WO2016068091A1 - 表示物 - Google Patents

表示物 Download PDF

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Publication number
WO2016068091A1
WO2016068091A1 PCT/JP2015/080141 JP2015080141W WO2016068091A1 WO 2016068091 A1 WO2016068091 A1 WO 2016068091A1 JP 2015080141 W JP2015080141 W JP 2015080141W WO 2016068091 A1 WO2016068091 A1 WO 2016068091A1
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WO
WIPO (PCT)
Prior art keywords
display
display object
light source
light
fourier transform
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2015/080141
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
知枝 佐藤
北村　満
衛藤　浩司
山内　豪
伸子 老川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to CN201580058120.XA priority Critical patent/CN107111274A/zh
Priority to US15/522,102 priority patent/US10359735B2/en
Priority to EP15854231.6A priority patent/EP3214504A4/en
Priority to EP20209665.7A priority patent/EP3800510A1/en
Publication of WO2016068091A1 publication Critical patent/WO2016068091A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
    • G03H1/024—Hologram nature or properties
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
    • G03H1/0236—Form or shape of the hologram when not registered to the substrate, e.g. trimming the hologram to alphanumerical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/0005—Adaptation of holography to specific applications
    • G03H1/0011—Adaptation of holography to specific applications for security or authentication
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/08—Synthesising holograms, i.e. holograms synthesized from objects or objects from holograms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/16—Processes or apparatus for producing holograms using Fourier transform
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2249—Holobject properties
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2286—Particular reconstruction light ; Beam properties
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
    • G03H1/30—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique discrete holograms only
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F23/00—Advertising on or in specific articles, e.g. ashtrays, letter-boxes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F23/00—Advertising on or in specific articles, e.g. ashtrays, letter-boxes
    • G09F23/02—Advertising on or in specific articles, e.g. ashtrays, letter-boxes the advertising matter being displayed by the operation of the article
    • G09F23/04—Advertising on or in specific articles, e.g. ashtrays, letter-boxes the advertising matter being displayed by the operation of the article illuminated
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/002—Table lamps, e.g. for ambient lighting
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/0005—Adaptation of holography to specific applications
    • G03H2001/0055—Adaptation of holography to specific applications in advertising or decorative art
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
    • G03H2001/0208—Individual components other than the hologram
    • G03H2001/0216—Optical components
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
    • G03H1/0276—Replicating a master hologram without interference recording
    • G03H2001/0292—Replicating a master hologram without interference recording by masking
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
    • G03H2001/2605—Arrangement of the sub-holograms, e.g. partial overlapping
    • G03H2001/261—Arrangement of the sub-holograms, e.g. partial overlapping in optical contact
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2240/00—Hologram nature or properties
    • G03H2240/20—Details of physical variations exhibited in the hologram
    • G03H2240/21—Optical density variations
    • G03H2240/22—Chromatic variations, e.g. photochromic or electrochromic
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2240/00—Hologram nature or properties
    • G03H2240/20—Details of physical variations exhibited in the hologram
    • G03H2240/40—Dynamic of the variations
    • G03H2240/43—Continuous
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2260/00—Recording materials or recording processes
    • G03H2260/14—Photoresist

Definitions

  • the present invention relates to a display object having various design properties according to the presence or absence of a point light source.
  • the present invention also relates to a security medium, a window, and a lighting fixture provided with the display object.
  • the hologram is a light-sensitive material in which two light beams (object light and reference light) having the same wavelength are caused to interfere with each other and the wavefront of the object light is recorded as interference fringes.
  • the pattern of interference fringes to be formed on the hologram is calculated based on the planned wavelength and incident direction of the reproduction illumination light and the shape and position of the image to be reproduced without using the actual object light and reference light. You may design using.
  • the hologram thus obtained is also called a computer generated hologram (CGH).
  • the Fourier transform hologram has a unique property that incident light is converted into a predetermined image by light irradiation from a point light source and is expressed as a light image, and therefore, new application development is being studied (for example, JP2007). ⁇ 011156A and JP2007-041545A).
  • the Fourier transform hologram itself is required to have high light transmittance. Therefore, when a design or the like that is different from the optical image expressed in the Fourier transform hologram and can be displayed without the need of a point light source or a laser light source is applied to the display body, it is usually printed on an area that does not overlap with the Fourier transform hologram. It is necessary to provide it. That is, on the Fourier transform hologram, only a light image expressed by light irradiation from a point light source or a laser light source can be displayed.
