WO1987004287A1 - Formation d'images multiples - Google Patents

Formation d'images multiples Download PDF

Info

Publication number
WO1987004287A1
WO1987004287A1 PCT/US1987/000018 US8700018W WO8704287A1 WO 1987004287 A1 WO1987004287 A1 WO 1987004287A1 US 8700018 W US8700018 W US 8700018W WO 8704287 A1 WO8704287 A1 WO 8704287A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
lenticular
sheet
article
radiation
Prior art date
Application number
PCT/US1987/000018
Other languages
English (en)
Inventor
Richard A. Fotland
Original Assignee
Dennison Manufacturing Company
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 Dennison Manufacturing Company filed Critical Dennison Manufacturing Company
Publication of WO1987004287A1 publication Critical patent/WO1987004287A1/fr

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Classifications

    • 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
    • G09F19/14—Advertising or display means not otherwise provided for using special optical effects displaying different signs depending upon the view-point of the observer

Definitions

  • This invention relates to multiple imaging, and, more particular to imaging which produces different images from different viewing angles.
  • a lenticular screen has a number of lenses arranged in side-by-side relationship.
  • Each lens commonly termed a lenticle, may be formed by an elongated or circular convex frontal surface, and a flat rear surface.
  • the printed image is formed by two interleave pictures producing a grid or parallel lines with alternating striations.
  • the pitch, or number of picture-element pairs per unit distance, must be the same as the lens pitch of the lenticular array.
  • the focal length of each lenticles should be equal to the thickness of the lenticular sheet. Under these conditions, at one viewing angle an observer will see only one picture, while at a different angle the same observer will see the other picture.
  • the pitch of the lenticular assembly is limited to a spacing that is equivalent to 100 lenticles per inch, or less. Even with 50- 100 lenticles per inch, it is difficult to hold the registration over widths of more than a few inches. This liraitation restricts the quality of pictorial resolution, as well as size.
  • the focal length of the lenticles must equal the thickness of the lenticular sheet.
  • the focal length for a conventional plastic sheet, having refractive index of 1.5 to 1.6 is 0.016 to 0.019 inches. The result is a relatively thick sheet that not only can have objectionable bulk but also increases the final cost of the article.
  • a related object is to facilitate lenticular imaging at different viewing angles.
  • Another object of the invention is to overcome difficulties associated with the registration of picture elements in a lenticular array.
  • a related object is to simplify printing of lenticular sheets.
  • Another related object is to facilitate interaction between picture elements and a lenticular array.
  • Still another object of the invention is to improve the pictorial resolution of images associated with lenticular arrays.
  • a related object is to achieve improved quality at a substantial reduction in cost.
  • a further object of the invention is to reduce the thickness of lenticular sheets associated with multiple imaging.
  • a correlated object is to eliminate the need for thick lenticular sheets in multiple imaging.
  • the invention provides a method of forming an article with multiple images by providing a lenticular sheet and using the sheet to generate self-contained striated images.
  • the lenticular sheet is provided with an image layer desirably on a flat surface.
  • the sheet is then subjected to collimated radiation to form bands or striations in the image layer, which is advantageously formed of a radiation curable ink.
  • the image layer may be multicolored, line, half-tone, and printed by any of a variety of processes including silk- screened, gravure, flexo or planographic.
  • the lens array of the sheet focuses radiation from a source and the image layer is cured in bands or striations. The uncured areas are then dissolved or rinsed away, leaving a permanent striation pattern.
  • a second image can be printed on the image surface of the array. Where the image surface contains only one set of striated images, a particular image is seen. Where the regions without image are transparent, the interior contents of an associated package may be seen from the viewing angle associated with those regions.
  • a three-dimensional image is realized and alternate images are produced on the imaging surface of the lenticular lens array in stereoscopic pairs.
  • An eye at one position sees a first image while the other eye sees another image.
  • the combination of the two images produces a stereoscopic effect.
  • a multiple-imaged article is formed by a lenticular array with a radiation curable coating on one surface and striations in the coating produced by a collimated beam of radiation.
  • the radiation curable coating is advantageously on a flat surface of the array, and opposite the lenticles. It is desirable for the coating to be curable by ultraviolet radiation, with the uncured material rinsed to leave regions on the imaging side of the array devoid of coating.
  • the lenticular sheet, with its cured striated coating can be used in packaging such that an image is seen from one viewing angle, and the interior of the package is visible from another viewing angle.
  • Another important advantage of the invention is the attainment of higher resolution, and hence higher quality images than when registration is used.
