摘要
过主点H(H′)的一对共轭光线 ,物理意义很明显 ,用来作图求象亦十分简捷方便 .所以在作图求象的基本光线中 ,应补上这一条新光线 。
A couple of conjugation rags through principal point lare obvious physical parport. It is also convenient when using them to construct and form image. We should complement a new rag among basic rags in the wag of construction and forming image. thus, the three traditional hasic rags add up to four.
出处
《沈阳师范学院学报（自然科学版）》
2000年第3期23-26,共4页
Journal of Shenyang Normal University(Natural Science)
