| 摘要 |
FIELD: holography. SUBSTANCE: light control film intercepts of diffracted zero order light and facilitates passing desired band of diffracted first order light. It includes front layer, intermediate layer and back layer. Back layer serves as base, while side shift of intermediate layer provides high quality interception of zero order light. EFFECT: production of coherent light to be used as beam for reproduction of holograms. 15 cl, 23 dwg
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