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:
Sep. 30, 2025
Filed:
Jun. 29, 2023
Shenzhen Nade Optical Co., Ltd., Guangdong, CN;
SHENZHEN NADE OPTICAL CO., LTD., Shenzhen, CN;
Abstract
A diopter-adjustable eyepiece optical system and a head-mounted display device. The eyepiece optical system comprises a first lens group (T), a second lens group (T), and a third lens group (T) which are sequentially arranged from a human eye (EYE) observation side to a micro image display (IMG) in an optical axis direction; the effective focal length of the first lens group (T) is a positive value; the effective focal length of the second lens group (T) is a negative value; and an optical surface (), close to the micro image display (IMG), in the third lens group (T) protrudes towards a direction of the micro image display (IMG). The first lens group (T) is fixed relative to human eyes (EYE); the second lens group (T) and the third lens group (T) move towards a direction of the human eyes (EYE) along the optical axis.