Laser beam level instrument

摘要: A lightweight, portable laser beam level instrument has an optical path which includes a solid state light source; pendulous, positive lens; rotatable pentaprism or mirror equivalent; and glass plate is tilted to provide fine tuning. The also damping mechanism, waterproof enclosure clip-in battery pack. source diode in specific embodiment produces intense of rapidly diverging infrared light. postiive lens suspended below the at approximately focal length from collimate pendulous suspension maintains truly vertical position with respect earth self-leveling limited range movement instrument. equivalent converts this horizontal beam. positioned between can be two orthogonal degrees adjustment tuning for centering lens. Oscillation damped by magnetic air damping.