| 摘要 |
PURPOSE: To easily produce a holographic mirror having good reproducibility by using a transparent substrate having a transparent polymer film having a mirror formed of a reflection hologram, forming the film to have about >0.01 modulation of refractive index, and exposing a specified compsn. to coherent light. CONSTITUTION: This filter consists of a transparent substrate having a transparent polymer film including a reflection hologram. The film has >0.01 refractive index modulation, and the polymer film before recording a hologram consists of about 25 to 75% polymer binder selected from copolymers such as polyvinylacetate and polyvinylbutylal and the mixture thereof, about 5 to 60% ethylene type unsatd. monomers selected from carbazol-contg. monomers and liquid monomers containing phenyl and biphenyl groups, and about 0 to 25% plasticizer, and about 0.1 to 10% photoinitiator which is activated by irradiation of active rays. Thereby, a holographic mirror having reproducibility can be obtd.
|
