KR940002823Y1 - Optical apparatus of barcode scanner - Google Patents

Optical apparatus of barcode scanner Download PDF

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Publication number
KR940002823Y1
KR940002823Y1 KR2019890010842U KR890010842U KR940002823Y1 KR 940002823 Y1 KR940002823 Y1 KR 940002823Y1 KR 2019890010842 U KR2019890010842 U KR 2019890010842U KR 890010842 U KR890010842 U KR 890010842U KR 940002823 Y1 KR940002823 Y1 KR 940002823Y1
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KR
South Korea
Prior art keywords
barcode scanner
galvanometer
optical device
flat mirror
photodetector
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Application number
KR2019890010842U
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Korean (ko)
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KR910003157U (en
Inventor
김영식
Original Assignee
주식회사 금성사
최근선
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Priority to KR2019890010842U priority Critical patent/KR940002823Y1/en
Publication of KR910003157U publication Critical patent/KR910003157U/en
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Publication of KR940002823Y1 publication Critical patent/KR940002823Y1/en

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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
    • G06K7/10712—Fixed beam scanning
    • G06K7/10722—Photodetector array or CCD scanning
    • 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

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (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 스캐너의 광학장치Barcode Scanner Optics

제 1 도는 일반적인 바코드 스캐너 광학장치 구성 및 작용을 보인 평면도.1 is a plan view showing the construction and operation of a typical barcode scanner optics.

제 2 도는 본 고안에 의한 바코드 스캐너의 광학장치 구성 및 작용을 보인 측면도.2 is a side view showing the construction and operation of the optical device of the barcode scanner according to the present invention.

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

11 : 레이저 다이오드 12 : 볼록렌즈11 laser diode 12 convex lens

13 : 갤비노미터 14 : 평년거울13: galbinometer 14: ordinary mirror

15 : 프레넬 렌즈 16 : 포토 디텍터15: Fresnel lens 16: Photo detector

본 고안은 바코드 스캐너의 광학장치에 관한 것으로, 특히 포터디텍터의 설치를 용이하게 하고 경박단소한 바코드 스캐너의 광학장치에 관한 것이다.The present invention relates to an optical device of a barcode scanner, and more particularly to an optical device of a barcode scanner that facilitates the installation of a port detector and is light and simple.

일반적으로 사용되는 바코드 스캐너의 광학장치는 제 1 도에 도시한 바와같이, 갤버노미터(galvonometer) (1)와, 상기 갤비노미터 (1)에 결합되는 평면거울 (2)이 코팅된 오목거울 (3)과, 레이저 다이오드 (4)와, 포토디텍터 (5)와, 볼록렌즈 (6)등으로 구성되어 있는 바, 상기한 바와같은 바코드 스캐너의 광학장치는 레이저 다이오드 (4)에서 발생된 레이저 뱀을 볼록렌즈 (6)에 의하여 접속되어 갤비노미터 (1)로 좌, 우 회전되는 오목거울 (3)의 평면거울 (2)에 의하여 바코드 (7)의 면을 스캔하게 되며, 상기 바코드 (7)면에서 난반사된 레이저 빔은 오목거울 (3)에 의하여 포토디텍터 (5)로 집속되어 전기적 신호로 변환된다.A commonly used optical device of a barcode scanner is a concave mirror coated with a galvonometer (1) and a flat mirror (2) coupled to the galvanometer (1), as shown in FIG. (3), laser diode (4), photodetector (5), convex lens (6), etc., the optical device of the barcode scanner as described above is a laser generated by the laser diode (4). The surface of the barcode 7 is scanned by the flat mirror 2 of the concave mirror 3 which is connected to the snake by the convex lens 6 and is rotated left and right by the galvanometer 1. The laser beam diffused from the plane 7) is focused by the concave mirror 3 to the photodetector 5 and converted into an electrical signal.

그러나, 상기한 바와같은 바코드 스캐너의 광학장치는 평면거울(2)이 코팅된 오목거울(3)의 제작이 용이하지 못할 뿐만아니라 오목거울 (3)의 조립이 용이하지 못한 단점이 있었으며, 오목거울 (3)의 무게가 무겁기 때문에 오목거울 (3)이 고정되는 갤비노미터 (1)의 구동제어가 용이하지 못하였다.However, the optical device of the bar code scanner as described above has a disadvantage in that it is not easy to manufacture the concave mirror 3 coated with the flat mirror 2, and also the assembly of the concave mirror 3 is not easy. Because of the heavy weight of (3), the drive control of the galvanometer (1) to which the concave mirror (3) is fixed was not easy.

또한 포토디텍터 (5)의 위치 설정이 용이하지 못하였고 설치가 용이하지 못한 문제점이 있었다.In addition, the positioning of the photodetector 5 was not easy and there was a problem that the installation was not easy.

