Learning Forum

[CHANDAN]

I designed a binary surface in my optical system. When I am generating the drawing of binary surface in zemax, it is generating attachment  but it is not binary. How can I design/draw the standard drawing of my binary surface?

 

 

[Christophe Weisse]

Hi, thanks for your question.
There is no ISO standard for binary elements - as they really are a combination of a sag profile and phase information.
A user shared a macro to visualize the sag of such an element in this article : How to calculate the sag of a diffractive optical element with a macro – Knowledgebase

There's a lot of useful information in this article, especially re. the step height of binary surfaces


As you can see, the order of magnitude of the step height is the wavelength, depending on the shape of the base surface, it would be challenging to clearly see on a standard drawing.
In the macro shared in the above mentionned article, you may generate a "total sag" profile with the desired radial sampling.
I hope this helps,
Christophe