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US 2021/0341709 A1Published application
Imaging lens and imaging apparatus
AssigneeFUJIFILM Corporation
InventorsDaiki KAWAMURA, Michio CHO
Life of this patent
Estimating the term…
Abstract
An imaging lens includes, successively in order from a position closest to an object side, a positive first lens group that does not move during focusing, a stop, and a positive second lens group that moves during focusing. The second lens group consists of all lenses that integrally move during focusing. The imaging lens satisfies predetermined conditional expressions.
Claims49
An imaging lens comprising, successively in order from a position closest to an object side to an image side:
- a first lens group that remains stationary with respect to an image plane during focusing and has a positive refractive power;
- a stop;
- and a second lens group that moves during focusing and has a positive refractive power,
- wherein the second lens group consists of all lenses, which integrally move during focusing, among lenses which are disposed closer to the image side than the stop, and
- assuming that a maximum value of heights of a paraxial ray from an optical axis in the first lens group is H1max, in a case in which paraxial ray tracing is performed by causing the paraxial ray, of which a height from the optical axis on a lens surface closest to the object side in the first lens group is H1f, and which is parallel to the optical axis, to be incident from the object side, Conditional Expression (1) is satisfied, which is represented by
- 1.05<H1max/H1f<2 (1).
3 more elements
Dependencies are inferred from the claim text.