基本信息:
- 专利标题： DIFFRACTIVE DEVICE PRODUCING ANGLE DEPENDENT EFFECTS
- 专利标题（中）：产生角度相关效应的衍射装置
- 申请号：PCT/AU2016/050144 申请日：2016-03-03
- 公开(公告)号：WO2016141422A1 公开(公告)日：2016-09-15
- 发明人： HARDWICK, Michael , LEE, Robert
- 申请人： INNOVIA SECURITY PTY LTD
- 申请人地址： 1-17 Potter Street Craigieburn, Victoria 3064 AU
- 专利权人： INNOVIA SECURITY PTY LTD
- 当前专利权人： INNOVIA SECURITY PTY LTD
- 当前专利权人地址： 1-17 Potter Street Craigieburn, Victoria 3064 AU
- 优先权： AU2015100282 20150306; AU2015900804 20150306
- 主分类号： G02B5/18
- IPC分类号： G02B5/18 ; B42D25/328 ; G02B5/32
摘要：
An optical device for authenticating articles of value, the optical device including: a first diffractive structure for generating a first diffractive image; a second diffractive structure for generating a second diffractive image; and a non-diffractive structure; wherein, the first and second diffractive structures, and the non-diffractive structure, are positioned relative to each other such that when viewed from a first angle, both the first and second diffractive images are visible, and when viewed from a second angle, the first diffractive image is visible while the second diffractive image is not visible. The first and/or second diffractive structures are formed on the non-diffractive structure such that when viewed from a first angle, both the first and second diffractive images are visible, and when viewed from the second angle, the first diffractive image is visible while the second diffractive structure is obscured by the non-diffractive structure.
摘要（中）：
一种用于认证物品的光学装置，所述光学装置包括：用于产生第一衍射图像的第一衍射结构; 用于产生第二衍射图像的第二衍射结构; 和非衍射结构; 其中，第一和第二衍射结构和非衍射结构相对于彼此定位，使得当从第一角度观察时，第一和第二衍射图像都是可见的，并且当从第二角度观察时， 第一衍射图像是可见的，而第二衍射图像是不可见的。 第一和/或第二衍射结构形成在非衍射结构上，使得当从第一角度观察时，第一和第二衍射图像都是可见的，并且当从第二角度观察时，第一衍射图像是可见的，而 第二衍射结构被非衍射结构遮蔽。