Introduction to nano-lasers for laser rangefinders
As the name suggests, a laser rangefinder is a measuring tool that uses a laser as a carrier to achieve distance measurement. Currently, handheld laser rangefinders on the market use the following lasers: semiconductor lasers with operating wavelengths of 905 nm and 1540 nm, and YAG lasers with operating wavelengths of 1064 nm. 1064 nm wavelengths are harmful to the human skin and eyes, especially if the eyes accidentally come into contact with 1064 nm wavelengths of lasers, the damage to the eyes may be permanent. permanent. Therefore, in foreign countries, handheld laser rangefinders, completely outlawed 1064nm laser. In China, certain manufacturers still produce 1064nm laser rangefinders.
For 905nm and 1540nm laser rangefinders, we call them "safe". For 1064nm laser rangefinders, because it is potentially harmful to the human body, so we call it "unsafe".
Laser rangefinder, due to the use of laser distance measurement, and pulsed laser beam is a monochromatic light source of very concentrated energy, so do not use the use of the eyes to the emitting port to look directly, and do not use the aiming telescope to observe the smooth reflective surface, in order to avoid injury to the human eye. Be sure to measure according to the safe operation specification in the instrument manual. When measuring in the field, do not point the emission port of the instrument directly at the sun to avoid burning the photosensitive components of the instrument.
