How powerful is a 1mW laser pointer?
8 Answers. Dear Thomas, the diameter of the beams of these HeNe lasers is between 0.5 and 1 millimeter, so the power 1 mW is coming to 10−6 squared meters or so. The ratio of power and area is 10−3/10−6=10+3 Watts per squared meter.
How far can a 5mW laser pointer go?
A 5 milliwatt laser: a distraction 2 miles away It is a potential eye hazard from the pointer to about 52 feet. It is a temporary flashblindness hazard from the pointer, out to about 260 feet.
Can 1mW laser blind you?
If a Class 1 device is modified, laser exposures are possible. Class 2 lasers are low power (< 1mW), visible light lasers that could possibly cause damage to a person’s eyes. Realize that the bright light of a Class 2 laser beam into your eyes will cause a normal reaction to look away or close your eyes.
How far can a 1mW laser go?
The 1 mW red pointer has a glare distance of 255 feet, compared to the same power green laser, which can cause glare at 490 feet.
What is 532 nm laser?
532 nm wavelength or a green laser of the MatchBox™ series. 532 nm represents second harmonics of fundamental 1064 nm radiation, emitted by Neodymium doped lasing material. Green lasers are used in various applications, such as fluorescence spectroscopy, optical alignment, dermatology, pumping of Ti:Sapphire lasers.
Why is a green laser illegal?
And yes, lasers above 5 mW are commercially available in the United States, but it is illegal to market them as Class IIIa devices. Reflecting back off of the dust and suspended particles in the atmosphere, a green laser provides a pointer beam allowing the user to trace out constellations and faint objects.
Is 532 nm laser good?
Illumination by handheld green lasers is particularly serious, as the wavelength (532 nm) is near peak sensitivity of the dark-adapted eye and may appear to be 35 times brighter than a red laser of identical power output.
Is 5mw laser safe?
The 5 mW laser is a Class 3R laser and is considered eye safe under the following conditions: No optical instruments are used to observe the beam. Your reflexes cause you to blink or look away within 1/4 second. You do not look at the beam again for along time.
Is 5mW laser safe for cats?
If you use a laser pointer while playing with your cat, follow these safety precautions: Use a low-wattage light, with a maximum power output of 5 milliwatts. Never shine the light directly into your cat’s eyes.
How far will a 532nm laser go?
High Power 30 Miles Range 532nm Green Laser Pointer Light Lazer Pen Visible Beam.
Are 5mw laser pointers illegal?
Those handheld green lasers pointers may not be as harmless as you thought. The Code of Federal Regulations in the United States limits commercial class IIIa lasers to 5 milliwatts (mW). And yes, lasers above 5 mW are commercially available in the United States, but it is illegal to market them as Class IIIa devices.
Why are blue lasers illegal?
Laser pointers with much higher power output aren’t hard to buy online, however, despite being classed by the FDA as causing immediate skin and eye damage when viewed directly. Blue and violet lasers can be particularly dangerous because human eyes are least sensitive to these color frequencies.
What class does a 5MW laser pointer belong to?
5mW Laser Pointer belong to class llla. The 5mw green laser pointers are the safest power laser pointers to use. You can also use 5mw astronomy laser pointers for pointing purposes since the beam is still visible in dark lighting conditions.
What is the best 5MW laser to use?
5mW Laser Pointer belong to class llla and safest laser pointers to use. You can also use 5mw lasers for pointing purposes since the beam is still visible in dark lighting. Laser 301 5mW 532nm Professional Green Light Laser Pointer Pen Set Black
How many milliwatt does a laser pointer have?
Most laser pointers on the market are designed to have a five-milliwatt beam. There are certain legal limits for these laser pointers in certain places. In the United States, laser pointers are supposed to stay under the 5mW limit in order to be sold. There are actually many laser points that exceed this limit, though.
What is the safest power laser pointer to use?
The 5mw green laser pointers are the safest power laser pointers to use. You can also use 5mw astronomy laser pointers for pointing purposes since the beam is still visible in dark lighting conditions.