JPS62143355U - - Google Patents
Info
- Publication number
- JPS62143355U JPS62143355U JP3045086U JP3045086U JPS62143355U JP S62143355 U JPS62143355 U JP S62143355U JP 3045086 U JP3045086 U JP 3045086U JP 3045086 U JP3045086 U JP 3045086U JP S62143355 U JPS62143355 U JP S62143355U
- Authority
- JP
- Japan
- Prior art keywords
- solid
- light source
- image sensor
- block
- state 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.)
- Pending
Links
- 230000035945 sensitivity Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Facsimile Scanning Arrangements (AREA)
Description
第１図は本考案の一実施例の概略ブロツク図、
第２図は従来の縮小タイプの画像読取り装置の概
略構成図、第３図は従来の密着タイプの画像読取
り装置の概略構成図、第４図は固体イメージセン
サのピクセル毎の感度を表すグラフである。
１１…固体イメージセンサ、１２ａ〜１２ｄ…
光源、１３…光源駆動装置、１４…減算器、１５
…アナログ加算器、１６…Ａ／Ｄ変換器、１７…
マイコン。
FIG. 1 is a schematic block diagram of an embodiment of the present invention.
Figure 2 is a schematic configuration diagram of a conventional reduction type image reading device, Figure 3 is a schematic configuration diagram of a conventional contact type image reading device, and Figure 4 is a graph showing the sensitivity of each pixel of a solid-state image sensor. be. 11... Solid-state image sensor, 12a to 12d...
Light source, 13... Light source driving device, 14... Subtractor, 15
...Analog adder, 16...A/D converter, 17...
Microcomputer.
Claims (1)
センサと、該固体イメージセンサを複数個のブロ
ツクに分け、各々のブロツクに対応して配置され
た原稿照射用の光源と、該ブロツク毎の固体イメ
ージセンサの感度差を決定する手段と、該感度差
に応じて前記光源の光量を調節する手段とを具備
し、前記固体イメージセンサの感度の高いブロツ
クに対応する光源の光量を下げる調節および該固
体イメージセンサの感度の低いブロツクに対応す
る光源の光量を上げる調節の少なくとも一つの調
節を行なうようにしたことを特徴とする画像読取
り装置。 A solid-state image sensor that converts an image into an electrical signal and reads it; a light source for illuminating a document that is divided into a plurality of blocks and arranged corresponding to each block; and a solid-state image sensor for each block. and means for adjusting the light intensity of the light source in accordance with the sensitivity difference, and adjusting to lower the light intensity of the light source corresponding to a highly sensitive block of the solid-state image sensor and the solid-state image sensor. An image reading device characterized in that at least one adjustment is made to increase the amount of light from a light source corresponding to a block of low sensor sensitivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3045086U JPS62143355U (en) | 1986-03-03 | 1986-03-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3045086U JPS62143355U (en) | 1986-03-03 | 1986-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62143355U true JPS62143355U (en) | 1987-09-10 |
Family
ID=30835269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3045086U Pending JPS62143355U (en) | 1986-03-03 | 1986-03-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62143355U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5685975A (en) * | 1979-12-14 | 1981-07-13 | Fujitsu Ltd | Uniform illumination method |
-
1986
- 1986-03-03 JP JP3045086U patent/JPS62143355U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5685975A (en) * | 1979-12-14 | 1981-07-13 | Fujitsu Ltd | Uniform illumination method |