JPH02120963U - - Google Patents
Info
- Publication number
- JPH02120963U JPH02120963U JP3044989U JP3044989U JPH02120963U JP H02120963 U JPH02120963 U JP H02120963U JP 3044989 U JP3044989 U JP 3044989U JP 3044989 U JP3044989 U JP 3044989U JP H02120963 U JPH02120963 U JP H02120963U
- Authority
- JP
- Japan
- Prior art keywords
- document
- light
- photoelectric conversion
- conversion means
- 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.)
- Granted
Links
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 16
- 239000011521 glass Substances 0.000 description 1
Landscapes
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Facsimile Scanning Arrangements (AREA)
Description
第１図〜第９図は本考案の画像読取装置の一実
施例を示す図であり、第１図はその画像読取装置
の要部斜視図、第２図はその蛍光灯保持ユニツト
部分の分解斜視図、第３図はその蛍光灯保持ユニ
ツト部分の斜視図、第４図は蛍光灯自体の光量分
布に補正を加えない場合の光電変換手段の出力分
布図、第５図は第３図の−矢視断面図、第６
図は第３図の−矢視断面図、第７図は反射板
による補正を施した場合の光電変換手段の出力分
布図、第８図は反射防止板による補正を施した場
合の光電変換手段の出力分布図、第９図は反射板
および反射防止板による補正を施した場合の光電
変換手段の出力分布図である。第１０図〜第１５
図は従来の画像読取装置の一例を示す図であり、
第１０図はその要部斜視図、第１１図は蛍光灯自
体の光量分布に補正を加えない場合の光電変換手
段の出力分布図、第１２図はシエーデイング板に
よる補正を施した場合の光電変換手段の出力分布
図、第１３図ａ，ｂはシエーデイング板が光路の
左右方向にずれている場合を示す図であり、第１
３図ａはそのシエーデイング板とレンズの関係を
示す図、第１３図ｂはそのときの光電変換手段の
出力分布図、第１４図ａ，ｂはシエーデイング板
が光路の上方向にずれている場合を示す図であり
、第１４図ａはそのシエーデイング板とレンズの
関係を示す図、第１４図ｂはそのときの光電変換
手段の出力分布図、第１５図ａ，ｂはシエーデイ
ング板にキズがある場合を示す図であり、第１５
図ａはそのシエーデイング板とレンズの関係を示
す図、第１５図ｂはそのときの光電変換手段の出
力分布図である。
１１……画像読取装置、１２ａ，１２ｂ……蛍
光灯、１３……蛍光灯保持ユニツト、１３ａ……
蛍光灯保持部材、１３ｂ……蛍光灯支えフレーム
、１３ｃ……光通過穴、１４ａ，１４ｂ……反射
板、１５ａ，１５ｂ……切り込み、１６ａ，１６
ｂ……反射防止板、１７……ターゲツトガラス、
１８……原稿、１９……光学系、２０……光電変
換手段。
1 to 9 are diagrams showing an embodiment of the image reading device of the present invention. FIG. 1 is a perspective view of the main parts of the image reading device, and FIG. 2 is an exploded view of the fluorescent lamp holding unit. FIG. 3 is a perspective view of the fluorescent lamp holding unit, FIG. 4 is a diagram of the output distribution of the photoelectric conversion means when no correction is applied to the light intensity distribution of the fluorescent lamp itself, and FIG. 5 is the same as that of FIG. 3. - Arrow sectional view, 6th
The figure is a sectional view taken along the - arrow in FIG. 3, FIG. 7 is an output distribution diagram of the photoelectric conversion means when correction is made with a reflector, and FIG. 8 is a diagram of the output distribution of the photoelectric conversion means when correction is made with an anti-reflection plate. FIG. 9 is an output distribution diagram of the photoelectric conversion means when correction is performed using a reflection plate and an antireflection plate. Figures 10 to 15
The figure shows an example of a conventional image reading device.
Fig. 10 is a perspective view of the main part, Fig. 11 is an output distribution diagram of the photoelectric conversion means when no correction is made to the light intensity distribution of the fluorescent lamp itself, and Fig. 12 is a photoelectric conversion when correction is made by a shading plate. The output distribution diagram of the means, Figures 13a and 13b are diagrams showing the case where the shedding plate is shifted in the left and right direction of the optical path, and the first
Figure 3a is a diagram showing the relationship between the shedding plate and the lens, Figure 13b is a diagram of the output distribution of the photoelectric conversion means at that time, and Figures 14a and b are when the shedding plate is shifted upward in the optical path. Fig. 14a is a diagram showing the relationship between the shedding plate and the lens, Fig. 14b is an output distribution diagram of the photoelectric conversion means at that time, and Figs. 15a and b are diagrams showing the relationship between the shedding plate and the lens. It is a diagram showing a certain case, and the 15th
Figure a is a diagram showing the relationship between the shading plate and the lens, and Figure 15b is a diagram of the output distribution of the photoelectric conversion means at that time. 11... Image reading device, 12a, 12b... Fluorescent lamp, 13... Fluorescent lamp holding unit, 13a...
Fluorescent lamp holding member, 13b... Fluorescent lamp support frame, 13c... Light passage hole, 14a, 14b... Reflection plate, 15a, 15b... Notch, 16a, 16
b...Anti-reflection plate, 17...Target glass,
18... Original, 19... Optical system, 20... Photoelectric conversion means.
Claims (1)
射光を光学系で縮小して光電変換手段に集光し、
光電変換手段で光電変換して原稿の画像を続み取
る画像続取装置において、前記蛍光灯の両端部付
近に蛍光灯からの光を原稿方向に反射する反射板
を配設し、蛍光灯の中央部付近に蛍光灯からの光
の原稿方向への反射を防止する反射防止板を配設
したことを特徴とする画像続取装置。 The document is irradiated with light from a fluorescent lamp, and the reflected light from the document is reduced by an optical system and focused on a photoelectric conversion means.
In an image succession device that continues an image of a document by photoelectrically converting it with a photoelectric conversion means, reflective plates are provided near both ends of the fluorescent light to reflect the light from the fluorescent light toward the document. An image succession device characterized in that an anti-reflection plate is disposed near the center of the apparatus to prevent light from a fluorescent lamp from being reflected toward a document.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989030449U JPH0749885Y2 (en) | 1989-03-16 | 1989-03-16 | Image reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989030449U JPH0749885Y2 (en) | 1989-03-16 | 1989-03-16 | Image reader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02120963U true JPH02120963U (en) | 1990-10-01 |
| JPH0749885Y2 JPH0749885Y2 (en) | 1995-11-13 |
Family
ID=31255529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989030449U Expired - Lifetime JPH0749885Y2 (en) | 1989-03-16 | 1989-03-16 | Image reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0749885Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6245271A (en) * | 1985-08-23 | 1987-02-27 | Matsushita Graphic Commun Syst Inc | Reader |
| JPS63197369U (en) * | 1987-06-11 | 1988-12-19 |
-
1989
- 1989-03-16 JP JP1989030449U patent/JPH0749885Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6245271A (en) * | 1985-08-23 | 1987-02-27 | Matsushita Graphic Commun Syst Inc | Reader |
| JPS63197369U (en) * | 1987-06-11 | 1988-12-19 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0749885Y2 (en) | 1995-11-13 |
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