JPS6289867U - - Google Patents
Info
- Publication number
- JPS6289867U JPS6289867U JP17988985U JP17988985U JPS6289867U JP S6289867 U JPS6289867 U JP S6289867U JP 17988985 U JP17988985 U JP 17988985U JP 17988985 U JP17988985 U JP 17988985U JP S6289867 U JPS6289867 U JP S6289867U
- Authority
- JP
- Japan
- Prior art keywords
- light
- document
- condensing member
- illumination device
- reflective
- 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 5
- 230000003287 optical effect Effects 0.000 claims 1
Landscapes
- Optical Elements Other Than Lenses (AREA)
- Lenses (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Facsimile Scanning Arrangements (AREA)
Description
第１図〜第２図は本考案の実施例を示しており
、第１図は本考案の原稿照明装置の斜視図、第２
図はその一部の側断面図を示し、第３図〜第４図
は、この実施例に係る装置の幅走査方向並びに主
走査方向の相対照度を示すグラフ図、また第５図
は従来の原稿照明装置の側断面図、第６図はその
フレネルレンズの正面図、第７図Ａ及びＢはこの
フレネルレンズの作用を説明する平面図及び側面
図をそれぞれ示している。
〔符号説明〕１……点光源、２……フレネルレ
ンズ、３……上部シリンドリカル型リフレクタ、
４……下部シリンダドリカル型リフレクタ、５…
…プラテン、６，７……黒色シート、８……スリ
ツト光。
1 and 2 show an embodiment of the present invention, FIG. 1 is a perspective view of the document illumination device of the present invention, and FIG.
The figure shows a side sectional view of a part of the device, and FIGS. 3 and 4 are graphs showing the relative illuminance in the width scanning direction and the main scanning direction of the apparatus according to this embodiment, and FIG. FIG. 6 is a side sectional view of the document illumination device, FIG. 6 is a front view of its Fresnel lens, and FIGS. 7A and 7B are a plan view and a side view, respectively, for explaining the function of this Fresnel lens. [Description of symbols] 1... Point light source, 2... Fresnel lens, 3... Upper cylindrical reflector,
4... lower cylinder drical type reflector, 5...
...Platen, 6, 7...Black sheet, 8...Slit light.
Claims (1)
平行光束とするフレネルレンズと、このフレネル
レンズ透過光を原稿面にスリツト状に集束させる
集光部材とを備え、原稿面若しくは集光部材を相
対的に移動させることにより原稿面をスリツト状
に順次照明するようにした原稿照明装置において
、上記集光部材の反射面には、上記光束の光軸周
辺成分からの反射光を抑える非反射部を形成した
ことを特徴とする原稿照明装置。 (2) 上記非反射部が、集光部材の反射面を部分
的に覆う遮光部材により形成されていることを特
徴とする実用新案登録請求の範囲第１項記載の原
稿照明装置。 (3) 上記非反射部が、集光部材の反射面を部分
的に取除いて形成されていることを特徴とする実
用新案登録請求の範囲第１項記載の原稿照明装置
。[Claims for Utility Model Registration] (1) A point light source, a Fresnel lens that converts the diffused light emitted from the point light source into a parallel light beam, and a condensing member that focuses the transmitted light of the Fresnel lens on the surface of the document in the form of a slit. In the document illuminating device, the document surface is sequentially illuminated in a slit shape by relatively moving the document surface or the light condensing member, and the reflective surface of the light condensing member has an area around the optical axis of the light beam. A document illumination device characterized in that a non-reflective portion is formed to suppress reflected light from components. (2) The document illumination device according to claim 1, wherein the non-reflective portion is formed of a light shielding member that partially covers the reflective surface of the light condensing member. (3) The document illumination device according to claim 1, wherein the non-reflective portion is formed by partially removing a reflective surface of a light condensing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17988985U JPS6289867U (en) | 1985-11-25 | 1985-11-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17988985U JPS6289867U (en) | 1985-11-25 | 1985-11-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6289867U true JPS6289867U (en) | 1987-06-09 |
Family
ID=31123353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17988985U Pending JPS6289867U (en) | 1985-11-25 | 1985-11-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6289867U (en) |
-
1985
- 1985-11-25 JP JP17988985U patent/JPS6289867U/ja active Pending