TW324811B - Holographic hidden pattern anti-counterfeit method - Google Patents

Holographic hidden pattern anti-counterfeit method

Info

Publication number
TW324811B
TW324811B TW085109885A TW85109885A TW324811B TW 324811 B TW324811 B TW 324811B TW 085109885 A TW085109885 A TW 085109885A TW 85109885 A TW85109885 A TW 85109885A TW 324811 B TW324811 B TW 324811B
Authority
TW
Taiwan
Prior art keywords
holographic
pattern
hidden pattern
holographic pattern
hidden
Prior art date
Application number
TW085109885A
Other languages
Chinese (zh)
Inventor
Shenq-Lih Yeh
Shyh-Guang Lii
Jyh-Guang Hwang
Jinn-Fa Lii
Ian-Chyi Lii
Original Assignee
Ahead Optoelectronics Inc
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 Ahead Optoelectronics Inc filed Critical Ahead Optoelectronics Inc
Priority to TW085109885A priority Critical patent/TW324811B/en
Application granted granted Critical
Publication of TW324811B publication Critical patent/TW324811B/en

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Abstract

A Holographic hidden pattern anti-counterfeit method is claimed, in which on hologram (10) there are two regions recording foreground holographic pattern (11) and background holographic pattern (12). Under normal light source illumination background holographic pattern (12) looks like local image of foreground holographic pattern (11). When laser light (50) is lit to background holographic pattern (12) on hologram (10) by proper condition, there will generate first time diffraction light (60), which again lights on diffractive optical component (20), then there will generate second time diffraction light (70), which will form image of hidden pattern (80), originally invisible under normal light source, on ground glass (30) of consciously calculated position, then by decoder (40) performing hidden pattern (80) image grabbing and judging its truth.
TW085109885A 1996-08-14 1996-08-14 Holographic hidden pattern anti-counterfeit method TW324811B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW085109885A TW324811B (en) 1996-08-14 1996-08-14 Holographic hidden pattern anti-counterfeit method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW085109885A TW324811B (en) 1996-08-14 1996-08-14 Holographic hidden pattern anti-counterfeit method

Publications (1)

Publication Number Publication Date
TW324811B true TW324811B (en) 1998-01-11

Family

ID=58262113

Family Applications (1)

Application Number Title Priority Date Filing Date
TW085109885A TW324811B (en) 1996-08-14 1996-08-14 Holographic hidden pattern anti-counterfeit method

Country Status (1)

Country Link
TW (1) TW324811B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6351537B1 (en) 1998-10-05 2002-02-26 3M Innovative Properties Company Verifiable holographic article
CN106085231A (en) * 2016-05-17 2016-11-09 武汉华工图像技术开发有限公司 A kind of thermoprint aqueous mould release and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6351537B1 (en) 1998-10-05 2002-02-26 3M Innovative Properties Company Verifiable holographic article
CN106085231A (en) * 2016-05-17 2016-11-09 武汉华工图像技术开发有限公司 A kind of thermoprint aqueous mould release and preparation method thereof

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