JPH0512833Y2 - - Google Patents
Info
- Publication number
- JPH0512833Y2 JPH0512833Y2 JP8130787U JP8130787U JPH0512833Y2 JP H0512833 Y2 JPH0512833 Y2 JP H0512833Y2 JP 8130787 U JP8130787 U JP 8130787U JP 8130787 U JP8130787 U JP 8130787U JP H0512833 Y2 JPH0512833 Y2 JP H0512833Y2
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- light
- receiving means
- housing
- 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.)
- Expired - Lifetime
Links
- 239000013307 optical fiber Substances 0.000 claims description 18
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Description
【考案の詳細な説明】
産業上の利用分野
本考案は台紙等に印刷された明暗のパターンで
あるコードを光学的に読取るコードリーダ用ヘツ
ドに関する。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a head for a code reader that optically reads a code, which is a light and dark pattern printed on a mount or the like.
従来の技術
コンベアラインを移送されるパレツト等の物品
に対して、仕分け、積込み、積降し、加工を自動
的に行う目的等でコードリーダが使用される。2. Description of the Related Art Code readers are used to automatically sort, load, unload, and process objects such as pallets that are transferred on a conveyor line.
コードリーダは、第５図に示すようにその先端
のヘツド１から、投受光を行つて明暗のパターン
であるコード２を、物品の移動に従つて読取り走
査する。この投受光は、ヘツド内の投光レンズ３
と受光用レンズ４を通して、行われる。 As shown in FIG. 5, the code reader emits and receives light from a head 1 at its tip to read and scan a code 2, which is a light and dark pattern, as the article moves. This emitted and received light is transmitted through the light emitting lens 3 in the head.
This is done through the light receiving lens 4.
この場合に、投受光の感度及び精度を高めるた
めには、例えば第５図に示すような最適の投光範
囲（実線）と受光範囲（破線）を持つようにレン
ズ３，４と、光学フアイバ等の投受光手段５，５
との距離1，2を調整する必要がある。 In this case, in order to increase the sensitivity and accuracy of light emission and reception, it is necessary to adjust the lenses 3 and 4 and optical fibers so that they have the optimum light emission range (solid line) and light reception range (dashed line) as shown in FIG. Light emitting/receiving means 5, 5 such as
It is necessary to adjust the distances 1 and 2 .
この調整は第６図に示すように、距離の変化に
よつて、光の拡散・集束具合が変化するのを利用
して行われる。 As shown in FIG. 6, this adjustment is performed by utilizing the fact that the degree of diffusion and convergence of light changes as the distance changes.
考案が解決しようとする問題点
上記光学フアイバ等の投受光手段５，５を位置
決めして取付けようとしても、ヘツド１の内部に
投受光手段５、５が、どれだけ差し込まれたかを
見ることができないので、調整は極めて困難であ
つた。可視光を投光する光学フアイバの位置決め
は、実際に光を照射させてみればよいが、赤外光
線等の非可視光のものでは、投光させて見ても、
その光自体が見えないので、この方法は採用でき
ない。また受光用の光学フアイバではそれ自体が
光を発するわけではないので、可視光・非可視光
を問わず上記方法は採用できない。従つてこの調
整は取付工事現場では、殆どできないと言つてよ
い。このため第５図に示すように付け換えを可能
とするネジ６，６による固定方式を採用している
にもかかわらず、実際的には工事現場で光学フア
イバのみの付け換えができないことになつてい
た。Problems to be Solved by the Invention Even if one tries to position and install the light emitting and receiving means 5, 5 such as the optical fiber, it is not possible to see how far the light emitting and receiving means 5, 5 are inserted into the inside of the head 1. This made adjustments extremely difficult. The positioning of an optical fiber that emits visible light can be done by actually irradiating it with light, but with non-visible light such as infrared light, it is difficult to determine the position of an optical fiber that emits visible light.
This method cannot be used because the light itself cannot be seen. Furthermore, since the optical fiber for receiving light does not itself emit light, the above method cannot be used regardless of visible light or non-visible light. Therefore, it can be said that this adjustment is almost impossible at the installation work site. For this reason, even though a fixing method using screws 6, 6 that allows for replacement as shown in Figure 5 is adopted, in practice it is not possible to replace only the optical fiber at the construction site. was.
