One of the important roles of real-time

high-resolution volumetric three-dimensional imaging is a projection space

which is steady and unique

so a novel system of double-helical sweep screen was proposed

which rotating together with the shaft was droved by motor

after characteristics of projection spaces created by swepte volume and static volume techniques were compared and analyzed. The design scheme of screen structure used high strength photosensitive translucent resin material

supporting wall

rapid prototyping and direct digital manufacturing. The three dimension model of helical sweep screen is made by SolidWorks software and the dynamic testing by the COSMOSWorks module. The simulation results showed that the maximum displacement of screen rotating at 600rpm is 0.013mm which is far less than visual resolution range for realistic image synthesis

so projection space based on helical sweep screen could match imaging requirements. Finally

the system platform was built on the base of the existing engineering and technological level. Experience results showed that the platform could produce a steady projection space (25cm×Ф50cm)

and supply excellent volumetric three-dimensional images.