gcbryan
Flashlight Enthusiast
Has anyone found a small dark red LED flashlight? One where on a low setting you couldn't see the light but could on a high setting?
I know they aren't going to sell one with a setting that you can't see so maybe it would have a high setting only but be dark red enough so that if current was reduced much more it wouldn't be visible.
The idea would be to see if there actually is a color where on high the cones are sensitive but not the rods.
Every "red" LED light that I have has visible light no matter how low the setting. I have a Proton Pro that gets so low on red that in a completely dark room on low I can't see the beam of the light past 4 feet.
Obviously only the rods are functioning at this point and I can't see color but they are still sensitive to the LED. Is there actually a dark red LED used in an existing light where the rods wouldn't be affected?
I know in theory you would pick in the high 600 nm range and the rods shouldn't be sensitive but there isn't going to be a ready made light using that with a low mode (if you can't see it) but there might be one with high mode only. You could try to use neutral density filters to reduce the output to simulate a low mode and determine if it isn't visible when only the rods are in play.
Any ideas? I don't have soldering skills or I would just order the bare emitter.
I know they aren't going to sell one with a setting that you can't see so maybe it would have a high setting only but be dark red enough so that if current was reduced much more it wouldn't be visible.
The idea would be to see if there actually is a color where on high the cones are sensitive but not the rods.
Every "red" LED light that I have has visible light no matter how low the setting. I have a Proton Pro that gets so low on red that in a completely dark room on low I can't see the beam of the light past 4 feet.
Obviously only the rods are functioning at this point and I can't see color but they are still sensitive to the LED. Is there actually a dark red LED used in an existing light where the rods wouldn't be affected?
I know in theory you would pick in the high 600 nm range and the rods shouldn't be sensitive but there isn't going to be a ready made light using that with a low mode (if you can't see it) but there might be one with high mode only. You could try to use neutral density filters to reduce the output to simulate a low mode and determine if it isn't visible when only the rods are in play.
Any ideas? I don't have soldering skills or I would just order the bare emitter.