Direct Beam Reflection Hologram
直接光束反射全息图
General considerations: The beamspread should be made slightly larger than the film. The gaussian distribution of the light puts most of the light in the central two-thirds of the beam. The object should be placed close to the film. The closer to the film, the brighter they will appear in the finished hologram. The beam intensity should be about the same from the two sides of the film, so best results are obtained with reflective objects.
| Sample Procedure
样品程序 |
Basic setup of equipment
基本设备布置 |
| Further Illustrations
进一步示例 | Object and film
物体与胶片 |
Adjusting beam
调整光束 |
Beam spreader
光束扩散器 |
| Mounting laser
安装激光器 |
Mounting film
装片 |
Developing
发展 |
一般考虑：光束的发散应略大于胶片。光的高斯分布使大部分光集中在光束的中央两 thirds 部分。物体应放置在胶片附近。离胶片越近，在最终的全息图中看起来越亮。光束的强度应从胶片的两侧大致相同，因此使用反射物体可以获得最佳效果。
索引
HyperPhysics ***** 物理学 3901 ***** 全息术
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