loomdrop
Newly Enlightened
Hi, is this (COAST HP14) a very powerful/bright LED flashlight? It requires 4 AA batteries. Specs online: highest setting is 629 Lumens and 813 feet distance and on its low setting it is 52 Lumens and 219 feet beam distance. There are different modes; high, low, blinking and the beam spot is adjustable.
For 1 week, I shined this on my skin close up (about an inch away) moving around for several minutes on & off on multiple different days creating video content. Some of those days maybe 3-5 minutes and a few days for longer, maybe 10-15 minutes total close up. I think I remember feeling a little bit of heat, would that be from the visible light or the actual LED working, and Is this dangerous to shine on skin close? After that week, I never did that again.
Recently I read that Visible light can cause skin cellular aging similar in the way UVA through oxidative stress/free radicals does but only if it is high/intense amounts of visible light such as prolonged sunlight (not low amounts from phones or computers). That made me worried. Studies on skin describe mw/cm2 and joules/cm2, would anyone know the approximate power output of this on subject up close? Anyway, it says online that flashlights are usually made from blue light (which is the most powerful visible color right next to UVA). So I thought I'd ask here to see how powerful this COAST HP14 LED flashlight is or LED flashlights in general?
For 1 week, I shined this on my skin close up (about an inch away) moving around for several minutes on & off on multiple different days creating video content. Some of those days maybe 3-5 minutes and a few days for longer, maybe 10-15 minutes total close up. I think I remember feeling a little bit of heat, would that be from the visible light or the actual LED working, and Is this dangerous to shine on skin close? After that week, I never did that again.
Recently I read that Visible light can cause skin cellular aging similar in the way UVA through oxidative stress/free radicals does but only if it is high/intense amounts of visible light such as prolonged sunlight (not low amounts from phones or computers). That made me worried. Studies on skin describe mw/cm2 and joules/cm2, would anyone know the approximate power output of this on subject up close? Anyway, it says online that flashlights are usually made from blue light (which is the most powerful visible color right next to UVA). So I thought I'd ask here to see how powerful this COAST HP14 LED flashlight is or LED flashlights in general?