  • Yet another advantage of the invention is cost reduction by using thinner plastic sheeting.
  • the focal length of the lenticular array and the thickness of the sheet are related.
  • the thickness of a plastic lenticular sheet can be reduced by a factor of as much as two or three.
  • Fig. 1 is a cross-sectional view of a multiple imaging article of the prior art
  • Fig. 2 is a sectional view lenticular sheet with an image coating in accordance with the invention
  • Fig. 3 is a sectional view of the sheet of Fig. 2 being irradiated
  • Fig. 4 is a sectional view of the sheet of Fig. 3 being rinsed after irradiation.
  • Fig. 5 is a resulting product in accordance with the invention.
  • Fig. 1 shows an element 1 for the viewing of different lenticular images at different viewing angles.
  • the transparent lenticular sheet array 6 of Fig. 1 has, on its side opposite the lenses, two respective coplaner images 3 and 5 in the form of stripes.
  • a viewer at position 5' will see image 5 because of the focusing action of the lenticular array 6, while a viewer at position 3' will see image 3.
  • the images 3 and 5 may be on the surface of element 1, or on the registered surface of a paper or paper board sheet, either in contact or closely spaced relative to element 1.
  • Figure 2 shows a lenticular transparent plastic sheet with a continuous image 3c formed of UV (ultra-violet) curable ink.
  • the image 3c may be multi-colored, line or half tone and printed by any of a variety of techniques, including silkscreening, gravure, flexo, or planographic offset.
  • Fig. 3 The next step in the method is illustrated in Fig. 3, where the image-containing lenticular array sheet 1 is subjected to collimated radiation from an appropriate ultraviolet lamp and reflector system 12. Due to the focusing action of the lenticular array 6, the image is only cured in bands or striations.
  • Fig. 4 the image side 8 of the lenticular sheet 1 is subjected to a spray rinse 7, which dissolves the uncured areas of the image, leaving the image in the form of striations 3.
  • Fig. 5 A final, and optional step, is illustrated in Fig. 5 where a second image 5 is printed on the imaging surface 8 of the lenticular lens array 6.
  • the images 3 and 5 may be stereoscopic pairs. In that case, one eye positioned at 3 1 would see the image 3 while the other eye positioned at 5' would see image 5.
  • the angle between the viewing position 3' and 5' would be approzimately 5 .
  • the geometry of images 3 and 5 would be adjusted to provide this viewing angle.
  • each image is printed, exposed and then cured with UV illumination at a different angle.
  • a lenticular array of half sphere lenses it is possible to generate multiple images in different directions; i.e., images which vary when the article is tipped up-and-down and side-to-side. Again, the position of the UV curing lamp defines the images seen at a particular position.
  • Example 1 A process color, half-tone image was screen printed onto the plainer surface of a 0.005 inch thick vinyl film whose opposite surface was embossed to provide a lenticular surface with a density of 400 lenticles per inch.
  • the screen print inks were of the type requiring UV curing.
  • the wet image was cured employing a mercury vapor light source operating at a power density of 200 watts per inch and housed in a cylindrical reflector with an elliptical cross-section as shown in Fig. 3.
  • the lamp was positioned at an angle of 30 to the normal. After curing, the portions of the image that were uncured were removed using a solvent wash spray.
  • a high quality image was obtained when the lenticular plate was viewed from the position where the UV lamp was located during operation. At other angles the lenticular sheet was semi-transparent.
  • Example 2 Example 1 was repeated with an additional step of printing a second process-color image over the imaging surface of the lenticular transparent plastic sheet. This image was printed using conventional printing techniques and inks. After processing was completed, two high quality images could be viewed through the sheet at different viewing angles.
  • Example 3 Example 1 was repeated and the lenticular sheet placed in a vacuum chamber where the imaging surface was vacuum metallized with aluminum. After removal from the vacuum chamber, a highly reflective surface was visible at one viewing angle while the pictorial image was observed at a different viewing angle.
  • Example 4 Stereo separation pairs were printed on a lenticular sheet.
  • the first stereo pair was printed with UV curing inks.
  • the image was cured as in Example 1 and the uncured image removed.
  • the second stereo pair was then printed also using the UV curing ink on the imaging surface of the lenticular sheet. This image was cured from the imaging side at a conventional UV curing station. A high quality three dimensional image was observed when this lenticular sheet was viewed at a distance of approximately 16".
  • Example 5 A first image was printed on a lenticular array using a UV curing ink which was subsequently cured through the lens array.
  • a well-collimated ultraviolet source was used positioned at an angle of 60 to the normal. After curing, the uncured portion of the image was rinsed away by solvent.
  • a second image was printed and subsequently cured with the UV source of an angle of 30 from normal. Again the uncured image portions were solvent rinsed.
  • a third exposure in a position normal to the plane of the lenticular array was followed by again repeating the pprroocceessss aatt aanngglleess ooff --3300o aanndd --660. The result was multiple imaging with five different images.

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  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Stereoscopic And Panoramic Photography (AREA)

Abstract

Un procédé et un article permettent d'obtenir des images différentes lorsqu'elles sont visionnées à partir d'angles différents. Le côté porteur d'images d'une feuille lenticulée reçoit une impression avec des encres durcissables sous l'effet de rayonnements et est durcie (3) avec une source collimatrice de rayonnements située dans la position de l'observateur par rapport à la surface lenticulée (6). L'encre non-durcie est éliminée de la surface imprimée, et la zone ainsi dégagée (5) de la surface porteuse d'images peut recevoir divers autres traitements. La zone dégagée peut être laissée sans impression, peut recevoir l'impression d'une image différente de la première ou une image stéréoscopique qui, associé à l'image complémentaire pré-imprimée, forme une image tridimensionnelle. La zone dégagée peut également être métallisée sous vide ou chimiquement plaquée pour former une surface très réfléchissante.
PCT/US1987/000018 1986-01-06 1987-01-06 Formation d'images multiples WO1987004287A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US816,497 1977-07-18
US81649786A 1986-01-06 1986-01-06

Publications (1)

Publication Number Publication Date
WO1987004287A1 true WO1987004287A1 (fr) 1987-07-16

Family

ID=25220793

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1987/000018 WO1987004287A1 (fr) 1986-01-06 1987-01-06 Formation d'images multiples

Country Status (3)

Country Link
EP (1) EP0258287A1 (fr)
JP (1) JPS63500127A (fr)
WO (1) WO1987004287A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0589151A1 (fr) * 1992-07-30 1994-03-30 Wilson Sporting Goods Company Aide d'alignement pour clubs de golf
EP0740282A1 (fr) * 1995-04-27 1996-10-30 Eastman Kodak Company Dispositif et méthode pour la production d'images lenticulares en mouvement
EP0569896B1 (fr) * 1992-05-11 1996-12-04 Polaroid Corporation Image tridimensionnelle
EP0778555A1 (fr) * 1995-12-06 1997-06-11 Chromium Graphics, Inc. Signe à trois dimensions
DE10135545A1 (de) * 2001-07-20 2003-02-20 Matthias Degen Anzeigesystem, insbesondere zum Einsatz in einem Stadion oder ähnlichem
US10434812B2 (en) 2014-03-27 2019-10-08 Visual Physics, Llc Optical device that produces flicker-like optical effects

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2947747T3 (es) * 2017-06-05 2023-08-17 Crane & Co Inc Un dispositivo óptico que proporciona efectos ópticos similares a parpadeos

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2815310A (en) * 1952-03-01 1957-12-03 Pictorial Prod Inc Process of assembling in the art of changeable picture display devices
FR2256423A1 (en) * 1973-12-28 1975-07-25 Pointu Pierre Light beam selector for projection screens - has mask transmitting light to series of parallel lenses
GB1413957A (en) * 1971-09-27 1975-11-12 Deep Print Projects Ltd Display devices
GB1436696A (en) * 1971-12-23 1976-05-19 Bakelite Xylonite Ltd Sheet materials
FR2397695A1 (fr) * 1977-07-11 1979-02-09 Rosenthal Bruce Dispositif optique lenticulaire presentant plusieurs images composites
FR2456625A1 (fr) * 1979-05-17 1980-12-12 Joly Patrice Procede de realisation sur un support d'une image variable en termes de couleurs et/ou de motifs suivant l'angle d'observation de l'image, et produit obtenu

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4911940A (fr) * 1972-05-04 1974-02-01

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2815310A (en) * 1952-03-01 1957-12-03 Pictorial Prod Inc Process of assembling in the art of changeable picture display devices
GB1413957A (en) * 1971-09-27 1975-11-12 Deep Print Projects Ltd Display devices
GB1436696A (en) * 1971-12-23 1976-05-19 Bakelite Xylonite Ltd Sheet materials
FR2256423A1 (en) * 1973-12-28 1975-07-25 Pointu Pierre Light beam selector for projection screens - has mask transmitting light to series of parallel lenses
FR2397695A1 (fr) * 1977-07-11 1979-02-09 Rosenthal Bruce Dispositif optique lenticulaire presentant plusieurs images composites
FR2456625A1 (fr) * 1979-05-17 1980-12-12 Joly Patrice Procede de realisation sur un support d'une image variable en termes de couleurs et/ou de motifs suivant l'angle d'observation de l'image, et produit obtenu

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569896B1 (fr) * 1992-05-11 1996-12-04 Polaroid Corporation Image tridimensionnelle
EP0589151A1 (fr) * 1992-07-30 1994-03-30 Wilson Sporting Goods Company Aide d'alignement pour clubs de golf
EP0740282A1 (fr) * 1995-04-27 1996-10-30 Eastman Kodak Company Dispositif et méthode pour la production d'images lenticulares en mouvement
US5724758A (en) * 1995-04-27 1998-03-10 Eastman Kodak Company Device and method for producing lenticular images with motion
AU698201B2 (en) * 1995-04-27 1998-10-29 Eastman Kodak Company Device and method for producing lenticular images with motion
EP0778555A1 (fr) * 1995-12-06 1997-06-11 Chromium Graphics, Inc. Signe à trois dimensions
US5716682A (en) * 1995-12-06 1998-02-10 S & G Chromium Graphics Three dimensional card
DE10135545A1 (de) * 2001-07-20 2003-02-20 Matthias Degen Anzeigesystem, insbesondere zum Einsatz in einem Stadion oder ähnlichem
US10434812B2 (en) 2014-03-27 2019-10-08 Visual Physics, Llc Optical device that produces flicker-like optical effects

Also Published As

Publication number Publication date
JPS63500127A (ja) 1988-01-14
EP0258287A1 (fr) 1988-03-09

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