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:
May. 25, 2021
Filed:
Aug. 31, 2017
Nanophoton Corporation, Osaka, JP;
Minoru Kobayashi, Osaka, JP;
NANOPHOTON CORPORATION, Osaka, JP;
Abstract
An objective lens according to an aspect of the present disclosure includes a first element having a first surface to a fourth surface and a second element having a first planar surface and a second planar surface and being located on the specimen-side of the first element. The first surface is a transmissive planar surface located on the optical axis, the second surface is a reflective convex surface located on the optical axis, the third surface is a reflective concave surface located on the outer side of the first surface, and the fourth surface is a transmissive planar surface located on the outer side of the second surface. The first planar surface is a transmissive planar surface to be joined to the fourth surface and the second planar surface is a transmissive planar surface parallel to the first planar surface.