JPH043295Y2 - - Google Patents
Info
- Publication number
- JPH043295Y2 JPH043295Y2 JP1982017923U JP1792382U JPH043295Y2 JP H043295 Y2 JPH043295 Y2 JP H043295Y2 JP 1982017923 U JP1982017923 U JP 1982017923U JP 1792382 U JP1792382 U JP 1792382U JP H043295 Y2 JPH043295 Y2 JP H043295Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnification
- lens
- telescope
- tube
- variable magnification
- 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.)
- Expired
Links
- 239000004606 Fillers/Extenders Substances 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
Landscapes
- Telescopes (AREA)
Description
本考案は対物レンズの焦点距離を引伸して、眼
視、拡大写真の両用と引伸し倍率を可変とした倍
率可変チユーブを有する新規な天体望遠鏡に関す
るものである。
以下に、図示の実施例に基きその内容について
説明する。
１は対物レンズ２を有する望遠鏡筒体で射出光
側にエクステンダーレンズ（焦点引伸レンズ）３
を挿入配設してある。
このエクステンダーレンズ３は３群３枚構成で
特定光学システムの殆んどの機種の対物レンズに
合うように設計してあり、像面彎曲収差を略完全
近くに補正して広写野とし、色収差、球面収差も
高屈折低分散ガラスを採用して良好に補正すべく
なしてある。４は直径30.5mmのフイルター、５は
エクステンダーレンズ３に装着すべく成した延長
筒としての倍率可変チユーブで、表に示す如くそ
の使用個数によつて引伸し倍率をステツプ状に可
変することが出来るものである。
The present invention relates to a novel astronomical telescope that has a variable magnification tube that can be used for both visual observation and enlarged photography by enlarging the focal length of the objective lens and making the enlargement magnification variable. The contents will be explained below based on the illustrated embodiment. 1 is a telescope barrel having an objective lens 2, and an extender lens (focus enlarging lens) 3 on the exit light side.
has been inserted. This extender lens 3 has a three-element configuration in three groups and is designed to fit most types of objective lenses in specific optical systems. Spherical aberration is also well corrected by using high-refraction, low-dispersion glass. 4 is a filter with a diameter of 30.5 mm, and 5 is a variable magnification tube as an extension tube that is attached to the extender lens 3. As shown in the table, the enlargement magnification can be varied in steps depending on the number of tubes used. It is.
【表】
この倍率可変チユーブ５の追加装着で引伸し倍
率は理論的にはいくらでもアツプすることが出来
るが、実際の使用面でのバランスや使い易さ等を
考慮すると５倍位が限度である。
６はエクステンダー眼視アダプターで実質的に
は単なるリングであつて、前記した倍率可変チユ
ーブ５に装着するものである。７はアイピースア
ダプター、８はアイピースである。Ｐは光軸であ
つて通常はこの光軸Ｐ上に望遠鏡筒体１、フイル
ター８、エクステンダーレンズ３、倍率可変チユ
ーブ５、エクステンダー眼視アダプター６、アイ
ピースアダプター７、アイピース８が順次一体的
に結合されていて対象物の直視を行つている。
９は天頂プリズム（DP）で必要に応じて、ア
イピースアダプター７に装着して使用するもので
ある。
１０はOr40mmアイピースで必要に応じて使用
するものである。
１１は各種35mmカメラで、写真撮影を行う場合
は前記倍率可変チユーブ５の射出光側に各種カメ
ラマウント１２を介して35mmカメラ１１を装着す
ればよい。１３は市販されているカメラ用エクス
テンダーで例へばテレプラス（商品名）等であ
る。
次に、叙上の構成より成る本考案品の使い方に
ついて説明する。
対物レンズの焦点距離を引伸ばして倍率を高め
ようとする場合、表に示した如く予め用意した倍
率可変チユーブ５を適宜増やして順次装着すれば
よい。
然る時、倍率はステツプ状に可変されることと
なる。
而して、本考案は叙上の如き構成及び作用を有
するものであり、特に予め用意した複数の倍率可
変チユーブ５を順次増やして装着すれば倍率をス
テツプ状に高めることが出来るので、該倍率可変
チユーブ５の順次追加操作のみで引伸し倍率を理
論的にいくらでもアツプすることが低コストで且
つ簡易に出来る。[Table] Although the enlargement magnification can theoretically be increased as much as possible by adding the variable magnification tube 5, the maximum magnification is about 5 times in consideration of balance and ease of use in actual use. Reference numeral 6 denotes an extender visual adapter, which is essentially a simple ring and is attached to the variable magnification tube 5 described above. 7 is an eyepiece adapter, and 8 is an eyepiece. P is an optical axis, and normally, on this optical axis P, the telescope barrel 1, filter 8, extender lens 3, variable magnification tube 5, extender visual adapter 6, eyepiece adapter 7, and eyepiece 8 are integrally connected in order. and looking directly at the object. Reference numeral 9 denotes a zenith prism (DP) which is attached to the eyepiece adapter 7 as needed. 10 is an O r 40mm eyepiece that is used as necessary. Reference numeral 11 denotes various 35 mm cameras, and when taking photographs, the 35 mm camera 11 may be mounted on the exit light side of the variable magnification tube 5 via various camera mounts 12. 13 is a commercially available camera extender, such as Teleplus (trade name). Next, how to use the product of the present invention having the above configuration will be explained. When attempting to increase the magnification by extending the focal length of the objective lens, it is sufficient to appropriately increase the number of variable magnification tubes 5 prepared in advance as shown in the table and install them one after another. At that time, the magnification will be varied in steps. Therefore, the present invention has the above-mentioned configuration and operation, and in particular, the magnification can be increased in steps by sequentially increasing and installing a plurality of variable magnification tubes 5 prepared in advance. It is possible to theoretically increase the enlargement magnification as much as desired simply by sequentially adding operations to the variable tube 5 at low cost.
図面は本考案光学系の概略説明図である。
１……望遠鏡筒体、３……エクステンダーレン
ズ、５……倍率可変チユーブ、８……アイピー
ス。
The drawing is a schematic explanatory diagram of the optical system of the present invention. 1... Telescope barrel, 3... Extender lens, 5... Variable magnification tube, 8... Eyepiece.
Claims (1)
率可変チユーブ５を、望遠鏡筒体１に挿入配設し
たエクステンダーレンズ３の射出光側に順次増や
して装着することにより、該望遠鏡筒体１の対物
レンズ２の焦点距離を引伸ばしてステツプ状に倍
率を高めるように成した天体望遠鏡。 By sequentially mounting a plurality of variable magnification tubes 5 as hollow extension tubes prepared in advance on the exit light side of the extender lens 3 inserted into the telescope barrel 1, the objective of the telescope barrel 1 can be adjusted. An astronomical telescope that increases the magnification in steps by increasing the focal length of the lens 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1792382U JPS58121015U (en) | 1982-02-09 | 1982-02-09 | astronomical telescope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1792382U JPS58121015U (en) | 1982-02-09 | 1982-02-09 | astronomical telescope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58121015U JPS58121015U (en) | 1983-08-17 |
| JPH043295Y2 true JPH043295Y2 (en) | 1992-02-03 |
Family
ID=30030197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1792382U Granted JPS58121015U (en) | 1982-02-09 | 1982-02-09 | astronomical telescope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58121015U (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55164613U (en) * | 1979-05-15 | 1980-11-26 |
-
1982
- 1982-02-09 JP JP1792382U patent/JPS58121015U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58121015U (en) | 1983-08-17 |
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