"Peter" wrote:
> I'm an Optics guy. I have a hard time getting a "visible" light beam from
> POVRay.
> I would like to generate a beam (e.g. spot light source) which can be visible
> and directed towards an object or lens.
> 
> I have enabled photons mapping and stuff for the light source and objects, but
> the beam is only visible when it hits the object. It's not visible in air or
> the background.
> 
> How can I simulate a laser beam? Can anybody point me to the right resources
> (tutorials, example pov files, etc...)?

cylinder {
   StartPoint,EndPoint,Radius hollow
   texture {
     pigment { rgbt 1 }
   }
   interior {
     media { emission LaserBrightness absorption LaserBrightness }
   }
}

Regards,
John

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