Optical: systems and elements – Diffraction – From zone plate
Reexamination Certificate
2005-03-22
2005-03-22
Juba, Jr., John (Department: 2872)
Optical: systems and elements
Diffraction
From zone plate
C359S576000
Reexamination Certificate
active
06870677
ABSTRACT:
An optical element having a diffraction shape uses an optical material comprising at least N-vinylcarbazole, polyvinylcarbazole, and the light polymerization initiator. By using such optical material, it is possible to suppress crystallization of the optical material during molding even at room temperature and appropriately control the dropping amount suited for replica molding. It is possible to provide the optical material also suited for replica molding at room temperature by setting a ratio of N-vinylcarbazole to polyvinylcarbazole, i.e. N-vinylcarbazole/polyvinylcarbazole, to a range between 90/10 and 70/30.
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