WO1999039322A3 - Hidden images - Google Patents
Hidden images Download PDFInfo
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Endoscopes (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
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.
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 |
---|---|---|---|
GB9801959.9 | 1998-01-29 | ||
GBGB9801959.9A GB9801959D0 (en) | 1998-01-29 | 1998-01-29 | Hidden images |
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)
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 |
RU2344054C2 (en) | 2003-07-07 | 2009-01-20 | Коммонвелс Сайнтифик Энд Индастриал Рисеч Организейшен | Method of coding latent image |
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)
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 |
-
1999
- 1999-01-29 WO PCT/GB1999/000315 patent/WO1999039322A2/en active Application Filing
- 1999-01-29 AU AU22916/99A patent/AU2291699A/en not_active Abandoned
Patent Citations (5)
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 |