JPH01255915A - Optical touch panel - Google Patents
Optical touch panelInfo
- Publication number
- JPH01255915A JPH01255915A JP63083064A JP8306488A JPH01255915A JP H01255915 A JPH01255915 A JP H01255915A JP 63083064 A JP63083064 A JP 63083064A JP 8306488 A JP8306488 A JP 8306488A JP H01255915 A JPH01255915 A JP H01255915A
- Authority
- JP
- Japan
- Prior art keywords
- light
- light receiving
- light emitting
- emitting element
- circuit
- 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 abstract description 22
- 230000008878 coupling Effects 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims description 8
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
Landscapes
- Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、発光素子と受光素子とを対向配置させた光結
合手段を有する光学式タッチパネルに関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an optical touch panel having an optical coupling means in which a light emitting element and a light receiving element are arranged facing each other.
従来、この種の光学式タッチパネルは、第３図に示すよ
うに赤外線透過樹脂モールドからなる枠体１の一辺に複
数個の発光素子２を配置し、その対向辺に複数個の受光
素子３を配置した光結合構成を有している。Conventionally, this type of optical touch panel has a plurality of light emitting elements 2 arranged on one side of a frame 1 made of an infrared transmitting resin mold, and a plurality of light receiving elements 3 arranged on the opposite side, as shown in Fig. 3. It has an optical coupling configuration.
上述した従来の光学式タッチパネルにおいて、光結合手
段は、複数個の発光素子２と複数個の受光素子３とがそ
れぞれの辺に固定される配置構造となるので、周囲の環
境条件によシ受光素子３に照明光等の直接光が入射する
と、検出能力が極端に低下し、検出不可能となりやすい
という問題があった。In the conventional optical touch panel described above, the optical coupling means has an arrangement structure in which a plurality of light emitting elements 2 and a plurality of light receiving elements 3 are fixed to each side, so that the light reception depends on the surrounding environmental conditions. When direct light such as illumination light is incident on the element 3, there is a problem in that the detection ability is extremely reduced and detection is likely to become impossible.
したがって本発明は、前述した従来の問題に鑑みてなさ
れたものであシ、その目的は環境条件に影響されること
なく、検出能力を向上させることができる光学式タッチ
パネルを提供することにある０
〔課題を解決するための手段〕
本発明による光学式タッチパネルは、各辺に相対向して
受光素子と発光素子とを交互に配置した光結合手段と、
受光素子からの周囲光検出信号を比較する比較手段と、
その比較信号にしたがって光結合手段の各辺を受光側も
しくは発光側を選択する選択手段とを有している。Therefore, the present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide an optical touch panel that can improve detection ability without being affected by environmental conditions. [Means for Solving the Problems] The optical touch panel according to the present invention includes an optical coupling means in which light-receiving elements and light-emitting elements are alternately arranged opposite to each other on each side;
Comparison means for comparing ambient light detection signals from the light receiving element;
and selection means for selecting each side of the optical coupling means as a light receiving side or a light emitting side according to the comparison signal.
本発明において、光結合手段は各辺に相対向して発光素
子と受光素子とを交互に配置しているので、受光部側に
周囲光が直接照射されることが回避される。In the present invention, since the optical coupling means alternately arranges the light-emitting elements and the light-receiving elements facing each other on each side, direct irradiation of ambient light onto the light-receiving part side is avoided.
次に本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例による光学式タッチパネルの
構成を示す要部平面図、第３図はその回路ブロック図を
示したものであシ、前述の図と同一部分には同一符号を
付しである。まず、第１図において、赤外線透過樹脂モ
ールドからなる枠体１の一辺には、発光素子２および受
光素子３が交互に配置され、さらにその対向辺には、そ
れぞれ一対となる受光素子３′および発光素子２′が交
互に配置されて２組の光結合手段が構成されている。ま
た、第２図において、第１図に示す一辺側の受光素子３
の受光回路４とその発光素子２の発光素子駆動回路５お
よびその対向辺の受光素子３′の受光回路４′とその発
光素子２′の発光素子駆動回路５′は、相対する一対の
受発光素子ベアを形成しておシ、受光回路４，４′によ
シ各対向辺の周囲光を検出するとともにその周囲光検出
信号を比較回路６で比較し、光量の大きい方を発光側、
光量の小さい方を受光側とする選択信号を選択信号保持
回路Ｔにセットする。そして、セットされた信号は受光
信号選択回路８および発光素子駆動回路５，５′に出力
され、第１図の発光素子２およびその受光素子３の選択
もしくは発光素子２′およびその受光素子３′の選択を
行なう。この選択信号の保持はある一定の周期で実行す
ることによシ、周囲環境条件の変化に対応する。このよ
うに各辺の光量を検出し、光量の小さい方を受光側に切
替えを行なうことによシ、検出能力を高めることができ
る。Fig. 1 is a plan view of essential parts showing the configuration of an optical touch panel according to an embodiment of the present invention, and Fig. 3 is a circuit block diagram thereof. It is attached. First, in FIG. 1, a light emitting element 2 and a light receiving element 3 are arranged alternately on one side of a frame 1 made of an infrared transmitting resin mold, and a pair of light receiving elements 3' and 3' are arranged on the opposite side, respectively. The light emitting elements 2' are arranged alternately to constitute two sets of optical coupling means. In addition, in FIG. 2, the light receiving element 3 on one side shown in FIG.
