US 11,988,949 B2
Wavelength conversion element and projection apparatus
Chih-Ming Chen, Hsin-Chu (TW)
Assigned to Coretronic Corporation, Hsin-Chu (TW)
Filed by Coretronic Corporation, Hsin-Chu (TW)
Filed on Nov. 23, 2021, as Appl. No. 17/533,152.
Claims priority of application No. 202011370151.8 (CN), filed on Nov. 30, 2020.
Prior Publication US 2022/0171269 A1, Jun. 2, 2022
Int. Cl. G03B 21/20 (2006.01); G02B 26/00 (2006.01)
CPC G03B 21/204 (2013.01) [G02B 26/008 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A wavelength conversion element, comprising a substrate, a reinforcement plate, an adhesive layer, a wavelength conversion layer and a motor, wherein:
the substrate has a first engaging portion;
the reinforcement plate is connected to the substrate and has a second engaging portion, and the second engaging portion is correspondingly jointed with the first engaging portion;
the adhesive layer is connected between the substrate and the reinforcement plate and is disposed between the first engaging portion and the second engaging portion; and
the wavelength conversion layer is disposed on the substrate,
wherein the substrate and the reinforcement plate are ring-shaped and are sleeved on a shaft of the motor,
wherein the reinforcement plate is fixed on the motor,
wherein a rigidity of the reinforcement plate is greater than a rigidity of the substrate, and
wherein the reinforcement plate is not in direct contact with the wavelength conversion layer.