Patent ID: 7362488

Claim:
A scanning type display comprising: (a) a modulatable light source; (b) an optical deflector including; a frame member; a tiltable body; and a torsion spring having a twisting longitudinal axis, said torsion spring being disposed along the twisting longitudinal axis, said torsion spring supporting said tiltable body flexibly and rotatably about the twisting longitudinal axis relative to said frame member, said torsion spring including a plurality of planar portions, compliant directions of said planar portions intersecting each other when viewed along a direction of the twisting longitudinal axis, and a center of gravity of said tiltable body being positioned on the twisting longitudinal axis of said torsion spring; driving means for driving said tiltable body relative to said frame member; and light deflecting means for deflecting a beam of light impinging on said tiltable body from said light source, said light deflecting means being provided on said tiltable body; (c) a picture display screen on which the beam of light from said deflecting means is projected; and (d) control means for controlling modulation of said modulatable light source and operation of said tiltable body of said optical deflector in an interlocking manner.