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:
Apr. 08, 2025
Filed:
Dec. 06, 2024
Shenzhen Ned Optics Co., Ltd, Shenzhen, CN;
Shenzhen NED Optics Co., Ltd, Shenzhen, CN;
Abstract
The present invention relates to an eyepiece optical system and a head-mounted display device. The system includes a first lens group, a second lens group, a third lens group, and a fourth lens group arranged coaxially and sequentially in an optical axis direction from an observation side of human eyes to a micro-image display side, wherein the first lens group has a positive effective focal length and is composed of a first lens close to a human eye side and a second lens away from the human eye side, the second lens group has a negative effective focal length and is composed of a third lens and a fourth lens, the third lens group has a positive effective focal length and is composed of a fifth lens, and the fourth lens group is composed of a sixth lens and a seventh lens. The system is suitable for head-mounted displays.