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One term is Minimum/Maximum Output Power: There are some terms you might see that are used to describe laser power measurements. When this second method of defining a laser’s power is used, it is important for you as a customer to be able to correctly understand and interpret the amount of power your laser is capable of producing, at the output window. Typically, on the order of 15-30% of the power is lost inside the projector, as the beams travel through the optical path. The amount of power lost varies depending on the quality of the optics, the beam path design, and other factors. It could even be that the name or model number is unrelated to the laser power.īecause the beam must then go through combining optics and then bounce off steering and scanner mirrors, inevitably there will be some power lost before the beams finally exit through the output window. A projector called “Beautiful Laser 2500” could be 2500 mW (2.5 W) at some point in the beam path- or it could be less powerful. Similarly, the laser name or model number may or may not accurately reflect the power of the laser beam.It may also be done so that a limited range of labels needs to be printed and kept in stock for example, for use on lasers less than 1 watt, on lasers between 1 and 5 watts, on lasers between 5 and 10 watts, etc.) (This may be done to have an extra “safety factor”: e.g., treat the laser as if it were 5 watts. The label is true - the laser emits less than 5 watts - but the Warning/Danger label in this case is stating a power that the laser could not reach. In some cases, the Warning/Danger label’s stated power level may be well above the maximum the laser could ever put out.įor example, the label may state that the power is “<5 W” when the laser beam is only 2 watts.
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The Warning or Danger label required on laser equipment will state a power level which is at or above the maximum the laser could ever produce.To know the power of a laser projector, do NOT rely solely on the Warning/Danger label, or the model name/number. To give an example, 500 mW is the same as 1/2 watt. Laser power is measured in milliwatts or watts. Laserium® Laserist: Greatest Job on Earth.Restrictions on Individual, Hobbyist & Student Members.Member & Event Management (MEM) website.