問題点を解決するための手段
上記問題点を解決するために提供された本考案
のコードリーダ用ヘツドは、読取り位置に対向さ
せて取付けられるハウジングに、一端にレンズを
固定し他端から光学フアイバ等の投受光手段を嵌
挿させる取付孔と、上記レンズとの距離を調整し
て上記投受光手段を固定する固定手段とを設けた
ものにおいて、上記ハウジングの外壁に、内部に
嵌挿した投受光手段を目視できる窓と、投受光手
段を位置決めする目印を設けたことを特徴とす
る。Means for Solving the Problems In order to solve the above problems, the code reader head of the present invention has a lens fixed to one end of the housing, which is mounted opposite the reading position, and an optical fiber inserted from the other end. A housing is provided with a mounting hole into which a light emitting/receiving means such as the above is inserted, and a fixing means for fixing the light emitting/receiving means by adjusting the distance to the lens. It is characterized by providing a window through which the light receiving means can be viewed and a mark for positioning the light emitting and receiving means.
作 用
上記目印に従えば、光学フアイバ等の投受光手
段の位置合わせを、容易に一定の精度をもつて行
うことができる。従つてコードリーダ用ヘツドに
対する投受光手段の取付け、交換が工事現場にお
いても迅速に行える。Operation If the above-mentioned marks are followed, the positioning of the light emitting/receiving means such as an optical fiber can be easily performed with a certain degree of accuracy. Therefore, the light emitting/receiving means can be quickly attached and replaced to the code reader head even at a construction site.
実施例
本考案の第１の実施例であるコードリーダ用ヘ
ツド１０を、第１図及び第２図について説明す
る。A code reader head 10 according to a first embodiment of the present invention will now be described with reference to FIGS.
図において、１１は矩形の金属板に穴開け加工
をしたハウジング、１２，１２は光学フアイバ等
の投受光手段の取付孔、１３，１３は取付孔１
２，１２の一端に固定した投光用及び受光用のレ
ンズ、１４，１４は取付孔の内部に嵌挿した投受
光手段を側方から目視できる窓（覗き窓）、１５，
１５は覗き窓１４，１４の縁に形成した位置決め
用の目印で、例えばハウジング１１の黒色塗装に
対応させて白線の塗装によつて形成されている。
１６，１６はセツトネジで、取付孔内に嵌挿され
た光学フアイバを側方から締付け固定する。１
７，１７はハウジング１１を所定の位置に固定す
るネジを挿通させる孔である。 In the figure, 11 is a housing made of a rectangular metal plate with holes drilled, 12 and 12 are mounting holes for light emitting and receiving means such as optical fibers, and 13 and 13 are mounting holes 1.
Lenses for projecting and receiving light fixed to one end of 2, 12; 14, 14 is a window (viewing window) through which the light projecting and receiving means inserted into the mounting hole can be viewed from the side; 15;
Reference numeral 15 denotes a positioning mark formed on the edge of the viewing windows 14, 14, and is formed, for example, by painting a white line to correspond to the black painting of the housing 11.
Reference numerals 16 and 16 are set screws, and the optical fiber inserted into the mounting hole is tightened and fixed from the side. 1
Reference numerals 7 and 17 are holes through which screws for fixing the housing 11 in a predetermined position are inserted.
上記コードリーダ用ヘツド１０に光学フアイバ
１８，１８を嵌挿させると、覗き窓１４，１４か
らその挿通状態を見ることができる。 When the optical fibers 18, 18 are inserted into the code reader head 10, the inserted state can be seen through the viewing windows 14, 14.
この実施例では光学フアイバ１８，１８の先端
口金１８ａ，１８ａの後端が、目印１５，１５と
一致するように位置決めし、この状態でセツトネ
ジ１６，１６を締付けば、光学フアイバの取付作
業が終了する。これによつて実線で示す投光範囲
Ａと点線で示す受光範囲Ｂを仕様通りに確実に得
ることができる。 In this embodiment, the rear ends of the tip caps 18a, 18a of the optical fibers 18, 18 are positioned so as to match the marks 15, 15, and the installation work of the optical fibers is completed by tightening the set screws 16, 16 in this state. do. This makes it possible to reliably obtain the light emitting range A shown by the solid line and the light receiving range B shown by the dotted line as specified.
