公开(公告)号：US20180172483A1

公开(公告)日：2018-06-21

申请号：US15127660

申请日：2015-03-18

Applicant: Heptagon Micro Optics Pte. Ltd.

Inventor： Jens GEIGER ,  Nicola SPRING ,  Robert LENART ,  Bassam HALLAL ,  Hakan KARPUZ

IPC: G01D5/347

CPC classification number: G01D5/3473 ,  G01D5/342 ,  G01D5/34707 ,  G01D5/34715

Abstract: Optical encoding systems include a generalized cylindrical code scale having one or more regions with different light reflective properties. In an example process, a code scale can be created by coating an elongated generalized cylinder with one or more different layers of materials having different light reflective properties. Portions of these layers can be removed selectively in order to expose a particular overlying material and create a particular pattern of features having different optical characteristics (e.g., absorbing, specularly reflecting, diffusely reflecting).