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:
Nov. 02, 2021
Filed:
Apr. 02, 2018
Jiangxi Lianyi Optics Co., Ltd., Nanchang, CN;
JIANGXI LIANYI OPTICS CO., LTD., Nanchang, CN;
Abstract
The disclosure provides a collimating lens. In order from a laser transmitter side to a to-be-measured object side, the collimating lens includes a first lens, a second lens, a third lens and an aperture stop. The first lens is a lens with positive power and includes a convex object side surface. The second lens is a lens having negative power and includes a concave object side surface. The third lens is a lens having positive power and includes a convex image side surface. The change rate of the refractive index of the first lens with temperature in the range of 0 to 60° C. satisfies that (dn/dt)1>−10×10/° C. So, the aging of the lens can be effectively delayed. With the same size laser transmitter, the focal length of the system is larger, the field of view angle is smaller.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile