178622 ⎘
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; Processes or apparatus for producing holograms; Copying holograms by holographic, i.e. optical means with modification of the nature of the hologram, e.g. changing from volume to surface relief or from reflection to transmission
Method for Holographic Mastering and Replication
#2OPTICAL DEVICES FOR AUTHENTICATION AND METHODS OF MAKING SAME
#3Method for holographic mastering and replication
#4Method and master for producing a volume hologram
#5Holographic-stereogram-forming apparatus, diffusing member, and holographic-stereogram-forming method
#6Security element and method for producing a security element
#7Hybrid reflection hologram
#8Hybrid reflection hologram
#9Wide angle hologram device illuminated with a near field source and method for manufacturing same
#10Duplicating Holograms
#11Bragg Grating Elements For Optical Devices
#12Volume hologram comprising expansion agent layer or contraction agent layer for creating color patterns
#13Security element and method for producing a security element
#14Method for producing counterfeit-proof confidential and valuable documents
#15Hologram and its holographic process
#16Multi-layer body with volume hologram
#17HYBRID REFLECTION HOLOGRAM
#18Three-dimensional hologram process with overt anti-counterfeit security using first object light, second object light, and reference light
#19Method and apparatus for forming a surface-relief hologram mask