READING DEVICE, INSPECTION DEVICE, AND READING SYSTEM
To provide a technique advantageous to a reading device by applying a rod lens array to a reduced optical system.SOLUTION: A reading device includes: a sensor; and a rod lens array including a plurality of rod lenses arranged along the direction of arrangement perpendicular to an optical axis. The r...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To provide a technique advantageous to a reading device by applying a rod lens array to a reduced optical system.SOLUTION: A reading device includes: a sensor; and a rod lens array including a plurality of rod lenses arranged along the direction of arrangement perpendicular to an optical axis. The rod lenses include a plurality of use lenses, which form a reading region into a small image on the sensor; and a plurality of non-use lenses, which do not form the reading region into an image on the sensor. At least one of the non-use lenses is arranged between adjacent ones of the use lenses.SELECTED DRAWING: Figure 1
【課題】ロッドレンズアレイを縮小光学系に適用した読取装置に有利な技術を提供する。【解決手段】センサと、光軸と交差する配列方向に沿って配列された複数のロッドレンズを含むロッドレンズアレイと、を備える読取装置であって、前記複数のロッドレンズは、読取領域を前記センサに縮小結像する複数の使用レンズと、前記読取領域を前記センサに結像しない複数の不使用レンズと、を含み、前記複数の使用レンズのうち互いに隣り合う使用レンズの間のそれぞれに、前記複数の不使用レンズのうち少なくとも1つの不使用レンズが配されている。【選択図】図1 |
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