How to control the angle and range of a light I am working on project where I am using an infrared light. I want to simulate my real scene on blender. I am using a Cycles Render engine. I want to choose a point light. It is possible to fix a level angle visual range (45 degrees in the real scene)? The viewing range (80meter in the real scene). Any explanation will be appreciated. I need to simulate this light:

Illuminating range: Standard 45Â°
Viewing range: 80m (outdoor)



I used the solution proposed in the create an array of lamps? to model the Infrared light mentioned above which has these properties:


Led quantity: 96 leds.
Wave length: 850nM.
Illuminating range: Standard 45Â° level angle visual range
Viewing range: 80m (outdoor).


The fisheye camera is installed in the ceiling in a room.

When we use the wave length node, the array of lamps does not emit a sufficient light!!
If you want to keep it in cycles, you'd better model your own lamp as anything can cast light. This way you can control the shape and with a light falloff node you can control the distance.



assign the correct shader : emission for the face you want to cast light, plastic or anything else for the other parts.