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. 22, 2024
Filed:
May. 16, 2024
Jiaxing Uphoton Optoelectronics Technology Co., Ltd., Jiaxing, CN;
Jiaxing UPhoton Optoelectronics Technology Co., Ltd., Tongxiang, CN;
Abstract
An optical waveguide and a display device are provided. The optical waveguide includes a waveguide substrate causing light to propagate within it through total internal reflection and at least one grating disposed between and inclined with respect to the first and second surfaces of the waveguide substrate for transmitting and reflecting incident light or for transmitting and diffractively deflecting incident light. The transmitted light is coupled into the waveguide substrate to propagate within it through total internal reflection, and the reflected or diffractively deflected light is coupled out from the waveguide substrate. The grating is configured such that the reflection efficiency or diffraction deflection efficiency when an incidence angle is less than a first angle and greater than a fourth angle is greater than that when the incidence angle is greater than the first angle, wherein the first angle is greater than the fourth angle.