Optical information read-in device

Optical information read-in device

Provided is an optical information read-in device, comprising: a light projection system (3) which projects light from light sources (30) upon a barcode, etc., by light projection lenses (31, 32); and a photoreceptor system (4) which receives reflected light upon an image capture element (40) by a p...

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Hauptverfasser: YAMANOUCHI MASAYOSHI, OKAMOTO SOHEI
Format: Patent
Sprache:chi ; eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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creator YAMANOUCHI MASAYOSHI
OKAMOTO SOHEI
description Provided is an optical information read-in device, comprising: a light projection system (3) which projects light from light sources (30) upon a barcode, etc., by light projection lenses (31, 32); and a photoreceptor system (4) which receives reflected light upon an image capture element (40) by a photoreceptor lens (41). The light projection system (3) projects light (Lf) in a band-shaped range which is long in a prescribed direction in a light projection plane (S) which is approximately orthogonal to an optical axis (X) of the photoreceptor lens (41), and which is narrow in a width direction which is approximately orthogonal to the longitudinal direction thereof. Entry surfaces (31a, 32a) of the light projection lenses (31, 32) form uniform depression shapes in the longitudinal direction, and form uniform protrusion shapes in the width direction. Meanwhile, emission surfaces (31b, 32b) thereof form free-form surfaces so as to form a prescribed light quantity distribution in the longitudinal direction of the
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The light projection system (3) projects light (Lf) in a band-shaped range which is long in a prescribed direction in a light projection plane (S) which is approximately orthogonal to an optical axis (X) of the photoreceptor lens (41), and which is narrow in a width direction which is approximately orthogonal to the longitudinal direction thereof. Entry surfaces (31a, 32a) of the light projection lenses (31, 32) form uniform depression shapes in the longitudinal direction, and form uniform protrusion shapes in the width direction. 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subjects CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
title Optical information read-in device
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