什么是离轴抛物线

抛物面反射镜是在使用非球面反射镜光学仪器Z常见的类型。 They are free from spherical aberrations， and thus focus the parallel beam to a point or point source to infinity.他们可以自由从球面像差，从而平行束聚焦到一个点或面源到无穷大。

In many optical systems it is not necessary to use aperture that is completely rotationally symmetric.在许多光学系统中，没有必要使用光圈，这完全是旋转对称的。 On the other hand， in some applications the central part of the mirror obscures the beam path and therefore is a disaster.另一方面，在某些应用中的镜子的ZX部分掩盖了光路，因此是一场灾难。 For such systems， off-axis mirrors offer many advantages versus the traditional paraboloids.对于此类系统，离轴镜相对于传统的抛物面提供许多优势。

Main applications of off-axis parabolic mirrors are as follows: 抛物面反射镜主要应用离轴如下：

•Target simulators目标模拟器
•Collimators准直仪
•MTF measuring systems and other optics test devices MTF的测量系统和其它光学测试设备
•Spectroscopic and FTIR systems光谱和红外光谱系统
•Radiometers辐射计
•Beam expanders扩束镜
•Laser divergence measuring systems激光测量系统的分歧
Key advantages of off-axis parabolic mirrors 抛物面反射镜的主要优点离轴

Use of off-axis optics allows optical engineers to achieve the following advantages: 使用离轴光学光学工程师可以实现以下优点：

•Minimize system sizes减少系统尺寸
•Minimize system weightZ小化系统的重量
•Both “wedged” and equi-thick mirrors are available两者“楔”与等厚的镜子，可
•Minimize system cost系统成本Z小化
All this results in maximization of system efficiency and marketability.这一切导致系统效率和市场化的Z大化。