A Red Light for Green Laser Pointers

Jemellie Galang, Alessandro Restelli, Edward W. Hagley and Charles W. Clark

Inexpensive green laser pointers can emit 20 mW of unspecified infrared radiation in addition to their green output. The problem derives from an unsafe design. This article describes a simple diagnostic method to identify hazardous pointers by using a digital camera, a Web camera, a remote control and a compact disc.

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Publish Date: 01 October 2010


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