Will optics perfom better with low or high domes?
- Thread starter Mags
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IsaacHayes
Flashlight Enthusiast
Re: Will optics perfom better with low or high dom
HD doesn't have an optic. It's a perfect dome that lets all the light come out as if there wasn't a dome on it. LD focuses the light towards the sides more. Genneraly you can use a HD and a reflector to get a tighter beam. HD are what most everyon experiments with.
HD doesn't have an optic. It's a perfect dome that lets all the light come out as if there wasn't a dome on it. LD focuses the light towards the sides more. Genneraly you can use a HD and a reflector to get a tighter beam. HD are what most everyon experiments with.
wasabe64
Flashaholic*
Re: Will optics perfom better with low or high dom
LD's aren't all that popular nowadays with all of the reflectors available for Luxeons. The beam angle on a LD is 110 degrees while the beam angle on a HD is 150 degrees, so the HD is more compatible with a reflector.
They aren't totally worthless though. They are still easier to center with optics (NX01 or NX05).
For performance with optics, most optics are tailored for a specific emitter style. The Fraen LP is made for use with HD emitters while the NX01 was made for LD. The NX05 optic can be used with both, a HD when properly centered will create a tighter hotspot than a LD.
LD's aren't all that popular nowadays with all of the reflectors available for Luxeons. The beam angle on a LD is 110 degrees while the beam angle on a HD is 150 degrees, so the HD is more compatible with a reflector.
They aren't totally worthless though. They are still easier to center with optics (NX01 or NX05).
For performance with optics, most optics are tailored for a specific emitter style. The Fraen LP is made for use with HD emitters while the NX01 was made for LD. The NX05 optic can be used with both, a HD when properly centered will create a tighter hotspot than a LD.
greenLED
Flashaholic
Re: Will optics perfom better with low or high dom
It depends on the application, Mags. I feel most of us like tighter beams (granted, with varying degrees of sidespill) for flashlights, but if I were building an area light, I'd probably use a LD.
It depends on the application, Mags. I feel most of us like tighter beams (granted, with varying degrees of sidespill) for flashlights, but if I were building an area light, I'd probably use a LD.
Re: Will optics perfom better with low or high dom
Steve,
I short, the low dome is what you should use the optic with. If you are using a high dome, use a reflector. Low domes don't work well with reflectors, and high domes are better with reflectors than they are with optics.
How do you like that for confusing? /ubbthreads/images/graemlins/poke2.gif /ubbthreads/images/graemlins/grin.gif
Steve,
I short, the low dome is what you should use the optic with. If you are using a high dome, use a reflector. Low domes don't work well with reflectors, and high domes are better with reflectors than they are with optics.
How do you like that for confusing? /ubbthreads/images/graemlins/poke2.gif /ubbthreads/images/graemlins/grin.gif
