Patent · US Active

Imaging lens and imaging apparatus equipped with the same

US9615008B2 · kind B2 · utility

7Cited by
3References
18Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJun 8, 2015
Grant dateApr 4, 2017
Priority date—
Expiry dateSep 18, 2035

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B13/04
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An imaging lens consists of a front group having a positive refractive power, a stop, and a rear group having a positive refractive power. The front group is composed of a front group negative lens group constituted by two or more negative lenses and a front group positive lens group constituted by a plurality of lenses with a positive lens being disposed on the most object side to have a positive refractive power, in order from the object side. The rear group includes at least one negative lens. When the Abbe number of the most object side positive lens in the front group positive lens group with respect to the d-line is taken as νp, the imaging lens satisfies a conditional expression (1): νp<30.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.