JPH088436Y2 - Optical sensor measurement medium - Google Patents
Optical sensor measurement mediumInfo
- Publication number
- JPH088436Y2 JPH088436Y2 JP2636590U JP2636590U JPH088436Y2 JP H088436 Y2 JPH088436 Y2 JP H088436Y2 JP 2636590 U JP2636590 U JP 2636590U JP 2636590 U JP2636590 U JP 2636590U JP H088436 Y2 JPH088436 Y2 JP H088436Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical sensor
- medium
- measurement
- measuring
- contact
- 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
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、反射型の光センサーを測定・評価するため
の基準となる光センサー測定媒体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 sensor measuring medium that serves as a reference for measuring and evaluating a reflection type optical sensor.
（従来の技術） 量産された反射型の光センサーを総合的に測定・評価
する場合、光センサーの測定面に基準となる測定媒体を
押当して、光センサーから投光される光量とその反射光
量とをまとめて測定するのが最も簡単で確実である。こ
の場合、測定媒体の形状や材質を適宜選定することによ
り実際の使用環境に最も近い状態のデータを得ることが
できる。(Prior Art) When comprehensively measuring and evaluating a mass-produced reflective optical sensor, the reference measurement medium is pressed against the measurement surface of the optical sensor, and the amount of light projected from the optical sensor and its It is easiest and sure to measure the reflected light quantity together. In this case, by appropriately selecting the shape and material of the measurement medium, it is possible to obtain data in a state closest to the actual use environment.
この場合、従来の測定媒体Ｄとして例えばOCR用紙の
ような実際の被測定物Ｃ、或はそれに近い状態のものが
使用されていた。光センサーＡが反射型のものの場合、
前記測定媒体Ｄは反射率が被測定物Ｃの反射率と同等の
ものが望ましく、特に経時変化や反射率の均一性等を考
慮すると金属製やセラミック製のものが望ましい。In this case, as the conventional measuring medium D, an actual object to be measured C such as OCR paper, or a state close to it is used. If the optical sensor A is a reflective type,
It is desirable that the measurement medium D has a reflectance equivalent to that of the object C to be measured, and in particular, a metal or ceramic medium is desirable in consideration of changes with time and uniformity of reflectance.
（考案が解決しようとする課題） しかしながら、前記のような金属製或はセラミック製
の測定媒体Ｄでは、光センサーＡの測定面Ｂの形状が平
面でないとき、例えば摺動型光センサー等のように測定
面Ｂが突出する曲面の場合には、同測定面Ｂと測定媒体
Ｄの接触面Ｅとの加工寸法精度の違いにより、両面Ｂ、
Ｅの接触面積が大きく変化してしまう。例えば、第６図
のように測定媒体Ｄの接触面Ｅの曲率半径R0が光センサ
ーＡの測定面Ｂの曲率半径ｒより大きい場合には両面
Ｂ、Ｅの接触は線接触となるため、光センサーＡの出力
が不安定になる。逆に第７図のように測定媒体Ｄの接触
面Ｅの曲率半径R0が光センサーＡの測定面Ｂの曲率半径
ｒより小さい場合には、両面Ｂ、Ｅの間に隙間ができ、
この隙間が大きくなると光センサーＡの出力が小さくな
る。このように、従来の光センサー測定媒体では何れの
場合にも大きな出力変化が生じるため、光センサーの正
しい測定・評価が困難であった。(Problems to be Solved by the Invention) However, in the above-described metal or ceramic measuring medium D, when the measurement surface B of the optical sensor A is not flat, for example, a sliding optical sensor or the like is used. In the case where the measurement surface B is a curved surface that protrudes to both sides, due to the difference in processing dimensional accuracy between the measurement surface B and the contact surface E of the measurement medium D, both surfaces B,
The contact area of E changes greatly. For example, when the radius of curvature R 0 of the contact surface E of the measurement medium D is larger than the radius of curvature r of the measurement surface B of the optical sensor A as shown in FIG. The output of the optical sensor A becomes unstable. On the contrary, as shown in FIG. 7, when the radius of curvature R 0 of the contact surface E of the measurement medium D is smaller than the radius of curvature r of the measurement surface B of the optical sensor A, a gap is formed between the two surfaces B and E,
When this gap becomes large, the output of the optical sensor A becomes small. As described above, in the conventional optical sensor measuring medium, a large output change occurs in any case, so that it is difficult to correctly measure and evaluate the optical sensor.
（考案の目的） 本考案の目的は、光センサーの出力を安定して正しい
測定・評価を可能とする光センサー測定媒体を提供する
ことにある。(Object of the Invention) An object of the present invention is to provide an optical sensor measuring medium that enables stable and correct measurement and evaluation of the output of the optical sensor.
