LX5 - Invisible Light™ optical technology

Guru

Guru

Guru

Soldato
Joined
8 Jun 2005
Posts
5,275
What the hell??

How does this mouse have no red light and still work?

Can it still hurt my eyes?

Im gobsmacked by this thing, I don't get it. LOL

Cheers,

G

p.s. 8 months battery life has got to be BS surely? I'm guessing they mean for someone who uses it for like 5 minutes a day or something?
 
Guru said:
Can that hurt my eyes?

or more importantly my son's eyes.
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just in the same way a visible led would. normal exposure will be harmless, as would a normal LED but staring at it for hours on end will do the same damage a normal LED would, but in a different way.

:)

smsmasters said:
No it can't, it's near the spectrum of visible light so it's safe
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incorrect.
 
One way to tell in it is IR. Hold up a camera phone and watch it while you press buttons etc. Works for TV remotes and the like too.
 
Aod said:
just in the same way a visible led would. normal exposure will be harmless, as would a normal LED but staring at it for hours on end will do the same damage a normal LED would, but in a different way.

:)



incorrect.
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Ermmm...I think you need to look at this... IR falls right next to the spectrum of visible light... I didn't study A2 Physics for nothing...

em_spect.jpg
 
It could also be UV (other end of the spectrum) - but IR led's are cheaper than UV ones, so I'm gonna go with IR also...

CCTV and traffic lights (I think) also use IR, so I doubt it's very harmful.
 
Guru said:
p.s. 8 months battery life has got to be BS surely? I'm guessing they mean for someone who uses it for like 5 minutes a day or something?
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Nope, logitech are bloody good with battery life. I bought an LX7 in january and didn't have to change the batteries till august. used it daily as my mouse for over a year last year and have since given it to my mum. It is yet to need another battery change.

:)
 
smsmasters said:
Ermmm...I think you need to look at this... IR falls right next to the spectrum of visible light... I didn't study A2 Physics for nothing...
Click to expand...

I think what he was getting at is that you were wrong to say that it's not harmful because it's close to visible light. Any electro-magnetic radiation can be harmful given enough power (Or amplitude as we say in the biz ;) ). I work with a Green laser at work that can engrave my name on the back of a penny, Visible light, but not the kind you want to mess with.
 
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wasn't the first mouse to go without the red light Razer's Diamondback plasma?
I know my DeathAdder is also infra red :)
 
smsmasters said:
Ermmm...I think you need to look at this... IR falls right next to the spectrum of visible light... I didn't study A2 Physics for nothing...

em_spect.jpg
Click to expand...

i'm doing A2 Physics right now too. thats not the point, because you don't learn about high-powered lasers in A2 physics.

just because the photoreceptors in the eye are not stimulated by IR light, it is still damaging to them. :rolleyes:
 
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