JPH0320337U - - Google Patents
Info
- Publication number
- JPH0320337U JPH0320337U JP8098489U JP8098489U JPH0320337U JP H0320337 U JPH0320337 U JP H0320337U JP 8098489 U JP8098489 U JP 8098489U JP 8098489 U JP8098489 U JP 8098489U JP H0320337 U JPH0320337 U JP H0320337U
- Authority
- JP
- Japan
- Prior art keywords
- light
- scanning direction
- main scanning
- contact glass
- face
- 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
- 239000011521 glass Substances 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Optical Systems Of Projection Type Copiers (AREA)
- Facsimile Scanning Arrangements (AREA)
- Holders For Sensitive Materials And Originals (AREA)
Description
第１図は光学式画像読取り装置の概略的構成図
、第２図はコンタクトガラス部分における照射光
の主要光路を示す拡大図、第３図はコンタクトガ
ラスの斜視図とその主走査方向に関する端面の光
反射率の変化を示す図、第４図は主走査方向につ
いての読取りライン照射光量の変化を示すグラフ
である。
１……光源、２……コンタクトガラス、３……
原稿、２ａ……主走査方向端面、１２……ミラー
、１３……集光レンズ、１４……受光素子アレイ
、２０……読取りライン、Ｓ１，Ｓ１……光路。
Fig. 1 is a schematic configuration diagram of an optical image reading device, Fig. 2 is an enlarged view showing the main optical path of irradiation light in the contact glass portion, and Fig. 3 is a perspective view of the contact glass and its end face in the main scanning direction. FIG. 4 is a graph showing changes in the amount of light irradiated on the reading line in the main scanning direction. 1...Light source, 2...Contact glass, 3...
Document, 2a... End face in main scanning direction, 12... Mirror, 13... Condensing lens, 14... Light receiving element array, 20... Reading line, S1, S1... Optical path.
Claims (1)
り原稿面に照射し、その反射光をコンタクトガラ
スと光学系を介して受光素子へ集光させる光学式
画像読取り装置において、 読取り原稿の案内機能を有したコンタクトガラ
スの主走査方向端面を光反射面として構成すると
共に、該主走査方向端面を原稿読取りラインの近
傍で且つ同ラインに対して平行に配置せしめたこ
とを特徴とする光学式画像読取り装置。 (2) コンタクトガラスの主走査方向端面の光反
射率を、主走査方向に関して両端部の光反射率が
中央部の光反射率に比較して大きくなるように構
成した請求項(1)の光学式画像読取り装置。[Claims for Utility Model Registration] (1) An optical image reading device that irradiates light from a light source onto the surface of a read document through a contact glass, and focuses the reflected light onto a light receiving element through the contact glass and an optical system. In the present invention, the end face in the main scanning direction of the contact glass having the function of guiding the document to be read is configured as a light reflecting surface, and the end face in the main scanning direction is arranged near the document reading line and parallel to the same line. An optical image reading device characterized by: (2) The optical system according to claim (1), wherein the light reflectance of the end face in the main scanning direction of the contact glass is configured such that the light reflectance at both ends is larger than the light reflectance at the center in the main scanning direction. type image reading device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8098489U JPH0320337U (en) | 1989-07-10 | 1989-07-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8098489U JPH0320337U (en) | 1989-07-10 | 1989-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0320337U true JPH0320337U (en) | 1991-02-27 |
Family
ID=31626516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8098489U Pending JPH0320337U (en) | 1989-07-10 | 1989-07-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0320337U (en) |
-
1989
- 1989-07-10 JP JP8098489U patent/JPH0320337U/ja active Pending
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