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:
Jul. 23, 2019
Filed:
Oct. 18, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Masao Hori, Utsunomiya, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is a zoom lens, including first to fourth lens units having positive, negative, positive, and positive refractive powers and a rear lens unit, which are arranged in order from object side to image side, in which: rear lens unit includes a negative front-side subunit and a positive rear-side subunit arranged in order from object side to image side; front-side subunit moves in a direction having a component perpendicular to optical axis; and front-side subunit includes at least one positive lens and at least one negative lens. A focal length of front-side subunit, a focal length of one positive lens of the at least one positive lens, a refractive index and an Abbe number of a material of the one positive lens, and a refractive index and an Abbe number of a material of one negative lens of the at least one negative lens are set appropriately.