Light modulating device and spectral detection system

US10697831B2 · kind B2 · utility

Assignee

• BOE Technology Group Co., Ltd. · CN

Inventors

• Xiandong Meng · Beijing, CN
• Xianqin Meng · Beijing, CN
• Wei Wang · Beijing, CN
• Jifeng Tan · Beijing, CN
• Fangzhou Wang · Beijing, CN
• Qiuyu Ling · Beijing, CN
• Xiaochuan Chen · Beijing, CN
• Jian Gao · Singapore, SG

Key dates

• Filing date: Jun 21, 2019
• Grant date: Jun 30, 2020
• Expiry date: Jun 21, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G01J2003/1861
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A light modulating device includes a dispersion assembly and a lens assembly, the dispersion assembly is configured to disperse light emitting from a light source into dispersed light which at least includes collimated monochromatic light and non-collimated monochromatic light; the lens assembly includes: at least a first lens component; at least a second lens component disposed in a one-to-one correspondence with the first lens component; a first absorbing layer disposed between the first lens component and the second lens component, the first absorbing layer has an opening, a focus point of the first lens component towards the first absorbing layer coincides with a focus point of the second lens component towards the first absorbing layer, the opening is disposed at the coincident focus point of the first lens component and the second lens component.