Patent ID: 9097965
Filing Date: 2015-08-04
Classification: G02B,G03B,H04N

Abstract:
1. An image projection device comprising: beam generation unit that emits a plurality of beams in one direction such that said plurality of beams are superimposed on each other, a convergence angle of each beam being different from each other; and scanning unit that scans a projection surface with the beams emitted from said beam generation unit, wherein, from among said plurality of beams, with respect to a first beam and a second beam, said second beam includes a next larger convergence angle than that of said first beam in which an energy density of said first beam, at a position where a beam waist of said first beam is present, coincides with an energy density of said second beam at a position in a range from a position where a beam waist of said second beam is present to a position of Rayleigh length on a divergent side.