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. 17, 2020
Filed:
Jan. 28, 2019
Olympus Corporation, Hachioji, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
An information acquisition apparatus includes an illuminating section, an image forming optical system, and an image pickup element. The image forming optical system includes an incidence-side lens unit having a positive refractive power, an aperture section, and an emergence-side lens unit having a positive refractive power. The incidence-side lens unit and the emergence-side lens unit include a plurality of positive lenses and at least one negative lens, and the following conditional expressions (1) to (9) are satisfied:−6<β<−0.8  (1)−0.5<|<3.0  (2)−1.5<|<0.5  (3)0.001<|Δ<0.05  (4)0.04<|Δ<0.28  (5)3.5<|Δ|<38.0  (6)0<|Δ|<0.27  (7)0<|Δ|<0.16  (8)0<|Δ|<1.1  (9).