摘要
由于反射式离轴抛物镜不产生色差并具有较大的有效孔径，已经广泛应用于辐射校准、宽波段的目标模拟和能量聚焦工作中。影响离轴抛物镜准直特性的主要因素有离轴量，有效孔径和焦面出射点的位置。采用矢量的方法，分析了离轴量等参量和准直性能之间的关系。给出了焦面出射点的位置从0～0．05f，相对孔径D／f从0～0．40，相对离轴量h／f从0．1～0．5变化时，离轴抛物镜准直仪的准直性能曲线。运用CODEV对矢量法的分析结果进行了验证，在条件一致的情形，两者结果吻合。这些结果有助于准直仪的设计。
Reflective off-axis parabolic mirror has been widely used in radiation calibration, broadband target simulation and energy focusing, because it does not produce chromatic-aberration and has bigger available aperture. The basic factors affecting collimating characteristic are off-axis magnitude, effective aperture and emission position on the focal plane of off-axis parabolic mirror. Vector expression is adopted in analyzing the relation between off-axis parabolic parameters and collimation property. Curves for collimation property of the off-axis collimator are given out in three aspects： the emission position on focal plane varied from 0 to 0.05f, the relative aperture D/f varied from 0 to 0.40 and the relative off-axis magnitude h/f varied from 0.1 to 0.5. Analysis results obtained through vector method are validated by CODE V and tally with those from CODE V under the same conditions. The results are helpful to design parabolic collimators.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2006年第6期909-913,共5页
Acta Optica Sinica
关键词
光学仪器
测量与计量
准直仪
矢量方法
离轴抛物镜
准直特性
optical instrumentation
measurement and metrology
collimator
vector method
ott-axis parabolic mirror
collimation property
