Concave Diffraction Gratings by High-Precision Injection Moulding

Proceedings

Wörle, Alexander¹  Walch, Manuel² 

[1] Authors to whom correspondence should be addressed.;kdg opticomp GmbH, Am kdg campus, Dorf 91, 6652 Elbigenalp, Austria

关键词: high-precision injection moulding;    micro-;    submicro-;    nano-structure;    plastic grating;    concave;    curved surface;    nickel electroplating;   

DOI  :  10.3390/proceedings2130717

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

As an example of the applicable process chain, a concave grating (1175 grooves/mm) with an active area of approx. 24 mm to 24 mm has been replicated by means of electroplating and further by injection moulding with polycarbonate, resulting in a surface accuracy even below 4 µm peak-to-valley (PV). The obtained moulds were further metallised with bare aluminium to obtain components for optical applications. To our knowledge, this is the first time that such a large nanostructured nonplanar surface has been manufactured by injection moulding in such an accuracy.

【 授权许可】

CC BY