Image pickup lens and image pickup apparatus including the same
US9116330B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 2014 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Mar 19, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image pickup lens includes, in order from an object side; a negative front lens unit; a stop; and a positive rear lens unit, wherein the front lens unit includes a negative front first lens, a negative front second lens, and a positive front third lens, in order from the object side, wherein the rear lens unit includes a positive rear first lens having at least one aspherical surface and a cemented lens made up of a positive rear second lens and a negative rear third lens, in order from the object side, and wherein an Abbe constant of a positive lens disposed on the most object side, an Abbe constant of a negative lens disposed on the most image side, a focal length of the front lens unit, and a focal length of the rear lens unit are appropriately set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.