JPS55115163A - Bar code reader - Google Patents
Bar code readerInfo
- Publication number
- JPS55115163A JPS55115163A JP2094979A JP2094979A JPS55115163A JP S55115163 A JPS55115163 A JP S55115163A JP 2094979 A JP2094979 A JP 2094979A JP 2094979 A JP2094979 A JP 2094979A JP S55115163 A JPS55115163 A JP S55115163A
- Authority
- JP
- Japan
- Prior art keywords
- light
- mirror
- bar code
- reflection
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Mechanical Optical Scanning Systems (AREA)
Abstract
PURPOSE: To extend the read-in distance with reduced optical loss with a simple unit, by using sharp laser light having light-focusing property and using the hole mirror as the transmission means of passing of laser light and reflection of signal reflection light.
CONSTITUTION: As the light source L', the laser light ϕ' high in light focusing property and producing very fine beam is used, and it passes through the fine hole h of the hole mirror 1' located with a given angle to the light ϕ' and radiated on the scanning mirror 2. Further, the light ϕ' is reflected to search the bar code surface 3, and the reflection light is reflected again with the mirror 2 and radiated at the back of the mirror 1'. Further, the light diffracted on the mirror 1' is fed to the photo electric conversion unit 4 for electric signal conversion. The search of the bar code surface 3 by means of the mirror 2 is made by the scanning drive unit 5, light loss is reduced with a simple reader to extend the read-in distance.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2094979A JPS55115163A (en) | 1979-02-23 | 1979-02-23 | Bar code reader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2094979A JPS55115163A (en) | 1979-02-23 | 1979-02-23 | Bar code reader |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55115163A true JPS55115163A (en) | 1980-09-04 |
Family
ID=12041435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2094979A Pending JPS55115163A (en) | 1979-02-23 | 1979-02-23 | Bar code reader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55115163A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0700980A1 (en) * | 1994-03-17 | 1996-03-13 | Hitachi Maxell, Ltd. | Phosphor, phosphor composition, fluorescent mark carrier, and optical character reader |
-
1979
- 1979-02-23 JP JP2094979A patent/JPS55115163A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0700980A1 (en) * | 1994-03-17 | 1996-03-13 | Hitachi Maxell, Ltd. | Phosphor, phosphor composition, fluorescent mark carrier, and optical character reader |
EP0700980A4 (en) * | 1994-03-17 | 1996-12-18 | Hitachi Maxell | Phosphor, phosphor composition, fluorescent mark carrier, and optical character reader |
US5932139A (en) * | 1994-03-17 | 1999-08-03 | Hitachi Maxell, Ltd. | Fluorescent substance, fluorescent composition, fluorescent mark carrier and optical reader thereof |
US6303929B1 (en) | 1994-03-17 | 2001-10-16 | Hitachi Maxell, Ltd. | Fluorescent substance, fluorescent composition, fluorescent mark carrier and optical reader therefor |
US6436314B1 (en) | 1994-03-17 | 2002-08-20 | Hitachi Maxell, Ltd. | Particulate fluorescent substance |
US6458294B2 (en) | 1994-03-17 | 2002-10-01 | Hitachi Maxell, Ltd. | Fluorescent ink compositions |
US6471887B2 (en) | 1994-03-17 | 2002-10-29 | Hitachi Maxell, Ltd. | Neodymium, ytterbium and/or erbium containing organic fluorescent compositions |
US6688789B2 (en) | 1994-03-17 | 2004-02-10 | Hitachi Maxell, Ltd. | Fluorescent substance, fluorescent composition, fluorescent mark carrier and optical reader therefor |
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