JPS62155567U - - Google Patents
Info
- Publication number
- JPS62155567U JPS62155567U JP2834286U JP2834286U JPS62155567U JP S62155567 U JPS62155567 U JP S62155567U JP 2834286 U JP2834286 U JP 2834286U JP 2834286 U JP2834286 U JP 2834286U JP S62155567 U JPS62155567 U JP S62155567U
- Authority
- JP
- Japan
- Prior art keywords
- information reading
- reading device
- reflecting mirror
- document
- fluorescent lamp
- 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 description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Facsimile Scanning Arrangements (AREA)
Description
第１図は本考案の一実施例を示す画像情報読み
取り装置における照明装置の断面図、第２図は同
平面図、第３図は本考案の反射鏡を設置しない場
合の原稿面照射部光量分布図、第４図は本考案の
反射鏡を設置した場合の原稿面照射部光量分布図
である。
１……蛍光灯、２……反射鏡、３……原稿面、
５……シエーデングペーパー、Ａ……反射鏡上の
一点、Ｂ……原稿面照射位置、Ｏ……蛍光灯中心
部、Ｆ……焦点。
Fig. 1 is a cross-sectional view of an illumination device in an image information reading device showing an embodiment of the present invention, Fig. 2 is a plan view of the same, and Fig. 3 is the amount of light at the document surface illumination section when the reflecting mirror of the present invention is not installed. Distribution diagram, FIG. 4 is a distribution diagram of the amount of light on the irradiated area of the document surface when the reflecting mirror of the present invention is installed. 1...Fluorescent lamp, 2...Reflector, 3...Document surface,
5... Shading paper, A... One point on the reflector, B... Document surface irradiation position, O... Center of fluorescent lamp, F... Focal point.
Claims (1)
蛍光灯の発散光を原稿面側に反射する反射鏡を備
えた画像情報読み取り装置の照明装置において、
蛍光灯の中心部Ｏと反射鏡の任意の一点Ａとの距
離ｕ、および、反射鏡の前記一点Ａと原稿面照射
位置Ｂとの距離ｖに対してｆ＝ｕ・ｖ／（ｕ＋ｖ
）なる焦点距離ｆを有し、かつ、∠ＯＡＣ＝∠Ｂ
ＡＣなる直線ＡＣ上に焦点Ｆが存在する円筒凹面
状反射鏡を設けたことを特徴とする画像情報読み
取り装置の照明装置。 (2) 前記円筒凹面状反射鏡の反射面積を蛍光灯
の長さ方向に沿つて端部側で広くなるように変化
させたことを特徴とする実用新案登録請求の範囲
第１項記載の画像情報読み取り装置の照明装置。[Scope of Claim for Utility Model Registration] (1) In an illumination device for an image information reading device that is equipped with a linear fluorescent lamp that illuminates the surface of the document and a reflector that reflects the diverging light of the fluorescent light toward the surface of the document,
f=u・v/(u+v
), and ∠OAC=∠B
An illumination device for an image information reading device, characterized in that a cylindrical concave reflecting mirror is provided with a focal point F on a straight line AC. (2) The image according to claim 1 of the utility model registration, characterized in that the reflection area of the cylindrical concave reflecting mirror is changed so that it becomes wider at the end side along the length direction of the fluorescent lamp. Lighting device for information reading device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2834286U JPS62155567U (en) | 1986-02-28 | 1986-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2834286U JPS62155567U (en) | 1986-02-28 | 1986-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62155567U true JPS62155567U (en) | 1987-10-02 |
Family
ID=30831209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2834286U Pending JPS62155567U (en) | 1986-02-28 | 1986-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62155567U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5386110A (en) * | 1977-01-07 | 1978-07-29 | Nec Corp | Light volume adjusting mechanism of facsimile device |
| JPS5852523A (en) * | 1981-09-24 | 1983-03-28 | Ishida Scales Mfg Co Ltd | Automatic weighing device |
| JPS5852573A (en) * | 1981-09-24 | 1983-03-28 | Mitsubishi Electric Corp | Power-factor transducer |
-
1986
- 1986-02-28 JP JP2834286U patent/JPS62155567U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5386110A (en) * | 1977-01-07 | 1978-07-29 | Nec Corp | Light volume adjusting mechanism of facsimile device |
| JPS5852523A (en) * | 1981-09-24 | 1983-03-28 | Ishida Scales Mfg Co Ltd | Automatic weighing device |
| JPS5852573A (en) * | 1981-09-24 | 1983-03-28 | Mitsubishi Electric Corp | Power-factor transducer |
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