Illumination device using a laser

Claim 1

An illumination device for illuminating an object with light from a pulsed laser beam light source of wavelength λ that is directed toward said object by a vibration mirror, the vibration of which forms, from said pulsed laser beam, a secondary light source having N spots, comprising an array of M lens elements between said secondary light source and said object, said lens elements being arranged at a spacing d along one dimension of the array and disposed at a spatial coherent area of light from said secondary light source, said device meeting the following conditions: d=m.(λ/θ.sub.o) N.(λ/θ.sub.o)>M.d where m is an integer and θ o is an angle representing the range of variation of the angle of incidence of said light from said secondary light source incident on said lens elements, and means for adjusting the intensity of light illuminating said object such that the total light intensity of pulses of light emitted by said pulsed laser light source is substantially equal to a light intensity required by said object.