JPH0157392B2 - - Google Patents
Info
- Publication number
- JPH0157392B2 JPH0157392B2 JP59156395A JP15639584A JPH0157392B2 JP H0157392 B2 JPH0157392 B2 JP H0157392B2 JP 59156395 A JP59156395 A JP 59156395A JP 15639584 A JP15639584 A JP 15639584A JP H0157392 B2 JPH0157392 B2 JP H0157392B2
- Authority
- JP
- Japan
- Prior art keywords
- case
- transparent body
- light
- opening
- image sensor
- 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.)
- Expired
Links
- 239000000428 dust Substances 0.000 claims description 16
- 230000003287 optical effect Effects 0.000 claims description 4
- 210000000078 claw Anatomy 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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
- G06K7/10881—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 constructional details of hand-held scanners
Landscapes
- 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)
Description
【発明の詳細な説明】
発明の技術分野
この発明は、光学読取装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to an optical reading device.
発明の技術的背景及びその問題点
従来、先端に開口面が形成されたケースに、少
なくとも光源とイメージセンサとを設け、光源か
らの光をバーコード等の記録担体の表面に投光
し、その反射光によるデータをイメージセンサに
より読取るようにしたものが存するが、内部に塵
埃が浸入する欠点を有している。イメージセンサ
の配置によつては記録担体からの反射光を反射ミ
ラーにより屈折し、さらに集光レンズを透した反
射光をイメージセンサが受光するようにしている
が、これらの反射ミラー、集光レンズ、イメージ
センサ等はケースの開口面から遠く離れた内部に
位置しているため掃除しにくい。開口面に一番近
い反射ミラーだけはアルコールを浸した綿棒等に
よつてどうにか塵埃を拭き取ることはできても、
その奥に位置する集光レンズやイメージセンサの
清掃は不可能である。このため、ケースを分解し
て塵埃を除去しなければならず、きわめて作業性
が悪い。また、光源の光をレンズにより集光して
から記録担体に照射することも一般に行なわれて
いるが、このレンズはケースの開口面から奥に位
置させないと疵がつき易くなる。この場合には反
射ミラーもケースを分解しなければ清掃すること
ができない。Technical background of the invention and its problems Conventionally, at least a light source and an image sensor are provided in a case with an opening formed at the tip, and light from the light source is projected onto the surface of a record carrier such as a bar code. There are devices in which data from reflected light is read by an image sensor, but they have the drawback that dust can get inside. Depending on the arrangement of the image sensor, the reflected light from the record carrier is refracted by a reflecting mirror, and the image sensor receives the reflected light that passes through a condensing lens. , image sensors, etc. are located inside the case far away from the opening surface of the case, making them difficult to clean. Even if you can somehow wipe off the dust from the reflective mirror closest to the aperture with a cotton swab soaked in alcohol,
It is impossible to clean the condenser lens and image sensor located deep inside. Therefore, the case must be disassembled to remove dust, which is extremely inefficient. It is also common practice to focus the light from a light source using a lens and then irradiate it onto the record carrier, but this lens is likely to be damaged if it is not positioned deep from the opening of the case. In this case, the reflective mirror cannot be cleaned without disassembling the case.
発明の目的
この発明は、このような点に鑑みなされたもの
で、光源の光を読取面に集光して読取性能を向上
させ、かつ、ケース内への塵埃の侵入を防止する
ことができる光学読取装置を得ることを目的とす
る。Purpose of the Invention This invention was made in view of the above points, and is capable of improving reading performance by concentrating the light from a light source on the reading surface, and preventing dust from entering the case. The purpose is to obtain an optical reading device.
発明の概要
この発明は、ケースの開口面にレンズ部と遮蔽
部とを有する透光体を嵌合し、光源の光をレンズ
部により集光して記録担体に照射し、記録担体か
らの反射光をイメージセンサにより受光して光学
的にデータを読取るようにし、また、ケースの開
口面を透光体全体で覆うことによりケース内部へ
の塵埃の浸入を防止し、さらに、ケースの先端に
窓枠を取付けることにより透光体に疵がつくこと
を防止し、さらに、窓枠を外すことにより透光体
に付着する塵埃を容易に除去することができるよ
うに構成したものである。Summary of the Invention This invention involves fitting a transparent body having a lens part and a shielding part into the opening surface of a case, condensing light from a light source with the lens part and irradiating it onto a record carrier, and preventing reflection from the record carrier. Light is received by an image sensor and the data is read optically, and the opening surface of the case is entirely covered with a transparent material to prevent dust from entering the case.Furthermore, there is a window at the tip of the case. By attaching the frame, the transparent body is prevented from being scratched, and furthermore, by removing the window frame, dust adhering to the transparent body can be easily removed.
発明の実施例
この発明の一実施例を図面に基づいて説明す
る。Embodiment of the Invention An embodiment of the invention will be described based on the drawings.
１は二分割されるケースで、このケース１には開
口部２から奥に向けて透光体３と光源である
LED４と反射ミラー５と集光用のレンズ６とイ
メージセンサ７等が順次配列されている。透光体
３はLED４からの光を集光するレンズ部８と塵
埃遮蔽部としての遮蔽部９とを一体的にアクリル
樹脂によつて形成したもので開口面２を密閉する
ようにその開口面２に固定的に嵌合されている。
また、この透光体３はイメージセンサ７が外乱光
の影響を受けないように、たとえば600nm付近の
波長領域の光のみを透すように着色されている。1 is a case that is divided into two parts, and this case 1 has a transparent body 3 and a light source from the opening 2 towards the back.
An LED 4, a reflecting mirror 5, a condensing lens 6, an image sensor 7, etc. are arranged in this order. The light-transmitting body 3 is made of acrylic resin and integrally formed with a lens part 8 that condenses the light from the LED 4 and a shielding part 9 as a dust shielding part. 2 is fixedly fitted.
Further, the light transmitting body 3 is colored so as to transmit only light in a wavelength region around 600 nm, for example, so that the image sensor 7 is not affected by disturbance light.
さらに、ケース１の開口面２の両側には弾性的
に屈撓する係止爪１０が形成され、これらの係止
爪１０に弾発的に係合する係止孔１１が形成され
た筒状の窓枠１２が設けられている。この窓枠１
２の一辺には凹部１３が形成され、反対側の一辺
には凹状の弧面１４が形成されている。また、窓
枠１２はゴム等の軟質材によつて形成されてい
る。 Furthermore, elastically bending locking claws 10 are formed on both sides of the opening surface 2 of the case 1, and a cylindrical shape having a locking hole 11 that elastically engages with these locking claws 10 is formed. A window frame 12 is provided. This window frame 1
A recess 13 is formed on one side of 2, and a concave arc surface 14 is formed on the opposite side. Furthermore, the window frame 12 is made of a soft material such as rubber.
このような構成において、ケース１を把持し、
ELD４からの光をレンズ部８により集光させて
バーコードが記録されたラベル１５に照射し、ラ
ベル５からの反射光を反射ミラー５により反射
し、さらにレンズ６により集光した光をイメージ
センサ７が受光することにより、ラベル５のデー
タを読取る。ラベル１５に記録されたバーコード
が窓枠１２に覆われる程幅が狭い場合には、凹部
１３を通してバーコードの位置を見定めることが
できる。また、ラベル１５が罐に貼り付けられて
いるときは、弧面１４を罐の外周に接触させるこ
とによりケース１を安定させて読取りを容易にす
ることができる。窓枠１２は軟質材により形成さ
れているので、商品に疵をつけるおそれがない。
透光体３は窓枠１２の奥に取付けられているので
商品に干渉して疵をつけられることもない。さら
に、透光体３は開口面２からの塵埃の浸入を防止
するので、ケース１内部を清掃するわずらわしさ
を解消することができる。透光体３の外面には塵
埃が付着するが、窓枠１２を外すことによつてき
わめて容易に拭き落すことができる。 In such a configuration, grip the case 1,
The light from the ELD 4 is focused by the lens section 8 and irradiated onto the label 15 on which the barcode is recorded, the reflected light from the label 5 is reflected by the reflective mirror 5, and the light focused by the lens 6 is sent to the image sensor. 7 reads the data on the label 5 by receiving the light. If the barcode recorded on the label 15 is narrow enough to be covered by the window frame 12, the position of the barcode can be determined through the recess 13. Furthermore, when the label 15 is attached to the can, the case 1 can be stabilized and read easily by bringing the arcuate surface 14 into contact with the outer periphery of the can. Since the window frame 12 is made of a soft material, there is no risk of damaging the product.
Since the transparent body 3 is attached to the back of the window frame 12, it will not interfere with the product and cause damage. Furthermore, since the transparent body 3 prevents dust from entering through the opening surface 2, the troublesome task of cleaning the inside of the case 1 can be eliminated. Although dust adheres to the outer surface of the transparent body 3, it can be wiped off very easily by removing the window frame 12.
発明の効果
この発明は上述のように構成したので、ケース
内部への塵埃の浸入を透光体によつて防止し、内
部部品の塵埃清掃の手間を省くことができ、ま
た、その透光体にはレンズ部が一体的に形成され
ているため、光源の光を読取面に集光して読取性
能を向上させることができ、このような読取性能
の向上とケース内への塵埃の侵入防止とを一部品
で行なうことができ、さらに、透光体と商品との
干渉を窓枠により阻止して透光体に疵がつくこと
を防止するとともに、窓枠を外すことにより透光
体の外面に付着する塵埃を容易に拭取ることがで
きる等の効果を有するものである。Effects of the Invention Since the present invention is configured as described above, it is possible to prevent dust from entering the inside of the case by using the transparent body, save the trouble of cleaning dust from internal parts, and furthermore, the transparent body can prevent dust from entering the case. Since the lens part is integrally formed in the case, it is possible to improve the reading performance by concentrating the light from the light source on the reading surface, which improves the reading performance and prevents dust from entering the case. In addition, the window frame prevents interference between the transparent body and the product, preventing scratches on the transparent body, and by removing the window frame, the transparent body can be easily removed. This has the effect that dust adhering to the outer surface can be easily wiped off.
