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:
Jan. 22, 2019
Filed:
Mar. 22, 2017
Young Optics Inc., Hsinchu, TW;
Young Optics Inc., Hsinchu, TW;
Abstract
A telecentric lens including a first lens group, an aperture stop, and a second lens group arranged in order from a magnified side to a minified side is provided. The first lens group has an outmost lens facing the magnified side, and the second lens group has an outmost lens facing the minified side. At least one of the outmost lens of the first lens group and the outmost lens of the second lens group is formed of glass. At least one of the first lens group and the second lens group has a lens having negative refractive power and being composed of plurality of lenses being mutually contacted to each other. The condition: TTL<100 mm is satisfied, wherein TTL denotes a length measured along an optical axis and between two outmost opposite lens surfaces of the telecentric lens.