Determination of focal length of large focal length convex lenses

被引：3
|
作者：
Prakash, O
Ram, RS
机构：
[1] National Physical Laboratory, Length Standard Section, New Delhi
来源：
OPTICS AND LASER TECHNOLOGY | 1996年 / 28卷 / 01期
关键词：
convex lenses; optical components; focal length; optical measurements;
D O I：
10.1016/0030-3992(95)00055-0
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In the determination of focal length of large focal length lenses, conventionally, a large length of optical bench is needed to accommodate the experimental set-up, and the measurements are associated with bench errors. In order to overcome these drawbacks, a simple method is suggested wherein the use of a plane mirror reduces the required length of the optical bench by nearly a factor of two and the bench errors are minimized with the use of a travelling microscope for the measurement of distances.
引用
收藏
页码：43 / 45
页数：3
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