JP5038694B2 - 望遠撮影装置 - Google Patents
望遠撮影装置 Download PDFInfo
- Publication number
- JP5038694B2 JP5038694B2 JP2006323431A JP2006323431A JP5038694B2 JP 5038694 B2 JP5038694 B2 JP 5038694B2 JP 2006323431 A JP2006323431 A JP 2006323431A JP 2006323431 A JP2006323431 A JP 2006323431A JP 5038694 B2 JP5038694 B2 JP 5038694B2
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- JP
- Japan
- Prior art keywords
- lens
- lens group
- camera
- image
- telescope
- 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.)
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/142—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only
- G02B15/1421—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only the first group being positive
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/14—Mountings, adjusting means, or light-tight connections, for optical elements for lenses adapted to interchange lenses
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/48—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Astronomy & Astrophysics (AREA)
- Lenses (AREA)
- Accessories Of Cameras (AREA)
- Lens Barrels (AREA)
- Structure And Mechanism Of Cameras (AREA)
- Telescopes (AREA)
Description
対物レンズを備えた望遠鏡にアタッチメントを介してカメラを着脱自在に装着し被写体を撮影する望遠撮影装置であって、
前記対物レンズによる被写体の像をカメラの像面に結像させるべく、前記アタッチメント内部に、対物レンズ側に位置し正の屈折力を有する第1レンズ群とカメラ側に位置し正の屈折力を有する第2レンズ群から成り、第1レンズ群が固定され、第2レンズ群が光軸方向に移動されるよう構成されたレンズ系を設け、
前記レンズ系のうち前記第2レンズ群を光軸方向に移動させ、被写体を異なる倍率でかつ装着されたカメラの像面に結像させるとともに、前記第2レンズ群の移動による前記倍率調整範囲がピント変動が実用上問題とならない範囲に選ばれることを特徴とする。
1/a+1/b=1/f2
β=b/a=b/f2−1
合成焦点距離=f1×β=f1×(b/f2−1)となり、
例えば、a=50, b=100、f2=33.3(100/3)とすれば、
β1=100/(50)=2、合成焦点距離=2×f1となり、対物レンズの焦点距離が2倍に拡大される。
1/(a+Δa) +1/(b+Δb)= 1/f2 ・・・(1)
となる。ただし、Δa、Δbは図1(B)のa、bの矢印方向を正とする。
β2=(b+Δb)/(a+Δa)=3であるので、これを(1)に代入して、
Δb=33.3, Δa=−5.55とすれば、合成焦点距離=3×f1となり3倍に拡大される。
3a 第1レンズ群
3b 第2レンズ群
10 望遠鏡
11 対物レンズ
20 アタッチメント
21 第1レンズ群
22 第2レンズ群
23 鏡筒
24 ガイドピン
26 操作環
30 カメラ
31 撮像素子
Claims (1)
- 対物レンズを備えた望遠鏡にアタッチメントを介してカメラを着脱自在に装着し被写体を撮影する望遠撮影装置であって、
前記対物レンズによる被写体の像をカメラの像面に結像させるべく、前記アタッチメント内部に、対物レンズ側に位置し正の屈折力を有する第1レンズ群とカメラ側に位置し正の屈折力を有する第2レンズ群から成り、第1レンズ群が固定され、第2レンズ群が光軸方向に移動されるよう構成されたレンズ系を設け、
前記レンズ系のうち前記第2レンズ群を光軸方向に移動させ、被写体を異なる倍率でかつ装着されたカメラの像面に結像させるとともに、前記第2レンズ群の移動による前記倍率調整範囲がピント変動が実用上問題とならない範囲に選ばれることを特徴とする望遠撮影装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006323431A JP5038694B2 (ja) | 2006-11-30 | 2006-11-30 | 望遠撮影装置 |
PCT/JP2007/072280 WO2008065913A1 (fr) | 2006-11-30 | 2007-11-16 | Appareil téléphotographique |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006323431A JP5038694B2 (ja) | 2006-11-30 | 2006-11-30 | 望遠撮影装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008139404A JP2008139404A (ja) | 2008-06-19 |
JP5038694B2 true JP5038694B2 (ja) | 2012-10-03 |
Family
ID=39467705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006323431A Active JP5038694B2 (ja) | 2006-11-30 | 2006-11-30 | 望遠撮影装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP5038694B2 (ja) |
WO (1) | WO2008065913A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5245716B2 (ja) * | 2008-10-27 | 2013-07-24 | 株式会社ニコン | カメラレンズアダプタ及びカメラシステム |
DE102015102319B3 (de) * | 2015-02-18 | 2016-05-25 | Leica Camera Ag | Schnittweiten-Extender für teleskopische Abbildungssysteme |
JP6602186B2 (ja) * | 2015-11-30 | 2019-11-06 | キヤノン株式会社 | コンバータ装置及び撮像装置 |
CN109222886B (zh) * | 2018-11-16 | 2024-04-12 | 苏州巨目光学科技有限公司 | 可调屈光度调试眼 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03282509A (ja) * | 1990-03-30 | 1991-12-12 | Seiwa Seiki:Kk | 変倍式望遠鏡光学系 |
JPH04369978A (ja) * | 1991-06-19 | 1992-12-22 | Matsushita Electric Ind Co Ltd | 撮像装置 |
JP2003035866A (ja) * | 1993-12-28 | 2003-02-07 | Pentax Corp | リヤコン付き望遠鏡、そのリヤコンバージョンレンズ及び望遠鏡 |
JPH0933823A (ja) * | 1995-07-19 | 1997-02-07 | Asahi Optical Co Ltd | 写真撮影システム |
JPH0933796A (ja) * | 1995-07-20 | 1997-02-07 | Matsushita Electric Ind Co Ltd | 自動焦点調節装置及びカメラ |
JP3934975B2 (ja) * | 2002-03-29 | 2007-06-20 | 興和株式会社 | デジタルカメラ用アダプタ |
JP4227424B2 (ja) * | 2003-01-21 | 2009-02-18 | Hoya株式会社 | 変倍極軸望遠鏡 |
-
2006
- 2006-11-30 JP JP2006323431A patent/JP5038694B2/ja active Active
-
2007
- 2007-11-16 WO PCT/JP2007/072280 patent/WO2008065913A1/ja active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2008065913A1 (fr) | 2008-06-05 |
JP2008139404A (ja) | 2008-06-19 |
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