（課題を解決するための手段） 本考案の光センサー測定媒体は第１図〜第３図のよう
に、反射型の光センサーＡの測定面Ｂを測定媒体１の曲
面を有する接触面２に押当し、同センサーＡから投光さ
れる光を同測定媒体１により反射させ、その反射光を前
記光センサーＡにより受光して同センサーＡを測定・評
価するための光センサー測定媒体において、前記測定媒
体１が光センサーＡの測定面Ｂを押しつけると変形可能
な弾性体で形成され、同測定媒体１の接触面２が、光セ
ンサーＡの測定面Ｂの曲率半径ｒより大きい曲率半径Ｒ
の曲面か、または光センサーＡの測定面Ｂと逆向きに突
出する曲面に形成されてなることを特徴とするものであ
る。(Means for Solving the Problem) In the optical sensor measuring medium of the present invention, as shown in FIGS. 1 to 3, the measuring surface B of the reflection type optical sensor A is changed to the contact surface 2 having the curved surface of the measuring medium 1. In the optical sensor measurement medium for pressing and reflecting the light projected from the sensor A by the measurement medium 1 and receiving the reflected light by the optical sensor A to measure and evaluate the sensor A, The measurement medium 1 is formed of an elastic body that can be deformed when the measurement surface B of the optical sensor A is pressed, and the contact surface 2 of the measurement medium 1 has a curvature radius R larger than the curvature radius r of the measurement surface B of the optical sensor A.
Or a curved surface protruding in the opposite direction to the measurement surface B of the optical sensor A.
（作用） 本考案の光センサー測定媒体では第１図（ａ）のよう
に、測定媒体１の接触面２が、光センサーＡの測定面Ｂ
の曲率半径ｒより大きい曲率半径Ｒの曲面か、または光
センサーＡの測定面Ｂと逆向きに突出する曲面に形成さ
れているので、同測定媒体１と光センサーＡとを無荷重
で当接すると両者は線接触する。この状態から第１図
（ｂ）のように光センサーＡを適宜荷重Ｆにより測定媒
体１に押付けると、同測定媒体１が弾性体で形成されて
いるので、同測定媒体１の接触面２が光センサーＡの測
定面Ｂの形状に適合するように弾性変形し、両者が面接
触になる。このときの押付け荷重Ｆと接触面積とは互い
に比例関係にあるので、同荷重Ｆを適宜選定することに
より所望とする接触面積を得ることができ、測定媒体１
と光センサーＡとの接触状態を常に一定にすることがで
きる。(Operation) In the optical sensor measuring medium of the present invention, the contact surface 2 of the measuring medium 1 is the measuring surface B of the optical sensor A as shown in FIG.
Since it is formed on a curved surface having a radius of curvature R larger than the radius of curvature r or a curved surface protruding in the opposite direction to the measurement surface B of the optical sensor A, the measurement medium 1 and the optical sensor A are brought into contact with each other without load. Then, the two come into line contact. From this state, when the optical sensor A is pressed against the measuring medium 1 by the load F as shown in FIG. 1B, the measuring medium 1 is formed of an elastic body, so that the contact surface 2 of the measuring medium 1 is formed. Elastically deforms to conform to the shape of the measurement surface B of the optical sensor A, and the two are in surface contact. Since the pressing load F and the contact area at this time are in a proportional relationship with each other, a desired contact area can be obtained by appropriately selecting the load F, and the measurement medium 1
The contact state between the optical sensor A and the optical sensor A can be kept constant.
なお、本考案の光センサー測定媒体において、第４図
のように測定媒体１の接触面２の曲率半径Ｒを光センサ
ーＡの測定面Ｂの曲率半径ｒとほぼ同一にすることが考
えられるが、そのようにすると測定媒体１に光センサー
Ａを当接させる際に両者の間に空気が詰まって抜けにく
くなり、両者の間に隙間ができて出力が小さくなる。ま
た逆に空気が抜けると両者が完全に密着して出力が激増
する。いずれにしても測定媒体１の接触面２の曲率半径
Ｒを光センサーＡの測定面Ｂの曲率半径ｒとほぼ同一と
すると出力変化が大きく、望ましくない。In the optical sensor measuring medium of the present invention, it is possible to make the radius of curvature R of the contact surface 2 of the measuring medium 1 substantially the same as the radius of curvature r of the measuring surface B of the optical sensor A as shown in FIG. By doing so, when the optical sensor A is brought into contact with the measurement medium 1, air is clogged between them to make it difficult to escape, and a gap is formed between them to reduce the output. On the other hand, when the air escapes, the two completely come into close contact with each other and the output increases dramatically. In any case, if the radius of curvature R of the contact surface 2 of the measuring medium 1 is made substantially the same as the radius of curvature r of the measuring surface B of the optical sensor A, the output change is large, which is not desirable.
（実施例） 第１図〜第３図は本考案の光センサー測定媒体の各種
実施例である。(Embodiment) FIGS. 1 to 3 are various embodiments of the optical sensor measuring medium of the present invention.
これらの図に示す１は光センサーを測定・評価するた
めの基準となる測定媒体であり、この測定媒体１は弾性
体で形成されている。この弾性体としては、経時変化に
よって変色して反射率が変化することがないように、な
るべく混合物等の少ないものが望ましい。また、測定を
容易にするため白色とするのが望ましい。このような弾
性体としては例えば、シリコン樹脂等がある。Reference numeral 1 shown in these drawings is a measurement medium that serves as a reference for measuring and evaluating the optical sensor, and the measurement medium 1 is formed of an elastic body. As this elastic body, it is desirable that the amount of the mixture and the like is as small as possible so that the elastic body does not change its color due to aging and its reflectance does not change. In addition, it is desirable that the color is white in order to facilitate the measurement. An example of such an elastic body is silicon resin.
第１図の２は測定媒体１に形成された接触面であり、
この接触面２は光センサーＡの測定面Ｂの曲率半径ｒよ
り大きい曲率半径Ｒで外側に突出する曲面に形成されて
いる。第１図では接触面２の幅方向中央部の曲率半径Ｒ
を無限大として平面状に形成されている。これにより、
同接触面２と光センサーＡの測定面Ｂとを無荷重で当接
させると両面が線接触し、さらに両者を適宜加重Ｆによ
って押付けると、前記測定媒体１が弾性変形して両者が
面接触するようにしてある。Reference numeral 2 in FIG. 1 is a contact surface formed on the measuring medium 1,
The contact surface 2 is formed as a curved surface protruding outward with a curvature radius R larger than the curvature radius r of the measurement surface B of the optical sensor A. In FIG. 1, the radius of curvature R of the central portion of the contact surface 2 in the width direction is R.
Is infinite and formed in a plane. This allows
When the contact surface 2 and the measurement surface B of the optical sensor A are brought into contact with each other without a load, both surfaces come into line contact with each other, and when the both are pressed by a proper load F, the measurement medium 1 is elastically deformed and both surfaces are in contact with each other. I'm in contact.
第２図の測定媒体１は接触面２のＲを大きくして全域
を完全な平面にしたものである。The measurement medium 1 shown in FIG. 2 has a contact surface 2 with a large R, so that the entire area is a completely flat surface.
本考案の光センサー測定媒体における接触面２は、第
３図のように光センサーＡの測定面Ｂに逆向きに突出す
る曲面に形成してもよく、このようにしても前記と同様
に適宜荷重Ｆの下で両面が面接触する。The contact surface 2 of the optical sensor measuring medium of the present invention may be formed as a curved surface projecting in the opposite direction to the measuring surface B of the optical sensor A as shown in FIG. Both surfaces come into surface contact under the load F.
ちなみに前記した各実施例の測定媒体１では、前記接
触面２の外周にそれより下方に突出する被嵌部５を設け
て、測定媒体１が光センサーＡに被さるようにしてあ
る。By the way, in the measuring medium 1 of each of the above-described embodiments, the fitting portion 5 protruding downward is provided on the outer circumference of the contact surface 2 so that the measuring medium 1 covers the optical sensor A.
前記接触面２の形状やその曲率半径は、測定媒体１の
弾性体の材質、所望する接触面積及び前記荷重等により
適宜選定すればよい。The shape of the contact surface 2 and the radius of curvature thereof may be appropriately selected depending on the material of the elastic body of the measurement medium 1, the desired contact area, the load, and the like.
（考案の効果） 本考案の光センサー測定媒体では第１図〜第３図のよ
うに、測定媒体１が弾性体により形成され、しかも同測
定媒体１の接触面２が、光センサーＡの測定面Ｂの曲率
半径ｒより大きい曲率半径Ｒの曲面か、または光センサ
ーＡの測定面Ｂに逆向きに突出する曲面に形成されてい
るので、光センサーＡを適宜荷重Ｆで測定媒体１に押付
けると、測定媒体１が変形して所望とする接触面積が得
られ、測定媒体１と光センサーＡとの接触状態が常に一
定となり、光センサーＡの出力が安定し、正確で簡易な
光センサーＡの測定・評価を行うことができる。また、
センサーの測定面Ｂと測定媒体Ｄの接触面Ｅの加工精度
にとらわれず、それらの加工が容易になる。(Effect of the Invention) In the optical sensor measuring medium of the present invention, as shown in FIGS. 1 to 3, the measuring medium 1 is formed of an elastic body, and the contact surface 2 of the measuring medium 1 is measured by the optical sensor A. Since the curved surface has a curvature radius R larger than the curvature radius r of the surface B or a curved surface protruding in the opposite direction to the measurement surface B of the optical sensor A, the optical sensor A is appropriately pressed onto the measurement medium 1 with a load F. When attached, the measurement medium 1 is deformed to obtain a desired contact area, the contact state between the measurement medium 1 and the optical sensor A is always constant, the output of the optical sensor A is stable, and an accurate and simple optical sensor is provided. A can be measured and evaluated. Also,
The processing accuracy of the contact surface E of the measurement surface B of the sensor and the contact surface E of the measurement medium D does not matter, and the processing is facilitated.
