US 11,792,372 B2
Projector
Aisaku Yokoyama, Fukuyama (JP); Satoru Tamura, Fukuyama (JP); and Junpei Ooi, Fukuyama (JP)
Assigned to Sharp Fukuyama Laser Co., Ltd., Fukuyama (JP)
Filed by Sharp Fukuyama Laser Co., Ltd., Fukuyama (JP)
Filed on Feb. 18, 2022, as Appl. No. 17/675,803.
Claims priority of application No. 2021-026070 (JP), filed on Feb. 22, 2021.
Prior Publication US 2022/0272309 A1, Aug. 25, 2022
Int. Cl. H04N 9/31 (2006.01); G03B 21/20 (2006.01); G02B 13/16 (2006.01)
CPC H04N 9/3129 (2013.01) [G02B 13/16 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A projector comprising:
a laser light source;
a shaping section configured to shape a laser beam emitted from the laser light source; and
a scanning section configured to two-dimensionally scan, on a screen, the laser beam shaped by the shaping section,
wherein under a situation where a distance from an optical emitting surface of the laser beam to the screen is constant, the laser light source and the shaping section are configured to perform two-dimensional scanning of the laser beam on the screen by using a tip of the laser beam corresponding to each of cross sections at a plurality of positions of a tapered portion of the laser beam from the scanning section to a beam waist of the laser beam; and
the laser light source and the shaping section are further configured to project, onto an overall region on the screen, the tip of the laser beam corresponding to each of the cross sections at the plurality of positions of the tapered portion of the laser beam.