激光再现的物体“站立式”显示反射全息图的研究与制作

“Standing” type reflection displaying volume hologram reconstructed by laser is studied and manufactured

设计了一种记录和再现光路,实现了物体/站立0在全息图上的特殊观看效果。利用激光再现全息图的优点,针对卤化银乳胶在处理过程中的收缩特性,通过利用全息图处理工艺人为控制乳胶收缩量的方法,实现了用特定波长激光再现反射全息图的目标。设计记录波长632.8nm,再现波长532nm。针对因乳胶收缩带来Bragg条件变化,计算了角度偏移量,给出了记录和再现条件,利用两步法记录了反射全息图,实现了预期的变波长激光再现、物体"站立式"显示效果。

We design special recording/reconstructing light paths ,and accomplisha special displaying effect which seems that the reconstructed object stands on the hologram .The recording and reconstructing wavelength are 632 .8nm and 532nm .By using the shrinkage character of silver halide emulsion and considering the Bragg conditions changes due to the shrinkage of emulsion ,we calculate the angle offset value and obtain conditions of recording /constructing hologram . Finally ,we record the reflection volume hologram by two-step process .