KR930005044Y1 - Optical apparatus for barcode scanner - Google Patents
Optical apparatus for barcode scanner Download PDFInfo
- Publication number
- KR930005044Y1 KR930005044Y1 KR2019900017873U KR900017873U KR930005044Y1 KR 930005044 Y1 KR930005044 Y1 KR 930005044Y1 KR 2019900017873 U KR2019900017873 U KR 2019900017873U KR 900017873 U KR900017873 U KR 900017873U KR 930005044 Y1 KR930005044 Y1 KR 930005044Y1
- Authority
- KR
- South Korea
- Prior art keywords
- optical device
- barcode
- light source
- polyhedron
- photodiode
- Prior art date
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Classifications
-
- 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
Abstract
내용 없음.No content.
Description
제1도는 종래 기술의 광학장치를 보인 구성도.1 is a block diagram showing an optical device of the prior art.
제2도는 종래 기술의 한 광학장치를 보인 구성도.2 is a block diagram showing an optical device of the prior art.
제3도는 본 고안의 광학장치를 보인 구성도.3 is a block diagram showing an optical device of the present invention.
제4도는 본 고안의 측면도.4 is a side view of the present invention.
제5도는 본 고안의 광학장치의 다른 실시형태를 보인 사시도.5 is a perspective view showing another embodiment of the optical device of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
11 : 광원 12 : 바코드 레벨면11 light source 12 barcode level surface
13 : 포토다이오드 14 : 다면경체13: photodiode 14: polyhedron
15, 15a, 15b : 구면경부 16 : 평면경부15, 15a, 15b: spherical neck portion 16: flat neck portion
본 고안은 바코드 레이저스캐너 광학장치에 관한 것으로, 특히 구조를 간단히하여 광학계의 어려운 정렬문제를 해결할 수 있도록 한 바코드 레이저스캐너의 광학장치에 관한 것이다.The present invention relates to an optical device for a barcode laser scanner, and more particularly, to an optical device for a barcode laser scanner capable of solving a difficult alignment problem of an optical system by simplifying a structure.
일반적으로 바코드 레이저스캐너는 판매시점관리, 창고관리등의 필수장비로 그 사용용도가 계속 확대되어 가고 있다.In general, the bar code laser scanner is an essential equipment for point-of-sale management, warehouse management, etc., and its use is continuously expanding.
바코드는 어두운 색의 바(bar)와 밝은색의 스페이스(space)의 배열로 구성되며, 물건에 부착된 바코드 라벨을 그 물건의 고유정보, 예를 들어 제조회사, 상품코드등의 정보를 담는다.The barcode consists of an array of dark bars and bright spaces, and the barcode label attached to the object contains the unique information of the object, for example, a manufacturer, a product code, and the like.
바토드 레이저 스캐너는 레이저빔을 바코드라벨위로 주사시켜 바와 스페이스의 반사율의 차이를 전기적 신호로 받아들인 다읔, 그 신호를 해독하고 주변장치가 판독된 데이타를 전송한다.The Bartod laser scanner scans the laser beam over a bar code label, accepts the difference in reflectance between bar and space as an electrical signal, decodes the signal, and transmits the read data to the peripheral.
레이저 스캐너의 기본구성은 광학부과 전기부로 나누어지며, 광학부는 다시 레이저 빔을 편향시켜 바코드 라벨위로 주사시키는 주사부와, 라벨에서 반사된 빛을 수광하여 포토다이오드로 접소시키는 수광부로 구성된다.The basic configuration of the laser scanner is divided into an optical unit and an electric unit. The optical unit is composed of a scanning unit which deflects the laser beam and scans the barcode onto a barcode label, and a light receiving unit which receives light reflected from the label and folds it into a photodiode.
종래시술의 바코드 레이저 스캐너의 광학장치는 그 전형적인 제1예를 제1도에 도시하고 제2의 예를 제2도에 도시한 바와 같다.The optical device of the conventional bar code laser scanner is as shown in FIG. 1 and a second example of a typical first example thereof.
즉 제1예의 종래기술은 주면에 수개의 평면경(1)이 배하여진 다면경체(2)로 구성되고 광원(3)으로부터의 입사광이 광원(3)의 전방에 배치되는 구면경(4)의 중앙에 뚫어놓은 입사공(5)를 통하여 다면경체(2)의 평면경(1)에 입사되고 여기에서 반사된 광선은 중심축선을 중심으로 하여 회전하는 다면경체(2)의 작용으로 바코드 라벨면(6)을 주사하고 반사광이 다시 다면경체(2)의 평면경(1)에서 구면경(4)으로 반사되며 반사광이 포토다이오드(7)에 수광되어 바코드라벨의 정보를 수신할 수 있게 되어 있다.That is, the prior art of the first example is composed of a multi-faceted mirror 2 in which several plane mirrors 1 are arranged on the main surface, and the incident light from the light source 3 is placed in the center of the spherical mirror 4 in front of the light source 3. The light incident on the planar mirror 1 of the polyhedron 2 through the drilled entrance hole 5 and the reflected light is rotated about the central axis, and the bar code label surface 6 is operated by the action of the polyhedron 2. The light is reflected back from the plane mirror 1 of the polyhedron 2 to the spherical mirror 4, and the reflected light is received by the photodiode 7 to receive the information of the barcode label.
또한 제2의 종래기술에 있어서는 광원(3')의 입사광이 평면경(4')위 중앙에 뚫어놓은 입사공(5')을 통하여 다면경체(2')에서 바코드 라벨면(6')을 주사하여 이루부터의 반사광이 단면경체(2')의 평면경(1')에서 광원전방의 평면경(4')으로 반사되고 이 평면경(4')에서 반사된 광선이 집속렌즈(8')를 통하여 포토다이오드(7')에 수광될 수 있게 되어 있다.In the second conventional technique, the bar code label surface 6 'is scanned from the polyhedron 2' through the incident hole 5 'centered on the plane mirror 4' in the incident light of the light source 3 '. Thus, the reflected light is reflected from the plane mirror 1 'of the cross-sectional mirror 2' to the plane mirror 4 'in front of the light source, and the light reflected from the plane mirror 4' is transmitted through the focusing lens 8 '. The light can be received by the diode 7 '.
그러나 이들 종래기술에 있어서는 다면경체 단순히 주사장치의 구실만을 할 뿐이어서 집속기능을 부여하여 스캐너의 광학구조를 간단하게 함과 아울러 광학장치의 정렬을 보다 간편하게 수행할 수 있도록 한 것인바, 이를 첨부도면의 의거하여 보다 상세히 설명하면 다음과 같다.However, in these prior arts, the polyhedron merely serves as a scanning device, thereby providing a focusing function to simplify the optical structure of the scanner and to more easily perform the alignment of the optical device. In more detail based on the following.
광원(11)으로부터의 광선을 바코드 레벨면(12)상에 주시하고 이로부터의 반사광을 집속하여 포토다이오드(13)에 집속할 수 있도록 한 다면경체(14)에 있어서, 이 다면경체(14)의 각면에 구면경부(15)와 평면경부(16)을 상하로 나란히 배설하여서 된 구조이다.In the polyhedron 14, the light beam from the light source 11 is focused on the barcode level surface 12 and the reflected light from the light source 11 can be focused on the photodiode 13. The spherical neck portion 15 and the planar neck portion 16 are arranged up and down side by side on each side of the structure.
이와 같이 본 고안에 있어서는 포토다이오드(13)에 인접하여 그 하측에 배치된 광원(11)로부터의 광선이 다면경체(14)의 평면경부(16)에서 반사되어 바코드 레벨면(12)에 주사되고 그 반사광은 다면경체(14)의 구면경부(15)에서 집속되어 포토다이오드(13)에 수광된다.As described above, in the present invention, the light beam from the light source 11 disposed below and adjacent to the photodiode 13 is reflected by the planar neck portion 16 of the polyhedron 14 and scanned on the barcode level surface 12. The reflected light is focused on the spherical mirror portion 15 of the polyhedral mirror 14 and received by the photodiode 13.
따라서, 별도의 집광수단을 필요로하지 않으며, 다면경체(14)의 구면경부(15)와 평면경부(16)의 배치설계에 따라 동일 방위에 광원과 포토다이오드를 배치하되 이들의 정렬상태가 간편하게 유지될 수 있도록 한다.Therefore, it does not require a separate light collecting means, and according to the arrangement design of the spherical diameter portion 15 and the planar diameter portion 16 of the multi-faceted body 14, the light source and the photodiode are arranged in the same orientation, but their alignment is easily To be maintained.
한편, 제5도는 본 고안의 다른 실시형태를 보인 것으로, 다면경체(14)의 각면에 구면경부(15a)(15b)가 상하로 분리되어 배설되고 그 중앙에 평면경부(16)가 배하여져 있는 구조로 되어 있다.Meanwhile, FIG. 5 shows another embodiment of the present invention, in which spherical diameter portions 15a and 15b are disposed up and down separately on each side of the polyhedral body 14, and the planar neck portion 16 is disposed at the center thereof. It is structured.
이와 같은 실시형태의 주사 및 집광기능은 싱기 실시형태와 유사하다.The scanning and condensing functions of this embodiment are similar to the thinner embodiments.
이 실시형태에서 구면경부(15a)(15b)과 평면경부(16)의 광축은 이들이 일치하면 광원과 포토다이오드가 동일직선상에 놓이게 되므로 구면경부와 평면경부의 배치각도를 약간 어긋나게 하여 배치하여야 할 것이다.In this embodiment, the optical axes of the spherical diameter portions 15a and 15b and the planar diameter portion 16 are aligned so that the light source and the photodiode are in the same straight line when they coincide with each other. will be.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019900017873U KR930005044Y1 (en) | 1990-11-20 | 1990-11-20 | Optical apparatus for barcode scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019900017873U KR930005044Y1 (en) | 1990-11-20 | 1990-11-20 | Optical apparatus for barcode scanner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR920010078U KR920010078U (en) | 1992-06-17 |
| KR930005044Y1 true KR930005044Y1 (en) | 1993-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019900017873U KR930005044Y1 (en) | 1990-11-20 | 1990-11-20 | Optical apparatus for barcode scanner |
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| Country | Link |
|---|---|
| KR (1) | KR930005044Y1 (en) |
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1990
- 1990-11-20 KR KR2019900017873U patent/KR930005044Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR920010078U (en) | 1992-06-17 |
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