JPH0444059U - - Google Patents
Info
- Publication number
- JPH0444059U JPH0444059U JP8554190U JP8554190U JPH0444059U JP H0444059 U JPH0444059 U JP H0444059U JP 8554190 U JP8554190 U JP 8554190U JP 8554190 U JP8554190 U JP 8554190U JP H0444059 U JPH0444059 U JP H0444059U
- Authority
- JP
- Japan
- Prior art keywords
- light
- light source
- wavelength band
- pair
- paired
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 8
- 238000012015 optical character recognition Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 108010043121 Green Fluorescent Proteins Proteins 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
Landscapes
- Character Input (AREA)
Description
第１図は本考案の第一の実施例の構成を示す斜
視図、第２図は第１図の実施例の矢印方向から光
学フイルタと蛍光ランプを見た側面図、第３図は
第１図の実施例における蛍光ランプの発光波長特
性図、第４図は第１図の実施例における光学フイ
ルタの透過及び反射特性図、第５図は第１図の実
施例における光学フイルタの動作説明図、第６図
は本考案の第二の実施例の構成を示す斜視図、第
７図は第６図の実施例の矢印方向から光学フイル
タと蛍光ランプを見た側面図、第８図は第６図の
実施例における光学フイルタの動作説明図、第９
図は従来の光学文字読取装置の第一例を示す斜視
図、第１０図は従来の光学文字読取装置の第二例
を示す斜視図である。
１，２，１ａ，２ａ……光学フイルタ、３……
緑色蛍光ランプ、４……近赤外蛍光ランプ、５…
…帳票、６……視野、７……緑色光、８……反射
光、９……光線、１０〜１２……反射光、１３ａ
，１３ｂ……反射板、２０……光学レンズ、２１
……イメージセンサ。
FIG. 1 is a perspective view showing the configuration of the first embodiment of the present invention, FIG. 2 is a side view of the embodiment shown in FIG. FIG. 4 is a transmission and reflection characteristic diagram of the optical filter in the embodiment shown in FIG. 1. FIG. 5 is an explanatory diagram of the operation of the optical filter in the embodiment shown in FIG. 1. , FIG. 6 is a perspective view showing the configuration of a second embodiment of the present invention, FIG. 7 is a side view of the embodiment shown in FIG. 6, as seen from the direction of the arrow, and FIG. An explanatory diagram of the operation of the optical filter in the embodiment of FIG. 6, No. 9
This figure is a perspective view showing a first example of a conventional optical character reading device, and FIG. 10 is a perspective view showing a second example of a conventional optical character reading device. 1, 2, 1a, 2a...optical filter, 3...
Green fluorescent lamp, 4... Near-infrared fluorescent lamp, 5...
...Form, 6...Field of view, 7...Green light, 8...Reflected light, 9...Light ray, 10-12...Reflected light, 13a
, 13b... Reflection plate, 20... Optical lens, 21
...Image sensor.
Claims (1)
発光を行なつて、光学的に読み取るべき原稿の共
通の照射領域を照射する一対２個の光源と、前記
２個の光源のそれぞれと前記照射領域との間に配
設し、対をなす光源の波長帯域の光線を透過する
とともに対をなす光源の波長帯域以外の光線は反
射する一対２個の光学フイルタとを備えて成るこ
とを特徴とする光学文字読取装置。 a pair of two light sources arranged adjacent to each other in parallel and emitting light in different wavelength bands to illuminate a common irradiation area of a document to be optically read; and each of the two light sources and the irradiation; and a pair of two optical filters disposed between the light source and the light source to transmit light in the wavelength band of the paired light source and reflect light in the wavelength band other than the wavelength band of the paired light source. optical character reader.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990085541U JP2546319Y2 (en) | 1990-08-13 | 1990-08-13 | Optical character reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990085541U JP2546319Y2 (en) | 1990-08-13 | 1990-08-13 | Optical character reader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0444059U true JPH0444059U (en) | 1992-04-14 |
| JP2546319Y2 JP2546319Y2 (en) | 1997-08-27 |
Family
ID=31816847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990085541U Expired - Fee Related JP2546319Y2 (en) | 1990-08-13 | 1990-08-13 | Optical character reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2546319Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60146567A (en) * | 1984-01-10 | 1985-08-02 | Sharp Corp | Color picture reader |
-
1990
- 1990-08-13 JP JP1990085541U patent/JP2546319Y2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60146567A (en) * | 1984-01-10 | 1985-08-02 | Sharp Corp | Color picture reader |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2546319Y2 (en) | 1997-08-27 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |