美國
US 12,697,832 B2
Optical security device
US 12,697,832 B2 是美國專利商標局（USPTO）的核准專利，日期 2026-08-04。申請人：IQ STRUCTURES S.R.O.。PDF 可在本頁下載，未登入每天最多 5 篇。
- 申請人
- IQ STRUCTURES S.R.O.
- 發明人
- Marek Skeren; Zbynek Ryzi; Roman Nahalka
- 公開日
- 2026-08-04
- 申請日
- 2021-04-09
- 文件種類
- B2 核准公告
- 也寫作
- US 12,697,832 B2 · US12697832 · 12697832
摘要
An security device comprises a recorded representation of an optically variable image which is reconstructable and viewable for a security purpose, and comprises: an optical structure having recorded therein a representation of the optically variable image in the form of a plurality of discrete portions of the complete image to be reconstructed, wherein the plurality of image portions can, when reconstructed, only be viewed in their totality by viewing the image at or over a plurality of different viewing angles or angle ranges relative to the optical structure and/or at or over a plurality of…
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專利局網站： 美國專利商標局（USPTO）