I've seen many threads where DIY lights use optics. My one question (totally noobish, I know) is how the degree rating for various optics are calculated. Is it that, say a 13* optic rated as light being spread between the two points of maximum dispersion
/
(ie: l) )
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meaning: is that 13* the distance between the two outermost output of light, or is it like this...
/
(ie: l) ----
\
Where the 13* is the angle of dspersion off of the horizontal plane (in this case, the "----" dashes).
Any clarification of my deluded ideas would be greatly apprecited for any upcoming projects. Thanks! Also, moderators, if this thread fits anywhere else, feel free to move it...
/
(ie: l) )
\
meaning: is that 13* the distance between the two outermost output of light, or is it like this...
/
(ie: l) ----
\
Where the 13* is the angle of dspersion off of the horizontal plane (in this case, the "----" dashes).
Any clarification of my deluded ideas would be greatly apprecited for any upcoming projects. Thanks! Also, moderators, if this thread fits anywhere else, feel free to move it...