4 ms·
absolutely not safe for eyes in my GitHub the next information "The main limiting factor in the development of this technology is the danger of the laser may d
by ildaron_ron 5y ago
absolutely not safe for eyes
in my GitHub the next information
"The main limiting factor in the development of this technology is the danger of the laser may damage the eyes. The laser can enter a blood vessel and clog it, it can get into a blind spot where nerves from all over the eye go to the brain, you can burn out a line of "pixels" And then the damaged retina can begin to flake off, and this is the path to complete and irreversible loss of vision. This is dangerous because a person may not notice at the beginning of damage from a laser hit: there are no pain receptors there, the brain completes objects in damaged areas (remapping of dead pixels), and only when the damaged area becomes large enough person starts to notice that some objects not visible. We can develop additional security systems, such as human detection, audio sensors, etc. But in any case, we are not able to make the installation 100% safe, since even a laser can be reflected and damage the eye of a person who is not in the field of view of the device and at a distant distance. Therefore, this technology should not be used at home. My strong recommendation - don't use the power laser! I recommend making a device that will track an object using a safe laser pointer."
- _tom_ 5y agoCould you use a laser at a frequency that the cornea is opaque to?
- wnkrshm 5y agoThen you injure the cornea. That's why they use UV lasers for laser surgery, because the cornea absorbs it. Edit: I recently had a small corneal erosion from my eye drying out over night (eyelid was pulled open by sleeping in a weird posture) and I had 30% vision for 2 days on that eye. The cornea contributes about 40% (iirc could be more) to the total refractive power in the eye. If you have a UV-spot that melts moskitos dancing around on that for half a second...
- cobbzilla 5y agoWhat about an infrared laser? Something where a microburst would melt delicate insect wings, but a direct hit on a human eye would just warm it up a tiny bit. Possible?
- detaro 5y agoYou basically can't make laser pulses safe and melt things at the same time, because by nature of having the energy in a short pulse created heat doesn't have time to distribute, so it doesn't matter if you hit a tiny thing or a tiny spot on a larger object, the damage done locally is the same.
- cobbzilla 5y agoI’m confused, are you saying that the minimum amount of energy in an infrared pulse sufficient to melt a fly’s wings (< 1mm) would necessarily also damage a human eye? I have to believe there is a threshold value of safety, particularly with IR. You can tell me I’m wrong, but please provide a bit of physics to justify it.