Recent content by moh17

I just want to share a safe purple 405 nm with the community. I will be using this laser with my Schlieren system I am currently building. The laser measures 3 mW using a cheap LPM. The power of the laser may be little over 3 mW but definitely less than 5 mW. First, I verified that my LPM is...

Yesterday, I received two laser pointers from Laserlands. A friend of mine unintentionally shined the laser to my right eyes mistakenly. I blinked immediately and I had after images for 1 minute. I got hit from a distance less than 1 meter. I measured the power of the two pointers and it shows...

Case Material Aluminum + Copper for diode casing Dimensions: L = 16 cm, D=14 mm Laser shape: dot Switch mechanism: press ON- release OFF ( Like normal laser presenter) Lens: do not know, you cant access the lens without taking the laser apart. Shipping: It depends on the service you choose...

A true < 5mW 450nm laser from laserlands, costs $ 18, Free Shipping is available but I used DHL :D , It's worth buying. The beam is visible in the dark. Laser power is verified and tested on my university LPM and on my LPM. there was a slight variation of 0.6 mW. The laser is safe for...

Thanks for the information, the seller is calling it Yellow laser. I see it as dark gold color. I never thought it's orange 😃

Isn't 593.5 nm suppose to be called yellow. I have a 593.5 nm yellow 1mW. I bought from UK for equivalent $ 140. I will make a review after my Monday's exams.

You said young child he probably shined the laser in his eye for a good amount of time, a normal person should survive < 5mW laser, 250ms is enough for a normal person to blink. A young child shouldn't be allowed to have a laser pointer. A 5mW can damage your eye only if you resist blinking...

You will blink before damage occurs as long as it is < 5mW so, it is eye safe. I got a direct hit from that laser, I only had after images for a minute and everything returned back to normal. The fact that it is bright and 3mW makes this laser safe as you will blink before damage occurs. It is...

I received the laser today, I measured the output power, it outputs 3mW, which is eye safe. The pen is heavy and has no warring sticker. The dot is visible during the day and the dot is orange at first, I thought it's 20mW or more but it ends up 3mW which is 100 % eye safe...

Thanks, That will be my next purchase :D, I will buy the 520nm laser from laserbtb, they offer good prices and low power output < 5mW. I will ask Kevin to measure the power before shipping it like he did with my < 5mW violet laser.

Hi, I was checking my green laser. It was 4.9 mW in the winter. Now it's varies output 7mW and maximum of 8mW. I added an IR filter and found that it returned back to 4.9mW so, probably there is IR leakage of approximately 3 to 4mW. I'm not sure if that makes the pointer danger or not. 4mW of...

I bought a cheap Chinese safety goggle to use it with moderate power lasers i.e 20mw laser. I tested the glasses on my LPM and I cannot believe what I saw. First claimed Specifications Protection wavelength range: 190nm-540nm Protection features: all-round absorption :crackup: Visible light...

Yes, it has many applications. Probably a good idea in fact I' m planing to add a 405nm laser to detect black objects ; I'm not sure if purple laser will be completely absorbed by black objects or not; hopefully it will work but 520nm is probably the best solution but it is quite expensive at...

I'm planing to buy a 635nm laser pointer and I'm not sure which one is better. First AtlasNova 635nm Red Laser Pointer https://atlasnova.com/RedLaserPointer635nm.htm Second Laserglow Libra Series 635 nm Red Laser Pointer Laserglow Technologies

Hi,, This is a review for a laser proximity sensor. It can be used for different applications like: smart robots. The sensor has a weakness it does not detect black objects since black objects does not reflect the laser (it absorbs most of the red laser). The sensor uses 3 wires 2 for powering...