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:
Feb. 13, 2024
Filed:
Jun. 16, 2022
Method for out-coupling grating for ar optical waveguide, and design method for ar optical waveguide
Jiaxing Uphoton Optoelectronics Technology Co., Ltd., Jiaxing, CN;
Xingming Zhao, Jiaxing, CN;
Zhentao Fan, Jiaxing, CN;
Qingfeng Zhu, Jiaxing, CN;
Lei Sui, Jiaxing, CN;
Kehan Tian, Jiaxing, CN;
JIAXING UPHOTON OPTOELECTRONICS TECHNOLOGY CO., LTD., Tongxiang, CN;
Abstract
The disclosure provides a design method of a coupling-out grating and the design method including: calculating a diffraction coupling-in angle, at which a light beam is diffracted and coupled into the optical waveguide body through the coupling-in grating, according to an angle at which the light beam is incident to the coupling-in grating, a wavelength of the light beam and a grating period of the coupling-in grating; calculating a distance between two adjacent coupling-out positions of the light beam; calculating a brightness difference rate of the light beam after being coupled out multiple times through the coupling-out grating according to the maximum diffraction efficiency of the coupling-out grating; and calculating the number of partitions of the coupling-out grating according to a length of the coupling-out grating, a sensitivity of a human eye to the light beam, the brightness difference rate, and the distance between the two adjacent coupling-out positions.