JPS63168414U - - Google Patents
Info
- Publication number
- JPS63168414U JPS63168414U JP6017787U JP6017787U JPS63168414U JP S63168414 U JPS63168414 U JP S63168414U JP 6017787 U JP6017787 U JP 6017787U JP 6017787 U JP6017787 U JP 6017787U JP S63168414 U JPS63168414 U JP S63168414U
- Authority
- JP
- Japan
- Prior art keywords
- lens barrel
- distance ring
- fixed
- helicoids
- optical system
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims 4
- 230000005540 biological transmission Effects 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Lens Barrels (AREA)
Description
第１図〜第３図は本考案の３実施例を示すそれ
ぞれ断面図である。
１：固定鏡筒、２：距離環、３：トラツキング
操作環、５：ダブルヘリコイド筒、６，９：連結
ピン、７：合焦レンズ、８：移動鏡筒。
1 to 3 are sectional views showing three embodiments of the present invention. 1: Fixed lens barrel, 2: Distance ring, 3: Tracking operation ring, 5: Double helicoid tube, 6, 9: Connecting pin, 7: Focusing lens, 8: Moving lens barrel.
Claims (1)
被写体側に固定焦点レンズ光学系を配置したテレ
ビカメラ用レンズ鏡筒において、 カメラ本体に対して固定され内周面にヘリコイ
ドが刻設された固定鏡筒と、 前記焦点調節レンズ光学系を保持し外周面にヘ
リコイドが刻設された移動鏡筒と、 前記両ヘリコイドと噛合するヘリコイドが内外
周面に刻設されたダブルヘリコイド筒と、 前記固定鏡筒の外周部に配設され焦点調節のた
めに操作される距離環と、 該距離環の回動を前記ダブルヘリコイド筒に伝
達する伝達手段と、 前記ダブルヘリコイド筒が回動するとき前記移
動鏡筒の回動を制限し、該移動鏡筒を光軸に沿つ
て直進せしめる直進手段と、 該直進手段の操作により前記ダブルヘリコイド
筒と前記距離環とを静止したまま前記移動鏡筒を
回動せしめて光軸方向に移動させるトラツキング
手段とを具備することを特徴とするテレビカメラ
用レンズ鏡筒。[Scope of claim for utility model registration] A focusing lens optical system on the lens mount side,
A lens barrel for a television camera in which a fixed focus lens optical system is arranged on the subject side, the fixed lens barrel is fixed to the camera body and has a helicoid engraved on its inner peripheral surface, and the focusing lens optical system is held. A movable lens barrel with helicoids carved on its outer circumferential surface; a double helicoid tube with helicoids carved on its inner and outer circumferential surfaces that mesh with both of the helicoids; and a double helicoid tube arranged on the outer circumference of the fixed lens barrel for focus adjustment. a distance ring that is operated to control the distance ring; a transmission means that transmits the rotation of the distance ring to the double helicoid tube; and a transmission means that limits the rotation of the movable lens barrel when the double helicoid tube rotates; and a tracking means that rotates the movable lens barrel and moves it in the optical axis direction while keeping the double helicoid tube and the distance ring stationary by operating the rectilinear means. A lens barrel for a television camera, characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6017787U JPS63168414U (en) | 1987-04-20 | 1987-04-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6017787U JPS63168414U (en) | 1987-04-20 | 1987-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63168414U true JPS63168414U (en) | 1988-11-02 |
Family
ID=30892357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6017787U Pending JPS63168414U (en) | 1987-04-20 | 1987-04-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63168414U (en) |
-
1987
- 1987-04-20 JP JP6017787U patent/JPS63168414U/ja active Pending
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