A laser pointer or laser pen is a portable and visible laser. It is designed to highlight something of interest by projecting a small bright spot of colored light onto it. The small width of the beam and low power of typical laser pointers make the beam itself invisible in a reasonably clean atmosphere, showing a point of light when striking an opaque surface. Some higher-powered laser pointers project a visible beam via scattering from dust particles or water/fog droplets along the beam path. Higher power and higher frequency lasers may have a visible beam even in clean air due to Rayleigh scattering from air molecules, especially when viewed in moderately-to-dimly lit conditions. The intensity of such scattering increases when these beams are viewed from angles near the beam axis. Such pointers, particularly in the green-light output range, are used as astronomical-object pointers for teaching purposes, in the same general manner as flashlights.
Manufacturer ?Specifications:
- Output Type: Adjust focus, continuous output and working time is longer than ordinary laser pen
- Output Wavelength: 447nm
- Output Power: 1000mW
- Power: 1 x 18650battery
- Features: Waterproof
- Waterproof: 25 meters
- Size: 25.5 x 140mm/1.0 x 5.5in (Dia. x L)
- Point Shape: Circle
- Spot Diameter at 15meter: 20mm±1mm
- Beam Roundness: >90%
- Beam Radiation Angle: 1.5-2.5mrad
- Operating Current: 750mA < I < 1.2A
- Working Voltage: DC = 3.7V
- Trigger Voltage: DC = 3V
- Working Temperature: 0℃~+30℃/20-80RH
- Storage Temperature: -10℃~+50℃/93-95RH
- Power Supply: 1 x 18650 Battery
- Body Material: Metal
- Body Color: Gray
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