KR900005908Y1 - Light projection device of bar code scanner - Google Patents
Light projection device of bar code scanner Download PDFInfo
- Publication number
- KR900005908Y1 KR900005908Y1 KR2019870011699U KR870011699U KR900005908Y1 KR 900005908 Y1 KR900005908 Y1 KR 900005908Y1 KR 2019870011699 U KR2019870011699 U KR 2019870011699U KR 870011699 U KR870011699 U KR 870011699U KR 900005908 Y1 KR900005908 Y1 KR 900005908Y1
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- KR
- South Korea
- Prior art keywords
- disk
- bar code
- projection device
- light projection
- code scanner
- 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
- G06K7/10554—Moving beam scanning
- G06K7/10594—Beam path
- G06K7/10603—Basic scanning using moving elements
- G06K7/10663—Basic scanning using moving elements using hologram
-
- 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
제1도는 본 고안의 개략적인 평면도.1 is a schematic plan view of the present invention.
제2도는 본 고안의 작동상태 일부 절취 정면도.Figure 2 is a front view of part of the operating state of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
3 : 회전판 4,4',4" : 제1반사경3: rotating plate 4,4 ', 4 ": first reflecting mirror
5,5',5" : 지지대 6,6',6" : 제2반사경5,5 ', 5 ": support 6,6', 6": second reflector
7 : 수광경 8 : 홀로그램디스크7: receiving mirror 8: hologram disc
본 고안은 모우터의 회전축 상부끝에 반사경을 3방향으로 부착하고 이에 대응하는 반사경을 길이가 각기 다른 3개의 지지대끝에 착설하여 레이저빔을 회전 입사시켜 주도록 한 바코드 스캐너의 광주사장치에 대한 것이다.The present invention relates to an optical scanning device of a barcode scanner that attaches a reflector in three directions to an upper end of a rotating shaft of a motor, and installs a reflector corresponding to the ends of three supports having different lengths to rotate the laser beam.
즉, 본원 고안은 길이가 각기 다른 3개의 지지대 끝에 반사경을 착설하여, 각 지지대를 동시에 회전시켜 주므로 이들 지지대에 착설된 반사경이 레이저빔을 교대로 홀로그램디스크의 각기 다른 부위에 입사시켜 3개의 주사선을 형성시켜 주므로 디스크의 크기를 종래에 비해 3분의 1정도로 대폭 줄일 수 있음을 물론 디스크의 형상도 원호상이 아닌 사각형상으로 만들어도 되기 때문에 디스크의 제작이 용이하게 되도록 하며, 사용면수(facet)도 줄일 수 있는 반면 반대로 주사된 수는 더 많이 늘릴 수 있도록하므로 본원출원인의 선출원고안인 광주사장치(특허출원 제87-3889호 및 실용신안 등록출원 제87-7169호) 에 비하여 주사밀도가 높고 소형이며, 지가격화를 기할 수 있도록 한 것으로 첨부도면에 의하여 상세히 설명하면 다음과 같다.That is, in the present invention, the reflectors are installed at the ends of three supports having different lengths, and the supports are rotated at the same time. Therefore, the reflectors mounted on the supports alternately inject the laser beam into different parts of the hologram disk to produce three scan lines. As a result, the size of the disk can be drastically reduced to about one third compared to the conventional one, and the shape of the disk can also be made into a square shape instead of an arc shape, so that the production of the disk can be facilitated. On the contrary, since the number of injections can be increased, the scanning density is higher than that of the Gwangju scanning device (patent application 87-3889 and utility model registration application 87-7169). It is compact and is intended to allow the price of land, and will be described in detail by the accompanying drawings as follows.
모우터(1) 에 의해 회전되는 회전축(2)의 상부에, 회전판(3)을 착설하고, 이 회전판(3)의 중앙에는 3방향으로 제1반사경(4)(4')(4")을 부착하며, 회전판(3)의 주면에는 3방향으로 길이가 각기 다른 지지대(5)(5')(5")를 연결시켜 그 끝에 제2반사경(6)(6')(6")을 각기 제1반사경(4)(4')(4") 에 대응하게 착설하며, 상부일측에는 수광경(7)을 하부 일측에는 원호상 또는 사각형상의 호로그램디스크(8)를 각각 고정 설치하여서 된 것이다.On the upper part of the rotating shaft 2 rotated by the motor 1, the rotating plate 3 is mounted, and in the center of this rotating plate 3, the first reflecting mirrors 4, 4 ', 4' are located in three directions. To the main surface of the rotating plate 3 to connect the support bars 5, 5 ', 5 "of different lengths in three directions, and attach the second reflectors 6, 6', 6" at the ends thereof. Each of them is installed to correspond to the first reflector 4, 4 ', 4 ", and is fixed by installing a light receiving mirror 7 on one upper side and an arc-shaped or rectangular arc-shaped disc 8 on one lower side. will be.
