KR930002268Y1 - Bae code scanner - Google Patents

Bae code scanner Download PDF

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Publication number
KR930002268Y1
KR930002268Y1 KR2019910001016U KR910001016U KR930002268Y1 KR 930002268 Y1 KR930002268 Y1 KR 930002268Y1 KR 2019910001016 U KR2019910001016 U KR 2019910001016U KR 910001016 U KR910001016 U KR 910001016U KR 930002268 Y1 KR930002268 Y1 KR 930002268Y1
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South Korea
Prior art keywords
reflected
mirror
laser
prism
laser beam
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KR2019910001016U
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Korean (ko)
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KR920015494U (en
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정재용
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금성기전 주식회사
김희수
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10554—Moving beam scanning
    • G06K7/10594—Beam path
    • G06K7/10603—Basic scanning using moving elements
    • G06K7/10613—Basic scanning using moving elements by rotation, e.g. polygon
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/10831—Arrangement of optical elements, e.g. lenses, mirrors, prisms
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G06K7/1404—Methods for optical code recognition
    • G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
    • G06K7/1413—1D bar codes

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

내용 없음.No content.

Description

바코드 스캐너 장치Barcode scanner device

제1도는 본 고안의 구성도.1 is a block diagram of the present invention.

제2도는 본 고안 장치에 사용되는 프리즘 모양 결합체의 사시도.2 is a perspective view of a prism-shaped assembly used in the device of the present invention.

제3도는 종래 장치의 구성도.3 is a block diagram of a conventional apparatus.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

2 : 회전 다면경 5 : 프리즘 모양 결합체2: rotating multifaceted mirror 5: prism shape assembly

6 : 구성 7 : 필터코팅부6 configuration 7: filter coating

8 : 평볼록 렌즈8: flat convex lens

본 고안은 바코드 레벨(Bar Code Label)상에 레이저빔을 주사하여 바코드의 시각적 정보를 독위하는 바코드 스캐너(Scanner)에 관한 것으로, 좀더 구체적으로는 광원으로부터 레이저빔을 주사하고 바코드 라벨로부터 반사되는 레이저빔을 집속하는 역할을 하는 광학기구를 개선하여 스캐너가 구조적으로 간단해짐은 물론 소형화가 가능해질 수 있게 한 것이다.The present invention relates to a barcode scanner that scans a laser beam on a bar code label to read visual information of a bar code. Improved optics, which focus the beam, make the scanner simpler in structure and smaller in size.

바코드 스캐너는 레이저빔을 회전하는 거울 또는 갈바노미러(Galvano Mirror)를 이용하여 바코드 라벨상에 주사시킨 후 라벨표면으로 부터 반사되는 빔의 세기를 탐지하고 탐지된 빛의 신호를 전기적 신호로 변환시키는 수단에 의해 본래의 바코드 라벨이 가지고 있는 시각적 정보를 전기적 신호로 바꾸어주는 장치이다.The barcode scanner scans the laser beam onto the barcode label using a rotating mirror or galvano mirror, detects the intensity of the beam reflected from the label surface, and converts the detected light signal into an electrical signal. It is a device that converts the visual information of the original barcode label into an electrical signal by means.

또한 바코드 스캐너는 디코더(Decoder)및 콘트롤러 등과 연결되어 하나의 시스템을 이루게 되며, 자재창고나 상품매장에서의 판매시점 관리 및 재고관리 또는 물품의 분류, 자동창고 시스템, 공장자동화 등에 널리 이용되고 있다.In addition, barcode scanners are connected to decoders and controllers to form a system, and are widely used for point-of-sale management and inventory management or sorting of goods, automatic warehouse systems, and factory automation.

종래에 일반적으로 사용되어온 바코드 스캐너 장치, 예를들어 제3도에 도시한 바와 같은 장치는 광원으로 사용되는 레이저(1), 레이저로 부터 나오는 레이저빔을 바코드 라벨(3)상으로 주사시키기 위한 회전다면경(2), 레이저빔과 반사빛을 분리시켜주는 구멍(12)이 뚫린 평면경(11), 평면경에서 반사되는 반사빔을 접속하여 탐지하는 접속렌즈(볼록렌즈) (13)와 필터(14)및 포토 다이오드(4)등으로 구성되어 있다.A bar code scanner device which has been generally used in the prior art, for example, as shown in FIG. 3, is a laser (1) used as a light source, and a rotation for scanning a laser beam from the laser onto a bar code label (3). A multifaceted mirror 2, a flat mirror 11 having a hole 12 separating the laser beam and reflected light, a connecting lens (convex lens) 13 and a filter 14 for connecting and detecting a reflected beam reflected from the flat mirror. ) And photodiode (4).

