US 12,461,425 B2
Projection device
Wei-Hao Chen, Hsin-Chu (TW); and Ken-Teng Peng, Hsin-Chu (TW)
Assigned to Coretronic Corporation, Hsin-Chu (TW)
Filed by Coretronic Corporation, Hsin-Chu (TW)
Filed on Dec. 16, 2022, as Appl. No. 18/082,593.
Claims priority of application No. 202111610821.3 (CN), filed on Dec. 27, 2021.
Prior Publication US 2023/0205047 A1, Jun. 29, 2023
Int. Cl. G03B 5/00 (2021.01); G02B 26/08 (2006.01); G03B 21/14 (2006.01)
CPC G03B 5/00 (2013.01) [G02B 26/0883 (2013.01); G03B 21/14 (2013.01); G03B 2205/0053 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A projection device, comprising:
an illumination system configured to provide an illumination beam;
a light valve arranged on a transmission path of the illumination beam and configured to convert the illumination beam into an image beam;
a projection lens arranged on a transmission path of the image beam and configured to project the image beam out of the projection device;
a first actuating module connected to a first element in a first group and moving the first element, so that the image beam shifts back and forth along at least one of a first direction, a second direction, and a third direction respectively; and
a second actuating module connected to a second element in a second group and moving the second element, so that the image beam shifts back and forth along at least one of the first direction, the second direction, and the third direction respectively, wherein the first direction and the second direction are perpendicular to each other, the third direction and the first direction form an angle of 45 degrees, and the third direction and the second direction form an angle of 45 degrees,
wherein the first element in the first group is one of the light valve, a flat plate light-transmitting element, a prism module, and the projection lens,
the second element in the second group is one of the light valve, the flat plate light-transmitting element, the prism module, and the projection lens, and
the first actuating module and the second actuating module are respectively connected to different elements.