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. 21, 2020
Filed:
Dec. 25, 2018
Newmax Technology Co., Ltd., Taichung, TW;
NEWMAX TECHNOLOGY CO., LTD., Taichung, TW;
Abstract
Provided is a micro-distance lens detection device adapted to detect a tested lens with a surface from a micro distance. The micro-distance lens detection device includes a light source module, a diffuser, a pattern test card, a collimator unit and an image pickup module which are arranged sequentially. The tested lens is disposed between the pattern test card and the collimator unit. The surface of the tested lens is separated from the light-emitting side of the pattern test card by the micro distance. The micro distance is less than 25 mm. Given the micro distance between the tested lens and the pattern test card, the optical resolution modulation transfer function (MTF) of the tested lens is correctly measured. Therefore, the lens detection device takes up little space.