INFORMATION-SHIELDING CARDS AND SYSTEMS AND METHODS FOR FABRICATING THE SAME

    公开(公告)号:US20240005121A1

    公开(公告)日:2024-01-04

    申请号:US18367082

    申请日:2023-09-12

    摘要: Example embodiments of information-shielding cards and systems and methods of fabricating the same are provided. An information-shielding card can comprising a substrate comprising a first layer, a second layer, a third layer, a chip embedded in the second layer, and a quick-response (QR) code formed on the second layer. The second layer can be disposed between the first layer and the third layer. The first layer can comprise a first material that is transparent when exposed to a non-visible light, the second layer can comprise a second material that is opaque when exposed to visible light and when exposed to non-visible light, and the third layer comprises a third material that is transparent when exposed to a non-visible light.

    MACHINE-READABLE OPTICAL SECURITY DEVICE

    公开(公告)号:US20230110318A1

    公开(公告)日:2023-04-13

    申请号:US18045384

    申请日:2022-10-10

    申请人: Crane & Co., Inc.

    摘要: An IR and/or UV machine-readable optical security device (e.g., micro-optic security thread) that is made up of at least one IR-absorbing component with a characteristic IR signature detectable at two or more IR-wavelengths, at least one UV-absorbing component with a characteristic UV signature detectable at two or more UV-wavelengths, at least one IR-absorbing component that absorbs IR light and emits light at a different invisible wavelength, at least one UV-absorbing component that absorbs UV light and emits light at a different invisible wavelength, or a combination thereof, is provided. The IR and UV machine-readable features do not interfere with the optical effects projected by the optical material.

    INFORMATION-SHIELDING CARDS AND SYSTEMS AND METHODS FOR FABRICATING THE SAME

    公开(公告)号:US20220414413A1

    公开(公告)日:2022-12-29

    申请号:US17362483

    申请日:2021-06-29

    摘要: Example embodiments of information-shielding cards and systems and methods of fabricating the same are provided. An information-shielding card can comprising a substrate comprising a first layer, a second layer, a third layer, a chip embedded in the second layer, and a quick-response (QR) code formed on the second layer. The second layer can be disposed between the first layer and the third layer. The first layer can comprise a first material that is transparent when exposed to a non-visible light, the second layer can comprise a second material that is opaque when exposed to visible light and when exposed to non-visible light, and the third layer comprises a third material that is transparent when exposed to a non-visible light.

    Device and method for detecting reactive luminescent nano- or micro- particles

    公开(公告)号:US20220397507A1

    公开(公告)日:2022-12-15

    申请号:US17774227

    申请日:2020-11-25

    摘要: Device for detecting reactive luminescent particles embedded in a substrate or surface having an infrared or ultraviolet illuminator; a near-infrared photodiode sensor; a dark chamber, inside which the illuminator and photodiode sensor are mounted; a logarithm amplifier; an electronic data processor configured to detect the reactive luminescent particles by carrying out the steps of: illuminating the substrate or surface with the illuminator; acquiring the amplified linearized signal captured by the photodiode sensor; detecting the presence of luminescent particles in the substrate or surface from the linearized decay of the acquired signal. A further near-infrared photodiode sensor, a further logarithm amplifier, and a differentiator for obtaining a difference between amplified signals received by each photodiode sensor can be utilized.