Title:
LENS UNIT
Document Type and Number:
Japanese Patent JP2023149436
Kind Code:
A
Abstract:
To provide a lens unit capable of independently performing a process of holding a first lens in a lens barrel and a process of holding a lens group positioned in an image side of the first lens in the lens barrel.SOLUTION: A lens unit 1 includes: a first lens barrel member 21 for holding a first lens 2; and a second lens barrel member 22 for holding a lens group 4. The first lens barrel member 21 has: a first cylindrical part 25 having a holding part 27 for holding the first lens 2 from an outer peripheral side; and an annular projection 26 projecting from the first cylindrical part 25 to the inner peripheral side. The annular projection 26 has a first lens support part 31 for supporting the first lens 2 from an image side X1. The second lens barrel member 22 has: a second cylindrical part 50 for surrounding the lens group 4 from the outer peripheral side; and a flange part 51 projecting from the second cylindrical part 50 to the outer peripheral side. The second lens barrel member 22 is positioned in a diametric direction when the second cylindrical part 50 is inserted into the inner peripheral side of the annular projection 36, and is positioned in a light axis direction X when the flange part 51 abuts on the annular projection 36.SELECTED DRAWING: Figure 2
Inventors:
NAKAJIMA TOMOAKI
Application Number:
JP2022058012A
Publication Date:
October 13, 2023
Filing Date:
March 31, 2022
Export Citation:
Assignee:
NIDEC INSTR CORP
International Classes:
G02B7/02; G03B15/00; G03B30/00
Attorney, Agent or Firm:
Toru Kawai
Nobuko Kawaguchi
Yuji Iwadare
Nobuko Kawaguchi
Yuji Iwadare