Two kind of simple methods, which are termed of extenderlens amplification imaging method and convex lens amplification imaging method, are proposed based on amplification principle in this paper.
文中提出了两种利用放大原理测量全息光栅光栅常数的简单方法：扩束镜放大成像法和凸透镜放大成像法。
2
Optical fiber coupling technique is used in light sources and special optical system design is used in extenderlens to make sure of more equal facula.