Learning Forum

[Jialin Yan]

Hellow, I have built a reflective model with hologram2 in sequential mode, while the both constructing points are at the same side regarding the normal at incidence angles of 53° and 70°, respectively. however, it prompted with "Pupil ray TIR at surface 6!". 

In this picture below, the incidence angles are 7° and 70°，and it works well. Then with changing 7° into 53° and setting the corresponding constructing point as well, emerges the error prompt.

So what' s the problem and how to deal with it?

[Niki Papachristou]

Hi Jilian,

Thank you for reaching out to us! This Pupil Ray TIR error is kind of a broad generic error message, which basically means rays undergo TIR at the specified surface, therefore fail to trace to the image plane. Will you be able to share a screenshot of your Lens Data Editor? So I can check if something should be differently set up?

Kind Regards,

Niki

[Jialin Yan]

[Jialin Yan]

Hi Niki. The picture below is a screenshot of my Lens Data Editor. I have no idea what the problem is yet. So please help me with it. Thanks very much!

Regards,

Jialin

[Niki Papachristou]

Hi Jialin,

Thank you for your reply. I believe that the issue might be caused by the fact that you have the hologram surface set as STOP at the same time. Can you try creating an extra dummy surface above surface 5 and make this one as STOP?

Kind Regards,

Niki

[Jialin Yan]

OK, it works, thanks a lot! But why can not hologram surface be set as STOP and what's the difference after creating an extra dummy surface before it?

Regards,

Jialin

[Niki Papachristou]

Hi Jialin,

Happy to hear that with this modification helped you overcome the TIR error issue. To be frank I am not quite sure either why this affects your raytrace process. I will have to dive a little bit more before I give you an explanation.

Kind Regards,

Niki