本考案の目印を付けるコードリーダ用ヘツド
は、上記第１の実施例以外にも、種々の設計変更
が可能である。他の実施例を第３図乃至第４図に
夫々示す。 The head for a code reader that attaches a mark according to the present invention can be modified in various designs other than the first embodiment described above. Other embodiments are shown in FIGS. 3 and 4, respectively.
第３図に示す第２の実施例は、第１図に示す第
１の実施例において、覗き窓１４，１４に形成し
た目印を一本ではなく複数にしたものである。各
目印１５ａ，１５ａ……にはハウジング１１の先
端から検出位置までの距離を示す数字が付され
る。 The second embodiment shown in FIG. 3 differs from the first embodiment shown in FIG. 1 in that a plurality of marks are formed on the viewing windows 14 instead of one. A number indicating the distance from the tip of the housing 11 to the detection position is attached to each mark 15a, 15a, .
これによつて、検出位置からコードリーダ用ヘ
ツド１０を離す距離を、任意に選択できるよう
になる。 This makes it possible to arbitrarily select the distance at which the code reader head 10 is separated from the detection position.
第４図に示す第３の実施例は、内部に嵌挿した
投受光手段を目視できる窓を、ハウジングの一部
を透明体とすることによつて形成したものであ
る。すなわち、ハウジング１１の前側を不透明体
で形成し、後側の少なくとも片面の一部を透明体
で形成する。目印１５ａ，１５ａ……は、第１又
は第２の実施例に準じて付けられる。ここで前側
を不透明体で形成することは、ハウジング内での
光の通過による誤動作を防止するために必要不可
欠である。 In the third embodiment shown in FIG. 4, a window through which the light emitting/receiving means fitted therein can be viewed is formed by making a part of the housing transparent. That is, the front side of the housing 11 is made of an opaque material, and at least a portion of one side of the rear side is made of a transparent material. The marks 15a, 15a, . . . are attached according to the first or second embodiment. Here, forming the front side with an opaque material is essential in order to prevent malfunctions due to the passage of light within the housing.
なお以上の実施例では、ハウジング内に二本の
取付孔１２，１２を有し、投受光手段として、光
学フアイバを用いたものを示したが、投光又は受
光専用のヘツドでは取付孔は一本になるし、投受
光手段としては、LED等の投光素子やフオトダ
イオード等の受光素子を用いることもできる。投
光素子や受光素子を直接取付ける場合は光学フア
イバの代わりに電線を引き出すことになる。 In the above embodiment, the housing has two mounting holes 12, 12, and an optical fiber is used as the light emitting/receiving means. As the light emitting/receiving means, a light emitting element such as an LED or a light receiving element such as a photodiode may be used. When directly attaching a light emitting element or a light receiving element, an electric wire is drawn out instead of an optical fiber.
考案の効果
本考案によれば、コードリーダ用ヘツドに光学
フアイバを位置決めして取付ける作業が容易かつ
確実に行えるようになる。Effects of the invention According to the invention, it becomes possible to easily and reliably position and attach the optical fiber to the head for a code reader.
従つて取付工事の際にも、ハウジングに光学フ
アイバ等の投受光手段を取付け又は取換えること
ができるようになる。そして従来のように一体に
取付けられた多種類のコードリーダ用ヘツドを持
ち運ぶ必要がないので、作業性が極めて良くな
る。 Therefore, even during installation work, it becomes possible to attach or replace the light emitting/receiving means such as an optical fiber to the housing. Further, since there is no need to carry multiple types of code reader heads that are integrally attached as in the past, work efficiency is extremely improved.
また取付が容易なことは、コードリーダの製造
メーカにおける組付け作業をも容易化し、製造効
率を向上することになる。 Furthermore, ease of installation also facilitates the assembly work at the code reader manufacturer, improving manufacturing efficiency.
第１図及び第２図はコードリーダ用ヘツドの第
１の実施例を示す側面図及び平面図である。第３
図及び第４図は第２及び第３の実施例を夫々示す
図で、第３図はハウジングの部分拡大図、第４図
は側面図である。第５図は従来のコードリーダ用
ヘツドを用いたコード読取り状態を示す斜視図、
第６図はレンズと投受光手段との距離Ｌと光の集
束状態との関係を示す図である。
１０……コードリーダ用ヘツド、１１……ハウ
ジング、１２……取付孔、１３……レンズ、１４
……覗き窓、１５，１５ａ……目印。
1 and 2 are a side view and a plan view showing a first embodiment of a head for a code reader. Third
3 and 4 show the second and third embodiments, respectively, with FIG. 3 being a partially enlarged view of the housing, and FIG. 4 being a side view. FIG. 5 is a perspective view showing a code reading state using a conventional code reader head;
FIG. 6 is a diagram showing the relationship between the distance L between the lens and the light emitting/receiving means and the convergence state of light. 10... Head for code reader, 11... Housing, 12... Mounting hole, 13... Lens, 14
... Peephole, 15, 15a... Marker.
Claims (1)
グに、一端にレンズを固定し他端から光学フアイ
バ等の投受光手段を嵌挿させる取付穴と、上記レ
ンズとの距離を調整して上記投受光手段を固定す
る固定手段とを設けたものにおいて、 上記ハウジングの外壁に、内部に嵌挿した投受
光手段を目視できる窓と、投受光手段を位置決め
する目印を設けたことを特徴とするコードリーダ
用ヘツド。[Scope of Claim for Utility Model Registration] Adjusting the distance between the lens and a mounting hole in which a lens is fixed at one end and a light emitting/receiving means such as an optical fiber is inserted from the other end in a housing that is installed facing the reading position. and a fixing means for fixing the light emitting/receiving means, the outer wall of the housing is provided with a window through which the light emitting/receiving means fitted inside can be visually seen, and a mark for positioning the light emitting/receiving means. Features of the head for code readers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8130787U JPH0512833Y2 (en) | 1987-05-28 | 1987-05-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8130787U JPH0512833Y2 (en) | 1987-05-28 | 1987-05-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63192853U JPS63192853U (en) | 1988-12-12 |
| JPH0512833Y2 true JPH0512833Y2 (en) | 1993-04-05 |
Family
ID=30932926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8130787U Expired - Lifetime JPH0512833Y2 (en) | 1987-05-28 | 1987-05-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0512833Y2 (en) |
-
1987
- 1987-05-28 JP JP8130787U patent/JPH0512833Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63192853U (en) | 1988-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0778539A2 (en) | Latent image reading apparatus | |
| US5210588A (en) | Fingerprint identification apparatus for enhancing identification performance by forming an illumination source and a light conducting panel in a single body | |
| EP0634892B1 (en) | Light source device for an image processor | |
| US7348536B2 (en) | Light grid with housing | |
| US5780840A (en) | Close contact type image sensor having integrally moded reflective surfaces | |
| KR100243426B1 (en) | Led head and printer using it | |
| JPH0512833Y2 (en) | ||
| US6010073A (en) | Portable apparatus for reading an optical code | |
| JP2005099441A (en) | Turning operation detector | |
| US3819272A (en) | Projective-reflective optical apparatus | |
| US20060232778A1 (en) | Sensor system for a ring spinning machine | |
| US6738165B2 (en) | Image reading apparatus | |
| US4776683A (en) | Optical imaging device | |
| JP2003514690A (en) | Sensor to identify signs on ribbon | |
| CN219831828U (en) | Code reader | |
| JP2588667Y2 (en) | Reflective photo sensor | |
| EP0435109B1 (en) | A sensor assembly for sensing printed marks on a print medium | |
| JPH04131955U (en) | optical coupling device | |
| JP4636900B2 (en) | Sensor head for transmissive photoelectric switch | |
| US20250322187A1 (en) | Optical Sensor | |
| CN221550945U (en) | Safety grating | |
| CN213061806U (en) | Gate and gate device with same | |
| JP2589579Y2 (en) | Mounting structure of light emitting element for auto focus | |
| JPH0512832Y2 (en) | ||
| JPS5842956Y2 (en) | Reflective photoelectric detector |