JPS62181934U - - Google Patents
Info
- Publication number
- JPS62181934U JPS62181934U JP1986068905U JP6890586U JPS62181934U JP S62181934 U JPS62181934 U JP S62181934U JP 1986068905 U JP1986068905 U JP 1986068905U JP 6890586 U JP6890586 U JP 6890586U JP S62181934 U JPS62181934 U JP S62181934U
- Authority
- JP
- Japan
- Prior art keywords
- amount
- light
- light incident
- image sensor
- sensor
- 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
- 238000005286 illumination Methods 0.000 claims 2
- 238000005259 measurement Methods 0.000 claims 2
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Exposure Control For Cameras (AREA)
Description
第１図は本考案のビデオカメラ装置の回路ブロ
ツク図。第２図は本考案のビデオカメラ装置の絞
りコントロール部の回路図。第３図は本考案のビ
デオカメラ装置の外観図。第４図は第２図の各部
の信号のタイミングチヤート。
２０……ビデオカメラ本体、２１……ビユーフ
アインダー、２２……グリツプ、２３……信号の
最高電圧レベル、２４……信号の最低電圧レベル
、２５……信号の最高電圧レベル、２６……信号
の最低電圧レベル、２７……信号の最高電圧レベ
ル、２８……信号の最低電圧レベル。
FIG. 1 is a circuit block diagram of the video camera device of the present invention. FIG. 2 is a circuit diagram of the aperture control section of the video camera device of the present invention. FIG. 3 is an external view of the video camera device of the present invention. FIG. 4 is a timing chart of signals in each part of FIG. 2. 20... Video camera body, 21... Viewfinder, 22... Grip, 23... Maximum voltage level of the signal, 24... Minimum voltage level of the signal, 25... Maximum voltage level of the signal, 26... Minimum voltage level, 27... Maximum voltage level of the signal, 28... Minimum voltage level of the signal.
Claims (1)
ージセンサー１とは光学系を異にする光量測定セ
ンサー３に入射する光量によつて、露出が調整さ
れるビデオカメラ装置に於いて、前記イメージセ
ンサー１に入射する光量と前記光量測定センサー
３に入射する光量とを比較する比較器１３を具備
し、前記イメージセンサー１に入射する光量と前
記光量測定センサー１３に入射する光量の比をＡ
とすると、Ａがあらかじめ設定された値より大き
い場合、被写体の照明光は順光、Ａがあらかじめ
設定された値より小さい場合、被写体の照明光は
逆光と、それぞれ判別し、逆光の場合には、絞り
を開く方向に露出調整するよう構成したことを特
徴とするビデオカメラ装置。 In a video camera device, the exposure is adjusted according to the amount of light incident on the image sensor 1 and the amount of light incident on the light amount measuring sensor 3, which has a different optical system from the image sensor 1. A comparator 13 is provided to compare the amount of light incident on the image sensor 1 and the amount of light incident on the light amount measurement sensor 3, and the ratio of the amount of light incident on the image sensor 1 and the amount of light incident on the light amount measurement sensor 13 is calculated as A.
If A is larger than a preset value, the illumination light of the subject is determined to be front light, and if A is smaller than a preset value, the illumination light of the subject is determined to be backlight. A video camera device characterized in that the exposure is adjusted in the direction of opening the aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986068905U JPS62181934U (en) | 1986-05-08 | 1986-05-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986068905U JPS62181934U (en) | 1986-05-08 | 1986-05-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62181934U true JPS62181934U (en) | 1987-11-18 |
Family
ID=30909148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986068905U Pending JPS62181934U (en) | 1986-05-08 | 1986-05-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62181934U (en) |
-
1986
- 1986-05-08 JP JP1986068905U patent/JPS62181934U/ja active Pending
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