Laser Safety

Laser's used in 3D scanning are safe for anyone

08-06-2016

Laser Safety – Can I walk past the machine?

Generally, we will say no if it is operating, but this is not for safety reasons. This is because it creates noise in the data.
Ever since Laser scanning became a trusted service in Oil & Gas and Mining the question constantly raised by clients is,

Do we need to create an exclusion zone? are my eyes at risk of damage if I look at the laser?

In Short the answer to both these questions is no, The laser scanning systems used by LSA adhere to strict industry guidelines, these systems usually conform to the Class 1 system which  by definition is:

A Class 1 laser is safe under all conditions of normal use. This means the maximum permissible exposure (MPE) cannot be exceeded when viewing a laser with the naked eye or with the aid of typical magnifying optics (e.g. telescope or microscope). To verify compliance, the standard specifies the aperture and distance corresponding to the naked eye, a typical telescope viewing a collimated beam, and a typical microscope viewing a divergent beam. It is important to realize that certain lasers classified as Class 1 may still pose a hazard when viewed with a telescope or microscope of sufficiently large aperture. For example, a high-power laser with a very large collimated beam or very highly divergent beam may be classified as Class 1 if the power that passes through the apertures defined in the standard is less than the AEL for Class 1; however, an unsafe power level may be collected by a magnifying optic with larger aperture.

our SPecialist machines carry different lasers

If we were to use our Laser Tracking system which conforms to a class 2 specification this machine requires an operator to be standing facing the machine throughout its operation which is completely safe at all times the class 2 definition is:

A Class 2 laser is considered to be safe because the blink reflex (glare aversion response to bright lights) will limit the exposure to no more than 0.25 seconds. It only applies to visible-light lasers (400–700 nm). Class-2 lasers are limited to 1 mW continuous wave, or more if the emission time is less than 0.25 seconds or if the light is not spatially coherent. Intentional suppression of the blink reflex could lead to eye injury. Some laser pointers and measuring instruments are class 2.

Finally Our hand held system conforms to the Class 2M Standard and is again inherently safe if used in the correct manner our staff are trained to use this system in all manner of environments and no exclusion zone or extra eye protection is required, the definition of a Class 2M system is:
A Class 2M laser is safe because of the blink reflex if not viewed through optical instruments. As with class 1M, this applies to laser beams with a large diameter or large divergence, for which the amount of light passing through the pupil cannot exceed the limits for class 2.
If a scanner does not fit within these specification we would not attend site without properly arranging correct safety measures. Thanks to these safety ratings we are able to operate our Class 1 system in any environment including busy places like hospitals, construction sites and educational facilities without causing any interruption to daily activity. We do prefer an exclusion zone in the immediate vicinity of the equipment however this is not for safety reasons it is so that the customer receives the cleanest highest quality information.
 If you have any concerns regarding the safety of our equipment or need additional information dont hesitate to contact us.

Western Australia based laser tracking service