JPH0345536U - - Google Patents
Info
- Publication number
- JPH0345536U JPH0345536U JP10640089U JP10640089U JPH0345536U JP H0345536 U JPH0345536 U JP H0345536U JP 10640089 U JP10640089 U JP 10640089U JP 10640089 U JP10640089 U JP 10640089U JP H0345536 U JPH0345536 U JP H0345536U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- sampling area
- bandpass filter
- band
- sampling
- 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
- 238000005070 sampling Methods 0.000 claims description 10
- 238000003384 imaging method Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Indication In Cameras, And Counting Of Exposures (AREA)
Description
第１図は本考案のカメラの一実施例を示す要部
ブロツク図、第２図はそれに使用されるバンドパ
スフイルタの特性図、第３図はサンプリングエリ
アを示す図である。
１……固体撮像素子、Ａ……第１のサンプリン
グエリア、Ｂ……第２のサンプリングエリア、３
……第１バンドパスフイルタ、３′……第２のバ
ンドパスフイルタ、６……選択スイツチ、１２…
…マイクロコンピユータ、１３……表示器（ビユ
ーフアインダ）。
FIG. 1 is a block diagram of the essential parts of an embodiment of the camera of the present invention, FIG. 2 is a characteristic diagram of a bandpass filter used therein, and FIG. 3 is a diagram showing a sampling area. 1... Solid-state image sensor, A... First sampling area, B... Second sampling area, 3
...First band pass filter, 3'... Second band pass filter, 6... Selection switch, 12...
...Microcomputer, 13...Display device.
Claims (1)
のサンプリングエリアと、該第１のサンプリング
エリアの周辺に設けられた第２のサンプリングエ
リアと、 前記第１、第２のサンプリングエリアから得ら
れる信号成分のうち、第１の周波数帯の信号成分
の通過を許す第１のバンドパスフイルタと、 前記第１、第２のサンプリングエリアから得ら
れる信号成分のうち、前記第１の周波数帯よりも
広い第２の周波数帯の信号成分の通過を許す第２
のバンドパスフイルタと、 前記第１、第２のバンドパスフイルタの出力を
選択する選択手段と、 第１のサンプリングエリアから得られる信号の
うち前記第１のバンドパスフイルタを通過した信
号と前記第２のバンドパスフイルタを通過した信
号との比である第１の値と、第２のサンプリング
エリアから得られる信号のうち前記第１のバンド
パスフイルタを通過した信号と前記第２のバンド
パスフイルタを通過した信号との比である第２の
値との比を算出する被写界深度算出手段と、 前記被写界深度算出手段によつて算出された被
写界深度をビユーフアインダに表示する手段とを
備えるカメラ。[Claims for Utility Model Registration] An imaging device; a first lens provided at the center of the imaging surface of the imaging device;
a sampling area, a second sampling area provided around the first sampling area, and a signal component in the first frequency band among the signal components obtained from the first and second sampling areas. a first bandpass filter that allows passage of a signal component in a second frequency band wider than the first frequency band among signal components obtained from the first and second sampling areas; 2
a band-pass filter; a selection means for selecting outputs of the first and second band-pass filters; a signal obtained from the first sampling area that has passed through the first band-pass filter; a first value that is a ratio of the signal that has passed through the second bandpass filter and the signal that has passed through the first bandpass filter among the signals obtained from the second sampling area and the second bandpass filter; a depth of field calculation means for calculating a ratio of a second value to a signal passing through the field, and a means for displaying the depth of field calculated by the depth of field calculation means on a viewfinder. A camera comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10640089U JPH071886Y2 (en) | 1989-09-11 | 1989-09-11 | camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10640089U JPH071886Y2 (en) | 1989-09-11 | 1989-09-11 | camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0345536U true JPH0345536U (en) | 1991-04-26 |
| JPH071886Y2 JPH071886Y2 (en) | 1995-01-18 |
Family
ID=31655130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10640089U Expired - Lifetime JPH071886Y2 (en) | 1989-09-11 | 1989-09-11 | camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH071886Y2 (en) |
-
1989
- 1989-09-11 JP JP10640089U patent/JPH071886Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH071886Y2 (en) | 1995-01-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |