The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 2023
Filed:
Oct. 04, 2021
Shenzhen Optiark Semiconductor Technologies Limited, Shenzhen, CN;
Tapani Kalervo Levola, Shenzhen, CN;
Houqiang Jiang, Shenzhen, CN;
Yisheng Zhu, Shenzhen, CN;
Yifan Zhu, Shenzhen, CN;
Shenzhen Optiark Semiconductor Technologies Limited, Shenzhen, CN;
Abstract
A diffractive beam expander device (EPE) includes a first spectral filter region (C) and a second spectral filter region (C) to provide a first optical route for blue and green light (B, G), and to provide a second optical router for red light (R). The expander device (EPE) includes a first Bragg grating region (BRG) to enhance optical absorption of red light (R) in the first spectral filter region (C). The expander device (EPE) includes a second Bragg grating region (BRG) to enhance optical absorption of blue light (B) in the second spectral filter region (C).