JPS61184363U - - Google Patents
Info
- Publication number
- JPS61184363U JPS61184363U JP6420286U JP6420286U JPS61184363U JP S61184363 U JPS61184363 U JP S61184363U JP 6420286 U JP6420286 U JP 6420286U JP 6420286 U JP6420286 U JP 6420286U JP S61184363 U JPS61184363 U JP S61184363U
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- emitting diode
- light
- yellow
- light source
- 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
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Facsimile Scanning Arrangements (AREA)
Description
第１図は従来の密着形原稿読取装置の１例の断
面図、第２図は緑色及び黄色発光ダイオードの入
力電流に対する発光光度依存性を示した線図、第
３図は白原稿における光源を変えたときの受光素
子の明抵抗の違いを示した線図、第４図は発光ダ
イオードの入力電流に対する受光素子の明暗抵抗
比、第５図及び第６図は本考案にかかる実施例の
原稿読取装置用光源でありａ図は正面図、Ｂ図は
側面図、第７図は本考案にかかる光源を用いた場
合の入力電流に対する受光素子の明暗抵抗比（コ
ントラスト）の変化を示した線図、第８図は従来
の緑色及び黄色の発光ダイオードの発光波長特性
図、第９図は朱肉、赤スタンプ、カラーコード６
０５５赤の原稿色の反射率波長依存性を示した線
図である。
８……跛行ダイオードチツプ、９……黄色又は
緑色透明ドーム、１０……黄色又は緑色透明のシ
リンドリカルレンズ。
Figure 1 is a cross-sectional view of an example of a conventional contact type document reading device, Figure 2 is a diagram showing the dependence of luminous intensity on the input current of green and yellow light emitting diodes, and Figure 3 is a diagram showing the light source for a white original. A diagram showing the difference in the bright resistance of the light-receiving element when the light-receiving element is changed, Figure 4 is the brightness resistance ratio of the light-receiving element to the input current of the light-emitting diode, and Figures 5 and 6 are the manuscript of the embodiment according to the present invention. This is a light source for a reading device, and Figure A is a front view, Figure B is a side view, and Figure 7 is a line showing the change in brightness/darkness resistance ratio (contrast) of the light receiving element with respect to input current when using the light source according to the present invention. Figure 8 shows the emission wavelength characteristics of conventional green and yellow light emitting diodes, and Figure 9 shows vermilion, red stamp, and color code 6.
FIG. 2 is a diagram showing the reflectance wavelength dependence of the original color of 055 red. 8... Lame diode chip, 9... Yellow or green transparent dome, 10... Yellow or green transparent cylindrical lens.
Claims (1)
光源において、発光ダイオードアレイは、発光中
心波長が５６０〜５８０ｎｍの黄色発光ダイオー
ドチツプに黄色透明又は緑色透明のドームをかぶ
せ、その複数個を連接してアレイとしたものであ
ることを特徴とする原稿読取装置用光源。 In a light source for a document reading device using a light emitting diode array, the light emitting diode array is made by covering a yellow light emitting diode chip with a center emission wavelength of 560 to 580 nm with a transparent yellow or green dome, and connecting a plurality of the domes to form an array. A light source for a document reading device, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6420286U JPS61184363U (en) | 1986-04-30 | 1986-04-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6420286U JPS61184363U (en) | 1986-04-30 | 1986-04-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61184363U true JPS61184363U (en) | 1986-11-17 |
Family
ID=30595068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6420286U Pending JPS61184363U (en) | 1986-04-30 | 1986-04-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61184363U (en) |
-
1986
- 1986-04-30 JP JP6420286U patent/JPS61184363U/ja active Pending
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