KR100934886B1 - 적층 반사체, 인증 카드, 바코드 라벨, 인증 시스템, 및인증 영역 형성 시스템 - Google Patents
적층 반사체, 인증 카드, 바코드 라벨, 인증 시스템, 및인증 영역 형성 시스템 Download PDFInfo
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Abstract
Description
Claims (20)
- 관찰 파장 λ 에 대한 위상차 Δnd1 이 m×λ/4 (m 은 양의 홀수) 가 되도록 설정된 위상차 필름과,상기 위상차 필름의 배면측에 적층되는 반사 수단을 갖는 적층 반사체로서,상기 위상차 필름에 미리 소정의 인증 정보를 형성한 인증 영역을, 상기 위상차 Δnd1 과는 상이한 위상차 Δnd2 가 되도록 형성하고, 또한,상기 위상차 필름의 정면측에 광확산층을 형성한, 적층 반사체.
- 제 1 항에 있어서,상기 위상차 필름의 위상차 Δnd1 은 ±λ/16 의 오차로 제조되는, 적층 반사체.
- 제 1 항 또는 제 2 항에 있어서,상기 인증 영역에 있어서의 위상차 Δnd2 가 n×λ/4 (n 은 0 또는 양의 짝수, 단 n<m) 가 되도록 설정되어 있는, 적층 반사체
- 제 3 항에 있어서,상기 인증 영역의 위상차 Δnd2 는 ±λ/8 의 오차로 제조되는, 적층 반사체.
- 제 1 항 또는 제 2 항에 있어서,상기 인증 영역의 위상차 Δnd2 는 λ/8 이하인, 적층 반사체.
- 제 1 항 또는 제 2 항에 있어서,상기 인증 영역은 인증 정보에 대응한 가열 패턴을 갖는 스탬프를 위상차 필름에 가압시키거나, 근방에 배치시킴으로써, 위상차 필름의 배향을 열적으로 완화함으로써 형성되는, 적층 반사체.
- 제 1 항 또는 제 2 항에 있어서,상기 인증 영역은 인증 정보에 대응하여 패턴화된 광선을 위상차 필름에 노광시키거나, 광선을 위상차 필름에 대하여 주사함으로써 소정의 패턴을 노광 형성시켜, 위상차 필름의 배향을 열적으로 완화함으로써 형성되는, 적층 반사체.
- 제 6 항에 있어서,상기 인증 영역에 대한 가열 온도는 위상차 필름의 유리 전이점 이상의 온도인, 적층 반사체.
- 제 1 항 또는 제 2 항에 있어서,상기 인증 정보는 1 차원 또는 2 차원 바코드에 의해 형성되는, 적층 반사체.
- 제 1 항 또는 제 2 항에 있어서,상기 광확산층의 광확산 요소의 크기가 인증 영역에 형성되는 패턴의 크기보다 작은, 적층 반사체.
- 제 10 항에 있어서,상기 광확산 요소는 광확산층의 표면의 요철 형상과 광확산층에 분산한 입자상물 중 하나 이상이며, 그 크기는 상기 패턴 크기의 1/4 보다 작은, 적층 반사체.
- 제 1 항 또는 제 2 항에 있어서,상기 광확산층은 상기 위상차 필름의 정면측에 밀착하여 형성되는, 적층 반사체.
- 제 1 항 또는 제 2 항에 있어서,상기 광확산층은 투명한 수지와, 그것에 분산된 투명한 미립자의 혼합물에 의해 형성되는, 적층 반사체.
- 제 1 항 또는 제 2 항에 있어서,상기 반사 수단이 회절 격자에 의해 생성된 위상형 홀로그램으로 구성되는, 적층 반사체.
- 제 1 항 또는 제 2 항에 기재된 적층 반사체를 갖는, 인증 카드.
- 제 1 항 또는 제 2 항에 기재된 적층 반사체를 갖는, 바코드 라벨.
- 제 1 항 또는 제 2 항에 기재된 적층 반사체에 대하여 광을 조사하는 광원과,상기 적층 반사체로부터의 반사광을 판독하기 위한 수광부와,상기 적층 반사체와 상기 수광부 사이에 배치되는 직선 편광판을 가지고, 상기 직선 편광판의 흡수축이 상기 적층 반사체를 구성하는 위상차 필름의 광학축과는 상이한 각도가 되도록 설정되는, 인증 시스템.
- 제 17 항에 있어서,상기 각도는 45˚ 인, 인증 시스템.
- 제 17 항에 있어서,상기 수광부와 상기 적층 반사체 사이에 배치되는 핀홀 또는 슬릿과,상기 핀홀 또는 슬릿을 통하여 상기 적층 반사체에 형성되어 있는 인증 정보를 주사 하는 주사 수단을 구비하고,상기 수광부에 의해 주사된 인증 정보를 수광하도록 구성한, 인증 시스템.
- 제 1 항 또는 제 2 항에 기재된 적층 반사체에 인증 영역을 형성하기 위하여, 위상차 변화가 가능한 온도 이상으로 가열 가능한 가열 수단을 갖는, 인증 영역 형성 시스템.
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JP2005183587A JP4909535B2 (ja) | 2005-06-23 | 2005-06-23 | 積層反射体、認証カード、バーコードラベル、認証システム、及び、認証領域形成システム |
JPJP-P-2005-00183587 | 2005-06-23 |
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EP (1) | EP1900509A4 (ko) |
JP (1) | JP4909535B2 (ko) |
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WO2006137442A1 (ja) | 2006-12-28 |
CN101218090A (zh) | 2008-07-09 |
US8297522B2 (en) | 2012-10-30 |
KR20080007596A (ko) | 2008-01-22 |
CN101218090B (zh) | 2011-09-07 |
EP1900509A4 (en) | 2010-01-20 |
JP2007001130A (ja) | 2007-01-11 |
US20100123943A1 (en) | 2010-05-20 |
JP4909535B2 (ja) | 2012-04-04 |
EP1900509A1 (en) | 2008-03-19 |
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