No abstract

ITRI/OES has developed a system for the measurements of LCoS systems. This equipment is designed to be an experimental toolkit for the study of different optical elements under different configurations and environments. Using this apparatus we performs several thermal experiments on a PBS. The experimental results indicate that the thermal effects on the PBS are conspicuous. An optimal working temperature is required for the PBS to get a good image quality. Experiments on stress birefringence effects of the PBS are also made.

No abstract

Lamp cooling is a critical problem for thermal design in a projection system. In the present study, numerical simulations of temperature and stress of a HID lamp are performed under real situation in a projector. The velocity fields of cooling air and temperature distribution of reflector and quartz tube were calculated first. After that, the temperature distribution was mapped to a finite element mesh with the same geometrical model. And then, the stress field was calculated.