In this paper, the working concept of the light engine is described and the optical performance has been evaluated with the simulation using ray tracing program, which shows a good uniformity for projector application.

Improving of optical polishing machine based on fuzzy control;

According to the analysis of the structure of polishing pad,polishing machine and polishing slurry,the merits of fixed abrasives (FA)CMP were presented.

The tradition optical lens polishing machine existence main axle swinging inertia is big, the rack easy to have the vibration, the complete machine stability inferior serious influence product precision question.

In this paper,research progress in the luminescence mechanism,preparation and luminescence characters of nano-ZnO luminescence materials are summarized.

The absorption spectra,infrared(IR) absorption spectra and upconversion fluorescence spectra of a series of Er~(3+)/Yb~(3+)-codoped 46Bi_2O_3-44GeO_2-10Na_2O((B_(46)G_(44)N_(10))) glasses were investigated,and upconversion luminescence mechanisms of Yb~(3+) sensitize Er~(3+) were analyzed.

Research on the technology for preparing nano-crystal silicon, microstructure and luminescence mechanism of nano-crystal silicon has attracted much attention.

Meanwhile, the phosphorescent mechanism and current situation preparation method of sulfide, titanate and oxysulfid hosts were summarized.