Inspection Lamp Having Reduction of Speckle of Laser Light

摘要

An inspection lamp for detection of fluorescent materials, such as dyes often added to refrigerant fluids for the purpose of detecting leaks. Multiple aspects of reducing a distracting speckle effect are described. For example, at least two aspects are combined. One speckle reduction aspect uses a diffuser. A second speckle reduction aspect is achieved by a laser device such as a laser diode that simultaneously outputs a large number of individual wavelengths across a significant bandwidth. A third aspect of despeckling the laser light includes vibrating or rotating optical components. A fourth aspect of despeckling includes fluorescence and broadband radiation from the laser being more visible through suitable eyewear than the laser radiation.

主权项

1. An inspection lamp for detection of fluorescent material with reduced visible laser speckle, comprising:
a laser device that generates radiation that is suitable for fluorescing the fluorescent material, wherein the laser device simultaneously outputs multiple individual laser wavelengths; at least one diffuser that is positioned to diffuse the radiation; and at least one lens which is shaped to form the radiation into a beam, the beam for detecting the fluorescent material.