Different Diffusers ?

[self builder 123]

Hi

Could anyone tell me the difference between a prismatic diffuser and an opal diffuser when it comes to flourescent strip lights ?

Cheers

 

[RF Lighting]

Prismatic:

Clear plastic with lots of spikey bits

Opal:

'Smoked' plastic with no spikey bits

 

[Stoday]

They are both methods of reducing the glare from bare light sources.

Opal does it by scrambling the light so the light source appears to come from a greater area.

Prismatic does the same thing by redirecting the light.

 

[hairyben]

Depends what you mean by the difference, in end user terms opal gives a softer light.

Prismatic controllers are better for work light, but have been superceded by cat II louvres for most commercial uses.