The novel optical diffusers based on the fillers of boehmite hollow microspheres

Abstract

The novel optical diffusers based on boehmite (γ-AlOOH) hollow microspheres were successfully prepared by solvent-free UV curing process. The optical properties of the novel diffusers were also measured for the first time. Boehmite hollow microspheres had been synthesized via high efficient and facile hydrothermal synthesis method. The microscope analysis revealed that the boehmite hollow microspheres were about 5μm in diameter and with a shell thickness of approximately 1.6μm. The novel diffuser based on the fillers of boehmite hollow microspheres possessed suitable light transmittance, good diffusion capacity, and low incident angle dependence, which were critical and necessary for excellent optical diffusers. Thus, boehmite hollow microspheres were quite suited to being as optical fillers and such microspheres can be widely used for preparing different multifunctional diffusion materials such as touch-panel functions, monitors, military projectors, night vision LCD, etc.