JPS61208583A - Commercial goods code reading device - Google Patents

Abstract

PURPOSE:To enhance remarkably a vibration resistance and an impact resistance and enormously simplify a reading mechanism by providing an electric charge connecting element and a convex lens for light receiving of an image of a commercial goods in this electric charge connecting element. CONSTITUTION:An image of a commercial goods code is light received on a CCD through a convex lens to form an image and an electric charge emitting in accordance with a strength of the received light is accumulated in a memory, further scanned and operated on the memory, thereby to read the commercial goods code. For instance, a light signal of a commercial goods code 11 is illuminated on a CCD 13 through a convex lens 12, thereby the light signal being converted into an electric signal, decoded and a data being outputted to an external equipment.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a product code reading device.

[Conventional technology]

Conventionally, this type of product code reading device consists of a laser light source, a laser tube, a rotating mirror for laser beam propagation, a hologram disk, a scanning light receiving system optical unit, a photodiode, an electronic circuit, a motor, a power supply, and other electrical components. There is.

FIG. 2 is a perspective view of a conventional example of a reading mechanism of a product code reading device. The laser beam from the laser tube 1 is sent to the half mirror 2, one directly to the convex lens 4, the other reflected by the mirror 8 and sent to the other convex lens 5, and the light passing through the convex lens 4 passes through the photodiode 6. The light that has passed through the convex lens 5 is sent to one zone of the hologram disk 8 rotated by the DC motor 7, and is sent to the other zone of the hologram disk 8 via the photodiode 7. The light that has passed through each zone is sent to the mirror 10. Then, it is sent to the scanning pattern 14.

The product code is scanned with a laser beam, the received light signal of the product code is converted into an electrical signal, and the result is output as data to an external device.

[Problem that the invention seeks to solve]

In this way, conventional product code reading devices (1) use laser beams, so they are equipped with a complex laser system that requires careful handling (9 colors); various mirrors vibrate, or shocks are applied to them; There have been problems in that the scanning pattern is misaligned, making it impossible to read the product code, and 1) if the product code itself is soiled or cloudy, the product code reading rate decreases or becomes impossible.

[Means for solving problems]

The present invention replaces the laser beam, hologram disk, and various mirrors that constitute the conventional reading mechanism with C, C, D (
This device incorporates a charge-coupled device (charge-coupled device), which creates an image by receiving the image of the product code on C, C, and D through a convex lens, and stores the charge generated depending on the strength of the received light in memory. In addition, the product code is read by operating the vehicle in memory.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a reading mechanism in an embodiment of a product code reading device according to the present invention. By irradiating the optical signal of the product code 11 onto C, C, and D 1 B through the convex lens 12, the optical signal is converted into an electrical signal, decoded, and the data is output to an external device.

〔Effect of the invention〕

As explained above, by adopting C, C, and D, the present invention eliminates the need for a laser beam that requires careful handling, reduces the number of rotating mechanical parts, and eliminates all types of mirrors. Vibration resistant.

It is possible to significantly improve impact resistance and greatly simplify the reading mechanism, which has the effect of providing a product code reading device that is safe, has a long life, and is inexpensive.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an embodiment of a reading mechanism of a product code reading device according to the present invention, and FIG. 2 is a schematic diagram of a conventional reading mechanism. 11: Product code 12: Convex lens 18: C, C, D

Claims (1)

[Claims] A product code reading device comprising a charge-coupled device and a convex lens that causes the charge-coupled device to receive an image of a product code.