CAJ | 학술논문

基于几何作图法推导出R-C系统外遮光罩内挡光环顶点的坐标公式,利用C语言编程实现程序化设计挡光环.在中心遮光比确定的情况下,推导出内遮光罩的顶点坐标公式,并将通常使用的主镜一级锥状遮光罩改进为二级锥状遮光罩,以高速摄影系统的R-C型折反式主物镜为例,对其主镜和次镜内遮光罩进行设计,并给出设计结果.当轴角为70°,遮光罩为二级和一级时,到达像面的杂散光照度分别为1.082 3×10-12 W/m2和1.661 4×10-10 W/m2,相差二个数量级,证明改进的二级遮光罩优于一级遮光罩,能有效抑制杂散光.最后,设计了主、次镜间镜筒内壁上等高挡光环,进一步抑制了R-C系统的杂散光.
기우궤하작도법추도출R-C계통외차광조내당광배정점적좌표공식,이용C어언편정실현정서화설계당광배.재중심차광비학정적정황하,추도출내차광조적정점좌표공식,병장통상사용적주경일급추상차광조개진위이급추상차광조,이고속섭영계통적R-C형절반식주물경위례,대기주경화차경내차광조진행설계,병급출설계결과.당축각위70°,차광조위이급화일급시,도체상면적잡산광조도분별위1.082 3×10-12 W/m2화1.661 4×10-10 W/m2,상차이개수량급,증명개진적이급차광조우우일급차광조,능유효억제잡산광.최후,설계료주、차경간경통내벽상등고당광배,진일보억제료R-C계통적잡산광.
The vertex coordinate formulas for outer baffle vanes of R-C system are deduced based on geometrography, and the vanes are designed with C-language program. The vertex coordinate formulas of inner baffle are also deduced after assuring the central obscuration ratio, and then the common one-grade conical baffle is improved into the two-grade one. The correctness of baffle design is proved by an example and its simulated analysis, meanwhile an effective way of suppressing the stray light is provided. Finally, the same-height vanes in drawtube between primary and secondary mirrors are designed for further suppressing the stray light in R-C system.