JPH01259467A - Optical reading device - Google Patents
Optical reading deviceInfo
- Publication number
- JPH01259467A JPH01259467A JP63087811A JP8781188A JPH01259467A JP H01259467 A JPH01259467 A JP H01259467A JP 63087811 A JP63087811 A JP 63087811A JP 8781188 A JP8781188 A JP 8781188A JP H01259467 A JPH01259467 A JP H01259467A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- symbol
- reading device
- barcode
- reading head
- 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
- 230000003287 optical effect Effects 0.000 title claims description 29
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 235000013324 preserved food Nutrition 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Character Input (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、湾曲面上に表示された文字や記号等からな
るシンボルを読み取って認識する光学式読取り装置に関
する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an optical reader that reads and recognizes symbols consisting of characters, symbols, etc. displayed on a curved surface.
〈従来の技術〉
近年、商品の表面に、メーカ名、商品名、価格および製
造年月日等を、バーコードとして印刷し、該バーコード
を、光学式読取り装置（ＯＣＲ）によって読み取ること
により、販売、在庫等を管理するシステムが幅広く普及
している。また、上記ＯＣＲは、他のコード等の記号或
いは文字等の読取りにも用いられている。<Prior art> In recent years, the manufacturer's name, product name, price, date of manufacture, etc. are printed on the surface of the product as a barcode, and the barcode is read by an optical reader (OCR). Systems for managing sales, inventory, etc. are widely used. The above OCR is also used to read symbols such as other codes or characters.
上記のＯＣＲとして、表示面上に表示された文字や記号
等からなるシンボルに、読取りヘッドの端面を近接或い
は接触させ、該端面がら上記シンボルを反射率の相違に
基づいて光信号として入力し、該光信号をＣＣＤ等の光
電変換素子により電気信号に変換し、該電気信号に基づ
いてＣＰＵを用いた認識部によりシンボルを認識するも
のが提供されている。In the above OCR, the end face of the reading head is brought close to or in contact with a symbol consisting of characters, symbols, etc. displayed on the display surface, and the symbol is input as an optical signal from the end face based on the difference in reflectance. There has been provided an apparatus in which the optical signal is converted into an electrical signal by a photoelectric conversion element such as a CCD, and a symbol is recognized by a recognition unit using a CPU based on the electrical signal.
〈発明が解決しようとする課題〉
ところが、丸缶や丸瓶等の湾曲面に沿って表示されたシ
ンボルに対しては、読取りヘッドの端面をうまく沿わせ
られないために、読取りできなかったり、読取りミスが
生じたりしていた。また、読取りミスを防止するために
、シンボルの表示方向が制限される場合もあり、商品の
デザインに制約が生じていた。<Problems to be Solved by the Invention> However, symbols displayed along the curved surfaces of round cans, bottles, etc. cannot be read because the end surface of the reading head cannot be properly aligned with them. Reading errors were occurring. Furthermore, in order to prevent reading errors, the display direction of symbols is sometimes restricted, which imposes restrictions on product design.
この発明は、湾曲面上のシンボルを正確に認識でき、シ
ンボルの自由なデザインを可能にする光学式読取り装置
を提供することを目的としている。An object of the present invention is to provide an optical reading device that can accurately recognize symbols on a curved surface and allows free design of symbols.
〈課題を解決するための手段〉
上記目的を達成するためのこの発明の光学式読取り装置
としては、湾曲面に沿って表示された文字、記号等から
なるシンボルに、読取りヘッドを近接或いは接触させて
、上記シンボルを、光信号として入力し、電気信号に変
換して認識する光学式読取装置であって、読取りヘッド
の端面が、湾曲面上のシンボルに沿って湾曲しているこ
とを特徴とするものである。<Means for Solving the Problems> In order to achieve the above object, the optical reading device of the present invention has a reading head that is brought close to or in contact with a symbol consisting of characters, symbols, etc. displayed along a curved surface. The present invention is an optical reading device which inputs the above-mentioned symbol as an optical signal and converts it into an electric signal to recognize the symbol, and the end surface of the reading head is curved along the symbol on the curved surface. It is something to do.
く作用〉
上記の構成の光学式読取り装置によれば：湾曲面上のシ
ンボルに沿って湾曲した読取りヘッドの端面が、シンボ
ルと対向することにより、シンボルを正確に読み取るこ
とができる。Effect> According to the optical reading device having the above configuration: The end surface of the reading head curved along the symbol on the curved surface faces the symbol, so that the symbol can be read accurately.
〈実施例〉 以下実施例を示す添付図面によって詳細に説明する。<Example> Embodiments will be described in detail below with reference to the accompanying drawings showing embodiments.
第１図はこの発明の光学式読取り装置の一実施例を示す
斜視図であり、読取りヘッドとしての先シート（１）に
連続してＭＯ８素子やＣＯＤ素子等からなる光電変換部
（２）を設けていると共に、該光電変換部（２）にＣＰ
Ｕ等を内装した認識部（３）を接続している。FIG. 1 is a perspective view showing an embodiment of the optical reading device of the present invention, in which a photoelectric conversion section (2) consisting of an MO8 element, a COD element, etc. is connected to a leading sheet (1) as a reading head. In addition, a CP is provided in the photoelectric conversion section (2).
A recognition unit (3) containing a U, etc. is connected.
上記読取りヘッドとしての光シート（１）は、断面円弧
状をしており、基板フィルム（１１）の外周上に、断面
方形の先導波路（１２）を、複数条並列的に突設してい
ると共に、該光導波路（１２）および基板フィルム（１
１）の外周側を覆った状態で、クラッド層（１３）を形
成している。上記光シート（１）の端面（１ａ）は、各
光導波路（１２）を露出させていると共に、上記円弧の
内周側に、傾斜した湾曲状の傾斜面（傾斜角は例えば３
０度に設定される）を形成している（第２図参照）。上
記端面（１ａ）の曲率は、缶詰（４）の湾曲面（４１）
に印刷されたシンボルとしてのバーコード（５）に沿う
ことができるように設定されている。The optical sheet (1) serving as the reading head has an arcuate cross section, and a plurality of guiding waveguides (12) with a rectangular cross section are protruded in parallel on the outer periphery of the substrate film (11). In addition, the optical waveguide (12) and the substrate film (1
A cladding layer (13) is formed to cover the outer peripheral side of 1). The end surface (1a) of the optical sheet (1) exposes each optical waveguide (12), and has a curved inclined surface (the angle of inclination is, for example, 3
(see Figure 2). The curvature of the end surface (1a) is the curved surface (41) of the canned food (4).
It is set so that it can follow the barcode (5) as a symbol printed on the screen.
上記基板フィルム（１１）は、例えば幅が８０ｎｖｎ。The substrate film (11) has a width of, for example, 80nvn.
長さが１００ ｍｍおよび厚みが５０μｍ程度のポリ弗
化ビニリデン等からなる。It is made of polyvinylidene fluoride or the like and has a length of about 100 mm and a thickness of about 50 μm.
上記光導波路（１２）は、例えば、主成分となるポリメ
チルメタクリレートと、光反応性基（アルキル基）を導
入したグリシジルメタクリレート等の樹脂とを重合させ
ると共に、光増加剤を添加した厚み１００μ口程度の光
重合性組成物からなる。この光導波路（１２）は、上記
光重合性組成物をメチルエチルケトン等の良溶媒に溶解
させた溶解液を、基板フィルム（１１）上に塗布して形
成した層に、略１００μｍピッチの平行線状の紫外線を
１ｏ分間照射して、該照射部分を固定することにより形
成される。上記紫外線が照射されなかった部分は、メチ
ルエチルケトン等の溶媒によって溶出される。The optical waveguide (12) is made by, for example, polymerizing polymethyl methacrylate as the main component and a resin such as glycidyl methacrylate into which a photoreactive group (alkyl group) has been introduced, and adding a light increaser to a thickness of 100 μm. of photopolymerizable composition. This optical waveguide (12) is formed by applying a solution prepared by dissolving the photopolymerizable composition in a good solvent such as methyl ethyl ketone onto a substrate film (11). It is formed by irradiating ultraviolet rays for 10 minutes and fixing the irradiated area. The portion not irradiated with the ultraviolet rays is eluted with a solvent such as methyl ethyl ketone.
この結果、光導波路（１２）どうしの間に凹条（１４）
が形成される（第３図参照）。As a result, grooves (14) are formed between the optical waveguides (12).
is formed (see Figure 3).
上記クラッド層（１３）は、例えば弗化ポリメチル、
メタクリレート完成樹脂を溶媒に溶かしたものを、各凹
条（１４）を埋めると共に各光導波路（１２）を覆った
状態に、塗布することにより形成される。このクラッド
層（１３）の厚みは、光導波路（１２）上で５０μｍ程
度である。The cladding layer (13) is made of polymethyl fluoride, for example.
It is formed by applying a solution of methacrylate finished resin in a solvent to fill each groove (14) and cover each optical waveguide (12). The thickness of this cladding layer (13) on the optical waveguide (12) is about 50 μm.
この実施例の構成によれば、読取りヘッドとしての光シ
ート（１）の端面（１ａ）が、湾曲面（４１）上のバー
コード（５）に沿って湾曲しているので、該端面（１ａ
）とバーコード（５）とが対向することにより、バーコ
ード（５）を正確に認識できる。According to the configuration of this embodiment, since the end surface (1a) of the light sheet (1) serving as a reading head is curved along the barcode (5) on the curved surface (41), the end surface (1a) is curved along the barcode (5) on the curved surface (41).
) and the barcode (5) face each other, it is possible to accurately recognize the barcode (5).