  • the Fourier transform hologram has poor design when it is not irradiated with light from a point light source or a laser light source.
  • the applicant of the present application has already proposed a laminate in which the embossed hologram portion and the transparent printing portion overlap each other (Japanese Patent Application No. 2013-104397).
  • this laminate when receiving light from a point light source, a light image is reproduced by the embossed hologram part. When not receiving light from a point light source, the design by the transparent printing part is displayed. The Therefore, it can be set as the hologram body which has various design properties according to the presence or absence of a point light source.
  • this laminate in order to provide two design properties, it is necessary to prepare two optical mechanisms, that is, an embossed hologram portion and a transparent printing portion, respectively.
  • An object of the present invention is to provide a display object having a variety of display properties according to the presence or absence of a point light source or a laser light source, and a security medium, a window, and a lighting fixture provided with the display object. There is.
  • the display according to the present invention is With multiple display areas, The display areas adjacent to each other are different in at least one of average hue, average brightness, and average saturation, and a first display object is formed by a combination of the plurality of display areas.
  • the at least one display area includes a Fourier transform hologram that converts light incident from a point light source or a laser light source into a second display object.
  • the Fourier transform hologram may be an amplitude hologram.
  • the number of the display areas may be three or more.
  • the security medium according to the present invention includes any of the display objects according to the present invention described above.
  • the window according to the present invention includes any of the display objects according to the present invention described above.
  • the lighting fixture according to the present invention includes any of the display objects according to the present invention described above.
  • the present invention although it has a simple configuration, it can have various design properties depending on the presence or absence of a point light source or a laser light source. Further, according to the security medium of the present invention, extremely high security can be ensured.
  • FIG. 1A is a plan view showing a display object according to an embodiment of the present invention.
  • FIG.1 (b) is a figure which expands and shows a part of one display area in the display thing of Fig.1 (a).
  • FIG.1 (c) is a figure which expands and shows a part of another display area in the display thing of Fig.1 (a).
  • FIG. 2 is a view showing a cross section taken along the line AA of the display object of FIG.
  • FIG. 3 is a diagram for explaining a display target displayed by the display object of FIG. 1A using light from a surface light source.
  • FIG. 4A is a diagram for explaining a display target displayed by the display object of FIG. 1A using light from a point light source.
  • FIG. 4B is a diagram for explaining a display target displayed by the display object of FIG. 1A using light from a laser light source.
  • FIGS. 5A to 5D are diagrams for explaining a method of creating the display object shown in FIG. 6 (a) to 6 (f) are diagrams for explaining a method of creating the display object of FIG. 1 (a).
  • FIGS. 7A to 7C are diagrams corresponding to FIGS. 1A to 1C, for explaining a modification of the display object.
  • FIG. 8 is a diagram for explaining a display target displayed by a modification of the display object in FIG. 1A under diffused light.
  • FIG. 9 is a diagram for explaining a display target displayed by a modification of the display object in FIG. 1A using light from a laser light source.
  • FIGS. 11A and 11B are diagrams illustrating an example of a window provided with the display object of FIG.
  • FIGS. 12A and 12B are diagrams showing an example of a lighting fixture provided with the display object of FIG.
  • FIG. 1A is a plan view showing a display object according to an embodiment of the present invention.
  • FIG.1 (b) is a figure which expands and shows a part of one display area in the display thing of Fig.1 (a).
  • FIG.1 (c) is a figure which expands and shows a part of another display area in the display thing of Fig.1 (a).
  • FIG. 2 is a view showing a cross section taken along the line AA of the display object of FIG.
  • the display object 10 includes a transparent substrate 11 and a plurality of (in the illustrated example) provided on the transparent substrate 11. 4) display areas 12, 13a to 13c.
  • the transparent substrate 11 is for supporting the plurality of display areas 12, 13a to 13c.
  • transparent in the transparent substrate 11 includes “semi-transparent” and means that it has transparency to the extent that light from a point light source can be transmitted.
  • the transparent substrate 11 preferably has a higher transmittance in the visible light region (hereinafter sometimes referred to as a light transmittance). Specifically, for example, the light transmittance is preferably 80% or more. Of these, 90% or more is more preferable.
