The purpose of our research is to install the handrail in the sliding doors used in hospitals and nursing facilities to support the senior and handicapped persons to walk by themselves. The semi-automatic lifting equipment is utilized for the storable handrail to make sure the bad health persons are able to open the door using a weak force. In this study, by considering equipment of the handrail, the theoretical formula of opening force is derived. Then the simulation is performed with varying geometry conditions and the results are compared with the experiment results.

A method is developed for designing a laser beam shaper that converts intensity distribution. The shaper is fabricated using an asymmetric refracting surface and converts a Gaussian beam to a homogeneous line beam that heats a material surface uniformly through beam scanning. Applying the behavior of charged particles to optical elements, the form of the shaper is designed using iterative calculations under the condition of no optical path crossing. The shaper is fabricated on a fused silica plate using computer numerical controlled milling machine and a ball style grinding tool with a small diameter, and finished by coating with silicone oil. This shaper generates a line intensity of 4 mm by 0.7 mm from a Gaussian laser beam. Uniform heating performance is tested. A groove with a flat bottom is obtained using the shaper.