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Illumination arrangement for data readers

A technology of data readers and reflectors, applied in the direction of instruments, electromagnetic radiation induction, induction record carriers, etc., can solve the problems of unpleasant appearance, mixing together, etc.

Active Publication Date: 2013-06-05
DATALOGIC USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While rotationally symmetric reflectors, such as cylindrical reflective cones, are efficient at reflecting light from each LED, the inventors of the present invention have recognized that such cylindrically symmetric reflectors produce a circular appearance of light, and Does not mix the light from each LED together, thus creating light and dark areas in the illuminated area, and an unpleasant appearance

Method used

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  • Illumination arrangement for data readers
  • Illumination arrangement for data readers
  • Illumination arrangement for data readers

Examples

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Embodiment Construction

[0037] Although the following discussion refers to preferred embodiments having specific housing structures and light sources, the invention is not limited to the specific details discussed. The described features, structures, characteristics, and methods can be combined in any suitable manner in one or more embodiments. In view of the disclosure herein, those skilled in the art will recognize that the various embodiments may be practiced without one or more of the specific details or other methods, components, materials, etc. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the embodiments. For convenience, the present method and system may be described herein with reference to an in-counter or demonstration data reader having a solid-state imager and an LED light generator. However, it should be understood that the methods described herein are applicable to any data reader and any type of ...

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Abstract

Light sources (120, 121) are contained in a data reader housing (40) that also contains an imager (90). In one embodiment, one light source (121) includes a number of LEDs (130) placed in a number of hollow reflectors (140) located toward the rear of a data scanner(30), where the hollow reflectors (140) have substantially flat reflective surfaces (160) to project light through a window (50) and into a read volume (95). Other embodiments include additional light sources (127) located proximate sidewalls (75, 80) of the data scanner (30) and also include a number of LEDs (132) placed in hollow reflectors (230) to project light through the window (50) and into the read volume (95).; In other embodiments, additional LEDs (295) are included outside the hollow reflectors (300) to project light through the window (270) and into a different portion of the read volume (335) than the LEDs (295) located in the hollow reflectors (300).

Description

[0001] relevant application data [0002] This application claims priority to US Provisional Application No. 61 / 387390, filed September 28, 2010, and entitled "Lighting Apparatus for a Data Reader." technical field [0003] The present disclosure relates generally to lighting devices and systems for data readers, and in particular to such lighting devices and systems including light emitting diodes. Background technique [0004] The inventors of the present invention have recognized that in-counter and display data readers typically do not use solid-state imaging devices, such as charge-coupled device (CCD) imagers or complementary metal-oxide-semiconductor (CMOS) imagers, to capture data. The inventors of the present invention have also recognized that there are several challenges to including solid state imaging devices in in-counter and display data readers. One such challenge is placing the light source within the housing so that the read area is sufficiently illuminate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/10
CPCG06K7/10742G06K7/10831G06K7/10732
Inventor A·沙林P·R·胡斯
Owner DATALOGIC USA INC
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