  • the light transmittance refers to a value measured according to JIS K7361-1.
  • the transparent substrate 11 preferably has a lower haze value.
  • a substrate having a haze value in the range of 0.01% to 5% is preferable, with 0.01% to 3% being particularly preferable. Is preferably within the range of 0.01% to 1.5%. This is because by setting the haze value of the transparent substrate 11 within the above-described range, it is possible to display the display target in each of the display areas 12, 13a to 13c without impairing the visibility.
  • the “haze value” refers to a value measured according to JIS K7136.
  • the material of the transparent substrate 11 is not particularly limited as long as it exhibits the above light transmittance and haze value.
  • polyethylene terephthalate, polycarbonate, acrylic resin, cycloolefin resin, polyester resin, polystyrene resin, Resin films such as acrylic styrene resin, glass such as quartz glass, Pyrex (registered trademark), and synthetic quartz plate can be used.
  • the transparent substrate 11 it is preferable to use a resin film from the viewpoint of light weight and less risk of breakage and the like, and polycarbonate is most suitable from the viewpoint of birefringence.
  • the transparent base material 11 may contain a flame retardant. This is because the display object 10 according to the present embodiment can also be used in applications that require flame retardancy such as lighting equipment.
  • the flame retardant include any flame retardant such as phosphorus flame retardant, nitrogen flame retardant, metal salt flame retardant, hydroxide flame retardant, antimony flame retardant and the like, and silicone flame retardant.
  • a flame retardant can be used.
  • about the addition amount of a flame retardant what is necessary is just the quantity which the transparent base material 11 can show desired light transmittance and a haze value, and can be set suitably.
  • the transparent substrate 11 may include an ultraviolet absorber, a heat ray absorber, and the like. This is because deterioration of the display areas 12, 13a to 13c due to exposure to ultraviolet rays and heat rays is suppressed, and the display object 10 according to the present embodiment can be used as an ultraviolet absorption filter, a heat ray cut filter, or the like. .
  • the film thickness of the transparent substrate 11 may be any thickness that can provide rigidity and strength for supporting the display areas 12, 13a to 13c, and is, for example, about 0.005 mm to 5 mm. In particular, it is preferably in the range of 0.02 mm to 1 mm.
  • the shape of the transparent base material 11 is not specifically limited, According to the usage type of the display thing 10, it can select suitably.
  • the transparent substrate 11 may be subjected to, for example, corona treatment on the surface in order to improve adhesion with other layers.
  • the display areas 12, 13a to 13c may be referred to as first to fourth display areas 12, 13a to 13c.
  • the display areas adjacent to each other among the plurality of display areas 12, 13a to 13c are different from each other in at least one of the average hue, the average brightness, and the average saturation.
  • the first display object 21 is formed by a combination of the regions 12, 13a to 13c.
  • the average hue, average brightness, and average saturation in each display region 12, 13a to 13c are strictly determined for all points in the target display region using a colorimeter or spectrocolorimeter.
  • the hue, brightness, and saturation are examined and the average value is calculated.
  • the degree of variation of the objects to be investigated within a section with an area that can be expected to reflect the overall trend of the objects to be investigated (hue, lightness, and saturation). It can be specified by calculating the average value after examining the number considered appropriate.
  • 13a to 13c 30 points included in a 30 mm ⁇ 30 mm area are measured by a colorimeter or a spectrophotometer, and an average is calculated, whereby the display area 12, The average hue, average brightness, and average saturation of 13a-13c can be specified.
  • the difference between the average hue, the average brightness, or the average saturation in the display areas adjacent to each other is not limited as long as the observer can distinguish and visually recognize the display areas adjacent to each other. It can be determined accordingly.
  • the color difference ⁇ E * ab in the L * a * b * color system defined in JIS Z8781-4: 2013 can be two or more different colors.
  • a first display object 21 representing an illustration of a human face is formed by a combination of the first to fourth display areas 12 and 13a to 13c. More specifically, the first display area 12 has a circular shape, and the average hue is yellow.
  • the first display area 12 corresponds to the outline of a human face in the first display object 21.
  • the second display area 13a and the third display area 13b have a smaller circular shape than the first display area 12, and the average hue is red.
