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Recent content by moh17

  1. M

    Laserlands True 5mW 450nm Laser Pointer

    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...
  2. M

    Laserlands True 5mW 450nm Laser Pointer

    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...
  3. M

    Cheap ebay Orange Laser

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

    Cheap ebay Orange Laser

    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.
  5. M

    Cheap ebay Orange Laser

    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...
  6. M

    Cheap ebay Orange Laser

    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...
  7. M

    Cheap ebay Orange Laser

    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...
  8. M

    Any ideas why my green laser power increases

    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.
  9. M

    Any ideas why my green laser power increases

    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...
  10. M

    Aliexpress safety glasses

    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...
  11. M

    Review: Waveshare Laser Receiver Module

    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...
  12. M

    Need help which laser to buy

    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
  13. M

    Review: Waveshare Laser Receiver Module

    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...
  14. M

    Orion Sky line Green Laser < 5mW

    Hope you believe me I win a bid on ebay. The laser costs me $ 27 including USPS priority express. It arrives in 2 days in the original box with everything including the original battery no wear no sign of use. The seller have young children and was afraid of the laser getting to their hands :D...
  15. M

    Laserbtb 405nm <5mW Tested with LPMs

    The Laser comes in a plastic box without batteries for easily custom clearance. Laser model is LP 405nm - 5B Maximum Power is 5mW My LPM reading shows 4.03mW and 4.78mW maximum power ( pretty close to Kevin measurement:D) Specification Wavelength 405nm Beam Color violet Transverse...




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