标题: question about field flattener [打印本页] 作者: gudong 时间: 2003-11-22 20:00 标题: question about field flattener
I am using a Newport PAC040, (you should be able to find data through lens catalogs), and the major aberration is Petzval. I am thinking to use a negative lens near image plane as field flattener, but do not how to design such a lens. generally, what principle should I follow?
thanks in advance!
作者: gudong 时间: 2003-11-26 13:46 标题: question about field flattener
noboday answer this?
Anybody can give a guildline on how to choose lens?
when I need pick some lens from catalogs, I only know Focus length and Diameter, but there is so many of such lens with same F and D...
作者: ukyochen 时间: 2003-11-26 17:00
提示: 作者被禁止或删除 内容自动屏蔽作者: gudong 时间: 2003-11-26 20:13 标题: question about field flattener
well, if I design lens, I probablly can set 2 faces as variable and optimize them. however, in real world, you would not find such lens. so my question is: during the system design, how to choose lens from catalogs to minimize aberration?
作者: ukyochen 时间: 2003-11-26 21:30
提示: 作者被禁止或删除 内容自动屏蔽作者: gudong 时间: 2003-11-27 15:54 标题: question about field flattener what puzzles me is that there are so many different lens from different companies but all have same focus length or similar diameter. I am sure they are all different, maybe different glass V# or different curvature...how do I select a suitable lens? do I need look into all these detail spec? 作者: ukyochen 时间: 2003-11-27 16:52
提示: 作者被禁止或删除 内容自动屏蔽作者: gudong 时间: 2003-11-28 09:35 标题: question about field flattener Thank you very much, ukyochen!
now I can see it needs lots of work to select good lens during the system design.