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. 26, 2019
Filed:
Nov. 28, 2014
Han's Laser Technology Industry Group Co., Ltd., Shenzhen, Guangdong, CN;
Bo Sun, Shenzhen, CN;
Jiaying Li, Shenzhen, CN;
Chaoming Zhou, Shenzhen, CN;
Yuqing Chen, Shenzhen, CN;
Yunfeng Gao, Shenzhen, CN;
HAN'S LASER TECHNOLOGY INDUSTRY GROUP CO., LTD., Shenzhen, CN;
Abstract
An optical lens for laser marking includes a first lens (L), a second lens (L), and a third lens (L), which are successively coaxially arranged along a transmission direction of incident light, wherein the first lens (L) and the second lens (L) are meniscus lenses, and the third lens (L) is a biconvex lens; wherein the first lens (L) has a first surface (S) and a second surface (S), the second lens (L) has a third surface (S) and a fourth surface (S), the third lens (L) has a fifth surface (S) and a sixth surface (S); the first surface (S) to the sixth surface (S) are successively arranged along the transmission direction of the incident light; wherein radii of curvature of the first surface to the sixth surface are −47±5% mm, ∞, −218±5% mm, −81±5% mm, 778±5% mm, and −142±5% mm, respectively; wherein central thicknesses of the first lens, the second lens, and the third lens are 4±5% mm, 15±5% mm, and 18±5% mm, respectively. The optical lens for laser marking not only has high engraving quality, but also has a high engraving speed with a higher efficiency than conventional engraving lens.