Gale M T, Knop K
Appl Opt. 1976 Sep 1;15(9):2189-98. doi: 10.1364/AO.15.002189.
Color-encoded focused image holograms can be reconstructed in a white light projection system to form high fidelity color images. Use of frequency encoding leads to a simple, inexpensive optical reader similar to a conventional microfiche reader. The holograms can be formed as surface-relief, phase holograms in transparent media and can be replicated by embossing into thermoplastic film. Applications include micropublishing and related fields, where they offer a considerable cost advantage over conventional color microfiche. The characteristics of color reproduction are discussed; and the hologram recording, replication, and readout are described. An optimized set of parameters is derived, which gives colorimetry comparable with that of color television and a measured screen luminous emittance of 190 lx using a standard 150-W projection lamp and x15 magnification.
彩色编码聚焦图像全息图可在白光投影系统中重建，以形成高保真彩色图像。使用频率编码可得到一种类似于传统缩微胶片阅读器的简单、廉价的光学阅读器。全息图可形成为透明介质中的表面浮雕相位全息图，并可通过压印复制到热塑性薄膜中。其应用包括微出版及相关领域，在这些领域中，与传统彩色缩微胶片相比，它们具有显著的成本优势。讨论了色彩再现的特性；并描述了全息图的记录、复制和读出。推导出一组优化参数，该参数给出的色度与彩色电视相当，使用标准150瓦投影灯和15倍放大率时，测得的屏幕发光亮度为190勒克斯。
