JP2873694B2 - Solid-state imaging device camera - Google Patents
Solid-state imaging device cameraInfo
- Publication number
- JP2873694B2 JP2873694B2 JP1154629A JP15462989A JP2873694B2 JP 2873694 B2 JP2873694 B2 JP 2873694B2 JP 1154629 A JP1154629 A JP 1154629A JP 15462989 A JP15462989 A JP 15462989A JP 2873694 B2 JP2873694 B2 JP 2873694B2
- Authority
- JP
- Japan
- Prior art keywords
- solid
- state imaging
- filter
- imaging device
- optical path
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、撮影レンズにより結像された像を固体撮像
素子を用いて電気信号に変換し、この電気信号を例えば
磁気テープ等の記録媒体に記録する固体撮像素子カメラ
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention converts an image formed by a photographic lens into an electric signal using a solid-state imaging device, and converts the electric signal into a recording medium such as a magnetic tape. The present invention relates to a solid-state imaging device camera for recording in a camera.
［従来の技術］ 従来、固体撮像素子カメラにおいては、電荷結合素子
（CCD）等の固体撮像素子が可視光だけでなく、赤外線
などにも感度を有するため、通常のカメラでは不要とな
る赤外線を遮断・除去（カット）する必要があり、その
赤外線をカットする赤外カットフィルタを固定的に光路
上に配している。[Prior art] Conventionally, in a solid-state imaging device camera, a solid-state imaging device such as a charge-coupled device (CCD) has sensitivity to not only visible light but also infrared light. It is necessary to intercept and remove (cut), and an infrared cut filter for cutting the infrared rays is fixedly arranged on the optical path.
［発明が解決しようとする課題］ しかしながら、上記のような従来の固体撮像素子カメ
ラでは、通常の可視光での撮影を行うカメラと赤外線で
の撮影を行う赤外カメラとを、それぞれ専用のカメラと
して別々に製作していた。そのため、１台のカメラで可
視光と赤外線の撮影を簡易に行うことができなかった。[Problems to be Solved by the Invention] However, in the conventional solid-state imaging device camera as described above, a camera that performs normal visible light imaging and an infrared camera that performs infrared imaging are respectively dedicated cameras. Was produced separately. For this reason, it was not possible to easily capture visible light and infrared light with a single camera.
この発明はかかる課題を解決するためになされたもの
で、１台のカメラで可視光と赤外線の両方の波長光の撮
影を行うことのできる固体撮像素子カメラを提供するこ
とを目的とする。The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a solid-state imaging device camera capable of capturing both visible light and infrared wavelength light with a single camera.
［課題を解決するための手段］ 上記の目的を達成するために、この発明の固体撮像素
子カメラは、撮影レンズによって結像された像を電気信
号に変換するための固体撮像素子と、前記固体撮像素子
に導かれる赤外線を遮断するためのフィルタと、前記撮
像系フィルタを前記固体撮像素子に導かれる光の光路外
へ退避させるための切換手段と、前記切換手段によって
前記撮像系フィルタが前記固体撮像素子に導かれる光の
光路外へ退避しているか否かを検知する検知手段と、撮
影光量を測定するための測光センサと、前記検知手段に
よって前記フィルタが前記固体撮像素子に導かれる光の
光路内にあることが検知された場合、前記測光センサの
出力に応じて前記固体撮像素子の感度を制御し、さら
に、前記検知手段によって前記撮像系フィルタが前記固
体撮像素子に導かれる光の光路外へ退避したことが検知
された場合、前記フィルタが前記固体撮像素子に導かれ
る光の光路外へ退避する前よりも前記固体撮像素子の感
度を下げないように制御する制御手段とを備えるもので
ある。また、前記撮像系フィルタおよび前記測光用フィ
ルタが光路外へそれぞれ退避された場合、前記切換手段
は、前記撮像系フィルタあるいは前記測光用フィルタの
光路長と等価となるような光学的部材をそれぞれ置換す
るものである。[Means for Solving the Problems] In order to achieve the above object, a solid-state imaging device camera according to the present invention includes a solid-state imaging device for converting an image formed by a photographing lens into an electric signal; A filter for blocking infrared rays guided to the imaging element, switching means for retracting the imaging system filter out of an optical path of light guided to the solid-state imaging element, and the imaging system filter including the solid-state image sensor by the switching means. Detecting means for detecting whether or not the light guided to the image sensor is retracted outside the optical path, a photometric sensor for measuring the amount of photographing light, and the filter by the detecting means for the light guided to the solid-state image sensor; When it is detected that the solid-state image sensor is in the optical path, the sensitivity of the solid-state image sensor is controlled in accordance with the output of the photometric sensor. If it is detected that the filter has escaped to the outside of the optical path of the light guided to the solid-state imaging device, the filter lowers the sensitivity of the solid-state imaging device than before the filter has escaped to the outside of the optical path of the light guided to the solid-state imaging device. And control means for performing control so as not to be performed. When the imaging system filter and the photometric filter are respectively retracted out of the optical path, the switching unit replaces an optical member equivalent to the optical path length of the imaging system filter or the photometric filter. Is what you do.
［作用］ 本発明によれば、光学的フィルタ部を撮影レンズ及び
測光用光学系の光路外へ退避可能に保持する切換機構及
び該切換検知部を有し、この切換によって生じる露出値
の変化を、絞り，シャッタ，撮像素子の感度等を制御部
により補正することにより、異なる光線下での撮影を一
台のカメラによって行えるようにしていると同時に、異
なる光線による特殊な撮影効果が得られるようにしてい
る。[Operation] According to the present invention, there is provided a switching mechanism for holding the optical filter unit so as to be retractable out of the optical path of the photographing lens and the photometric optical system, and the switching detection unit. By correcting the aperture, shutter, sensitivity of the image sensor, and the like by the control unit, it is possible to perform photographing under different light rays by one camera, and at the same time, to obtain a special photographing effect by different light rays. I have to.
［実施例］ 第１図は本発明の固体撮像素子カメラの一実施例を示
す説明図であり、同図において、１は測光用センサ３に
対し赤外線をカットするための測光用フィルタ、２は測
光用センサ３に光線を導くための測光用レンズ、４は測
光用フィルタ１を切換スイッチ4aによって波線部まで光
路から退避させたことを検知する測光用フィルタの検知
部、５は測光用センサ３の出力により、絞り，シャッ
タ,CCDの感度等を適正な露出が行われるように制御する
制御部、６は撮像系への赤外線をカットするための撮像
系フィルタ９が切換スイッチ6aによって破線部まで光路
から退避させたことを検知する撮像系フィルタの検知
部、７は制御部５の出力により絞り11を動作させる絞り
ドライバ、８は制御部５の出力によりシャッサ12を動作
させるシャッタドライバ、10は撮像レンズ、13は撮像レ
ンズ10により結像された像を電気信号に変換するための
CCD等の固体撮像素子、14はこの固体撮像素子13により
出力された電気信号を処理するための信号処理部、15は
信号処理部14により処理された電気信号を記録するため
の記録部、16はローパスフィルタである。Embodiment FIG. 1 is an explanatory view showing an embodiment of a solid-state imaging device camera according to the present invention. In FIG. 1, reference numeral 1 denotes a photometric filter for cutting off infrared rays with respect to a photometric sensor 3; A photometric lens 4 for guiding the light beam to the photometric sensor 3, a detecting unit 4 of the photometric filter for detecting that the photometric filter 1 has been retracted from the optical path to the wavy line by the changeover switch 4 a, and a photometric sensor 3. The control section 6 controls the aperture, shutter, CCD sensitivity and the like so that proper exposure is performed by the output of. The imaging system filter 9 for cutting off infrared rays to the imaging system is operated by the changeover switch 6a to the broken line section. A detection unit of an image pickup system filter that detects that the filter is retracted from the optical path, 7 is an aperture driver that operates the aperture 11 by an output of the control unit 5, and 8 is a shutter driver that operates the chassis 12 by the output of the control unit 5. Driver, 10 is an imaging lens, and 13 is for converting an image formed by the imaging lens 10 into an electric signal.
A solid-state imaging device such as a CCD, 14 is a signal processing unit for processing an electric signal output by the solid-state imaging device 13, 15 is a recording unit for recording the electric signal processed by the signal processing unit 14, 16 Is a low-pass filter.
上記構成において、一般的な可視光による撮影を行う
時、すなわち赤外カットフィルタである測光用フィルタ
１と撮像系フィルタ９が光路内にある時、まず初めに、
図示しないレリーズボタンを半押することにより測光セ
ンサ３で光量を測定し、電気信号が制御部５へ送られ
る。この時、測光用フィルタの検知部４と撮像系フィル
タの検知部６は測光用フィルタ１が光路内にあることを
示しているから、制御部５は絞り11,シャッタ12及び撮
像素子の感度を、適性露光になるような組合わせになる
ように計算する。その後、図示しないレリーズボタンを
さらに押し下げることによって、先に制御部５によって
決められた値に絞り11,シャッタ12がそれぞれのドライ
バ7,8により駆動され、固体撮像素子13に露光が行われ
る。次に、固体撮像素子13により露光された像を電気信
号に変換し、この電気信号を可視光での感度設定に合わ
せ、信号処理部14を取り込み、さらに信号処理部14によ
って処理された電気信号を記録部15に送り、磁気テープ
やフロッピーディスク等の記録媒体に書き込み、一連の
撮影が完了する。In the above-described configuration, when shooting with general visible light, that is, when the photometric filter 1 and the imaging system filter 9 that are infrared cut filters are in the optical path, first,
The light amount is measured by the photometric sensor 3 by half-pressing a release button (not shown), and an electric signal is sent to the control unit 5. At this time, since the detection unit 4 of the photometric filter and the detection unit 6 of the imaging system filter indicate that the photometric filter 1 is in the optical path, the control unit 5 determines the sensitivity of the aperture 11, the shutter 12, and the image sensor. , So that the combination is such that the exposure is appropriate. Thereafter, by further depressing a release button (not shown), the aperture 11 and the shutter 12 are driven by the respective drivers 7 and 8 to the values previously determined by the control unit 5, and the solid-state imaging device 13 is exposed. Next, the image exposed by the solid-state imaging device 13 is converted into an electric signal, the electric signal is adjusted to the sensitivity setting with visible light, the signal processing unit 14 is captured, and the electric signal processed by the signal processing unit 14 is further processed. Is sent to the recording unit 15 and written on a recording medium such as a magnetic tape or a floppy disk, and a series of photographing is completed.
次に、赤外線光を加えた撮影を行う時は、測光用フィ
ルタ１と撮像系フィルタ９を第１図の波線で示すように
光路上へ退避させる。しかる後、レリーズボタンを半押
する。この時、測光用フィルタの検知部４と撮像系フィ
ルタの検知部６は各フィルタが光路外にあることを示
す。Next, when performing photographing by adding infrared light, the photometric filter 1 and the imaging system filter 9 are retracted onto the optical path as shown by the dashed line in FIG. Then, press the release button halfway. At this time, the detection unit 4 of the photometric filter and the detection unit 6 of the imaging system filter indicate that each filter is outside the optical path.
よって、この状態で撮影が行われると、可視光による
撮影をした時の光線に撮像系フィルタ９によりカットさ
れていた赤外光も加えられるため、制御部５は絞り11を
絞るか、シャッタ12を高速化するか、撮像素子の感度を
下げるか、少なくとも１つを変化させ、露光料を適性と
するように制御する。この後の動作は前述した可視光に
よる撮影と同様に行われる。Therefore, when the photographing is performed in this state, the infrared light cut by the imaging system filter 9 is also added to the light beam at the time of photographing with the visible light. Is controlled so as to make the exposure fee appropriate by speeding up the operation, reducing the sensitivity of the image sensor, or changing at least one of them. Subsequent operations are performed in the same manner as the above-described imaging using visible light.
上記実施例によれば、可視光と赤外光を加えた撮影が
フィルタを切換えることにより、簡易に行われる。この
時、可視光と赤外光の光学的収差の違いによりソフトフ
ォーカス状の像が得られる。また、赤外光を加えた時、
撮像系素子の感度を下げないか、アップさせることによ
り、ストロボ等の補助光が必要となるような明るさでも
撮影可能となり、撮影可能な機会が増える効果がある。According to the above-described embodiment, imaging by adding visible light and infrared light is easily performed by switching the filters. At this time, a soft focus image is obtained due to the difference in optical aberration between visible light and infrared light. Also, when infrared light is added,
By lowering or increasing the sensitivity of the imaging system element, it is possible to take a picture even at a brightness that requires an auxiliary light such as a strobe light, which has the effect of increasing the chance of taking a picture.
第２図は本発明の他の実施例を示す説明図であり、同
図において、第１図と同一のものには同一符号を示し、
重複する説明は省略する。FIG. 2 is an explanatory view showing another embodiment of the present invention. In FIG. 2, the same components as those in FIG.
Duplicate description will be omitted.
第２図においては、撮像系フィルタ９を撮影レンズ10
とシャッタ12の間に配している。さらに、撮像系フィル
タ９を光路外へ退避させた時、かわりに赤外光のみを透
過させ、かつ撮像系フィルタ９と光路長が等価となる赤
外フィルタ9aを光路内へ入れるようにしてある。同様
に、測光用フィルタ１も測光用フィルタ１と光路長が等
価で、かつ赤外線のみを透過させる測光用赤外フィルタ
1aと置換わるように構成されている。その他の構成は、
第１図の実施例と同様にしてある。In FIG. 2, the image pickup system filter 9 is
And the shutter 12. Furthermore, when the imaging system filter 9 is retracted out of the optical path, only the infrared light is transmitted instead, and an infrared filter 9a having an optical path length equivalent to that of the imaging system filter 9 is inserted into the optical path. . Similarly, the photometric filter 1 has an optical path length equivalent to that of the photometric filter 1 and transmits only infrared light.
It is configured to replace 1a. Other configurations are
It is similar to the embodiment of FIG.
上記構成において、第１図に示した実施例と同様の撮
影動作を行うことにより、撮像系フィルタ９の退避／存
在により、赤外フィルタ9aの存在／退避の動作が追加さ
れれば、可視光によるカメラと赤外線カメラと２通りの
カメラとして使用可能となり、通常の可視光下の撮影は
もちろん、赤外線カメラとして目に見えない時でも、赤
外線を出している物体を撮影可能にする等の特殊効果を
簡易に行うことができる。In the above configuration, by performing the same photographing operation as that in the embodiment shown in FIG. 1, if the presence / retreat operation of the infrared filter 9a is added due to the retreat / presence of the imaging system filter 9, visible light The camera can be used as two types of cameras, infrared camera and infrared camera, and special effects such as shooting under visible light as well as shooting infrared emitting objects even when invisible as an infrared camera Can be easily performed.
［発明の効果］ 以上説明したとおり、本発明は測光用センサや撮像レ
ンズ系にフィルタを出し入れ可能に構成し、また、固体
撮像素子の感度設定や、絞りやシャッタによる露出制御
を該フィルタの出し入れに応じて変化させてやることに
より、１台のカメラで他種の波長域での光線下での撮影
が可能となり、該光線の波長の違いによる撮影上の特殊
効果を簡易に得られる効果がある。[Effects of the Invention] As described above, the present invention is configured so that a filter can be inserted into and removed from a photometric sensor and an imaging lens system, and the sensitivity setting of a solid-state imaging device and exposure control using an aperture and a shutter can be performed by inserting and removing the filter. In this case, it is possible to take a picture under a light beam in another wavelength range with one camera, and it is possible to easily obtain a special effect in photographing due to a difference in the wavelength of the light beam. is there.
第１図は本発明の固体撮像創始カメラの一実施例を示す
説明図、第２図は本発明の他の実施例を示す説明図であ
る。 図中． 1:測光用フィルタ 2:測光用レンズ 3:測光用センサ 4,6:検知部 4a:切換スイッチ 5:制御部 6a:切換スイッチ 7:絞りドライバ 8:シャッタドライバ 9:撮像系フィルタ 10:撮像レンズ 11:絞り 12:シャッタ 13:固体撮像素子 14:信号処理部 15:記録部 16:ローパスフィルタFIG. 1 is an explanatory view showing an embodiment of the solid-state imaging starting camera of the present invention, and FIG. 2 is an explanatory view showing another embodiment of the present invention. In the figure. 1: Photometric filter 2: Photometric lens 3: Photometric sensor 4, 6: Detector 4a: Changeover switch 5: Control unit 6a: Changeover switch 7: Aperture driver 8: Shutter driver 9: Imaging filter 10: Imaging lens 11: Aperture 12: Shutter 13: Solid-state image sensor 14: Signal processing unit 15: Recording unit 16: Low pass filter
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) G03B 7/18 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) G03B 7/18
Claims (2)
号に変換するための固体撮像素子と、 前記固体撮像素子に導かれる赤外線を遮断するためのフ
ィルタと、 前記撮像系フィルタを前記固体撮像素子に導かれる光の
光路外へ退避させるための切換手段と、 前記切換手段によって前記撮像系フィルタが前記固体撮
像素子に導かれる光の光路外へ退避しているか否かを検
知する検知手段と、 撮影光量を測定するための測光センサと、 前記検知手段によって前記フィルタが前記固体撮像素子
に導かれる光の光路内にあることが検知された場合、前
記測光センサの出力に応じて前記固体撮像素子の感度を
制御し、さらに、前記検知手段によって前記撮像系フィ
ルタが前記固体撮像素子に導かれる光の光路外へ退避し
たことが検知された場合、前記フィルタが前記固体撮像
素子に導かれる光の光路外へ退避する前よりも前記固体
撮像素子の感度を下げないように制御する制御手段とを
備えることを特徴とする固体撮像素子カメラ。A solid-state imaging device for converting an image formed by a photographing lens into an electric signal; a filter for blocking infrared rays guided to the solid-state imaging device; Switching means for retracting the light guided to the element out of the optical path, and detecting means for detecting whether or not the imaging system filter is retracted out of the optical path of the light guided to the solid-state imaging element by the switching means. A photometric sensor for measuring the amount of light captured; and a solid-state imaging device according to an output of the photometric sensor when the detection unit detects that the filter is in an optical path of light guided to the solid-state imaging device. Controlling the sensitivity of the element, and further detecting that the imaging system filter has retracted out of the optical path of the light guided to the solid-state imaging element by the detection unit. A solid-state imaging device camera that the filter; and a control means for controlling so as not to lower the sensitivity of the solid-state imaging device than before retracted from the optical path of light guided to the solid-state imaging device.
て、前記撮像系フィルタおよび前記測光用フィルタが光
路外へそれぞれ退避された場合、前記切換手段は、前記
撮像系フィルタあるいは前記測光用フィルタの光路長と
等価となるような光学的部材をそれぞれ置換することを
特徴とする固体撮像素子カメラ。2. The solid-state imaging device camera according to claim 1, wherein when the imaging system filter and the photometric filter are retracted out of the optical path, the switching unit switches the imaging system filter or the photometric filter. A solid-state imaging device camera, wherein optical members each having an equivalent optical path length are replaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1154629A JP2873694B2 (en) | 1989-06-19 | 1989-06-19 | Solid-state imaging device camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1154629A JP2873694B2 (en) | 1989-06-19 | 1989-06-19 | Solid-state imaging device camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0321937A JPH0321937A (en) | 1991-01-30 |
| JP2873694B2 true JP2873694B2 (en) | 1999-03-24 |
Family
ID=15588370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1154629A Expired - Fee Related JP2873694B2 (en) | 1989-06-19 | 1989-06-19 | Solid-state imaging device camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2873694B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3853532B2 (en) * | 1999-02-15 | 2006-12-06 | 富士写真フイルム株式会社 | Photographing method and photographing apparatus |
| JP2003021858A (en) * | 2001-07-09 | 2003-01-24 | Fuji Photo Film Co Ltd | Image pickup device |
| JP4890814B2 (en) * | 2005-08-10 | 2012-03-07 | キヤノン株式会社 | Imaging device |
| JP4757221B2 (en) * | 2007-03-30 | 2011-08-24 | 富士フイルム株式会社 | Imaging apparatus and method |
| CN103969924A (en) * | 2013-02-04 | 2014-08-06 | 陈国诚 | Embedded IR-CUT lens |
-
1989
- 1989-06-19 JP JP1154629A patent/JP2873694B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0321937A (en) | 1991-01-30 |
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