US 11,809,071 B2
Wavelength conversion module and projector
Chia-Lun Tsai, Hsin-Chu (TW); and Shi-Wen Lin, Hsin-Chu (TW)
Assigned to Coretronic Corporation, Hsin-Chu (TW)
Filed by Coretronic Corporation, Hsin-Chu (TW)
Filed on May 13, 2022, as Appl. No. 17/743,478.
Claims priority of application No. 202121021582.3 (CN), filed on May 13, 2021.
Prior Publication US 2022/0365411 A1, Nov. 17, 2022
Int. Cl. G03B 21/20 (2006.01); G02B 26/00 (2006.01); G03B 21/16 (2006.01)
CPC G03B 21/204 (2013.01) [G02B 26/008 (2013.01); G03B 21/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wavelength conversion module, comprising a wavelength conversion wheel, a driving assembly, a plurality of thermal conductive adhesive structures, and a deflector, wherein
the wavelength conversion wheel comprises a rotatable disc and a wavelength conversion layer;
the driving assembly is connected to the rotatable disc of the wavelength conversion wheel to drive the wavelength conversion wheel to rotate along an axis of the driving assembly serving as a central axis;
the wavelength conversion layer and the thermal conductive adhesive structures are respectively located on two opposite sides of the rotatable disc, and the thermal conductive adhesive structures are arranged at intervals; and
the deflector is connected to the wavelength conversion wheel along the axis through the thermal conductive adhesive structures, wherein a plurality of heat dissipation channels are formed among the deflector, the rotatable disc and the thermal conductive adhesive structures, an air inlet is defined by each of the heat dissipation channels and the deflector near the axis, and an air outlet is defined between each of the heat dissipation channels and a periphery of the deflector, when the wavelength conversion wheel rotates, an airflow enters each of the heat dissipation channels from the air inlet and is discharged from the air outlet, wherein an area of the air inlet is larger than an area of the air outlet.