Patent ID: 9247221
Filing Date: 2016-01-26
CPC Classification: G02B,G03B,H04N

Claim Text:
1. A scanning type projector two-dimensionally projecting a laser beam and generating an image, comprising: a light source having a light intensity corresponding to a pixel of the image and emitting a laser beam having an elliptical beam; a collimator lens collimating a laser beam emitted from the light source; a beam contracting/shaping element that reduces a luminous beam width in a predetermined direction of the laser beam emitted from the collimator lens; a condensing lens that converts the laser beam emitted from the beam contracting/shaping element into focused light corresponding to a projection distance; and a two-dimensional scanning unit configured to two-dimensionally scan and project the laser beam emitted from the condensing lens; wherein an elliptic major axis direction of the laser beam having an elliptical beam emitted from the light source and a luminous beam contracting direction of the beam contracting/shaping element are coincident with each other, and wherein the beam contracting/shaping element comprises a convex cylindrical lens and a concave cylindrical lens.