JPS59187311A - Telescope attachment for interchangeable lens - Google Patents
Telescope attachment for interchangeable lensInfo
- Publication number
- JPS59187311A JPS59187311A JP3989184A JP3989184A JPS59187311A JP S59187311 A JPS59187311 A JP S59187311A JP 3989184 A JP3989184 A JP 3989184A JP 3989184 A JP3989184 A JP 3989184A JP S59187311 A JPS59187311 A JP S59187311A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- interchangeable lens
- direct viewing
- prism
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
Abstract
Description
【発明の詳細な説明】
本発明は一眼レフカメラ用交換レンズを望遠鏡に転用す
るためのアタッチメントに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an attachment for converting an interchangeable lens for a single-lens reflex camera into a telescope.
従来の型は第１図に示すように一眼レフカメラ用交換レ
ンズ１の後方に配置される単一な直角ダハプリズム２と
アイピースレンズ３よりなる曲視型であるが、観察目標
を捕えにくいという欠点があった。この欠点を解消する
ために直視型に構成したものが本発明である。As shown in Fig. 1, the conventional type is a curved view type consisting of a single right-angle roof prism 2 and an eyepiece lens 3 placed behind an interchangeable lens 1 for a single-lens reflex camera, but it has the disadvantage that it is difficult to capture the observation target. was there. In order to eliminate this drawback, the present invention is configured to be of a direct view type.
本発明の特徴は、−眼レフカメラ用交換レンズのカメラ
取付部に着脱自在に取付は得て同軸直視型王立プリズム
を受光窓口とし背後にアイピースレンズを配したアタッ
チメント装置にある。その交換レンズへの取付部はねし
込み型、バヨネッ１−型等各種であるが目標交換レンズ
に適合させるものである。その同軸直視型正立プリズム
は２個の三角プリズムを主光軸上に乗せてＺ形に積重ね
各端面が主光軸に垂直であり一方の第３面が屋根形であ
り、入射光が直視正立像を結ぶように反射をして出射す
る。また、そのアイピースレンズを配置
設したアイピースは一栗型でよく当然視度調整伺のもの
も含まれる。The present invention is characterized by an attachment device which is removably attached to the camera attachment part of an interchangeable lens for an eye reflex camera and has a coaxial direct-viewing royal prism as a light receiving window and an eyepiece lens arranged behind it. The mounting portion for the interchangeable lens may be of various types, such as a push-in type or a bayonet type, but it is adapted to the target interchangeable lens. The coaxial direct-view erecting prism consists of two triangular prisms placed on the main optical axis and stacked in a Z shape, each end face being perpendicular to the main optical axis and the third face being roof-shaped, so that the incident light can be seen directly. It is reflected and emitted to form an erect image. Furthermore, the eyepiece in which the eyepiece lens is arranged may be a chestnut-shaped eyepiece, and of course, it also includes one with diopter adjustment.
第２図に前記正立プリズムの光路長より交換レンズのフ
ランジバックが短い場合の本発明一実施例を示す。FIG. 2 shows an embodiment of the present invention in which the flange back of the interchangeable lens is shorter than the optical path length of the erecting prism.
この場合、交換レンズ１を通過した光線が同軸直視型正
立プリズム４中で結像するという不都合を防ぐために該
正立プリズム４と前記交換レンズ１との間に負屈折力の
補償レンズ５を介在させてバック補償をしである。In this case, in order to prevent the inconvenience that the light beam passing through the interchangeable lens 1 forms an image in the coaxial direct-viewing erecting prism 4, a compensating lens 5 with a negative refractive power is provided between the erecting prism 4 and the interchangeable lens 1. This is done through intervening back compensation.
斯くして本発明は交換レンズに対する目標を捕え易い同
軸直視正立型のコンパクトな望遠鏡用アタッチメントが
得られるものである。Thus, the present invention provides a compact coaxial direct-viewing erect type telescope attachment that can easily capture a target for an interchangeable lens.
第１図は交換レンズを対物レンズとして使用する望遠鏡
の従来の状態図、第２図は補償レンズを付加した場合の
本発明の構成図である。
１・・・−眼レフカメラ用交換レンズ
３・・アイピースレンズ
４・・・同軸直視正立プリズム
５・・・補償レンズ
ネ２圀FIG. 1 is a state diagram of a conventional telescope that uses an interchangeable lens as an objective lens, and FIG. 2 is a configuration diagram of the present invention when a compensation lens is added. 1... - Interchangeable lens for eye reflex camera 3... Eyepiece lens 4... Coaxial direct viewing erecting prism 5... Compensation lens 2 circles
Claims (1)
脱交換自在に取付けて同軸直視型の望遠鏡と成し得るよ
うに着脱マウン１〜を持ち直視正立型の受光プリズムと
その背後のアイピースレンズとを装置した望遠鏡用アタ
ッチメン１〜。It has a removable mount 1 which is engraved on the camera mounting part of an interchangeable lens for a single-lens reflex camera and is detachably attached to create a coaxial direct-viewing telescope.It has a direct-viewing erect light-receiving prism and an eyepiece lens behind it. Attachment for telescope 1~ equipped with and.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3989184A JPS59187311A (en) | 1984-03-01 | 1984-03-01 | Telescope attachment for interchangeable lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3989184A JPS59187311A (en) | 1984-03-01 | 1984-03-01 | Telescope attachment for interchangeable lens |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7392878A Division JPS552215A (en) | 1978-06-19 | 1978-06-19 | Optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59187311A true JPS59187311A (en) | 1984-10-24 |
Family
ID=12565588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3989184A Pending JPS59187311A (en) | 1984-03-01 | 1984-03-01 | Telescope attachment for interchangeable lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59187311A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4867549A (en) * | 1987-05-08 | 1989-09-19 | Nikon Corporation | Re-imaging optical system |
| US5923467A (en) * | 1991-11-28 | 1999-07-13 | The University Of Melbourne | Binocular bent-axis loupes |
| US20120069432A1 (en) * | 2010-09-18 | 2012-03-22 | Tonta Electro Optical Co., Ltd. | Optical device for coupling to a camera lens to form a visual observation system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS505058A (en) * | 1973-05-12 | 1975-01-20 |
-
1984
- 1984-03-01 JP JP3989184A patent/JPS59187311A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS505058A (en) * | 1973-05-12 | 1975-01-20 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4867549A (en) * | 1987-05-08 | 1989-09-19 | Nikon Corporation | Re-imaging optical system |
| US5923467A (en) * | 1991-11-28 | 1999-07-13 | The University Of Melbourne | Binocular bent-axis loupes |
| US20120069432A1 (en) * | 2010-09-18 | 2012-03-22 | Tonta Electro Optical Co., Ltd. | Optical device for coupling to a camera lens to form a visual observation system |
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