Zhejiang University

Qijiang Mao

Jun Yin

Yang Li

Jianzhong Fu

Yifan Wang

A control method for digital light processing (DLP) printing based on an absorbance of a photocurable material includes: adding a light absorber to a photocurable material for DLP printing, measuring a liquid absorbance and a solid absorbance per unit thickness of the photocurable material at different concentrations of the light absorber, calculating an actual solid-liquid absorbance ratio, and comparing the ratio with a theoretically predicted value of a solid-liquid absorbance ratio to obtain an actual concentration of the light absorber in the photocurable material; measuring a curing threshold time of the photocurable material, substituting the solid absorbance per unit thickness, the liquid absorbance per unit thickness and the curing threshold time into a single-layer curing model to obtain a relationship between an exposure time tand a curing thickness H; this method can accurately obtain the exposure time corresponding to the thickness of any material that needs to be printed.

Growing community of inventors

Hangzhou, China

Qijiang Mao