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FrozenGate by Avery

Diffuse reflection of a 5mW dangerours?

mfo

mfo

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Well, I'm sure most of us here have used lasers to play with their cats. My dilemma is this. I have a somewhat glossy floor in one of the rooms where I live. Would a diffuse reflection in the cats eye be harmful with a 5mW laser? What about a 15mW blue laser? :D Please use the pic for reference. Also please note that the reflection is a tad brighter than normal, I guess because the room was poorly lit so the auto settings of my camera compensated by a slightly longer exposure or aperture adjustment.
 

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5mW should be fine, just so long as you don't get a direct hit from a mirror into the cat's eye. I wouldn't use anything over 5mW though, it is not worth the risk.
 
Since the cat won't get more fun for more power (unlike us lol), I'd stick with the <5mW lasers wich are more than enough for them to see it, so if you think you might be taking risks just use wasted batteries. 1mW of green is still more than enough for them!

Answering to the main question, I don't think it's dangerous.
 
Jsut check if the glossy floor doesn't have any collimated reflection and you'll be fine.
 
There are these special 0,5mW red Kittylaz0r$ on Delayextreme...
 
btw, are there any researches of how much mW's can blow cat's eye's retina? or any plots of cat's eye optical sensitivity vs. wavelength?
 
BTW it is frustrating for the cat could not take something that disappears near the legs. After playing with the laser dot I suggest replacing it with a ball.
 
Arayan said:
BTW it is frustrating for the cat could not take something that disappears near the legs. After playing with the laser dot I suggest replacing it with a ball.
Click to expand...

Heh, that's why I always make the dot disappear "under" something like a desk when I don't want to tire the cat out anymore.
 
yeah hahaha my GF cats go crazy if you don't do something like that hahah
 
Last week I found a BBC article from a ophthalmologist with experience with cats and he found 5mw red lasers to be safer for the cat then the human due to the natural reflectivity of a cats eyes.

I really wish I could find the article now (I searched BBC and Google and seem to be drawing a blank. Maybe I'll dig through my history and find it).
 
Diffuse reflections from a 5W laser would be safe. You need extremely high powers (far above hand-helds) for diffuse reflections to pose an eye hazard.
 
davidgdg said:
diffuse reflections from a 5w laser would be safe. You need extremely high powers (far above hand-helds) for diffuse reflections to pose an eye hazard.
Click to expand...
no! no!! no!!!
5 Watts is class 4, dangerous even when viewing a diffuse reflection from the laser. Read the manual!!!
 
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