09-05 2016-04-21 株式会社アスカネット 再帰性反射体及びその製造方法

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WO2022185927A1 (fr) * 2021-03-05 2022-09-09 マクセル株式会社 Dispositif d'affichage d'image à flottement spatial
WO2022209721A1 (fr) * 2021-03-31 2022-10-06 マクセル株式会社 Dispositif d'affichage d'image flottant dans l'espace
WO2022209722A1 (fr) * 2021-03-31 2022-10-06 マクセル株式会社 Appareil d'affichage d'image flottante spatiale
JP7481289B2 (ja) 2021-03-31 2024-05-10 マクセル株式会社 空間浮遊映像表示装置
JP7117473B1 (ja) * 2021-07-26 2022-08-12 株式会社アスカネット 空中像結像装置の製造方法
WO2023007816A1 (fr) * 2021-07-26 2023-02-02 株式会社アスカネット Procédé de fabrication d'un dispositif de formation d'image aérienne, et dispositif de formation d'image aérienne
TWI808809B (zh) * 2021-07-26 2023-07-11 日商亞斯卡奈特股份有限公司 空中影像成像裝置之製造方法及空中影像成像裝置

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