第１図ａは本考案の光センサー測定媒体の一実施例を示
す側面図、同図ｂは同図ａの光センサー測定媒体の使用
説明図、第２図、第３図は本考案の光センサー測定媒体
の他の実施例を示す側面図、第４図は本願考案とは異な
る光センサー測定媒体の側面図、第５図は光センサーの
使用説明図、第６図、第７図は従来の光センサー測定媒
体の使用説明図である。 １は測定媒体、Ａは光センサー ２は接触面、Ｂは測定面 Ｒは接触面の曲率半径、ｒは測定面の曲率半径FIG. 1a is a side view showing an embodiment of the optical sensor measuring medium of the present invention, FIG. 1b is an explanatory view of using the optical sensor measuring medium of FIG. A, FIG. 2 and FIG. FIG. 4 is a side view showing another embodiment of the sensor measuring medium, FIG. 4 is a side view of an optical sensor measuring medium different from the present invention, FIG. 5 is an explanatory view of using the optical sensor, FIG. 6 and FIG. It is an explanatory view of the use of the optical sensor measurement medium. 1 is the measurement medium, A is the optical sensor 2, contact surface is B, measurement surface R is the radius of curvature of the contact surface, r is the radius of curvature of the measurement surface
───────────────────────────────────────────────────── フロントページの続き (72)考案者 小林 健造 東京都千代田区丸の内２―６―１ 古河電 気工業株式会社内 (72)考案者 石田 実雄 大阪府堺市北花田町３丁27番地２ 株式会 社ミネルバ内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenzo Kobayashi 2-6-1 Marunouchi, Chiyoda-ku, Tokyo Furukawa Electric Co., Ltd. (72) Creator: Mitsuo Ishida 3 27-2 Kitahanada-cho, Sakai-shi, Osaka Stocks Within Minerva
Claims (1)
を測定媒体（１）の曲面を有する接触面（２）に押当
し、同センサー（Ａ）から投光される光を同測定媒体
（１）により反射させ、その反射光を前記光センサー
（Ａ）により受光して同センサー（Ａ）を測定・評価す
るための光センサー測定媒体において、前記測定媒体
（１）が光センサー（Ａ）の測定面（Ｂ）を押しつける
と変形可能な弾性体で形成され、同測定媒体（１）の接
触面（２）が、光センサー（Ａ）の測定面（Ｂ）の曲率
半径（ｒ）より大きい曲率半径（Ｒ）の曲面か、または
光センサー（Ａ）の測定面（Ｂ）と逆向きに突出する曲
面に形成されてなることを特徴とする光センサー測定媒
体。1. A measuring surface (B) of a reflection type optical sensor (A).
Is pressed against the curved contact surface (2) of the measurement medium (1), the light projected from the sensor (A) is reflected by the measurement medium (1), and the reflected light is reflected by the optical sensor (1). An optical sensor measuring medium for receiving light by A) to measure and evaluate the sensor (A), the elastic body being deformable when the measuring medium (1) presses the measuring surface (B) of the optical sensor (A). And the contact surface (2) of the measurement medium (1) is a curved surface having a curvature radius (R) larger than the curvature radius (r) of the measurement surface (B) of the optical sensor (A), or the optical sensor ( An optical sensor measuring medium, which is formed on a curved surface protruding in a direction opposite to the measuring surface (B) of A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2636590U JPH088436Y2 (en) | 1990-03-15 | 1990-03-15 | Optical sensor measurement medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2636590U JPH088436Y2 (en) | 1990-03-15 | 1990-03-15 | Optical sensor measurement medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03117743U JPH03117743U (en) | 1991-12-05 |
| JPH088436Y2 true JPH088436Y2 (en) | 1996-03-06 |
Family
ID=31529265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2636590U Expired - Lifetime JPH088436Y2 (en) | 1990-03-15 | 1990-03-15 | Optical sensor measurement medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH088436Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4825930B2 (en) * | 2010-01-13 | 2011-11-30 | 有限会社 二文字屋 | Eye mask |
-
1990
- 1990-03-15 JP JP2636590U patent/JPH088436Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03117743U (en) | 1991-12-05 |
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