JPH0416407U - - Google Patents
Info
- Publication number
- JPH0416407U JPH0416407U JP5694690U JP5694690U JPH0416407U JP H0416407 U JPH0416407 U JP H0416407U JP 5694690 U JP5694690 U JP 5694690U JP 5694690 U JP5694690 U JP 5694690U JP H0416407 U JPH0416407 U JP H0416407U
- Authority
- JP
- Japan
- Prior art keywords
- lens barrel
- optical
- fixed lens
- ring
- fixed
- 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 9
- 239000000463 material Substances 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
Landscapes
- Focusing (AREA)
- Lens Barrels (AREA)
Description
第１図は本考案を適用したＣＣＴＶカメラ用レ
ンズ鏡胴の一実施例の側断面図、第２図はその要
部の拡大断面図であり、第３図は従来のヘリコイ
ド式レンズ鏡胴の側断面図である。
１……固定鏡胴、１ａ……マウントネジ、１ｂ
……インロー部、１ｃ……当付端面、１ｅ……キ
ー溝、１ｄ……受部端面、２……鏡筒、２Ａ……
ヘリコイドネジ（オスネジ）、２ｅ……キー部、
３……操作環、３Ａ……ヘリコイドネジ（メスネ
ジ）、３ｂ……インロー部、３ｃ……当付端面、
４……弾性部材、５……押え環。
Fig. 1 is a side sectional view of an embodiment of a CCTV camera lens barrel to which the present invention is applied, Fig. 2 is an enlarged sectional view of its main parts, and Fig. 3 is a conventional helicoid type lens barrel. FIG. 1...Fixed lens barrel, 1a...Mount screw, 1b
...Pilot part, 1c...Abutting end face, 1e...Keyway, 1d...Receiving part end face, 2... Lens barrel, 2A...
Helicoid screw (male screw), 2e...key part,
3... Operating ring, 3A... Helicoid screw (female thread), 3b... Pilot part, 3c... Abutting end surface,
4... Elastic member, 5... Presser ring.
Claims (1)
軸に沿つて移動させる機構を構成する操作環３と
、光学系を保持する鏡筒２と、光学機器本体への
取付部を有する固定鏡胴１と、操作環３を介在さ
せ鏡筒２と固定鏡胴１とで挟持した弾性部材４と
からなる合焦装置に於いて、鏡筒２と操作環３と
はヘリコイドネジにより螺合する構成を有すると
共に、操作環３と固定鏡胴１は固定鏡胴１に操作
環３が光軸方向に於いて当接した状態で回転自在
に嵌合し、更に固定鏡胴１と鏡筒２は光軸方向に
は移動可能で回転方向は規制するキーとキー溝の
関係で係合し、前記弾性部材４の反発力が常時、
ヘリコイドネジの螺合に関してガタ分を片寄せす
る方向に働くように成した事を特徴とする光学機
器用レンズ鏡胴の合焦装置。 (2) 実用新案登録請求の範囲(1)項記載の装置に
於いて固定鏡胴１、鏡筒２、操作環３を共に樹脂
材で構成した事を特徴とする光学機器用レンズ鏡
胴の合焦装置。[Claims for Utility Model Registration] (1) An operating ring 3 constituting a mechanism for moving an optical system along the optical axis in a lens barrel for optical equipment, a lens barrel 2 that holds the optical system, and an optical In a focusing device consisting of a fixed lens barrel 1 having an attachment portion to the main body of the device, and an elastic member 4 sandwiched between the lens barrel 2 and the fixed lens barrel 1 with an operation ring 3 interposed therebetween, the lens barrel 2 and the The ring 3 is configured to be screwed together with a helicoid screw, and the operating ring 3 and the fixed lens barrel 1 are rotatably fitted with the operating ring 3 in contact with the fixed lens barrel 1 in the optical axis direction. Furthermore, the fixed lens barrel 1 and the lens barrel 2 are movable in the optical axis direction and are engaged in a keyway relationship with a key that restricts the rotational direction, and the repulsive force of the elastic member 4 is always
A focusing device for a lens barrel for an optical device, characterized in that it works in a direction to offset play in connection with the screwing of a helicoid screw. (2) Scope of Utility Model Registration Claim (1) A lens barrel for optical equipment characterized in that the fixed lens barrel 1, lens barrel 2, and operation ring 3 are all made of resin material. Focusing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990056946U JP2566088Y2 (en) | 1990-05-30 | 1990-05-30 | Focusing device for lens barrel for optical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990056946U JP2566088Y2 (en) | 1990-05-30 | 1990-05-30 | Focusing device for lens barrel for optical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0416407U true JPH0416407U (en) | 1992-02-10 |
| JP2566088Y2 JP2566088Y2 (en) | 1998-03-25 |
Family
ID=31581223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990056946U Expired - Fee Related JP2566088Y2 (en) | 1990-05-30 | 1990-05-30 | Focusing device for lens barrel for optical equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2566088Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005208579A (en) * | 2003-12-24 | 2005-08-04 | Olympus Corp | Zoom lens barrel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS615218A (en) * | 1984-06-20 | 1986-01-11 | Hitachi Ltd | Zoom lens barrel |
| JPH026915A (en) * | 1988-06-27 | 1990-01-11 | Hitachi Ltd | Lens barrel |
-
1990
- 1990-05-30 JP JP1990056946U patent/JP2566088Y2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS615218A (en) * | 1984-06-20 | 1986-01-11 | Hitachi Ltd | Zoom lens barrel |
| JPH026915A (en) * | 1988-06-27 | 1990-01-11 | Hitachi Ltd | Lens barrel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005208579A (en) * | 2003-12-24 | 2005-08-04 | Olympus Corp | Zoom lens barrel |
| JP4575114B2 (en) * | 2003-12-24 | 2010-11-04 | オリンパス株式会社 | Zoom lens barrel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2566088Y2 (en) | 1998-03-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |