JPH0277963U

JPH0277963U -

Info

Publication number: JPH0277963U
Application number: JP15756788U
Authority: JP
Priority date: 1988-12-01
Filing date: 1988-12-01
Publication date: 1990-06-14

Description

[Brief explanation of the drawing]

第１図ａはこの考案の一実施例による赤外線カ
ツトフイルタの拡大図、第１図ｂはこの考案の一
実施例によるカラー原稿読取装置を示す断面図、
第２図ａは光電変換素子の分光感度特性図、第２
図ｂは白色光源の発色特性を示す特性図、第３図
は赤外線カツトフイルタを付けた時の分光感度特
性を示す特性図、第４図は従来のカラー原稿読取
装置を示す断面図である。図において、１は赤外線カツトフイルタ、２は
原稿支持ガラス板、３はカラー原稿、４はプラテ
ンローラ、５は白色光源、６はロツドレンズアレ
イ、７はカラーフイルタを付けたカラーセンサ、
８はセンサ駆動用基板を示す。なお、図中、同一
符号は同一、又は相当部分を示す。 FIG. 1a is an enlarged view of an infrared cut filter according to an embodiment of this invention, and FIG. 1b is a sectional view showing a color document reading device according to an embodiment of this invention.
Figure 2a is a spectral sensitivity characteristic diagram of the photoelectric conversion element;
Fig. b is a characteristic diagram showing the coloring characteristics of a white light source, Fig. 3 is a characteristic diagram showing spectral sensitivity characteristics when an infrared cut filter is attached, and Fig. 4 is a sectional view showing a conventional color original reading device. In the figure, 1 is an infrared cut filter, 2 is a document support glass plate, 3 is a color document, 4 is a platen roller, 5 is a white light source, 6 is a rod lens array, 7 is a color sensor with a color filter attached,
8 indicates a sensor driving board. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

A color original illuminated by a white light source is imaged by a rod lens on a photoelectric conversion element array with a color filter, and in a color original reading device that uses image information of the color original as an electrical signal, the infrared component of the white light source is removed. A color document reading device characterized in that a filter is provided within the reading device.