JPWO2021140989A5 - - Google Patents
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- Publication number
- JPWO2021140989A5 JPWO2021140989A5 JP2021570035A JP2021570035A JPWO2021140989A5 JP WO2021140989 A5 JPWO2021140989 A5 JP WO2021140989A5 JP 2021570035 A JP2021570035 A JP 2021570035A JP 2021570035 A JP2021570035 A JP 2021570035A JP WO2021140989 A5 JPWO2021140989 A5 JP WO2021140989A5
- Authority
- JP
- Japan
- Prior art keywords
- lens
- cam groove
- protrusion
- cylinder
- optical axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims 10
- 230000002093 peripheral effect Effects 0.000 claims 2
Claims (13)
前記第1カム溝に係合する第1突部と、第2カム溝と、を有する第2筒と、
光軸方向に沿った第1直進溝を有する第3筒と、
前記第2カム溝及び前記第1直進溝と係合する第2突部を有し、レンズを保持するレンズ保持枠と、
を備え、
前記第1筒は、撮影距離を変更すると回転するレンズ鏡筒。 a first cylinder having a first cam groove;
a second cylinder having a first protrusion that engages with the first cam groove and a second cam groove;
a third cylinder having a first rectilinear groove extending along the optical axis;
a lens holding frame that holds a lens and has a second protrusion that engages with the second cam groove and the first rectilinear groove;
with
The first barrel is a lens barrel that rotates when the shooting distance is changed .
請求項1に記載のレンズ鏡筒。 the first tube does not move in the optical axis direction with respect to the third tube,
The lens barrel according to claim 1 .
請求項1または請求項2に記載のレンズ鏡筒。 The second cylinder moves in the optical axis direction when the shooting distance is changed.
The lens barrel according to claim 1 or 2 .
請求項1から請求項3のいずれか1項に記載のレンズ鏡筒。 the second barrel is rotatable;
The lens barrel according to any one of claims 1 to 3 .
前記第2筒は、前記第3突部と係合する光軸方向に沿った第2直進溝を有する、
請求項1から請求項4のいずれか1項に記載のレンズ鏡筒。 Equipped with a rotating barrel that has a third protrusion and rotates when the focal length is changed,
The second cylinder has a second rectilinear groove along the optical axis direction that engages with the third projection,
The lens barrel according to any one of claims 1 to 4 .
請求項1から請求項5のいずれか1項に記載のレンズ鏡筒。 The third barrel is a fixed barrel,
The lens barrel according to any one of claims 1 to 5 .
前記第1筒は、前記第2筒より外周側に配置される、
請求項1から請求項6のいずれか1項に記載のレンズ鏡筒。 The second tube is arranged on the outer peripheral side of the third tube,
The first tube is arranged on the outer peripheral side of the second tube,
The lens barrel according to any one of claims 1 to 6 .
請求項1から請求項7のいずれか1項に記載のレンズ鏡筒。 the lens is a focus lens,
The lens barrel according to any one of claims 1 to 7 .
請求項8に記載のレンズ鏡筒。 The amount of movement of the lens in the optical axis direction when the focal length is changed from close to infinity while the focal length is on the telephoto side, and the above when the focal length is changed from close to infinity while the focal length is on the wide-angle side. Different from the amount of movement of the lens in the optical axis direction,
The lens barrel according to claim 8 .
請求項1から請求項9のいずれか1項に記載のレンズ鏡筒。 A position where the first protrusion engages with the first cam groove when the focal length is on the telephoto side, and a position where the first protrusion engages with the first cam groove when the focal length is on the wide-angle side. is different from
The lens barrel according to any one of claims 1 to 9 .
前記第4突部は、前記第1カム溝内に配置される、
請求項1から請求項10のいずれか1項に記載のレンズ鏡筒。 The second cylinder has a fourth protrusion for removing backlash,
The fourth protrusion is arranged in the first cam groove,
The lens barrel according to any one of claims 1 to 10 .
前記第1カム溝に係合する第1突部と、第2カム溝と、を有する第2筒と、
光軸方向に沿った第1直進溝を有する第3筒と、
前記第2カム溝及び前記第1直進溝と係合する第2突部を有し、レンズを保持するレンズ保持枠と、
を備え、
撮影距離を変更すると、前記第1筒は回転し、前記第2筒は光軸方向に移動し、前記レンズ保持枠は回転せずに光軸方向に移動する、
レンズ鏡筒。 a first cylinder having a first cam groove;
a second cylinder having a first protrusion that engages with the first cam groove and a second cam groove;
a third cylinder having a first rectilinear groove extending along the optical axis;
a lens holding frame that holds a lens and has a second protrusion that engages with the second cam groove and the first rectilinear groove;
with
When the shooting distance is changed, the first barrel rotates, the second barrel moves in the optical axis direction, and the lens holding frame moves in the optical axis direction without rotating.
lens barrel.
An optical instrument comprising the lens barrel according to any one of claims 1 to 12 .
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020000238 | 2020-01-06 | ||
JP2020000238 | 2020-01-06 | ||
PCT/JP2020/049133 WO2021140989A1 (en) | 2020-01-06 | 2020-12-28 | Lens barrel and optical apparatus |
Publications (3)
Publication Number | Publication Date |
---|---|
JPWO2021140989A1 JPWO2021140989A1 (en) | 2021-07-15 |
JPWO2021140989A5 true JPWO2021140989A5 (en) | 2022-08-19 |
JP7435630B2 JP7435630B2 (en) | 2024-02-21 |
Family
ID=76788033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021570035A Active JP7435630B2 (en) | 2020-01-06 | 2020-12-28 | Lens barrel and optical equipment |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP7435630B2 (en) |
WO (1) | WO2021140989A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5483842B2 (en) * | 2008-08-06 | 2014-05-07 | キヤノン株式会社 | Imaging device |
JP6293510B2 (en) * | 2014-02-10 | 2018-03-14 | リコーインダストリアルソリューションズ株式会社 | Zoom lens barrel |
JP6429506B2 (en) * | 2014-06-23 | 2018-11-28 | キヤノン株式会社 | Lens barrel and imaging device |
JP2019070758A (en) * | 2017-10-10 | 2019-05-09 | キヤノン株式会社 | Lens barrel and imaging device |
JP2019133113A (en) * | 2018-02-03 | 2019-08-08 | キヤノン株式会社 | Lens device |
-
2020
- 2020-12-28 JP JP2021570035A patent/JP7435630B2/en active Active
- 2020-12-28 WO PCT/JP2020/049133 patent/WO2021140989A1/en active Application Filing
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