How to use LT to do optimization of a lens system?

Lighttools 6.1 can be used to optimize an optics system,but it cost more time than usual

that not means optimize?

通常我用zemax做透鏡優(yōu)化�，F(xiàn)在用的6.1可以分析一些照明系統(tǒng)的聚光鏡優(yōu)化，但是從速度上不是很好。 j"AU z)x  
據(jù)說codeV可以無縫連接到LT，但是我沒有軟件沒試過。

yes，i use lighttools to optimize the lens sZW^!
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but i  put  at most 4 Parameters in once time,that can make the optimiztion go on well w`q%#qRk  
and if you set the Target is the total lum.,that u can set the total no.of the light be less than 10000,that can make the optimiztion  go quick

Could you tell me how to get LT6.1? Thanks