The light receiving circuit 4 of the light receiving circuit 4, the light emitting element driving circuit 5 of the light emitting element 2, the light receiving circuit 4' of the light receiving element 3' on the opposite side, and the light emitting element driving circuit 5' of the light emitting element 2' are a pair of opposing light receiving/emitting elements. By forming an element bare, the light receiving circuits 4 and 4' detect the ambient light on each opposing side, and the ambient light detection signals are compared by the comparing circuit 6, and the one with the larger amount of light is selected as the light emitting side,
A selection signal is set in the selection signal holding circuit T so that the side with the smaller amount of light is the light receiving side. Then, the set signal is output to the light receiving signal selection circuit 8 and the light emitting element drive circuits 5, 5', and selects the light emitting element 2 and its light receiving element 3 shown in FIG. 1 or the light emitting element 2' and its light receiving element 3' Make a selection. By holding this selection signal at a certain period, it is possible to respond to changes in the surrounding environmental conditions. By detecting the amount of light on each side in this way and switching the side with the smaller amount of light to the light receiving side, the detection ability can be improved.
以上説明したように本発明によれば、周囲光の入射によ
シ、受光部側が直接照射されることを避けられるので、
周囲環境条件による影響が極力抑えられ、検出能力を高
めることができ７るという極めて優れた効果が得られる
。As explained above, according to the present invention, it is possible to avoid direct irradiation of the light receiving part side due to the incidence of ambient light.
Extremely excellent effects can be obtained in that the influence of surrounding environmental conditions can be suppressed as much as possible and the detection ability can be improved.
第１図は本発明の一実施例による光学式タッチパネルの
構成を示す要部平面図、第２図はその回路ブロックを示
す図、第３図は従来の光学式タッチパネルを示す要部平
面図である。
１・・・・枠体、２．２’ ・・・・発光素子、３．３
′・・・・受光素子、４．４’ ・・・・受光回路、５
．５’ ・拳・・発光素子駆動回路、６・・拳・比較回
路、７＠・・・選択信号保持回路、８・・・・受光信号
選択回路。FIG. 1 is a plan view of essential parts showing the configuration of an optical touch panel according to an embodiment of the present invention, FIG. 2 is a diagram showing its circuit block, and FIG. 3 is a plan view of essential parts showing a conventional optical touch panel. be. 1...Frame body, 2.2'...Light emitting element, 3.3
'... Light receiving element, 4.4'... Light receiving circuit, 5
．． 5' - Fist: light emitting element drive circuit, 6: fist: comparison circuit, 7@... selection signal holding circuit, 8... light receiving signal selection circuit.
Claims (1)
は相対する受光素子と発光素子とを交互に配置した光結
合手段と、前記光結合手段の各辺の受光素子から検出さ
れた周囲光検出信号を比較する比較手段と、比較信号に
基づいて光結合手段の各辺を受光部側もしくは発光部側
に選択する選択手段とを備えたことを特徴とする光学式
タッチパネル。An optical coupling means in which a light emitting element and a light receiving element are arranged alternately on one side, and an opposing light receiving element and a light emitting element are arranged alternately on the opposite side, and a surrounding area detected from the light receiving element on each side of the optical coupling means. 1. An optical touch panel comprising: a comparison means for comparing light detection signals; and a selection means for selecting each side of the optical coupling means as a light receiving section side or a light emitting section side based on the comparison signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63083064A JPH01255915A (en) | 1988-04-06 | 1988-04-06 | Optical touch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63083064A JPH01255915A (en) | 1988-04-06 | 1988-04-06 | Optical touch panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01255915A true JPH01255915A (en) | 1989-10-12 |
Family
ID=13791753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63083064A Pending JPH01255915A (en) | 1988-04-06 | 1988-04-06 | Optical touch panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01255915A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003099201A (en) * | 2001-09-21 | 2003-04-04 | Aiphone Co Ltd | Optical touch panel device |
| JP2006092227A (en) * | 2004-09-24 | 2006-04-06 | Tietech Co Ltd | Touch panel device |
| KR100619584B1 (en) * | 2006-01-19 | 2006-09-01 | 주식회사 넥시오 | Detail position detecing method and error correcting method in touch panel system |
| EP2350780A1 (en) * | 2008-10-02 | 2011-08-03 | Korea Institute of Science and Technology | Optical recognition user input device and method of recognizing input from user |
-
1988
- 1988-04-06 JP JP63083064A patent/JPH01255915A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003099201A (en) * | 2001-09-21 | 2003-04-04 | Aiphone Co Ltd | Optical touch panel device |
| JP2006092227A (en) * | 2004-09-24 | 2006-04-06 | Tietech Co Ltd | Touch panel device |
| KR100619584B1 (en) * | 2006-01-19 | 2006-09-01 | 주식회사 넥시오 | Detail position detecing method and error correcting method in touch panel system |
| EP2350780A1 (en) * | 2008-10-02 | 2011-08-03 | Korea Institute of Science and Technology | Optical recognition user input device and method of recognizing input from user |
| EP2350780A4 (en) * | 2008-10-02 | 2013-06-12 | Korea Inst Sci & Tech | Optical recognition user input device and method of recognizing input from user |
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