また、湾曲面（４１）においてバーコード（５）の印刷
方向が制限されないので、バーコード（５）の自由ナデ
ザインを可能にすることができる。Furthermore, since the printing direction of the barcode (5) is not restricted on the curved surface (41), it is possible to freely design the barcode (5).
さらに、光シート（１）を弾性変形させることにより光
シート（１）の端面（１ａ）を、バーコード（５）に適
確に沿わせることができ、バーコード（５）の認識を一
層正確に行える。Furthermore, by elastically deforming the light sheet (1), the end surface (1a) of the light sheet (1) can be aligned precisely with the barcode (5), making the recognition of the barcode (5) even more accurate. can be done.
なお、この発明の光学式読取り装置は、上記実施例に限
定されるものでなく、例えば、先導波路（１２）の断面
形状を長方形や半円等の他の形状とすること、先導波路
（１２）として光ファイバを用いること、光シート（１
）の端面（ｌａ）の傾斜角を３０度以外の角度とするこ
と、光シート（１）をＧａＡｓ系等の化合物半導体材料
、Ｌｉｔ４０３等り誘電体材料、石英系ガラス等のガラ
ス材料およびガーネット系等の磁性材料等により構成す
ること等、この発明の要、旨を変更しない範囲で種々の
設計変更を施すことができる。Note that the optical reading device of the present invention is not limited to the above-mentioned embodiments, and for example, the cross-sectional shape of the leading waveguide (12) may be a rectangle or a semicircle. ), using an optical fiber as a light sheet (1
), the inclination angle of the end face (la) of the optical sheet (1) is an angle other than 30 degrees, and the optical sheet (1) is made of a compound semiconductor material such as GaAs-based, a dielectric material such as Lit403, a glass material such as quartz-based glass, or a garnet-based material. Various design changes can be made without changing the gist and gist of the present invention, such as constructing it from magnetic materials such as.
〈発明の効果〉
以上のように、この発明の光学式読取り装置によれば、
読取りヘッドの端面が、湾曲面上のシンボルに沿って湾
曲しているので、該読取りヘッドの端面とシンボルとが
対向し、シンボルを正確に認識でき、さらに、シンボル
の表示方向が制限されないので、シンボルの自由なデザ
インを可能にするという特有の効果を奏する。<Effects of the Invention> As described above, according to the optical reading device of the present invention,
Since the end surface of the reading head is curved along the symbol on the curved surface, the end surface of the reading head and the symbol face each other, and the symbol can be recognized accurately.Furthermore, the display direction of the symbol is not limited. It has the unique effect of allowing free design of symbols.
第１図はこの発明の光学式読取り装置の一実施例を示す
斜視図、
第２図は光シートの拡大断面図、
第３図は光導波路の形成過程を示す斜視図。
（１）・・・読取りヘッドとしての光シート、（１ａ）
・・・端面、（２）・・・光電変換部、（３）・・・認
識部、（４１）・・・湾曲面、（５）・・・シンボルと
してのバーコード特許出願人 住友電気工業株式会社
第２図FIG. 1 is a perspective view showing an embodiment of the optical reading device of the present invention, FIG. 2 is an enlarged sectional view of an optical sheet, and FIG. 3 is a perspective view showing the process of forming an optical waveguide. (1)...Light sheet as a reading head, (1a)
... end face, (2) ... photoelectric conversion section, (3) ... recognition section, (41) ... curved surface, (5) ... barcode as symbol patent applicant Sumitomo Electric Industries, Ltd. Co., Ltd. Figure 2
Claims (1)
ンボルに、読取りヘッドを近接或いは接触させて、上記
シンボルを、 光信号として入力し、電気信号に変換して認識する光学
式読取り装置であって、 読取りヘッドの端面が、湾曲面上のシンボルに沿って湾
曲していることを特徴とする光学式読取り装置。[Claims] 1. A reading head is brought close to or in contact with a symbol consisting of characters, symbols, etc. displayed along a curved surface, and the symbol is inputted as an optical signal and converted into an electrical signal. What is claimed is: 1. An optical reading device for recognition, characterized in that an end surface of a reading head is curved along a symbol on a curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63087811A JPH01259467A (en) | 1988-04-08 | 1988-04-08 | Optical reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63087811A JPH01259467A (en) | 1988-04-08 | 1988-04-08 | Optical reading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01259467A true JPH01259467A (en) | 1989-10-17 |
Family
ID=13925362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63087811A Pending JPH01259467A (en) | 1988-04-08 | 1988-04-08 | Optical reading device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01259467A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5481100A (en) * | 1992-04-14 | 1996-01-02 | Riso Kagaku Corporation | Spirally arranged bar code |
-
1988
- 1988-04-08 JP JP63087811A patent/JPH01259467A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5481100A (en) * | 1992-04-14 | 1996-01-02 | Riso Kagaku Corporation | Spirally arranged bar code |
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