따라서 레이저(1)에서 레이저빔이 출사되면 평면경(11)의 구멍(12)을 통과한 후 회전다면경(2)의 거울면에 의해바코드 라벨(3)로 향하게 되고 회전 다면경(2)의 회전에 따라 레이저빔은 바코드 라벨(3)위를 주사하게 된다. 또한 바코드 라벨(3)위로 주사된 레이저 빔은 바코드 라벨(3)에서 산란되어 반사되고 반사된 빛은 회전다면경(2)에 의해 평면경(11)방향으로 반사된 후 평면경(11)에서 다시 집속렌즈(13)방향으로 반사되어 집속되며, 집속된 반사빔은 필터(14)를 거쳐 포토 다이오드(4)에 전달된다.Accordingly, when the laser beam is emitted from the laser 1, the laser beam passes through the hole 12 of the plane mirror 11, and then is directed to the bar code label 3 by the mirror surface of the rotation polygon mirror 2, As it rotates, the laser beam scans on the barcode label (3). In addition, the laser beam scanned onto the barcode label 3 is scattered and reflected by the barcode label 3 and the reflected light is reflected by the rotating mirror 2 in the direction of the plane mirror 11 and then focused again on the plane mirror 11. The reflected light is focused in the direction of the lens 13, and the focused reflected beam is transmitted to the photodiode 4 via the filter 14.

이때 필터(14)는 레이저빔과 동일한 파장을 가진 빛만 투과시키고 그 이외의 외란광은 차단시키는 역할을 수행하게 되며, 포토 다이오드(4)는 바코드 라벨(3)에서 반사된 레이저빔만을 탐지하여 전기적 신호로 변환시켜 주게 된다.In this case, the filter 14 transmits only the light having the same wavelength as the laser beam and blocks extraneous light. The photodiode 4 detects only the laser beam reflected from the barcode label 3 to be electrically Will be converted into a signal.

그러나 상기한 종래의 장치는 바코드 스캐너를 구성하기 의해 주사되는 레이저빔과 반사빔의 광로를 분리하기 위한 구멍이 뚫린 평면경(11), 반사빔의 집속을 위한 집속렌즈(13), 외란광의 차단을 위한 필터(14)등 여러가지의 부품을 필요로 하고 또한 이들 부품이 각기 다른 위치에 장착되어야 하므로 장치의 구성이 복잡해지고 제품의 소형화에 제약 요인이 된다.However, the above-mentioned conventional apparatus comprises a perforated flat mirror 11 for separating the optical path of the laser beam and the reflected beam scanned by configuring a barcode scanner, a focusing lens 13 for focusing the reflected beam, and blocking of extraneous light. Since various components such as the filter 14 for the filter are required, and these components must be mounted at different positions, the configuration of the apparatus becomes complicated and the size of the product becomes a limiting factor.

본 고안은 구멍 뚫린 평면경과 집속렌즈 및 필터를 프리즘 모양 결합체에 의해 일체화시켜 장치의 구성이 간단해질 수 있도록 한것인바, 본고안의 일실시예를 첨부된 도면 제1도와 제2도를 참조하여 더욱 상세히 설명하면 다음과 같다.The present invention is to simplify the configuration of the device by integrating the perforated flat mirror, the focusing lens and the filter by the prism-shaped combination, an embodiment of the present invention with reference to the accompanying drawings 1 and 2 It will be described in detail as follows.

레이저(1)로부터 나오는 레이저빔을 회전다면경(2)에 의해 바코드 라벨(3)위로 주사시키고 반사빔이 포토 다이오드(4)에 전달되도록 있게 한것에 있어서, 레이저와 회전다면경 사이에 구멍(6)을 가진 프리즘 모양 결합체(5)를 설치하여 이 결합체의 수직면에 외란광의 차단을 위한 필터코팅부(7)를 형성하고 수평면에는 평볼록렌즈(8)를 부착하여서 된것이다.The laser beam emitted from the laser 1 is scanned onto the barcode label 3 by means of the rotating polyscopy 2 and the reflected beam is transmitted to the photodiode 4, so that a hole (between the laser and the rotating polyscopy) 6) by installing a prism-shaped assembly (5) having a filter coating (7) for blocking extraneous light on the vertical surface of the assembly and a flat convex lens (8) on the horizontal surface.

이와같이 구성된 본 고안의 작용효과를 설명한다.The effect of the present invention configured as described above will be described.

