![]() ![]() Divergence can be improved (made tighter) using a lens or better engineering of the laser itself. Usually, the more powerful a laser, the larger the typical divergence of the laser. Doubling a laser’s divergence will reduce all of these hazard distances by half. The diagrams above depict the NOHD being reduced by half, but this reduction also applies to skin and fire hazard distances, and to the visual interference distances (flashblindness, glare and distraction). Beyond the Nominal Ocular Hazard Distance, the chance of injury is “vanishingly small” according to safety experts. For example, doubling the divergence will reduce the hazard distances by half:Ĭolor indicates the relative hazard: Red = potential injury, green = unlikely injury. If a laser’s divergence (beam spread) is increased, the hazard distances directly decrease. The text has also been reproduced on this page, for ease of reading.įor additional details, see the web pages Laser safety calculations for eye and visual interference hazard distances and Basic principles of laser beam hazards for aviation. ![]() In addition, text below the chart describes how divergence (beam spread), power and wavelength (color) affects these hazard distances. ![]() The chart below gives hazard distances for selected consumer laser types, and for various parameters such as the beam color, beam spread and power. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |