JPH0376384A - Interchangeable lens - Google Patents
Interchangeable lensInfo
- Publication number
- JPH0376384A JPH0376384A JP1212762A JP21276289A JPH0376384A JP H0376384 A JPH0376384 A JP H0376384A JP 1212762 A JP1212762 A JP 1212762A JP 21276289 A JP21276289 A JP 21276289A JP H0376384 A JPH0376384 A JP H0376384A
- Authority
- JP
- Japan
- Prior art keywords
- interchangeable lens
- camera
- size
- image circle
- image
- 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.)
- Granted
Links
- 238000003384 imaging method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 101001106432 Homo sapiens Rod outer segment membrane protein 1 Proteins 0.000 description 1
- 102100021424 Rod outer segment membrane protein 1 Human genes 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Lens Barrels (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は交換レンズに係り、特に撮像素子を有し且つレ
ンズ交換が可能なビデオカメラ、電子スチルカメラ等の
カメラに使用される交換レンズに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an interchangeable lens, and more particularly to an interchangeable lens used in a camera such as a video camera, an electronic still camera, etc., which has an image pickup element and has interchangeable lenses. .
一般に、ビデオカメラの撮像素子としては、ｌ／２イン
チあるいは２／３インチ対角線のサイズのＣＯＤ固体固
体素像素子く用いられている。Generally, a COD solid-state image element with a diagonal size of 1/2 inch or 2/3 inch is used as an image sensor for a video camera.
一方、交換レンズには、撮像素子の大きさに応じた種々
のレンズイメージサークルを有するものがある。On the other hand, some interchangeable lenses have various lens image circles depending on the size of the image sensor.
従って、レンズ交換式のビデオカメラでは、そのビデオ
カメラの撮像素子の大きさに応じたイメージサークルを
有する交換レンズを使用するのが好ましい。Therefore, in an interchangeable lens video camera, it is preferable to use an interchangeable lens having an image circle corresponding to the size of the image sensor of the video camera.
しかしながら、従来の交換レンズをレンズ交換式のビデ
オカメラに取付けた場合に、その交換レンズのイメージ
サークルがビデオカメラの撮像素子の大きさに適してい
るか否かを識別することができなかった。このため、例
えばビデオカメラの撮像素子よりも小さいイメージサー
クルの交換レンズを装着して撮影すると、ケラレが生じ
良好な撮影ができないという問題が生じる。However, when a conventional interchangeable lens is attached to an interchangeable lens video camera, it has not been possible to determine whether the image circle of the interchangeable lens is suitable for the size of the image sensor of the video camera. For this reason, for example, when an interchangeable lens with an image circle smaller than the image sensor of a video camera is attached to take a picture, vignetting occurs and good pictures cannot be taken.
本発明はこのような事情に鑑みてなされたもので、交換
レンズのイメージサークルの大きさをカメラ側に伝達す
ることができる交換レンズを提供することを目的とする
。The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an interchangeable lens that can transmit the size of the image circle of the interchangeable lens to the camera side.
本発明は前記目的を達成するために、撮像素子を有し且
つレンズ交換が可能なカメラに使用される交換レンズに
おいて、前記交換レンズのカメラへの装着時に、該交換
レンズのイメージサークルの大きさを前記カメラに伝達
するための手段を交換レンズに設けるようにしたことを
特徴としている。In order to achieve the above object, the present invention provides an interchangeable lens used in a camera having an image sensor and an interchangeable lens, in which the size of the image circle of the interchangeable lens is determined when the interchangeable lens is attached to the camera. The present invention is characterized in that the interchangeable lens is provided with means for transmitting the information to the camera.
本発明によれば、前記交換レンズをカメラに装着すると
、その交換レンズのイメージサークルの大きさを示す情
報が交換レンズ側からカメラ側に伝達される。これによ
り、カメラ側では交換レンズのイメージサークルの大き
さを検知することができ、カメラの撮像素子の大きさと
交換レンズのイメージサークルの大きさとに基づいて種
々の対応をとることができる。According to the present invention, when the interchangeable lens is attached to a camera, information indicating the size of the image circle of the interchangeable lens is transmitted from the interchangeable lens side to the camera side. As a result, the camera side can detect the size of the image circle of the interchangeable lens, and can take various measures based on the size of the image sensor of the camera and the size of the image circle of the interchangeable lens.
以下添付図面に従って本発明に係る交換レンズの好まし
い実施例を詳説する。Preferred embodiments of the interchangeable lens according to the present invention will be described in detail below with reference to the accompanying drawings.
第１図は本発明に係る交換レンズと該交換レンズが装着
されるレンズ交換式のビデオカメラの一実施例を示すブ
ロック図である。同図において、交換レンズＩＯには、
レンズＲＯＭ１２が埋設されており、レンズマウント部
にレンズＲＯＭ１２の接点１２Ａが設けられている。こ
のレンズＲ○Ｍ１２には、交換レンズ１０のイメージサ
ークルを示すデータが記憶されている。FIG. 1 is a block diagram showing an embodiment of an interchangeable lens according to the present invention and an interchangeable lens video camera to which the interchangeable lens is attached. In the same figure, the interchangeable lens IO has
A lens ROM 12 is embedded, and a contact 12A of the lens ROM 12 is provided in the lens mount. This lens R○M12 stores data indicating the image circle of the interchangeable lens 10.
一方、ビデオカメラ２０は、装着される交換レンズのイ
メージサークルの大きさに応じて撮影禁止く警告表示）
、通常撮影及び手振れ補正撮影を行うもので、交換レン
ズ１０が装着されると、マウント部のレンズ側の接点１
２Ａとカメラ側の接点２２とが導通し、レンズＲＯＭ１
２とカメラＣＰＵ２４とが接続される。On the other hand, the video camera 20 displays a warning that photography is prohibited depending on the size of the image circle of the attached interchangeable lens)
, which performs normal photography and image stabilization photography, and when the interchangeable lens 10 is attached, the contact point 1 on the lens side of the mount part
2A and the contact point 22 on the camera side are electrically connected, and the lens ROM1
2 and the camera CPU 24 are connected.
カメラＣＰＵ２４はレンズＲＯＭ１２から接点１２Ａ、
２２を介して交換レンズ１２のイメージサークルを示す
データを読み取り、読み取ったイメージサークルの大き
さとＣＣＤ固体撮像素子２６の大きさを比較する。そし
て、イメージサークルの直径が撮像素子２６の撮像面の
対角線長よりも小さいと判断すると（例えば、第２図（
Ａ＞に示すように２／３インチＣＣＤに対して１／２イ
ンチＣＣＤ用のイメージサークルを持つ交換レンズが取
り付けられた場合）、ビス−ファインダ（図示せず）内
の表示器２８に警告を表示するとともに、録画ボタンを
不動作にして撮影を禁止する。これにより、撮影画面の
隅にケラレ等が生じる撮影を未然に防止することができ
る。The camera CPU 24 connects the lens ROM 12 to the contact point 12A,
Data indicating the image circle of the interchangeable lens 12 is read through the lens 22, and the size of the read image circle is compared with the size of the CCD solid-state image sensor 26. If it is determined that the diameter of the image circle is smaller than the diagonal length of the imaging surface of the image sensor 26 (for example, as shown in FIG.
If an interchangeable lens with an image circle for a 1/2 inch CCD is attached to a 2/3 inch CCD as shown in A>, a warning will be displayed on the display 28 in the bis-finder (not shown). At the same time, the recording button is disabled and shooting is prohibited. Thereby, it is possible to prevent photographing in which vignetting or the like occurs in the corners of the photographic screen.
また、イメージサークルの直径が撮像素子２６の撮像面
の対角線長とほぼ一致すると判断するとく第２図（Ｂ）
参照ン、通常の撮影を行わせる。Furthermore, if it is determined that the diameter of the image circle is approximately equal to the diagonal length of the imaging surface of the imaging element 26, then FIG. 2(B)
For reference, normal photography is performed.
即ち、交換レンズ１０を通って入射した光は、ＣＣＤ固
体撮像素子２６の撮像面に結像され、各センサで光の強
さに応じた量の信号電荷に変換される。この信号電荷は
順次読み出され、映像信号処理回路３０に出力される。That is, the light incident through the interchangeable lens 10 is imaged on the imaging surface of the CCD solid-state image sensor 26, and is converted by each sensor into an amount of signal charge corresponding to the intensity of the light. These signal charges are sequentially read out and output to the video signal processing circuit 30.
映像信号処理回路３０は、ホワイトバランス回路、γ補
正回路、マトリクス回路、エンコーダ回路等を含み、こ
れらの回路によって所定の信号処理を行ったのち、ＮＴ
ＳＣ方式の映像信号を出力する。この映像信号は図示し
ないＶＴＲ８に加えられ、ビデオテープに磁気記録され
る。The video signal processing circuit 30 includes a white balance circuit, a γ correction circuit, a matrix circuit, an encoder circuit, etc., and after performing predetermined signal processing by these circuits, the NT
Outputs an SC video signal. This video signal is applied to a VTR 8 (not shown) and magnetically recorded on a video tape.
一方、イメージサークルの直径が撮像素子２６の撮像面
の対角線長よりも一定倍率以上大きいと判断するとく例
えば、第２図（Ｃ）に示すように１／２インチＣＣＤに
対して２／３インチＣＣＤ用のイメージサークルを持つ
交換レンズが取付けられた場合）、手振れ補正撮影を行
わせる。On the other hand, if it is determined that the diameter of the image circle is larger than the diagonal length of the imaging surface of the image sensor 26 by more than a certain magnification, for example, as shown in FIG. (When an interchangeable lens with an image circle for CCD is attached), image stabilization photography is performed.
ここで、手振れ補正撮影とは、撮像素子２６、映像信号
処理３０等により映像１言号を得るとともに、手振れに
よる撮影画面の動揺を撮像素子２６を移動させることに
よって補正する撮影モードをいい、主として手振れ検出
回路３２、制御回路３４及びＣＣＤ移動粗３６によって
撮影画面の動揺を補正するようにしている。Here, image stabilization shooting refers to a shooting mode in which one word of video is obtained by the image sensor 26, video signal processing 30, etc., and the fluctuation of the shooting screen due to camera shake is corrected by moving the image sensor 26. The camera shake detection circuit 32, the control circuit 34, and the CCD movement roughness 36 are used to correct the shaking of the photographic screen.
手振れ検出回路３２は手振れによって生じるカメラの上
下方向及び左右方向の角速度を検出し、この検出した角
速度を示す信号を制御回路３４に出力する。The camera shake detection circuit 32 detects the vertical and horizontal angular velocities of the camera caused by camera shake, and outputs a signal indicating the detected angular velocities to the control circuit 34 .
制御回路３４はＣＰＵ２４から手振れ補正を行う指令を
人力することにより動作可能になり、上記手振れ検出回
路３２からの入力信号に基づいて撮像素子２６を移動さ
せるための制御信号をＣＣＤ移動装置３６に出力する。The control circuit 34 becomes operational by manually inputting a command from the CPU 24 to perform camera shake correction, and outputs a control signal for moving the image sensor 26 to the CCD moving device 36 based on the input signal from the camera shake detection circuit 32. do.
ＣＣＤ移動装置３６は第２図（Ｃ）に示すように撮像素
子２６を交換レンズのイメージサークル内で移動させる
もので、前記制御回路３４から人力する制御信号に基づ
いて撮像素子２６を移動させ、これにより手振れがあっ
ても撮像素子２６の撮像面上で被写体像が移動しないよ
うにする。The CCD moving device 36 moves the image sensor 26 within the image circle of the interchangeable lens as shown in FIG. This prevents the subject image from moving on the imaging surface of the image sensor 26 even if there is camera shake.
尚、本実施例では、第２図（Ａ）に示したように交換レ
ンズのイメージサークルの直径が撮像素子の撮像面の対
角線長よりも小さい場合には、撮影不可として警告を発
生するようにしたが、第２図（Ａ）に示したイメージサ
ークルに内接する置像（破線部分）の信号のみを記録ま
たはカメラ出力するようにしてもよい。In this embodiment, as shown in FIG. 2(A), if the diameter of the image circle of the interchangeable lens is smaller than the diagonal length of the imaging surface of the image sensor, a warning is generated indicating that photography is not possible. However, only the signal of the image inscribed in the image circle shown in FIG. 2(A) (the broken line portion) may be recorded or outputted by the camera.
また、本実施例では交換レンズのイメージサークルの大
きさとカメラ側の撮像素子の大きさとの比較に基づいて
３つのモードのうちいずれか１つを選択するようにした
が、交換レンズがカメラに適しているか否かのみを判別
するようにしてもよい。In addition, in this example, one of the three modes was selected based on the comparison between the size of the image circle of the interchangeable lens and the size of the image sensor on the camera side, but the interchangeable lens is suitable for the camera. It may also be possible to determine only whether or not it is.
更に、交換レンズのイメージサークルの大きさをカメラ
側に伝達する手段としてはレンズＲＯＭに限らず、種々
のものが考えられ、例えば、交換レンズにイメージサー
クルの大きさを示すコードパターンや切欠きを設け、カ
メラ側の読取器でこのコードパターンを読み取りまたは
切欠きにレバーを落とし込んで読み取るようにしてもよ
い。Furthermore, as a means of transmitting the size of the image circle of an interchangeable lens to the camera side, there are various methods other than the lens ROM. The code pattern may be read by a reader on the camera side or by dropping a lever into the notch.
以上説明したように本発明に係る交換レンズによれば、
交換レンズの装着時に、交換レンズのイメージサークル
の大きさをカメラ側に伝達することが可能となり、カメ
ラ側では交換レンズのイメージサークルの大きさに応じ
た種々の制御を行うことができる。As explained above, according to the interchangeable lens according to the present invention,
When the interchangeable lens is attached, it becomes possible to transmit the size of the image circle of the interchangeable lens to the camera side, and the camera side can perform various controls according to the size of the image circle of the interchangeable lens.
第１図は本発明に係る交換レンズと該交換レンズが装着
されるレンズ交換式のビデオカメラの一実施例を示すブ
ロック図、第２図（Ａ）乃至（Ｃ）はそれぞれ交換レン
ズのイメージサークルの大きさと撮像素子の撮像面の大
きさの関係を示す図である。
１０・・・交換レンズ、 １２・・・レンズＲＯＭ。
１２Ａ、２２・・・接点、 ２０・・・ビデオカメラ
、２６・・・ＣＣＤ固体撮像素子。
情 ２ 図
（Ａ）
（Ｂ）FIG. 1 is a block diagram showing an embodiment of an interchangeable lens according to the present invention and an interchangeable lens video camera to which the interchangeable lens is attached, and FIGS. 2(A) to (C) are image circles of the interchangeable lens, respectively. FIG. 3 is a diagram showing the relationship between the size of the image sensor and the size of the imaging surface of the image sensor. 10... Interchangeable lens, 12... Lens ROM. 12A, 22... Contact, 20... Video camera, 26... CCD solid-state image sensor. Information 2 Diagram (A) (B)
Claims (1)
れる交換レンズにおいて、 前記交換レンズのカメラへの装着時に、該交換レンズの
イメージサークルの大きさを前記カメラに伝達するため
の手段を交換レンズに設けるようにしたことを特徴とす
る交換レンズ。[Scope of Claims] In an interchangeable lens used in a camera having an image sensor and with interchangeable lenses, the size of the image circle of the interchangeable lens is transmitted to the camera when the interchangeable lens is attached to the camera. An interchangeable lens characterized in that the interchangeable lens is provided with a means for doing so.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1212762A JP2521816B2 (en) | 1989-08-17 | 1989-08-17 | camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1212762A JP2521816B2 (en) | 1989-08-17 | 1989-08-17 | camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0376384A true JPH0376384A (en) | 1991-04-02 |
| JP2521816B2 JP2521816B2 (en) | 1996-08-07 |
Family
ID=16627982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1212762A Expired - Fee Related JP2521816B2 (en) | 1989-08-17 | 1989-08-17 | camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2521816B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003037773A (en) * | 2001-07-25 | 2003-02-07 | Canon Inc | Imaging method, imaging device, program and storage medium |
| JP2003060969A (en) * | 2001-08-20 | 2003-02-28 | Canon Inc | Electronic camera, image segmentation method, program and storage medium |
| EP1542455A2 (en) | 2003-12-12 | 2005-06-15 | Canon Kabushiki Kaisha | Image taking apparatus, image taking system, and lens apparatus |
| JP2006349707A (en) * | 2005-06-13 | 2006-12-28 | Canon Inc | Digital camera |
| JP2007166420A (en) * | 2005-12-15 | 2007-06-28 | Fujifilm Corp | Camera system and digital camera |
| JP2009301063A (en) * | 1999-09-20 | 2009-12-24 | Canon Inc | Imaging device and control method applied to imaging device |
| US7675567B2 (en) | 2004-06-11 | 2010-03-09 | Canon Kabushiki Kaisha | Camera, camera system, and lens apparatus |
| JP4500419B2 (en) * | 1999-09-20 | 2010-07-14 | キヤノン株式会社 | Imaging device, control method applied to imaging device, and medium for providing control program applied to imaging device |
| JP2019122014A (en) * | 2018-01-11 | 2019-07-22 | キヤノン株式会社 | Imaging apparatus and camera system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0239777A (en) * | 1988-07-29 | 1990-02-08 | Canon Inc | Video camera |
-
1989
- 1989-08-17 JP JP1212762A patent/JP2521816B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0239777A (en) * | 1988-07-29 | 1990-02-08 | Canon Inc | Video camera |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009301063A (en) * | 1999-09-20 | 2009-12-24 | Canon Inc | Imaging device and control method applied to imaging device |
| US8035695B2 (en) | 1999-09-20 | 2011-10-11 | Canon Kabushiki Kaisha | Image sensing apparatus, method of controlling image sensing apparatus and image recording apparatus, and method of designing optical system |
| JP4500419B2 (en) * | 1999-09-20 | 2010-07-14 | キヤノン株式会社 | Imaging device, control method applied to imaging device, and medium for providing control program applied to imaging device |
| JP2003037773A (en) * | 2001-07-25 | 2003-02-07 | Canon Inc | Imaging method, imaging device, program and storage medium |
| JP2003060969A (en) * | 2001-08-20 | 2003-02-28 | Canon Inc | Electronic camera, image segmentation method, program and storage medium |
| EP1542455A3 (en) * | 2003-12-12 | 2010-01-20 | Canon Kabushiki Kaisha | Image taking apparatus, image taking system, and lens apparatus |
| US7671917B2 (en) | 2003-12-12 | 2010-03-02 | Canon Kabushiki Kaisha | Image taking apparatus, image taking system, and lens apparatus |
| EP1542455A2 (en) | 2003-12-12 | 2005-06-15 | Canon Kabushiki Kaisha | Image taking apparatus, image taking system, and lens apparatus |
| US7675567B2 (en) | 2004-06-11 | 2010-03-09 | Canon Kabushiki Kaisha | Camera, camera system, and lens apparatus |
| JP2006349707A (en) * | 2005-06-13 | 2006-12-28 | Canon Inc | Digital camera |
| JP2007166420A (en) * | 2005-12-15 | 2007-06-28 | Fujifilm Corp | Camera system and digital camera |
| JP2019122014A (en) * | 2018-01-11 | 2019-07-22 | キヤノン株式会社 | Imaging apparatus and camera system |
| JP2022084739A (en) * | 2018-01-11 | 2022-06-07 | キヤノン株式会社 | Imaging apparatus, camera system, and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2521816B2 (en) | 1996-08-07 |
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