미설명 부호 "9"는 각 지지대에 뚫어진 레이저빔통과 공이고, "10,10'"는 제3,4반사경이며, "11"은 상품에 표기된 바코드이다.Reference numeral "9" denotes a laser beam through hole formed in each support, "10, 10 '" is a third and fourth reflecting mirrors, and "11" is a bar code marked on a product.
이와같이 구성된 본고안의 작동상태를 설명하면 다음과 같다.The operational state of the present proposal thus constructed is as follows.
모우터(1)의 구동으로 회전축(2) 에 의해 회전판(3) 이 회전되게하면 제1반사경(4)(4')(4") 및 제2반사경(6)(6')(6") 이 동시에 회전되는데 이때 제2도에서 보는 바와같이 레이저광원으로 부터 레이저빔(R) 이 제1반사경중 하나의 반사경(4)으로 입사되면 반사되어 해당지지대(5)의 끝에 착설된 제2반사경(6)으로 보내져 이 반사경(6) 에 의해 하부에 반사되어 지지대(5) 에 뚫어진 통과공(9)을 거쳐 홀로그램디스크(8) 에 입사되며, 이후 디스크(8)를 통과하면서 회절되어 제3,4의 반사경(10)(10')을 차례로 거쳐 상품의 바코드(11) 에 주사된다.When the rotating plate 3 is rotated by the rotating shaft 2 by the driving of the motor 1, the first reflecting mirror 4, 4 ', 4 "and the second reflecting mirror 6, 6', 6" ) Is rotated at the same time. As shown in FIG. 2, when the laser beam R is incident from the laser light source into the reflector 4 of one of the first reflecting mirrors, the second reflector mounted on the end of the corresponding support 5 is reflected. (6) is incident on the hologram disk (8) through the through hole (9), which is reflected by the reflector (6) to the lower part and drilled in the support (5), and is then diffracted while passing through the disk (8) to the third 4 are scanned via barcodes 11 and 10 'of the product in turn.
이러한 과정을 거친빔(R) 이 바코드(11) 에 주사되어 발생되는 산란광(R')은 역경로를 거쳐 수광경(7) 에 의해 수광부로 보내져 바코드를 읽게되는 것으로, 이와같은 작동은 계속 회전되는 회전판(3) 에 착설된 제1, 2의 반사경들에 의해 연속적으로 이루어지는 것이며, 이때 제1, 2의 반사경들에 의해 디스크(8) 에 입사되는 빔은 각 지지대(5)(5')(5")의 길이 차이에 따라 제1도에서 보는 바와같이 각기 다른 주사선(P)(P')(P")을 형성하게 되므로 디스크(8)의 공간면을 최대한으로 활용할 수 있게되는 것이다.The scattered light R 'generated by scanning the beam R through the above process is sent to the light-receiving unit by the light receiving mirror 7 via the reverse path to read the barcode, and the operation continues to rotate. The first and second reflectors mounted on the rotating plate 3 are continuously formed, and the beams incident on the disk 8 by the first and second reflectors are each support 5, 5 ′. As shown in FIG. 1, different scanning lines P, P ', and P "are formed according to the difference in length of 5", so that the space surface of the disk 8 can be utilized to the maximum.
이와같이 작동되는 본고안은 3개 제1반사경에 대응하여 길이가 각기다른 지지대의 끝에 제반사경을 착설하여 각 반사경들이 회전되도록 하였기 때문에 디스크에 입사되는 빔이 디스크의 공간면의 각기 다른 부위에 주사선을 형성토록 하므로 디스크의 유효면적을 최대한 활요할 수 있게되며, 이에따라 디스크의 크기를 대폭 축소시킬 수 있게됨은 물론 디스크의 형상도 원호상이 아닌 사각형상으로 성형하여도 되므로 제작도 용이하게 되는 등 매우 실용적인 고안이다.In this operation, the reflector is rotated by installing the reflector at the end of the support having different lengths in response to the three first reflectors, so that the beams incident on the disk are applied to different portions of the space of the disk. Because it can be formed, the effective area of the disk can be slid as much as possible. Accordingly, the size of the disk can be greatly reduced, and the shape of the disk can also be molded into a square shape instead of an arc shape, making it easy to manufacture. It is devised.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019870011699U KR900005908Y1 (en) | 1987-07-16 | 1987-07-16 | Light projection device of bar code scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019870011699U KR900005908Y1 (en) | 1987-07-16 | 1987-07-16 | Light projection device of bar code scanner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR890003330U KR890003330U (en) | 1989-04-13 |
| KR900005908Y1 true KR900005908Y1 (en) | 1990-06-30 |
Family
ID=19265340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019870011699U KR900005908Y1 (en) | 1987-07-16 | 1987-07-16 | Light projection device of bar code scanner |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR900005908Y1 (en) |
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1987
- 1987-07-16 KR KR2019870011699U patent/KR900005908Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR890003330U (en) | 1989-04-13 |
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