JPH04115211A - Optical mechanism of image pickup device - Google Patents
Optical mechanism of image pickup deviceInfo
- Publication number
- JPH04115211A JPH04115211A JP2235098A JP23509890A JPH04115211A JP H04115211 A JPH04115211 A JP H04115211A JP 2235098 A JP2235098 A JP 2235098A JP 23509890 A JP23509890 A JP 23509890A JP H04115211 A JPH04115211 A JP H04115211A
- Authority
- JP
- Japan
- Prior art keywords
- field
- wide
- narrow
- objective lens
- reflecting mirror
- 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 title claims abstract description 34
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003331 infrared imaging Methods 0.000 description 2
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Abstract
Description
【発明の詳細な説明】
〔概要〕
広視野取得及び狭視野取得に対して夫々光学系を切換で
用いる撮像に関し、
装置を小形化することを目的とし、
広／狭視野共用対物レンズと、該対物レンズと同一光軸
上にあり、該対物レンズに対して光検知素子側に設けら
れた広視野用対物レンズと、広視野用対物レンズに対し
て光検知素子側に設けられ、広／狭視野共用対物レンズ
からの光を広視野用対物レンズ方向に反射させる第１の
狭視野用反射ミ−４−と、広／狭視野共用対物ンンズと
同一光軸上こあり、広視野用対物しンズと該第１の狭視
野用反射ミラーとの間に設けられ、視野切換え操作によ
り、広視野用対物レンズからの光を通過させる態様と、
広視野用対物レンズからの光を遮光しかつ第１の狭視野
用反射ミラーからの光を光検知素子方向に反射させる態
様とに切換え可能な第２の狭視野用反射ミラーとを設け
たこと構成とする。[Detailed Description of the Invention] [Summary] The purpose of this invention is to miniaturize the apparatus for imaging using switching optical systems for wide-field acquisition and narrow-field acquisition, and to provide a wide-field/narrow-field common objective lens and A wide-field objective lens is on the same optical axis as the objective lens and is provided on the photodetecting element side with respect to the objective lens, and a wide/narrow objective lens is provided on the photodetecting element side with respect to the wide-field objective lens. A first narrow-field reflection mirror 4 for reflecting the light from the common-field objective lens toward the wide-field objective lens is located on the same optical axis as the wide-field/narrow-field common objective lens, and the wide-field objective lens is located on the same optical axis as the wide-field/narrow-field common objective lens. a mode in which the lens is provided between the lens and the first narrow-field reflecting mirror, and allows light from the wide-field objective lens to pass through by a field-of-view switching operation;
A second narrow-field reflecting mirror is provided that can be switched to a mode in which light from the wide-field objective lens is blocked and light from the first narrow-field reflecting mirror is reflected in the direction of the photodetector element. composition.
本発明は、広視野取得及び狭視野取得に対して夫々光学
系を切換えて用いる撮像装置に関する。The present invention relates to an imaging apparatus that uses an optical system by switching between wide-field-of-view acquisition and narrow-field-of-view acquisition.
例えば、赤外線検知に素子を用いて視野の赤外線パワー
を検出し、視野中の目標物の画像を得る赤外線撮像装置
か様々の分野で用いられている。For example, infrared imaging devices that use infrared detection elements to detect infrared power in a field of view and obtain images of targets in the field of view are used in various fields.
その一つの例として、赤外線撮像装置を航空機等に搭載
することか行なわれており、このような場合、赤外線シ
ステムの多様化に伴って装置を小形化することか要求さ
れている。As one example, infrared imaging devices are mounted on aircraft, etc. In such cases, as infrared systems become more diverse, it is required to downsize the devices.
〔従来の技術〕
第３図は従来の一例の構成図を示す。同図中、１は狭視
野用対物レンズ、２は広視野用対物しシスで、互いに別
々の光軸上に設けられている。っ３は遮光板で、視野切
換え操作によって狭視野用対物しンズｌ又は広視野用対
物レンズ２の夫々の光軸に対向するようにその位置を移
動させる構成とされている。４は反射ミラーで、広視野
用対物レンズ２の光軸上に、又、５は可動プリズムで、
狭視野用対物レンズ１の光軸上に夫々設けられている。[Prior Art] FIG. 3 shows a configuration diagram of a conventional example. In the figure, 1 is a narrow-field objective lens, and 2 is a wide-field objective lens, which are provided on different optical axes. Reference numeral 3 denotes a light shielding plate, which is configured to move its position so as to face the respective optical axes of the narrow-field objective lens 1 or the wide-field objective lens 2 by a field-of-view switching operation. 4 is a reflecting mirror, which is placed on the optical axis of the wide-field objective lens 2; 5 is a movable prism;
They are respectively provided on the optical axis of the narrow-field objective lens 1.
６は集光レンズ、７は赤外線検知素子で、狭視野用対物
レンズｌの光軸上に設けられている。6 is a condenser lens, and 7 is an infrared detection element, which are provided on the optical axis of the narrow-field objective lens l.
ここて、広視野画像を取得しようとする場合、遮光板３
を第３図に実線で示すように狭視野用対物レンズ１０光
軸に対向せしめる。これにより、広視野用対物レンズ２
を通過した赤外光は反射ミラー４、可動プリズム５、集
光レンズ６を介して赤外線検知素子７に入り、赤外線パ
ワー検知か行なわれる。この場合、狭視野用対物レンズ
１を通過した赤外光は遮光板３で遮られてプリズム５に
入らない。Here, when trying to obtain a wide-field image, the light shielding plate 3
is opposed to the optical axis of the narrow-field objective lens 10, as shown by the solid line in FIG. As a result, the wide-field objective lens 2
The infrared light passing through enters the infrared detecting element 7 via the reflecting mirror 4, movable prism 5, and condensing lens 6, where infrared power is detected. In this case, the infrared light that has passed through the narrow-field objective lens 1 is blocked by the light shielding plate 3 and does not enter the prism 5.
一方、狭視野画像を取得しようとする場合、遮光板３を
破線で示すように広視野用対物レンズ２の光軸に対向せ
しめ、かつ、可動プリズム５を破線で示す位置に可動せ
しめる。これにより、狭視野用対物レンズ１を通過した
赤外光はそのまま集光レンズ６を介して赤外線検知素子
７に入り、赤外線パワー検知か行なわれる。この場合、
広視野用対物レンズ２を通過した赤外光は遮光板３て遮
られて反射ミラー４に入らない。On the other hand, when attempting to obtain a narrow-field image, the light shielding plate 3 is opposed to the optical axis of the wide-field objective lens 2 as shown by the broken line, and the movable prism 5 is moved to the position shown by the broken line. As a result, the infrared light that has passed through the narrow-field objective lens 1 enters the infrared detection element 7 via the condenser lens 6 as it is, and infrared power is detected. in this case,
Infrared light passing through the wide-field objective lens 2 is blocked by a light shielding plate 3 and does not enter the reflecting mirror 4.
このように、広視野取得及び狭視野取得に対して広視野
用対物レンズ１と狭視野用対物レンズ２とを切換えて用
いる。In this way, the wide-field objective lens 1 and the narrow-field objective lens 2 are switched and used for wide-field acquisition and narrow-field acquisition.
従来例は、狭視野用対物レンズｌ及び広視野用対物レン
ズ２を別々の光軸上に設けたため、狭視野用対物レンズ
１と広視野用対物レンズ２との光軸間隔か比較的広く、
このため、装置の容積か大きくなり、小型化できない問
題点かあった。In the conventional example, the narrow-field objective lens 1 and the wide-field objective lens 2 are provided on separate optical axes, so the distance between the optical axes of the narrow-field objective lens 1 and the wide-field objective lens 2 is relatively wide.
For this reason, the volume of the device becomes large, which poses a problem that it is not possible to downsize the device.
本発明は、装置を小形化できる撮像装置の光学機構を提
供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide an optical mechanism for an imaging device that allows the device to be miniaturized.
広／狭視野共用対物レンズと、広視野共用対物レンズと
は同一光軸上に、広視野用対物レンズが広／狭視野共用
対物レンズに対して光検知素子側に位置するように設け
られている。第１の狭視野用反射ミラーは、広視野用対
物レンズに対して該光検知素子側に設けられ、広／狭視
野共用対物レンズからの光を広視野用対物レンズ方向に
反射させる。第２の狭視野用反射ミラーは広／狭視野共
用対物レンズと同一光軸上に、広視野用対物レンズと第
１の狭視野用反射ミラーとの間に設けられ、視野切換え
操作により、広視野用対物レンズからの光を通過させる
第１の態様と、広視野用対物レンズからの光を遮光しか
つ第１の狭視野用反射ミラーからの光を光検知素子方向
に反射させる第２の態様とに切換え可能である。The wide-field/narrow-field common objective lens and the wide-field common objective lens are provided on the same optical axis, with the wide-field objective lens located on the photodetecting element side with respect to the wide/narrow-field common objective lens. There is. The first narrow-field reflecting mirror is provided on the photodetecting element side with respect to the wide-field objective lens, and reflects light from the wide-field/narrow-field common objective lens toward the wide-field objective lens. The second narrow-field reflecting mirror is provided on the same optical axis as the wide-field/narrow-field common objective lens, and between the wide-field objective lens and the first narrow-field reflecting mirror. A first mode in which light from the wide-field objective lens is passed through, and a second mode in which light from the wide-field objective lens is blocked and light from the first narrow-field reflecting mirror is reflected toward the photodetector element. It is possible to switch between different modes.
広視野取得時、第２の狭視野用反射ミラーを第１の態様
に設定する。これにより、広／′視野共用対物しンズ及
び広視野用対物レンズを通過した光はそのまま光検知素
子に入る。一方、狭視野取得時、第２の狭視野用反射ミ
ラーを第２の態様に設定する。これにより、広／狭視野
用対物レンズを通過した光は第１の視野用反射ミラー、
第２の狭視野用反射ミラーにて反射され、光検知素子に
入る。When acquiring a wide field of view, the second narrow field reflecting mirror is set to the first mode. As a result, the light that has passed through the wide/'wide field of view objective lens and the wide field of view objective lens enters the photodetector element as it is. On the other hand, when acquiring a narrow field of view, the second reflection mirror for narrow field of view is set to the second mode. As a result, the light that has passed through the wide/narrow field objective lens is directed to the first field reflection mirror,
The light is reflected by the second narrow-field reflecting mirror and enters the photodetector element.
本発明では、広／狭視野共用対物レンズ及び広視野用対
物レンズを同一光軸に設けたため、広視野用対物レンズ
及び狭視野用対物レンズを別々の光軸上に設けた従来例
に比して装置を小形化できる。In the present invention, the wide/narrow-field common objective lens and the wide-field objective lens are provided on the same optical axis, compared to the conventional example in which the wide-field objective lens and the narrow-field objective lens are provided on separate optical axes. The device can be made smaller.
第１図は本発明の一実施例の構成図を示し、同図中、第
３図と同一構成部分には同一番号を付す。FIG. 1 shows a configuration diagram of an embodiment of the present invention, in which the same components as in FIG. 3 are given the same numbers.
同図中、１０は広／狭視野共用対物レンズで、広視野取
得及び狭視野取得の両方に用いられる。In the figure, reference numeral 10 denotes a wide/narrow field common objective lens, which is used for both wide field and narrow field of view acquisition.
１１は広視野用対物レンズで、広・′狭視野共用ｔｊ物
しンズ１０の光軸ｒ。上て、これよりも赤々（線検知素
子Ｔ側に設けられている。１２は可倒式狭視野用反射ミ
ラーて、上記光軸ｆ。て、可倒式狭視野用反射ミラー１
２よりも赤外線検知素子７側に設けられており、視野切
換え操作によって実線で示す位置及び破線で示す移動可
能に構成されている。１３ａ、１３ｂは固定式狭視野用
反射ミラーで、広／狭視野共用対物レンズ１０の光路上
において、広／狭視野共用対物レンズ１０を通過した赤
外光を反射して可倒式狭視野用ミラー１２に照射するよ
うな位置に設けられている。Reference numeral 11 denotes a wide-field objective lens, and the optical axis r of the objective lens 10 for both wide and narrow fields of view. 12 is a collapsible narrow-field reflecting mirror, and the above-mentioned optical axis f is a collapsible narrow-field reflecting mirror 1.
It is provided closer to the infrared detecting element 7 than 2, and is configured to be movable to the position shown by the solid line and the position shown by the broken line by a field of view switching operation. Reference numerals 13a and 13b are fixed narrow-field reflecting mirrors, which reflect the infrared light that has passed through the wide/narrow-field common objective lens 10 on the optical path of the wide-field/narrow-field common objective lens 10, and reflect the infrared light that has passed through the wide/narrow-field common objective lens 10. It is provided at a position that illuminates the mirror 12.
ここで、広視野画像を取得しようとする場合、可倒式狭
視野用反射ミラー１２を支点１２ａを中心に回動させて
破線で示す位置に移動する。これにより、第２図（Ａ）
に示す如く、広／狭視野共用対物レンズ１０、広視野用
対物レンズ１１を通過した赤外光（光路はＩ！０）はそ
のまま集光レンズ６を介して赤外線検知素子７に入る。Here, when attempting to obtain a wide-field image, the collapsible narrow-field reflecting mirror 12 is rotated about the fulcrum 12a and moved to the position shown by the broken line. As a result, Figure 2 (A)
As shown, the infrared light (the optical path is I!0) that has passed through the wide/narrow field objective lens 10 and the wide field objective lens 11 enters the infrared detecting element 7 via the condenser lens 6 as it is.
この場合、固定式狭視野用反射ミラー１３ａ、１３ｂて
反射した赤外線光か広視野用対物レンズ１１を通過した
赤外光に影響を与えないようにする手段か設けられてい
るものとする。In this case, a means is provided to prevent the infrared light reflected by the fixed narrow-field reflecting mirrors 13a and 13b from affecting the infrared light passing through the wide-field objective lens 11.
一方、狭視野画像を取得しようとする場合、可倒式狭視
野用反射ミラー１２を第１図に実線で示す位置に設定す
る。これにより、第２図（Ｂ）に示すごとく、広／狭視
野共用対物レンズＩＯを通過した赤外光（光路はＩ！＋
、１２）は固定式狭視野用反射ミラー１３ａ、１３ｂに
て反射され、更に可倒式狭視野用反射ミラー１２によっ
て反射され、集光レンズ６を介して赤外線検知層７に入
る。On the other hand, when attempting to obtain a narrow-field image, the collapsible narrow-field reflecting mirror 12 is set at the position shown by the solid line in FIG. As a result, as shown in FIG. 2(B), the infrared light (the optical path is I!+) passes through the wide/narrow field common objective lens IO.
, 12) are reflected by the fixed narrow-field reflecting mirrors 13a and 13b, further reflected by the retractable narrow-field reflecting mirror 12, and enter the infrared detection layer 7 via the condenser lens 6.
この場合、広／狭視野共用対物レンズ１０、広視野用対
物レンズ１１を通過した赤外光は可倒式狭視野用反射ミ
ラー１２の裏面として遮光され、赤外線検知素子７には
入らない。In this case, the infrared light that has passed through the wide/narrow field common objective lens 10 and the wide field objective lens 11 is blocked by the back surface of the foldable narrow field reflecting mirror 12 and does not enter the infrared detecting element 7.
このように、本発明では、同一光軸！。上に広／狭視野
共用対物レンズ１０及び広視野用対物レンズ１１を設け
、広視野取得時、広／狭視野共用対物レンズ１０及び広
視野用対物レンズ１１を用い、一方、狭視野取得時、広
／狭視野共用対物しンズＩＯ１固定式狭視野用反射ミラ
ー＋３ａ１３ｂ及び可倒式狭視野用反射ミラー１２を用
いる構成としているため、広視野用対物レンズ及び狭視
野用対物レンズを別々の光軸上に設けた構成の従来例に
比して装置の容積を小さくてき、小形化できる。In this way, the present invention uses the same optical axis! . A wide/narrow field common objective lens 10 and a wide field objective lens 11 are provided above, and when a wide field of view is acquired, the wide/narrow field common objective lens 10 and a wide field of view objective lens 11 are used, while when a narrow field of view is acquired, Since the configuration uses the wide/narrow field common objective lens IO1 fixed narrow field reflection mirror +3a13b and the retractable narrow field reflection mirror 12, the wide field objective lens and the narrow field objective lens have separate optical axes. Compared to the conventional example with the above configuration, the volume of the device can be reduced and the device can be made smaller.
なお、可倒式狭視野用反射ミラー１２の代りに、例えば
、中央部分を開閉てきるシャッタを設けられた反射ミラ
ーを構成し、広視野取得時にはンヤソタを開いて広視野
用対物しンズ１１を通過した赤外光をそのまま通す一方
、狭視野取得時にはシャッタを閉じて固定式狭視野用反
射ミラー１３ａ、１３ｂにて反射された赤外光をこのン
ヤッタ部分で更に反射させるようにしてもよい。Note that instead of the retractable narrow-field reflecting mirror 12, for example, a reflecting mirror is provided with a shutter that can be opened and closed in the center, and when acquiring a wide field of view, the shutter is opened and the wide-field objective lens 11 is opened. While the infrared light that has passed through may be allowed to pass through as is, when acquiring a narrow field of view, the shutter may be closed and the infrared light reflected by the fixed narrow field of view mirrors 13a and 13b may be further reflected at this Nyatta portion.
以上説明した如く、本発明によれば、広／狭視野共用対
物レンズ及び広視野用対物レンズを同一光軸上に設けて
いるため、広視野用対物レンズ及び狭視野用対物レンズ
を別々の光軸上に設けていた従来例に比して装置の容積
を小さくてき、装置を小形化できる。As explained above, according to the present invention, since the wide-field/narrow-field common objective lens and the wide-field objective lens are provided on the same optical axis, the wide-field objective lens and the narrow-field objective lens are separated by separate beams. The volume of the device can be reduced compared to the conventional example in which the device is provided on the shaft, and the device can be made smaller.
を示す。shows.
は狭視野取得時の光路is the optical path when acquiring a narrow field of view
Claims (1)
０）上にあり、該広／狭視野共用対物レンズ（１０）に
対して光検知素子（７）側に設けられた広視野用対物レ
ンズ（１１）と、 該広視野用対物レンズ（１１）に対して該光検知素子（
７）側に設けられ、上記広／狭視野共用対物レンズ（１
０）からの光を該広視野用対物レンズ（１１）方向に反
射させる第１の狭視野用反射ミラー（１３ａ、１３ｂ）
と、 上記広／狭視野共用対物レンズ（１０）と同一光軸（ｌ
＿０）上にあり、上記広視野用対物レンズ（１１）と該
第１の狭視野用反射ミラー（１３ａ、１３ｂ）との間に
設けられ、視野切換え操作により、上記広視野用対物レ
ンズ（１１）からの光を通過させる態様と、上記広視野
用対物レンズ（１１）からの光を遮光しかつ上記第１の
狭視野用反射ミラー（１３ａ、１３ｂ）からの光を上記
光検知素子（７）方向に反射させる態様とに切換え可能
な第２の狭視野用反射ミラー（１２）とを設けてなるこ
とを特徴とする撮像装置の光学機構。[Claims] A wide/narrow field common objective lens (10), an optical axis (l_
0) and a wide-field objective lens (11) provided on the photodetector element (7) side with respect to the wide/narrow-field common objective lens (10); and the wide-field objective lens (11). The photodetector element (
7) side, and the above-mentioned wide/narrow field common objective lens (1
0) in the direction of the wide-field objective lens (11);
and the same optical axis (l) as the wide/narrow field objective lens (10).
_0), and is provided between the wide-field objective lens (11) and the first narrow-field reflecting mirror (13a, 13b), and is provided on the wide-field objective lens (11) by the field-of-view switching operation. ), while blocking light from the wide-field objective lens (11) and transmitting light from the first narrow-field reflecting mirror (13a, 13b) to the photodetector element (7). ) A second narrow-field reflecting mirror (12) that can be switched between a reflection mode and a second narrow-field reflecting mirror (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2235098A JPH04115211A (en) | 1990-09-05 | 1990-09-05 | Optical mechanism of image pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2235098A JPH04115211A (en) | 1990-09-05 | 1990-09-05 | Optical mechanism of image pickup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04115211A true JPH04115211A (en) | 1992-04-16 |
Family
ID=16981031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2235098A Pending JPH04115211A (en) | 1990-09-05 | 1990-09-05 | Optical mechanism of image pickup device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04115211A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006235605A (en) * | 2005-01-27 | 2006-09-07 | Toyota Motor Corp | Zoom mechanism |
| JP2007193015A (en) * | 2006-01-18 | 2007-08-02 | Toyota Motor Corp | Pan-tilt-zoom device and pan-tilt device |
-
1990
- 1990-09-05 JP JP2235098A patent/JPH04115211A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006235605A (en) * | 2005-01-27 | 2006-09-07 | Toyota Motor Corp | Zoom mechanism |
| JP2007193015A (en) * | 2006-01-18 | 2007-08-02 | Toyota Motor Corp | Pan-tilt-zoom device and pan-tilt device |
| JP4671234B2 (en) * | 2006-01-18 | 2011-04-13 | トヨタ自動車株式会社 | Pan / tilt zoom device and pan / tilt device |
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