JPH02134774U - - Google Patents
Info
- Publication number
- JPH02134774U JPH02134774U JP4389289U JP4389289U JPH02134774U JP H02134774 U JPH02134774 U JP H02134774U JP 4389289 U JP4389289 U JP 4389289U JP 4389289 U JP4389289 U JP 4389289U JP H02134774 U JPH02134774 U JP H02134774U
- Authority
- JP
- Japan
- Prior art keywords
- light
- light source
- document
- wavelength
- reading device
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 1
Landscapes
- Facsimile Scanning Arrangements (AREA)
Description
第１図〜第４図は本考案の画像読取装置の一実
施例を示す図であり、第１図はその画像読取装置
の光学系を示す図、第２図はそのＣＣＤイメージ
センサの分光感度特性図、第３図はその冷陰極Ｘ
ｅランプの主走査方向の発光色の変化の様子を示
す図、第４図はその作用説明図である。第５図は
従来の画像読取装置の光学系を示す図である。
１１……画像読取装置、１２……冷陰極Ｘｅラ
ンプ（光源）、１３……原稿、１４……レンズ、
１５……ＣＣＤイメージセンサ（光電変換手段）
。
1 to 4 are diagrams showing one embodiment of the image reading device of the present invention, FIG. 1 is a diagram showing the optical system of the image reading device, and FIG. 2 is a diagram showing the spectral sensitivity of the CCD image sensor. Characteristic diagram, Figure 3 shows the cold cathode
FIG. 4 is a diagram showing how the emitted light color of the e-lamp changes in the main scanning direction, and is an explanatory diagram of its operation. FIG. 5 is a diagram showing an optical system of a conventional image reading device. 11... Image reading device, 12... Cold cathode Xe lamp (light source), 13... Document, 14... Lens,
15...CCD image sensor (photoelectric conversion means)
.
Claims (1)
光源と、該原稿で反射された光を受光し光電変換
するとともに光の波長によりその感度特性の変化
する光電変換手段と、を備えた画像読取装置にお
いて、光源の光の波長を光源の長手方向で変化さ
せたことを特徴とする画像読取装置。 An image that includes a light source that is disposed long in the main scanning direction and irradiates light onto a document, and a photoelectric conversion means that receives and photoelectrically converts the light reflected by the document, and whose sensitivity characteristics change depending on the wavelength of the light. An image reading device characterized in that the wavelength of light from a light source is changed in the longitudinal direction of the light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4389289U JPH02134774U (en) | 1989-04-14 | 1989-04-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4389289U JPH02134774U (en) | 1989-04-14 | 1989-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02134774U true JPH02134774U (en) | 1990-11-08 |
Family
ID=31556701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4389289U Pending JPH02134774U (en) | 1989-04-14 | 1989-04-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02134774U (en) |
-
1989
- 1989-04-14 JP JP4389289U patent/JPH02134774U/ja active Pending