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双管比较测角仪法检测五棱镜光坯件光学平行差,比较起来,具有所用仪器简单,不用贴置反光镜片,检测前不需镀反光膜,不经过复杂计算,测量精确,操作简便等优点。本文对测量方法及原理进行了较详细地阐述,并通过验证,生产实践,证明了该方法的正确性和精确性。目前,在生产现场对修改光学平行差的检测和光坯检验是一种较适用的方法。文中对平行差大小端的方向也作了较详细地分析,以便在修改时,给以正确指导。
Compared with the two-tube comparative goniometer method, the optical parallelism of pentaprism optical billet is poor. In comparison, it has the advantages of simple instrument used, no reflective lens, no reflective film before testing, no complicated calculation, accurate measurement and easy operation. advantage. This paper describes the measurement methods and principles in more detail, and through the verification, production practice, to prove the correctness and accuracy of the method. At present, it is a more suitable method to inspect the optical aberration and test the optical billet at the production site. The paper also made a more detailed analysis of the direction of the parallel difference in size, in order to give correct guidance in the modification.