본 고안은 상기한 바와같은 종래의 문제점을 해소하기 위하여 안출한 것으로, 갤비노미터에 평면거울을 구비한 프레넬 렌즈를 세워 고정하고 상기 프레넬 렌즈의 직후방에 포토디텍터를 설치함으로써 포토디텍터의 설치를 용이하게 하고 경박단소에 적당하도록 구성한 것인 바, 이를 첨부된 도면에 의하여 설명하면 다음과 같다.The present invention has been made to solve the conventional problems as described above, by fixing a Fresnel lens having a flat mirror on the galvanometer upright and installing a photodetector immediately after the Fresnel lens of the photodetector It is easy to install and configured to be suitable for light and thin short, as described by the accompanying drawings as follows.

제 2 도에 도시한 바와같이, 레이저 다이오드 (11)의 레이저 빔이 볼록렌즈 (12)에 의하여 접속되어 갤버노미터 (13)로 회전되는 평면거울 (14)에 반사되는 바코드 스캐너의 광학장치에 있어서, 상기 갤버노미터 (13)에는 하부에 상기 평면거울 (14)을 구비한 프레넬(Fresnel) 렌즈 (15)를 세워 고정하고, 상기 프레넬 렌즈 (15)의 직후방에 포토 디텍터 (16)를 설치하여 구성한 것이다.As shown in FIG. 2, the laser beam of the laser diode 11 is connected to the optical device of the barcode scanner which is connected by the convex lens 12 and reflected on the plane mirror 14 which is rotated by the galvanometer 13. In this case, a Fresnel lens 15 having the flat mirror 14 is erected and fixed to the galvanometer 13 and a photo detector 16 immediately after the Fresnel lens 15. ) Is installed and configured.

이와같이 구성되는 본 고안에 의한 바코드 스캐너의 광학장치는 레이저 다이오드 (11)에서 나온 레이저 빔은 볼록렌즈 (12)를 통해 갤버노미터 (13)에 의하여 좌, 우 회전되는 프레넬 렌즈 (15)의 평면거울 (14)에 집속되어 반사된 후, 바코드 (17)를 스캔하게 되며, 상기 바코드 (17)에서 난반사되는 레이저 빔은 프레넬 렌즈 (15)로 접속된 다음 포토디텍터 (16)로 향하게 되는 것이다.In the optical device of the barcode scanner according to the present invention, the laser beam from the laser diode 11 is rotated left and right by the galvanometer 13 through the convex lens 12 of the Fresnel lens 15. After focusing and reflecting on the flat mirror 14, the barcode 17 is scanned, and the laser beam diffused from the barcode 17 is connected to the Fresnel lens 15 and then directed to the photodetector 16. will be.

이상에서 설명한 바와같은 본 고안은 종래에 사용되었던 평면거울이 코팅된 오목거울을 사용하지 않게 됨으로써 제작 및 조립이 한층 용이해질 뿐만아니라 경량의 프레넬 렌즈를 사용하여 갤버노미터의 구동 제어가 용이한 이점이 있으며, 포토디텍터의 위치 설정 및 설치가 용이한 등의 여러 효과를 얻을 수 있다.As described above, the present invention eliminates the use of a flat mirror coated concave mirror, which facilitates fabrication and assembly, as well as easy driving control of the galvanometer using a lightweight Fresnel lens. There are advantages, and various effects such as easy positioning and installation of the photodetector can be obtained.

Claims (1)

레이저 빔이 볼록렌즈 (12)에 의하여 접속되어 갤버노미터 (13)로 회전되는 평면거울 (14)에 반사되도록 하며, 갤버노미터 (13)의 하부에 상기 평면거울 (14)을 구비한 프레넬 렌즈 (15)를 세워 고정하고, 상기 프레넬 렌즈 (15)의 직후방에 포토디텍터 (16)를 설치하여서 됨을 특징으로 하는 바코드 스캐너의 광학장치.The laser beam is connected by the convex lens 12 so as to be reflected by the flat mirror 14 which is rotated by the galvanometer 13, and has a flat mirror 14 having the flat mirror 14 at the bottom of the galvanometer 13 An optical device of a barcode scanner, characterized in that the Nell lens (15) is upright and fixed, and a photodetector (16) is provided immediately after the Fresnel lens (15).
KR2019890010842U 1989-07-25 1989-07-25 Optical apparatus of barcode scanner KR940002823Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019890010842U KR940002823Y1 (en) 1989-07-25 1989-07-25 Optical apparatus of barcode scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019890010842U KR940002823Y1 (en) 1989-07-25 1989-07-25 Optical apparatus of barcode scanner

Publications (2)

Publication Number Publication Date
KR910003157U KR910003157U (en) 1991-02-26
KR940002823Y1 true KR940002823Y1 (en) 1994-04-23

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KR2019890010842U KR940002823Y1 (en) 1989-07-25 1989-07-25 Optical apparatus of barcode scanner

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KR910003157U (en) 1991-02-26

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