Title:
IMAGING LENS
Document Type and Number:
Japanese Patent JP2022137586
Kind Code:
A
Abstract:
To provide an imaging lens having an excellent optical characteristic, while satisfying requirements for reduction in height and a small F number.SOLUTION: The imaging lens comprises a first lens having negative refractive power, a second lens having positive refractive power, a third lens having positive refractive power, a fourth lens having negative refractive power, a fifth lens having positive refractive power, and a sixth lens having negative refractive power, arranged in order from an object side to an image side. The first lens has a biconcave shape on a paraxial axis. The second lens has a convex surface on the object side on the paraxial axis. The fourth lens has a concave surface on the image side on the paraxial axis. The fifth lens has a convex surface on the object side on the paraxial axis. The sixth lens has a concave surface on the image side on the paraxial axis. The zoom lens satisfies a predetermined conditional expression.SELECTED DRAWING: Figure 1
Inventors:
KAMATA KENICHI
Application Number:
JP2021037130A
Publication Date:
September 22, 2022
Filing Date:
March 09, 2021
Export Citation:
Assignee:
TOKYO SHIMBI ELECTRON OPTICS CO LTD
International Classes:
G02B13/00
Attorney, Agent or Firm:
Shigenori Hayashi
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