178509 ⎘
Holographic processes or apparatus using light, infra-red or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto; Adaptation of holography to specific applications for security or authentication Being copy-protected against fraudulent replication, e.g. by layering a filter rejecting laser lines
ANTI-COUNTERFEITING
#2Polycarbonate-based security documents and/or documents of value with a hologram in the card body
#3Optical security device having a high refractive index layer between adjacent diffraction elements which have upper portions uncovered by the high refractive index layer
#4Hologram transfer foil, fabrication method of image display element, image display element, and personal authentication medium
#5VOLUME HOLOGRAM, MANUFACTURING METHOD THEREOF, AND SHIFT METHOD OF WAVELENGTH SPECTRUM OF DIFFRACTED LIGHT
#6Method for preparing a hologram recording medium
#7Transmission type optical element and anti-forgery volume hologram
#8Method for preparing a hologram recording medium
#9SYSTEM AND METHOD FOR PROTECTING PIRACY IN OPTICAL STORAGE
#10Hologram recording medium
#11Transmission type optical element and anti-forgery volume hologram
#12Multi-layer body with volume hologram
#13Apparatus and method for producing a hologram
#14Holographic data support and method for production thereof
#15Method for preparing a hologram recording medium