# US 2025/0085504 A1 · Lens barrel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0085504 A1 - Document ID: US20250085504A1 - Status: Published application - Kind: A1 - Application number: 18/815,828 - Filed: 2024-08-26 - Published: 2025-03-13 - Earliest claimed: 2023-09-11 - Assignees: FUJIFILM Corporation - Applicants: FUJIFILM Corporation - Inventors: Masahiro HIDESHIMA; Mitsuhiko OKA - Web page: https://patentgrep.com/patent/US20250085504A1 ## CPC - G02B 7/023: {permitting adjustment} - G02B 7/021: {for more than one lens} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract The lens barrel includes a first frame, a second frame that holds a lens positioned closest to an object side, that is accommodated in the first frame, and of which a position and/or a degree of inclination is adjustable with respect to the first frame, and a third frame that is attached to the first frame and that is disposed between an inner periphery of the first frame and an outer periphery of the second frame as seen from the object side. In the lens barrel, a first portion of the second frame that is positioned closest to the object side in an optical axis direction is disposed between a second portion of the third frame that is positioned closest to the object side and a third portion of the third frame that is positioned closest to an image side. ## Claims ### Claim 1 A lens barrel comprising: a first frame; a second frame that holds a lens positioned closest to an object side, that is accommodated in the first frame, and of which a position and/or a degree of inclination is adjustable with respect to the first frame; and a third frame that is attached to the first frame and that is disposed between an inner periphery of the first frame and an outer periphery of the second frame as seen from the object side, wherein a first portion of the second frame that is positioned closest to the object side in an optical axis direction is disposed between a second portion of the third frame that is positioned closest to the object side and a third portion of the third frame that is positioned closest to an image side. ### Claim 2 (depends on 1) The lens barrel according to claim 1, wherein the first portion is positioned at a position closer to the image side than the second portion is by a distance equal to or greater than a distance δ. ### Claim 3 (depends on 2) The lens barrel according to claim 2, wherein a value that exceeds a maximum amount of displacement of the first portion in the optical axis direction that is caused due to the adjustment is set as the distance δ. ### Claim 4 (depends on 1) The lens barrel according to claim 1, wherein the first portion is positioned at a position closer to the image side than the second portion is by a distance equal to or greater than a distance ξ in a case where the position and/or the degree of inclination of the second frame is adjusted by a maximum adjustment amount. ### Claim 5 (depends on 4) The lens barrel according to claim 4, wherein the distance ξ is 0.3 mm. ### Claim 6 (depends on 1) The lens barrel according to claim 1, wherein the third frame includes an annular recess portion provided at an inner peripheral portion as seen from the object side, and the first portion is positioned closer to the object side than a fourth portion of the recess portion that is positioned closest to the image side. ### Claim 7 (depends on 1) The lens barrel according to claim 1, wherein the third frame includes an annular projection portion provided at an inner peripheral portion of an end surface on the object side. ### Claim 8 (depends on 7) The lens barrel according to claim 7, wherein the projection portion of the third frame has a tapered shape of which a diameter decreases toward the object side. ### Claim 9 (depends on 8) The lens barrel according to claim 8, wherein an end portion of the second frame that is on the object side has a tapered shape of which a diameter decreases toward the image side. ### Claim 10 (depends on 7) The lens barrel according to claim 7, wherein the projection portion of the third frame has a stepped shape of which a diameter decreases toward the object side in a stepwise manner. ### Claim 11 (depends on 10) The lens barrel according to claim 10, wherein an end portion of the second frame that is on the object side has a stepped shape of which a diameter decreases toward the image side in a stepwise manner. ### Claim 12 (depends on 1) The lens barrel according to claim 1, wherein the second frame includes the first portion provided at a portion adjacent to an inner periphery of the third frame as seen from the object side. ### Claim 13 (depends on 1) The lens barrel according to claim 1, wherein the first portion and the second portion are disposed to be adjacent to each other as seen from the object side. ### Claim 14 (depends on 1) The lens barrel according to claim 1, wherein the first portion and the second portion have the same hue. ### Claim 15 (depends on 14) The lens barrel according to claim 14, wherein Munsell chroma values of the first portion and the second portion are equal to or smaller than a threshold value. ### Claim 16 (depends on 14) The lens barrel according to claim 14, wherein a hue difference related to a hue ring in Munsell color system between the first portion and the second portion is equal to or smaller than a threshold value. ### Claim 17 (depends on 14) The lens barrel according to claim 14, wherein lightness of the first portion and the second portion of the second frame and the third frame is relatively high. ### Claim 18 (depends on 14) The lens barrel according to claim 14, wherein lightness of the first portion and the second portion is relatively higher than lightness of an outer peripheral surface of the second frame and lightness of an inner peripheral surface of the third frame. ### Claim 19 (depends on 1) The lens barrel according to claim 1, wherein the third frame is a nameplate.