JPH01108664U - - Google Patents
Info
- Publication number
- JPH01108664U JPH01108664U JP434788U JP434788U JPH01108664U JP H01108664 U JPH01108664 U JP H01108664U JP 434788 U JP434788 U JP 434788U JP 434788 U JP434788 U JP 434788U JP H01108664 U JPH01108664 U JP H01108664U
- Authority
- JP
- Japan
- Prior art keywords
- light
- light source
- document
- shaped
- lighting 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
- 238000005286 illumination Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 1
Landscapes
- Facsimile Scanning Arrangements (AREA)
- Facsimile Image Signal Circuits (AREA)
Description
第１図はこの考案の照明装置の原理を示す図、
第２図はこの考案の一実施例である蛍光灯の外観
図、第３図はその光量特性を示す図、第４図はこ
の考案の他の実施例を示す蛍光灯の外観図、第５
図はその光量特性を示す図、第６図は従来の照明
装置の概略構成図、第７図Ａはその蛍光灯の外観
図、第７図Ｂはその横断面図、第８図は従来の照
明装置のシエーデイング特性を示す図である。
１，１０，２０……蛍光灯、２，１１，２１…
…アパーチヤー、２２……ガラス管、２３……蛍
光膜、２４……反射膜、３０……原稿、３１……
レンズ系、３２……受光手段。
Figure 1 is a diagram showing the principle of the lighting device of this invention.
Fig. 2 is an external view of a fluorescent lamp which is an embodiment of this invention, Fig. 3 is a diagram showing its light quantity characteristics, Fig. 4 is an external view of a fluorescent lamp which is another embodiment of this invention, and Fig. 5 is an external view of a fluorescent lamp which is an embodiment of this invention.
The figure shows its light quantity characteristics, Figure 6 is a schematic configuration diagram of a conventional lighting device, Figure 7A is an external view of the fluorescent lamp, Figure 7B is its cross-sectional view, and Figure 8 is a conventional illumination device. It is a figure showing the shading characteristic of a lighting device. 1, 10, 20...fluorescent light, 2, 11, 21...
... Aperture, 22 ... Glass tube, 23 ... Fluorescent film, 24 ... Reflection film, 30 ... Original, 31 ...
Lens system, 32...light receiving means.
Claims (1)
の反射光又は透過光を読取るようになつている照
明装置において、前記光源のシエーデイング補正
をするような開口形状のアパーチヤーが前記光源
に設けられていることを特徴とする照明装置。 In an illumination device that irradiates light onto a document with a line-shaped light source and reads reflected light or transmitted light of the document, the light source is provided with an aperture shaped like an opening for correcting shading of the light source. A lighting device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP434788U JPH01108664U (en) | 1988-01-18 | 1988-01-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP434788U JPH01108664U (en) | 1988-01-18 | 1988-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01108664U true JPH01108664U (en) | 1989-07-24 |
Family
ID=31206782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP434788U Pending JPH01108664U (en) | 1988-01-18 | 1988-01-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01108664U (en) |
-
1988
- 1988-01-18 JP JP434788U patent/JPH01108664U/ja active Pending