it is not the best,but it is very useful to simulate the optical system

The choice of optical design software strongly depends on your application.

The first question to answer is if sequential ray tracing is enough or if you need nonsequential ray tracing (e.g. multiple reflections, scattering. diffraction etc.).

Will you design customized optical elements or do you use catalogue elements?

I have been using OSLO for a very long time and it's a great program for modeling sequential systems. There's a free edition available called OSLO EDU which is perfect for teaching purposes and learning the concept of optical design.

For nonsequential system design I've been using ASAP, but ASAP is hard to learn as it is some kind of a macro language. ASAP is extremely powerful but also a very expensive piece of software.

Just recently I have been using ZEMAX and I agree with the others. It's a  reasonable compromise to have both the intuitive GUI and powerful raytracing and optimization algorithms in one piece of software.

Is Zemax suitable for designing visible light communication system?

Zemax is a good one because i am using it.

But few other simulation software's are there like CODE V. But dont have any idea about its futures

Hello Everyone

Can anyone suggest any free software like Zemax sequential system? 

Thank you. 

Naim 

Is it possible to compare from functionality perspective, the same purpose of ZEMAX and ASAP (by Breault Research Organization) if you could please share your knowledge for those in the field that have used it it would be greatly appreciated

Thank you all!

Which software that you recommended to use to determine the complex dielectric function of the material using RT as an input data?

which software will be best to design dual lens for mobile camera

Can anybody suggest me a how to learn non seq. mode?

Timo Eppig

Divakar Mani

Michael Young

Sneha Chand

Tracepro is good