먼저 레이저(1)로부터 나오는 레이저빔은 프리즘 모양 결합체(5)의 구멍(6)을 통과한 후 회전다면경(2)의 거울면에 의해 바코드 라벨(3)로 주사되어 산란, 반사되고 반사된 빛은 다시 회전다면경(2)을 통해 프리즘 모양 결합체(5)로 반사되는데, 이렇게 반사빔이 프리즘 모양 결합체로 반사될 때 수직면에 형성된 필터 코팅부(7)는 레이저빔과 동일한 파장을 가진 반사빔만 투과시키고 외란광은 차단시키는 역할을 하게 된다.First, the laser beam emitted from the laser 1 passes through the hole 6 of the prism-shaped assembly 5 and then is scanned by the mirror surface of the rotating face mirror 2 onto the barcode label 3 to be scattered, reflected and reflected. The light is reflected back to the prism-shaped assembly 5 through the rotating polyhedron 2, and when the reflected beam is reflected by the prism-shaped assembly, the filter coating 7 formed on the vertical plane has a reflection having the same wavelength as the laser beam. Only the beam is transmitted, and disturbing light is blocked.

또 필터코팅부(7)를 투과한 반사빔은 프리즘모양 결합체(5)의 빗면(경사면)에 부딪치게 되고 빗면에서 전반사(Total Reflection)를 일으켜, 광로가 직각 방향으로 꺽이게 된다.In addition, the reflected beam transmitted through the filter coating part 7 hits the inclined surface (inclined surface) of the prism-shaped assembly 5 and causes total reflection on the inclined surface, so that the optical path is bent in a right angle direction.

즉, 프리즘 모양 결합체(5)의 빗면이 거울면과 같은 역할을 하여 반사빔의 각도가 꺽이게 되며, 각도가 변화된 반사빔은 프리즘 모양 결합체(5)의 수평면에 부착된 평볼록 렌즈(8)에 의해 집속된 후 포토 다이오드(4)에, 전달되어 전기적 신호로 변환된다.That is, the inclined surface of the prism-shaped assembly 5 acts like a mirror surface so that the angle of the reflected beam is bent, and the reflected beam whose angle is changed is the flat convex lens 8 attached to the horizontal surface of the prism-shaped assembly 5. Is focused and then transmitted to the photodiode 4 and converted into an electrical signal.

상기 실시예에서는 프리즘 모양 결합체(5)의 수평면에 평볼록렌즈(8)를 부착한 일예를 설명하였으나 평볼록 렌즈는 플라스틱 성형에 의해 일체형으로 성형될 수도 있다.In the above embodiment, an example in which the flat convex lens 8 is attached to the horizontal plane of the prism-shaped assembly 5 has been described, but the flat convex lens may be integrally formed by plastic molding.

이상에서와 같이 본고안은 바코드 스캐너의 광학 기구를 이루는 평면경, 집속렌즈, 필터를 하나의 프리즘 모양 결합체(5)에 일체화하여 장치의 구성을 단순화시킬 수 있고 기구의 소형화가 가능해지며, 광로의 조정이 용이해지는 등의 효과가 있다.As described above, the present invention integrates the plane mirror, focusing lens, and filter constituting the optical mechanism of the barcode scanner into one prism-shaped combination 5 to simplify the configuration of the apparatus, and to miniaturize the apparatus, and to adjust the optical path. This has the effect of facilitating such ease.

Claims (2)

레이저(1)로부터 나오는 레이저빔을 회전다면경(2)에 의해 바코드 라벨(3)위로 주사하고 반사빔이 포토 다이오드(4)에 전달되도록 있게 한것에 있어서, 레이저와 회전다면경 사이에 구멍(6)을 가진 프리즘 모양 결합체(5)를 설치하여 이 결합체의 수직면에 외란광의 차단을 위한 필터코팅부(7)를 형성하고 수평면에는 평볼록렌즈(8)를 부착하여서 된 바코드 스캐너 장치.Scanning the laser beam from the laser 1 onto the bar code label 3 by means of a rotary face mirror 2 and causing the reflected beam to be transmitted to the photodiode 4, a hole between the laser and the faceted mirror. 6) Barcode scanner device by installing a prism-shaped assembly (5) having a filter coating (7) for blocking external light on the vertical surface of the assembly and a flat convex lens (8) on the horizontal surface. 제1항에 있어서, 평볼록렌즈가 프리즘 모양 결합체(5)에 일체로 성형된 바코드 스캐너 장치.The bar code scanner device according to claim 1, wherein the flat convex lens is integrally molded with the prismatic assembly (5).
KR2019910001016U 1991-01-24 1991-01-24 Bae code scanner KR930002268Y1 (en)

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KR2019910001016U KR930002268Y1 (en) 1991-01-24 1991-01-24 Bae code scanner

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KR2019910001016U KR930002268Y1 (en) 1991-01-24 1991-01-24 Bae code scanner

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KR930002268Y1 true KR930002268Y1 (en) 1993-05-03

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