IES Laser file! (Unreal / Unity / PBR renders...)

Nov 26, 2020 6:16 AM

This is a super-tight beam laser created by applying an IES emitter file to a surface.
Here's the laser.ies file, just make a TXT file, paste in everything below line, and rename to "laser.ies", done! :
-------------------------------------------------
IESNA91
[TEST]Laser beam IES file
[MANUFAC]SarahC
TILT=NONE
1
-1
1
4
1
1
1
10 10 10
1.0 1.0 0.0
0.0 0.01 0.02 90.0
0.0
100000000000000.0 100000000000000.0 0.0 0.0

The beam's got minimal divergence, and takes on the shape and width of the model.

Often treating a light as a model surface emitter rather than a secondary spot light source is easier to edit in several 3D renderers.

unity

unreal

render

ies

laser