Zhejiang Institute of Metrology

Research on the design and characteristics of gap-type laminar flow modules based on small gas flow rates

Due to the numerous problems of traditional laminar flowmeters, such as poor linearity, complex processing and usage, and the susceptibility of component structures to fluid influence, a laminar flow generator based on a conical structure was designed. By adding cones on both sid...

Off-Axis Wavefront Measurement System for Aspheres Based on a Reflective SLM

Reflective SLMs are gaining increasing attention for aspherical surface testing due to their dynamic adjustability, fast operation, and high optical efficiency, offering clear advantages over costly CGH methods. This paper presents a wavefront measurement system that avoids the n...