[LIGHT SOURCE AND LENS ARRANGEMENT FOR BARCODE SCANNER]

• US 20070007351A1
• Filed: 07/07/2005
• Published: 01/11/2007
• Est. Priority Date: 07/07/2005
• Status: Abandoned Application

• Current Assignee: Marson Technology Co., Ltd.
• Original Assignee: Marson Technology Co., Ltd.
• Inventors: Hsiao, Ting-Hao
• Application Number:
  US11/160,763
• Publication Number:
  US 20070007351A1
• Time in Patent Office: Days
• US Class Current: 235/462.350
• CPC Class Codes: G06K 7/10574 Multiple sources
• CPC Class Codes: G06K 7/10693 for omnidirectional scanning

Abstract

A light source and lens arrangement used in a barcode scanner is disclosed to include a lens, and two light sources arranged at two opposite lateral sides of the lens for emitting light onto a barcode for enabling the lens to pick up the image of the barcode and to map the image onto an image plane, each light source including a light-emitting diode, and a mirror having a reflecting surface of anisocurvature design for reflecting light from the light-emitting element toward the barcode for enabling the lens to a bright image of the barcode in uniform brightness.

Claims

1. A light source and lens arrangement used in a barcode scanner, comprising a lens, and two light sources arranged at two opposite lateral sides of said lens and adapted to emit light onto a barcode for enabling said lens to pick up the image of the barcode and to map the image onto an image plane, wherein said light sources each comprise a light-emitting element, and a mirror disposed at one side relative to said light-emitting element, said mirror having a reflecting surface adapted to reflect light from said light-emitting element toward a predetermined direction, said reflecting surface having an anisocurvature.

2. The light source and lens arrangement as claimed in claim 1, wherein said light-emitting element is a light-emitting diode.

3. The light source and lens arrangement as claimed in claim 1, wherein said light emitting element is a laser light-emitting diode.

4. The light source and lens arrangement as claimed in claim 1, wherein said light sources each further comprise a condenser element disposed at one side of the respective light-emitting element opposite to the respective mirror for condensing light reflected by the respective mirror.