Optical tracking apparatus

摘要: This invention consists of an optical tracking apparatus comprising a source parallel light, such as laser, which irradiates the object to be tracked. A light scanning device, is disposed between and object, provided deflect or scan from across convex lens focus reflected object. detector receives converts it into electrical signal. The output fed phase senses its with reference device. Deviation center scanned selected position on tracked detected, servo-system reduce deviation zero.