図面はこの発明の一実施例を示すもので、第１
図は一部を断面にした側面図、第２図は分解斜視
図、第３図は透光体の斜視図である。
１……ケース、２……開口面、３……透光体、
４……LED（光源）、７……イメージセンサ、８
……レンズ部、９……遮蔽部、１２……窓枠。
The drawings show one embodiment of the invention.
The figure is a side view with a part cut away, FIG. 2 is an exploded perspective view, and FIG. 3 is a perspective view of the transparent body. 1... Case, 2... Opening surface, 3... Translucent body,
4...LED (light source), 7...Image sensor, 8
... Lens section, 9 ... Shielding section, 12 ... Window frame.
Claims (1)
るとともに先端に開口面が形成されたケースを設
け、塵埃遮蔽部とレンズ部とが一体的に形成され
た透明な透光体を設け、前記開口面を密閉するよ
うにその開口面に前記透光体を固定的に嵌合した
ことを特徴とする光学読取装置。 ２ 少なくとも光源とイメージセンサとを内蔵す
るとともに先端に開口面が形成されたケースを設
け、塵埃遮蔽部とレンズ部とが一体的に形成され
た透明な透光体を設け、前記開口面を密閉するよ
うにその開口面に前記透光体を固定的に嵌合し、
前記ケースの先端に両端開口の筒形の窓枠を着脱
自在に取付けたことを特徴とする光学読取装置。[Claims] 1. A case that contains at least a light source and an image sensor and has an opening at its tip is provided, and a transparent transparent body in which a dust shielding part and a lens part are integrally formed is provided. . An optical reading device, characterized in that the transparent body is fixedly fitted to the opening surface so as to seal the opening surface. 2. A case containing at least a light source and an image sensor and an opening formed at the tip is provided, a transparent transparent body in which a dust shielding part and a lens part are integrally formed, and the opening is sealed. fixedly fitting the transparent body into the opening surface so as to
An optical reading device characterized in that a cylindrical window frame with openings at both ends is detachably attached to the tip of the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15639584A JPS6134681A (en) | 1984-07-26 | 1984-07-26 | Optical reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15639584A JPS6134681A (en) | 1984-07-26 | 1984-07-26 | Optical reader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6134681A JPS6134681A (en) | 1986-02-18 |
| JPH0157392B2 true JPH0157392B2 (en) | 1989-12-05 |
Family
ID=15626797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15639584A Granted JPS6134681A (en) | 1984-07-26 | 1984-07-26 | Optical reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6134681A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6423382A (en) * | 1987-07-18 | 1989-01-26 | Hitachi Transport System | Miniature optical scanning type bar-cord reader |
| JPH0517760U (en) * | 1991-08-13 | 1993-03-05 | 日通工株式会社 | Hand scanner type bar corder |
| US5777314A (en) * | 1992-02-27 | 1998-07-07 | Symbol | Optical scanner with fixed focus optics |
| US5756981A (en) * | 1992-02-27 | 1998-05-26 | Symbol Technologies, Inc. | Optical scanner for reading and decoding one- and-two-dimensional symbologies at variable depths of field including memory efficient high speed image processing means and high accuracy image analysis means |
| US5354977A (en) * | 1992-02-27 | 1994-10-11 | Alex Roustaei | Optical scanning head |
| US5572007A (en) * | 1994-08-19 | 1996-11-05 | Intermec Corporation | Symbology reader with interchangeable window |
| US7823789B2 (en) * | 2004-12-21 | 2010-11-02 | Cognex Technology And Investment Corporation | Low profile illumination for direct part mark readers |
| US9292724B1 (en) | 2004-12-16 | 2016-03-22 | Cognex Corporation | Hand held symbology reader illumination diffuser with aimer optics |
| US7617984B2 (en) | 2004-12-16 | 2009-11-17 | Cognex Technology And Investment Corporation | Hand held symbology reader illumination diffuser |
| JP4867820B2 (en) * | 2007-03-09 | 2012-02-01 | 株式会社デンソーウェーブ | Optical information reader |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4318808Y1 (en) * | 1965-04-08 | 1968-08-05 | ||
| JPS58114167A (en) * | 1981-12-26 | 1983-07-07 | Fujitsu Ltd | Reader |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5866452U (en) * | 1981-10-29 | 1983-05-06 | 住友電気工業株式会社 | hand scanner |
-
1984
- 1984-07-26 JP JP15639584A patent/JPS6134681A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4318808Y1 (en) * | 1965-04-08 | 1968-08-05 | ||
| JPS58114167A (en) * | 1981-12-26 | 1983-07-07 | Fujitsu Ltd | Reader |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6134681A (en) | 1986-02-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |