JPH0298561U - - Google Patents
Info
- Publication number
- JPH0298561U JPH0298561U JP717689U JP717689U JPH0298561U JP H0298561 U JPH0298561 U JP H0298561U JP 717689 U JP717689 U JP 717689U JP 717689 U JP717689 U JP 717689U JP H0298561 U JPH0298561 U JP H0298561U
- Authority
- JP
- Japan
- Prior art keywords
- focal length
- white balance
- distance
- imaging device
- subject
- 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
- 238000003384 imaging method Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005286 illumination Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 1
Description
第１図は本考案の一実施例の撮像装置３１の電
気的構成を示すブロツク図、第２図はレンズ３３
と焦点距離検出用のポテンシヨンメータ６４およ
び距離検出用のポテンシヨンメータ６５との関係
を示す断面図、第３図は切換制御回路６１の切換
動作を説明するためのグラフ、第４図は従来技術
の撮像装置１の電気的構成を示すブロツク図、第
５図は他の従来技術の撮像装置２１の電気的構成
を示すブロツク図である。
３１……撮像装置、３２……被写体、３３……
レンズ、３４……撮像素子、３５……色分離回路
、３６……輝度信号ＬＰＦ、３７，３８……利得
制御回路、３９，４０……混合回路、４１……エ
ンコーダ、４３……色温度検出回路、５０……ホ
ワイトバランス調整回路、５２……誤差検出回路
、５３，５４……平均値演算回路、５７……切換
回路、６１……切換制御回路、６２……焦点距離
検出手段、６３……距離検出手段、６４，６５…
…ポテンシヨンメータ、Ｓ１，Ｓ２……切換スイ
ツチ。
FIG. 1 is a block diagram showing the electrical configuration of an imaging device 31 according to an embodiment of the present invention, and FIG. 2 shows a lens 33.
FIG. 3 is a graph for explaining the switching operation of the switching control circuit 61, and FIG. 4 is a conventional FIG. 5 is a block diagram showing the electrical configuration of an imaging device 1 according to the prior art. FIG. 5 is a block diagram showing the electrical configuration of an imaging device 21 according to another prior art. 31...imaging device, 32...subject, 33...
Lens, 34... Image pickup element, 35... Color separation circuit, 36... Luminance signal LPF, 37, 38... Gain control circuit, 39, 40... Mixing circuit, 41... Encoder, 43... Color temperature detection Circuit, 50... White balance adjustment circuit, 52... Error detection circuit, 53, 54... Average value calculation circuit, 57... Switching circuit, 61... Switching control circuit, 62... Focal length detection means, 63... ...Distance detection means, 64, 65...
... Potentiometer, S1, S2... Changeover switch.
Claims (1)
結像させて撮像を行う撮像装置において、 該撮像装置周辺の照明光の色温度を検出する色
温度検出手段と、 前記レンズの焦点距離を検出する焦点距離検出
手段と、 被写体までの距離を計測する距離計測手段と、 前記撮像手段からの映像信号のホワイトバラン
ス調整を行うホワイトバランス調整手段と、 前記焦点距離検出手段および距離検出手段から
の出力に基づいて、前記映像信号と色温度検出手
段からの出力とを切換えて、ホワイトバランス調
整手段に導出する切換手段とを含み、 前記レンズの焦点距離が短かいときおよび焦点
距離が長く被写体までの距離が長いときには前記
映像信号に基づいてホワイトバランス調整を行い
、焦点距離が長く被写体までの距離が短かいとき
には前記色温度検出手段の出力に基づいてホワイ
トバランス調整を行うことを特徴とする撮像装置
。[Scope of Claim for Utility Model Registration] In an imaging device that captures an optical image of a subject by forming it on an imaging device through a lens, a color temperature detection device that detects the color temperature of illumination light around the imaging device; , a focal length detecting means for detecting the focal length of the lens; a distance measuring means for measuring the distance to the subject; a white balance adjusting means for adjusting the white balance of the video signal from the imaging means; and the focal length detecting means. and switching means for switching between the video signal and the output from the color temperature detecting means based on the output from the means and the distance detecting means, and outputting the signal to the white balance adjusting means, when the focal length of the lens is short. When the focal length is long and the distance to the subject is long, white balance adjustment is performed based on the video signal, and when the focal length is long and the distance to the subject is short, white balance adjustment is performed based on the output of the color temperature detection means. An imaging device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP717689U JPH0298561U (en) | 1989-01-24 | 1989-01-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP717689U JPH0298561U (en) | 1989-01-24 | 1989-01-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0298561U true JPH0298561U (en) | 1990-08-06 |
Family
ID=31211971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP717689U Pending JPH0298561U (en) | 1989-01-24 | 1989-01-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0298561U (en) |
-
1989
- 1989-01-24 JP JP717689U patent/JPH0298561U/ja active Pending
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