An illumination device forms a secondary light source having N spots by vibrating a laser beam having a wavelength .lambda. emitted from a pulsed laser by a vibration mirror having a swing angle .theta..sub.0, and irradiates an object to be illuminated through a plurality of lens elements arranged at...http://www.google.es/patents/US4851978?utm_source=gb-gplus-sharePatente US4851978 - Illumination device using a laser