home blue LED devices

NickJeter · Joined: 22 Dec 2007 Posts: 28

is there any effective home blue LED devices out there,that have the effective
w/cm2, , joules? what range do those have to be into be effective?

the only one i found is
id fr m evisbeauty.com called mini-marvel

it is 405-425 nm
143.5 w/cm2
24 minutes twice a week

orangehrzn · Joined: 23 Feb 2005 Posts: 1005

"Phototherapy with blue (415 nm) and red (660 nm) light in the
treatment of acne vulgaris", British Journal of Dermatology 2000; 142: 973-978, P.PAPAGEORGIOU, A.KATSAMBAS AND A.CHU

The parameters in the above effective study were

415nm
4.23 mW/cm^2
15mins / day

I'm pretty sure deep blue light diode bulb can achieve such parameters.

davpet · Joined: 28 May 2006 Posts: 83

Omnilux is apparently going to release this product soon :

miinews.com/pdf/fa_ptl_nov07.pdf

NickJeter · Joined: 22 Dec 2007 Posts: 28

the omnilux will be around 400-500 dollars and the minimarvel is
225.

i dont why the big difference in price is if the blue
omnluix
415nm
40 mW/cm2

mini-marvel
415nm
143.5 w/cm2

is mW/cm2 differnent than w/cm2?

orangehrzn · Joined: 23 Feb 2005 Posts: 1005

143.5 W/cm^2 doesn't make any sense, it's HUGE power density that's going to burn your skin if correct

probably it's 143.5 mW/cm^2

The prices of LED devices for skin therapy are overblown out of proportions and are based on marketing strategies not on how effective the device is or how much it costs to build it. Simply buy a deep blue LED light bulb and you will have the same device for 10 times lower cost.

mills · Joined: 09 Nov 2007 Posts: 16

hi orange thank

do you know what the conversion is mW/cm2 to W/cm2

like the one that is 143.5 w/cm2 is that really 14.35 mW/cm2?

thansk

orangehrzn · Joined: 23 Feb 2005 Posts: 1005

The prefix 'milli' means 'one thousandth' so the conversions are

mW = 0.001 W and W = 1000 mW

143.5 W/cm^2 = 143 500 mW/cm^2 (it can't be that high, it's a typo)