JPS63196166U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の基本的構成を示す図、第２図
ａは発光素子アレイと光拡散板と原稿との関係を
走査方向に対して垂直な方向から見た図、第２図
ｂは横軸に走査方向を、縦軸に原稿面の照度をと
り、白波形出力を示した図、第３図は実施例１に
係るＬＥＤアレイとスリガラスと原稿との関係を
走査方向に対して垂直な方向から見た図、第４図
は実施例２に係るＬＥＤアレイとパールガラスと
原稿との関係を走査方向に対して垂直な方向から
見た図、第５図は従来の原稿読取り系を示す図、
第６図ａはＬＥＤアレイと原稿との関係を走査方
向に対して垂直な方向から見た図、第６図ｂは横
軸に走査方向を、縦軸に原稿面の照度をとり、白
波形出力を示した図である。 １……発光素子アレイ、１ａ……発光素子チツ
プ、２……原稿面、３……結像素子、４……受光
センサ、５……照射光路、６……光拡散板。 Figure 1 is a diagram showing the basic configuration of the present invention, Figure 2a is a diagram showing the relationship between the light emitting element array, the light diffusing plate, and the document, as seen from a direction perpendicular to the scanning direction, and Figure 2b is The horizontal axis represents the scanning direction, and the vertical axis represents the illuminance of the document surface, showing white waveform output. Figure 3 shows the relationship between the LED array, ground glass, and document according to Example 1, with the relationship perpendicular to the scanning direction. FIG. 4 is a diagram showing the relationship between the LED array, pearl glass, and document according to the second embodiment, viewed from a direction perpendicular to the scanning direction. FIG. 5 is a diagram showing the conventional document reading system. The figure shown,
Figure 6a shows the relationship between the LED array and the original as seen from a direction perpendicular to the scanning direction, and Figure 6b shows the white waveform with the horizontal axis representing the scanning direction and the vertical axis representing the illuminance of the original surface. It is a diagram showing the output. DESCRIPTION OF SYMBOLS 1...Light emitting element array, 1a...Light emitting element chip, 2...Document surface, 3...Imaging element, 4...Light receiving sensor, 5...Irradiation optical path, 6...Light diffusing plate.

Claims (1)

【実用新案登録請求の範囲】 (1) 光源に発光素子アレイを用い、発光素子の
照射光を原稿面に照射し、原稿面からの反射光を
結像素子を通して受光センサに結像させる原稿読
取り系において、発光素子アレイと原稿面との間
の照射光路に光拡散板を介装したことを特徴とす
る原稿読取り装置。 (2) 光拡散板がスリガラスである実用新案登録
請求の範囲第(1)項記載の原稿読取り装置。 (3) 光拡散板がパールガラスである実用新案登
録請求の範囲第(1)項記載の原稿読取り装置。[Claims for Utility Model Registration] (1) Document reading in which a light emitting element array is used as a light source, the light emitted from the light emitting elements is irradiated onto the document surface, and the reflected light from the document surface is imaged on a light receiving sensor through an imaging element. What is claimed is: 1. A document reading device characterized in that a light diffusing plate is interposed in an irradiation optical path between a light emitting element array and a document surface. (2) The document reading device according to claim (1) of the utility model registration, wherein the light diffusing plate is made of ground glass. (3) The document reading device according to claim 1, wherein the light diffusing plate is made of pearl glass.