  • the second display area 13 a and the third display area 13 b are arranged side by side inside the first display area 12, and correspond to the left and right eyes of a human face in the first display object 21.
  • the fourth display area 13c has an elliptical shape, and the average hue is red.
  • the fourth display area 13c is arranged so as to extend to the left and right inside the first display area 12 and below the second display area 13a and the third display area 13b. It corresponds to the mouth of the face.
  • the content of the first display object 21 formed by the combination of the plurality of display areas 12, 13a to 13c is not particularly limited, and examples thereof include characters, symbols, marks, illustrations, characters, photographs, and the like.
  • Various character information such as a picture, a company name, a product name, a selling point, a catch phrase, and an instruction manual can be listed.
  • the number of the display areas 12, 13a to 13c is not particularly limited, but a complex design can be displayed as the first display object 21 as the number of the display areas 12, 13a to 13c increases.
  • the number of display areas 12, 13a to 13c is preferably three or more.
  • At least one display area displays light incident from a point light source in a second display. It includes Fourier transform holograms 20R and 20Y that are converted into objects.
  • the Fourier transform holograms 20R and 20Y are computer-generated holograms (CGH), which are two or more values (two-value, four-value, and eight) formed based on the image data of the original image to be displayed. This corresponds to a pattern of Fourier transform images when a plurality of Fourier transform images multi-valued to values,...) Are arranged in the vertical and horizontal directions up to a desired range.
  • CGH computer-generated holograms
  • the contents of the second display object are not particularly limited, and for example, characters, symbols, marks, illustrations, characters, pictures, etc., company names, product names, sales points, catch phrases, instruction manuals, etc. Various character information can be listed.
  • the Fourier transform holograms 20R and 20Y are transmission type amplitude holograms. That is, in the Fourier transform holograms 20R and 20Y, the light and dark intensity distribution of the interference fringes is recorded as a change in shading, and diffraction is caused by the change in light transmittance to form a reproduced image that forms the second display object. It is supposed to be.
  • a color resist material containing a photosensitive resin and a colorant can be used as the material of the Fourier transform holograms 20R and 20Y.
  • This color resist material has a light transmittance lower than the light transmittance of the transparent substrate 11, and changes in shading occur depending on the presence or absence of the color resist material on the transparent substrate 11.
  • the color resist material 11 may have zero light transmittance, that is, opaque.
  • the photosensitive resin examples include acrylic resins, polyurethane resins, polyester resins, fluorine resins, silicone resins, epoxy resins, polyolefin resins, melamine resins, vinyl chloride-vinyl acetate copolymers, and the like.
  • the colorant examples include pigments such as inorganic pigments and organic pigments, acid dyes, direct dyes, disperse dyes, oil-soluble dyes, metal-containing oil-soluble dyes, dyes such as sublimation dyes, and the like.
  • the color resist material may contain a flame retardant. This is because the display object 10 according to the present embodiment can also be used in applications that require flame retardancy such as lighting equipment. About the kind of flame retardant, it is the same as the flame retardant used with the above-mentioned transparent base material 11, and abbreviate
  • the film thickness of the display areas 12, 13a to 13c is not particularly limited, and can be, for example, about 0.1 ⁇ m to 50 ⁇ m.
  • an original image of the second display object 22 is prepared.
  • a star-shaped mark is used as the second display object 22.
  • a Fourier transform image 20 of the original picture is created by calculation such as FFT (Fast) Fourier Transform) using a computer.
  • the Fourier transform image is a binarized Fourier transform image, but may be a Fourier transform image multi-valued to a value larger than the binary value (4 values, 8 values, etc .
  • the ratio of the width of one interference fringe to the distance (pitch) between adjacent interference fringes is set to 50%, but is set smaller than 50%. May be set, or may be set larger than 50%. In applications that require light transmission, such as windows and lighting fixtures, the smaller the ratio of the width of one interference fringe to the center-to-center distance (pitch) between adjacent fringes, the greater the average brightness of the display area. ,preferable.
  • a positive color resist material 14Y containing a yellow colorant is applied on the transparent substrate 11.
  • a photomask 41 for the first display region 12 is disposed so as to face the color resist material 14 ⁇ / b> Y on the transparent substrate 11, and ultraviolet rays are passed through the photomask 41. To expose the color resist material 14Y.
  • the color resist 14Y remaining on the transparent substrate 11 is heated. To cure. Thereby, the first display area 12 including the Fourier transform hologram 20Y is formed.
  • a positive color resist material 14R containing a red colorant is applied on the transparent substrate 11.
  • the photomasks 42 for the second to fourth display regions 13a to 13c are arranged so as to face the color resist material 14R on the transparent substrate 11, and the photomasks are arranged.
  • the color resist material 14 ⁇ / b> R is exposed by irradiating ultraviolet rays through 42.
  • FIG. 3 is a diagram for explaining the first display object 21 displayed by the display object 10 using the light from the surface light source 31.
  • FIG. 4A is a diagram for explaining the second display object 22 displayed on the display object 10 using light from the point light source 32.
  • FIG. 4B is a diagram for explaining the second display object 22 displayed on the display object 10 using light from the laser light source 33.
  • the first display object 21 (with the same scale as the entire display area) can be visually recognized.
  • conversion to the second display object 22 occurs for each light emitted from each point of the surface light source.
  • the optical image of the second display object 22 is superimposed over the entire shape of the surface light source, resulting in a non-optical image. For this reason, the optical image of the second display object 22 does not appear on the display object 10, and the observer 35 cannot visually recognize the second display object 22 that is microscopic (having a smaller scale than each display area). .
  • FIG. 4A when an observer 35 observes a display object 10 that has been irradiated with light from a point light source 32 such as an LED light source, Fourier transform holograms included in one display area 12, 13a to 13c.
  • the light image of the second display object 22 is expressed on the display object 10 by the conversion of the incident light in 20R and 20Y, and the observer can visually recognize the microscopic second display object 22.
  • the Fourier transform hologram 20R included in one display region 12, 13a to 13c By the conversion of the incident light in 20Y, an optical image of the second display object 22 is developed on the irradiated surface of the transmitted light, and the observer can visually recognize the microscopic second display object 22.
  • the first display object 21 is formed by a combination of the plurality of display areas 12, 13a to 13c, and at least one display area 12, 13a to 13c Further, Fourier transform holograms 20R and 20Y for converting light incident from the point light source 32 or the laser light source 33 into the second display object 22 are included. Accordingly, the macroscopic first display object 21 is displayed in a place where the point light source 32 or the laser light source 33 is not present, but the place where the point light source 32 or the laser light source 33 is present.
  • the second microscopic display object 22 can be displayed. Thereby, although it is a simple structure, it can have various designability according to the presence or absence of the point light source 32 or the laser light source 33.
  • the hue, brightness, or saturation of the materials forming the Fourier transform holograms 20R, 20Y in the display areas adjacent to each other is different.
  • a hue, average brightness, or average brightness may differ, it is not limited to this.
  • the hue, lightness, and saturation of the materials themselves that form the Fourier transform holograms 20B and 20F are the same, but adjacent interference is caused.
  • the ratio of the width of one interference fringe to the distance (pitch) between the centers of the fringes may be different, so that the average brightness of adjacent display areas may be different.
  • the ratio of the width of one interference fringe to the distance (pitch) between the centers of adjacent interference fringes is greater than 50%.
  • the average brightness of the second to fourth display areas 13a to 13c is reduced.
  • the ratio of the width of one interference fringe to the center-to-center distance (pitch) between adjacent interference fringes is made smaller than 50%.
  • the average brightness of region 12 is increased. In this case, the hues of the display areas adjacent to each other may be the same or different.
  • a change in shading occurs depending on the presence or absence of the color resist material on the transparent substrate 11, but is not limited thereto.
  • a change in shading (change in transmittance) may occur due to a difference in concentration and thickness of the color resist material.
  • the Fourier transform holograms 20R, 20Y, 20B, and 20F are transmission holograms, but are not limited thereto, and may be reflection holograms.
  • FIG. 8 when the display object 10 is observed under diffused light such as ceiling lighting or sunlight, a macroscopic first formed by a combination of a plurality of display regions 12, 13a to 13c. The display object 21 can be visually recognized.
  • FIG. 9 when the reflected light of the display object 10 irradiated with light from the laser light source 33 is observed, the incident light in the Fourier transform holograms 20R and 20Y included in one display region 12, 13a to 13c. As a result of the conversion, a light image of the second display object 22 appears on the display object 10, and the observer can visually recognize the microscopic second display object 22.
  • FIG. 10 shows an example of the security medium 51 provided with the display object 10 of the above embodiment.
  • the security medium 51 means an information storage medium in which high security is required, and includes, for example, an ID card such as a passport or a license, a card medium such as a cash card or a credit card, and the like.
  • the security medium 51 is an ID certificate such as a passport, and includes the display object 10 according to the above embodiment.
  • the display object 10 displays a face photograph of the owner of the ID certificate as the first display object 21 and the second display object 22.
  • the observer displays the first display object 21 displayed in a combination of a plurality of display areas. It can be visually recognized.
  • the display object 10 when the display object 10 is irradiated with the laser light L from the laser light source 33, the Fourier transform hologram included in the display region converts the laser light L into the second display object 22. Therefore, the observer can visually recognize the light image of the second display object 22. Further, when the security medium 51 is arranged between a point light source such as an LED and an observer, and the point light source is observed through the display object 10 included in the security medium 51, the observer emits light from the point light source. Thus, the second display object 22 displayed on the display object 10 can be visually recognized.
  • a point light source such as an LED and an observer
  • an observer observing the security medium 51 can visually recognize the first display object 21 and the second display object 22 according to the presence or absence of a point light source or a laser light source. Therefore, the observer can prevent damage such as forgery of a face photograph by confirming the correspondence between the first display object 21 and the second display object 22, and particularly in the case of an ID certificate, Highly secure identity verification can be performed.
  • the display of the first display object 21 and the display of the second display object 22 are expressed by the same interference fringes, rewriting is difficult (for example, even if the first display object 21 is forged, 2 is not accompanied by display of the display object 22). Therefore, extremely high security can be ensured.
  • FIGS. 11A and 11B show an example of the window 52 provided with the display object 10 of the above embodiment.
  • the window 52 shown in FIGS. 11A and 11B is a stained glass and includes the display object 10 according to the above embodiment.
  • the display object 10 displays a plant pattern as the first display object 21 and displays a face illustration as the second display object 21.
  • an observer 35 who observes the window 52 from indoors during the day can visually recognize the first display object 21 displayed on the display object 10 by irradiation light from sunlight.
  • the observer 35 who observes the window 52 from the indoors at night is the second that the display object 10 displays by irradiation light from the stars by the stars functioning as point light sources.
  • the display object 22 can be visually recognized. Although illustration is omitted, when observing indoors and outdoors, the second display object 22 is visually recognized not only by stars but also by irradiation light from an outdoor point light source such as a night view, a street light, or a car light. be able to. Moreover, when observing indoors from the outdoors, the 2nd display object 22 can be visually recognized also with irradiation light from point light sources, such as LED illumination and a candle.
  • an observer observing the window 52 can visually recognize the first display object 21 and the second display object 22 according to the presence or absence of a point light source. Therefore, the observer can enjoy various designs according to the passage of time without consuming energy such as electric power.
  • FIGS. 12A and 12B show an example of a lighting fixture 53 provided with the display object 10 of the above embodiment.
  • the display object 10 is provided on the lamp shade of the lighting fixture 53, and displays a plant pattern as the first display object 21 and a star mark as the second display object 22.
  • a diffused light source (a light source having a size) such as a fluorescent lamp and a point light source such as an LED are disposed inside the lamp shade, and can be switched on by switching with each other. ing.
  • the observer can visually recognize the first display object 21 displayed on the display object 10 by the irradiation light from the diffusion light source.
  • the observer can visually recognize the first display object 21 and the second display object 22 according to the presence or absence of the point light source. Therefore, the observer can enjoy various designs at arbitrary timings by switching the switch while being the single lighting fixture 53.

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  • Credit Cards Or The Like (AREA)
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WO2019039703A1 (ko) * 2017-08-21 2019-02-28 주식회사 나노메카 위변조 방지 기구 및 위변조 방지 시스템
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CN107111274A (zh) 2017-08-29
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US20170315506A1 (en) 2017-11-02
US10359735B2 (en) 2019-07-23
JP6078941B2 (ja) 2017-02-15
EP3214504A1 (en) 2017-09-06
EP3214504A4 (en) 2018-05-23

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