US 11,693,304 B2
Homogenizing module and projection apparatus
Yu-Hsiang Deng, Hsin-Chu (TW); and Chen-Wei Fan, Hsin-Chu (TW)
Assigned to Coretronic Corporation, Hsin-Chu (TW)
Filed by Coretronic Corporation, Hsin-Chu (TW)
Filed on Feb. 8, 2022, as Appl. No. 17/666,564.
Claims priority of application No. 202120397532.9 (CN), filed on Feb. 23, 2021.
Prior Publication US 2022/0269156 A1, Aug. 25, 2022
Int. Cl. G03B 21/20 (2006.01); G02B 5/02 (2006.01); G02B 27/09 (2006.01)
CPC G03B 21/208 (2013.01) [G02B 5/0257 (2013.01); G02B 5/0278 (2013.01); G02B 27/0961 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A homogenizing module for homogenizing a beam, the homogenizing module comprising an anisotropic diffuser and a homogenizer, wherein:
the anisotropic diffuser is located on a transmission path of the beam, the beam has a first divergence angle in a first direction and a second divergence angle in a second direction after passing through the anisotropic diffuser, and the first divergence angle is greater than the second divergence angle; and
the homogenizer is located on a transmission path of the beam from the anisotropic diffuser, the homogenizer comprises a plurality of optical elements, and a size of one of the optical elements in the first direction is greater than a size of the one of the optical element in the second direction, wherein the first direction is perpendicular to the second direction.