公开(公告)号：US20250050601A1

公开(公告)日：2025-02-13

申请号：US18926426

申请日：2024-10-25

Applicant: FUJIFILM Corporation

Inventor： Haruhiko MIYAMOTO ,  Hiroki SAITO ,  Nobuyuki IWAZAKI

IPC: B29D11/00 ,  G02B1/04 ,  G02B13/18

Abstract: An optical system includes a compound lens that includes a first lens and a second lens. The first lens is made of a resin, and the second lens is made of glass. In a case where a maximum value of a thickness of the first lens is denoted by A [mm] and a minimum value of the thickness of the first lens is denoted by B [mm], the optical system satisfies Conditional Expressions (1) and (2). A / B ≤ 10 ( 1 ) A ≤ 3 ⁢ mm ( 2 ) In a case where an amount of plastic deformation of the resin in a state where an indenter is pressed into the resin at a loading rate of 200 mN/10 sec at an environmental temperature of 25° C. is denoted by x [μm], the resin satisfies Conditional Expression (3). 1. μm ≤ x ≤ 4. μm ( 3 )