Learning Forum

[talimu]

Hi Support team,
Please explain how Zemax calculates the amount of Geometrical Energy for “Y - only” / “X - only” Type and what does it mean?
Is it a fraction from the “Encircled Geometrical Energy” in some way ?
Thanks in Advance,
Tali M.

[Niki Papachristou]

Hi Tamilu,

Thank you for reaching out to us. The analysis type option specifies how the encircled energy is calculated; either encircled (radial), X-only, Y-only, or ensquared Geometric. Hence, this means that when you choose the X-only you will get the encircled energy within the horizontal direction.

Hope that was helpful.

Kind Regards,

Niki

[talimu]

Hi Niki, 

Thank you for your quick reply. 

In Zemax toturial it says:

Discussion The X- and Y-only options will compute the fraction of rays which are contained with plus or minus the specified distance from either the chief ray or the image centroid. If a scale of 10 micrometers is shown, then the region enclosed is 20 micrometers across (and infinite in the other direction). 

Can you please exaplain what "infinite in the other direction" means here? Is it a partial energy from encriceld energy in any way?

Thanks

Talimu 

 

[Niki Papachristou]

Hi Tamilu,

I am not sure I understand what you mean by "partial energy from encriceld energy in any way". I think there isnt something hidden there in the phrase "infinite in the other direction". It means that the fraction of the energy encircled is within an strip that has limits in one direction while is infinite on the other.

Kind Regards,

Niki