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RENA Operand

  • February 7, 2023
  • 2 replies
  • 234 views

Dear Community,

Can anybody help me by explaining the RENA operand.

I am not able understand the “ X- direction surface normal ”. It would be very kind if someone could illustrate it. What is the output of this operand. Is it slope or angle in degrees/ radian. 

 

Best answer by MichaelH

Hi Jacob,

The normal vectors, along with all other vectors in OpticStudio, are unit-vectors (and thus unitless).  So the output of the operand is simply the x-component of the 3D normal vector.  This family of operands, along with REA/ABC, to determine the Angle of Exitance from a surface for a specific Hx/Hy/Px/Py ray.

2 replies

MichaelH
Ansys Staff
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  • Ansys Staff
  • 402 replies
  • Answer
  • February 7, 2023

Hi Jacob,

The normal vectors, along with all other vectors in OpticStudio, are unit-vectors (and thus unitless).  So the output of the operand is simply the x-component of the 3D normal vector.  This family of operands, along with REA/ABC, to determine the Angle of Exitance from a surface for a specific Hx/Hy/Px/Py ray.


  • Author
  • 17 replies
  • February 8, 2023

Hi @MichaelH ,

Thanks for the explanation. I understand it now.