Request InfoRoithner Lasertechnik GmbHRoithner Lasertechnik introduces high-power visible laser diodes with a bright red 650-nm laser beam. They have optical powers up to 50 mW continuous wave, and the company says they are easy to operate. They run on two standard batteries. A fully coated three-lens glass collimator generates a spot less than 5 mm at a distance of 5 m. The devices have a 20-mm diameter, are 50 mm long and weigh 74 g. 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