WO1999039322A3 - Hidden images - Google Patents

Hidden images Download PDF

Info

Publication number
WO1999039322A3
WO1999039322A3 PCT/GB1999/000315 GB9900315W WO9939322A3 WO 1999039322 A3 WO1999039322 A3 WO 1999039322A3 GB 9900315 W GB9900315 W GB 9900315W WO 9939322 A3 WO9939322 A3 WO 9939322A3
Authority
WO
WIPO (PCT)
Prior art keywords
image
hidden images
absence
incident light
visible
Prior art date
Application number
PCT/GB1999/000315
Other languages
French (fr)
Other versions
WO1999039322A2 (en
Inventor
David Browne
Original Assignee
David Browne
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
Priority claimed from GBGB9801959.9A external-priority patent/GB9801959D0/en
Priority claimed from GBGB9817409.7A external-priority patent/GB9817409D0/en
Application filed by David Browne filed Critical David Browne
Priority to AU22916/99A priority Critical patent/AU2291699A/en
Publication of WO1999039322A2 publication Critical patent/WO1999039322A2/en
Publication of WO1999039322A3 publication Critical patent/WO1999039322A3/en

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/12—Signs, boards or panels, illuminated from behind the insignia using a transparent mirror or other light reflecting surface transparent to transmitted light whereby a sign, symbol, picture or other is visible only when illuminated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/06—Designs or pictures characterised by special or unusual light effects produced by transmitted light, e.g. transparencies, imitations of glass paintings
    • B44F1/066—Designs or pictures characterised by special or unusual light effects produced by transmitted light, e.g. transparencies, imitations of glass paintings comprising at least two transparent elements, e.g. sheets, layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/08—Designs or pictures characterised by special or unusual light effects characterised by colour effects
    • B44F1/10—Changing, amusing, or secret pictures

Abstract

Means carrying an image (6, 7) comprising juxtaposed first (6) and second image (7) elements, wherein said first element (6) is capable of glowing in a manner visible in the absence of incident light, and said image (6, 7) is substantially invisible when viewed under sufficient incident light but visible in its absence.
PCT/GB1999/000315 1998-01-29 1999-01-29 Hidden images WO1999039322A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU22916/99A AU2291699A (en) 1998-01-29 1999-01-29 Hidden images

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB9801959.9A GB9801959D0 (en) 1998-01-29 1998-01-29 Hidden images
GB9801959.9 1998-01-29
GB9817409.7 1998-08-10
GBGB9817409.7A GB9817409D0 (en) 1998-08-10 1998-08-10 Hidden images

Publications (2)

Publication Number Publication Date
WO1999039322A2 WO1999039322A2 (en) 1999-08-05
WO1999039322A3 true WO1999039322A3 (en) 1999-09-30

Family

ID=26313036

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1999/000315 WO1999039322A2 (en) 1998-01-29 1999-01-29 Hidden images

Country Status (2)

Country Link
AU (1) AU2291699A (en)
WO (1) WO1999039322A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9826588D0 (en) * 1998-12-04 1999-01-27 Billam John Luminescent material and articles
US6468677B1 (en) * 2000-08-01 2002-10-22 Premark Rwp Holdings Inc. Electroluminescent high pressure laminate
DE10042275A1 (en) * 2000-08-29 2002-03-14 Willing Gmbh Dr Ing Filter coating for changing color of light reflected by long-persistence phosphorescent material has degree of spectral transmission with high transmissivity in radiated wavelength region
US7916343B2 (en) 2003-07-07 2011-03-29 Commonwealth Scientific And Industrial Research Organisation Method of encoding a latent image and article produced
US10192290B2 (en) 2012-07-23 2019-01-29 Sheri Engler Interface for revealing latent figures within images
GB201520891D0 (en) * 2015-11-26 2016-01-13 Saf T Glo Ltd Photoluminescent markers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR512354A (en) * 1914-01-21 1921-01-21 Heinrich Tschelnitz Improvements to means for making objects, such as signs, coated with phosphorescent materials phosphorescent
GB2147542A (en) * 1983-10-05 1985-05-15 Fade In Products Printed articles
FR2563776A1 (en) * 1984-05-02 1985-11-08 Jacob Jacobi Combination of a picture visible in both light and darkness and a picture visible only in darkness
US5084309A (en) * 1990-03-14 1992-01-28 Timothy J. Martin Product presenting different artistic images in the presence and absence of ambient light and fabrication method therefor
US5654552A (en) * 1995-02-22 1997-08-05 Toombs; Virginia L. Glow-in-the-dark lamp shade

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR512354A (en) * 1914-01-21 1921-01-21 Heinrich Tschelnitz Improvements to means for making objects, such as signs, coated with phosphorescent materials phosphorescent
GB2147542A (en) * 1983-10-05 1985-05-15 Fade In Products Printed articles
FR2563776A1 (en) * 1984-05-02 1985-11-08 Jacob Jacobi Combination of a picture visible in both light and darkness and a picture visible only in darkness
US5084309A (en) * 1990-03-14 1992-01-28 Timothy J. Martin Product presenting different artistic images in the presence and absence of ambient light and fabrication method therefor
US5654552A (en) * 1995-02-22 1997-08-05 Toombs; Virginia L. Glow-in-the-dark lamp shade

Also Published As

Publication number Publication date
WO1999039322A2 (en) 1999-08-05
AU2291699A (en) 1999-08-16

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121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase