JPS5882117A - Optical encoder - Google Patents
Optical encoderInfo
- Publication number
- JPS5882117A JPS5882117A JP17975781A JP17975781A JPS5882117A JP S5882117 A JPS5882117 A JP S5882117A JP 17975781 A JP17975781 A JP 17975781A JP 17975781 A JP17975781 A JP 17975781A JP S5882117 A JPS5882117 A JP S5882117A
- Authority
- JP
- Japan
- Prior art keywords
- slit
- light
- light receiving
- phase
- fixed
- 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 13
- 101700004678 SLIT3 Proteins 0.000 abstract description 19
- 102100027339 Slit homolog 3 protein Human genes 0.000 abstract description 19
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract 2
- 239000011295 pitch Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 238000005530 etching Methods 0.000 description 2
- 102100025490 Slit homolog 1 protein Human genes 0.000 description 1
- 101710123186 Slit homolog 1 protein Proteins 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- XAQHXGSHRMHVMU-UHFFFAOYSA-N [S].[S] Chemical compound [S].[S] XAQHXGSHRMHVMU-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/34707—Scales; Discs, e.g. fixation, fabrication, compensation
- G01D5/34715—Scale reading or illumination devices
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は尤ギ式エンコーダに１糸り、特に光学式タコメ
ータ及びロータリ式エンコーダ等に適用すルｆｔ＝学式
エンコーダに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a linear encoder, and more particularly to a linear encoder that is applied to optical tachometers, rotary encoders, and the like.
従来、光学式エンコーダは、回転運動の速度や位置や回
転方向に対応する元敞を、−亡れら速度や位１ａの変化
に比ｙリシて光敏を時間的に変化せしめるためにスリッ
トの他に固定スリットｉ設けて、スリットの動く方向を
１個の発光素子と２個の受光素子を設けて受光素子の各
々の出力の位相を違えていた。Conventionally, optical encoders have been equipped with slits or other means to temporally change the optical sensitivity in relation to changes in speed and position 1a, which correspond to the speed, position, and direction of rotational motion. A fixed slit i was provided in the slit, one light emitting element and two light receiving elements were provided, and the phases of the outputs of the respective light receiving elements were made different in the direction in which the slit moved.
この従来の光学式エンコーダの構造は第１図の断面図に
示すようになっておシ、板ばね２とハブ４によって固定
された回転スリツ′ト３は小４じか圧入等でモードルシ
ャフト１に取付けられている。The structure of this conventional optical encoder is as shown in the cross-sectional view of Fig. 1.The rotary slit 3 fixed by the leaf spring 2 and the hub 4 is connected to the mold shaft by a small 4-way or press-fit. It is attached to 1.
回転スリット３の上側にベース４に固定された回路基板
５と、回路５とベース４にて固定された補強板６と固定
スリット７があり、回路基板５に保持された受光素子８
と９がある。下側には、ベース４に保持された発光素子
１０があり、上記ベース４はねじ等によりエンドプラケ
、ット１１に固定される構成から成っている。第１図の
受光素子８と９の配置の・上面図を第２図に示す。受光
素子８と９はシャフト１の中心に対する角度θ。−９０
度の関係に配置され°ており、その出力は電気的処理に
より第３図のよう゛に受光素子８によりＡ相が受光素子
９によりＢ＃が出力されＡ相とＢ相の位相はθ、／４＝
９０度となる出力が得られるように回転スリット３が第
４図に固定スリット７が弔５図の平面図に示す形状にな
っている二
第４図の回転スリット３は、特に光が透過する遮光部１
３と、光を遮断する遮光部１４とを強調して示している
。この透光部１３と遮光部１４との角度ピッチを夫々θ
、とθ、とし、スリットの内径と外径を夫々Ｒ１とａ、
とする。ここで上記透光部１３と遮光部１４とは回転ス
リット３の全円周に渡って一定の角度ピッチθ８．θ、
テ配列されている。次に第５図に示す固定スリット７は
、特に光遮光部１５と光遮光部１６を強調して示してめ
る。この光遮光部１５と光遮光部１６との角度ピッチ全
夫々０１′とθ、ｌとし、θ、は、角度ピンチ０１′十
〇、′の煩数培に（θ、′十θｔ’）／４ピッチ分全プ
ラスした、すなわち
θ４−ｎ（θ、′＋θ１勺±（θ、′十θｓ’）／４こ
こで、ｎ（ｉ正数１．２．３−、・・・である。There are a circuit board 5 fixed to a base 4 above the rotating slit 3, a reinforcing plate 6 fixed to the circuit 5 and the base 4, and a fixed slit 7, and a light receiving element 8 held on the circuit board 5.
and 9. On the lower side, there is a light emitting element 10 held on a base 4, and the base 4 is fixed to an end plaque 11 with screws or the like. A top view of the arrangement of the light receiving elements 8 and 9 shown in FIG. 1 is shown in FIG. The light receiving elements 8 and 9 are at an angle θ with respect to the center of the shaft 1. -90
Through electrical processing, the outputs are as shown in Figure 3: A phase is output from the light receiving element 8, B# is output from the light receiving element 9, and the phases of the A and B phases are θ, /4=
The rotating slit 3 has the shape shown in Fig. 4 and the fixed slit 7 has the shape shown in the plan view of Fig. 5 so that an output of 90 degrees can be obtained.The rotating slit 3 shown in Fig. 4 is particularly transparent to light. Light shielding part 1
3 and the light shielding part 14 that blocks light are highlighted. The angular pitch between the light-transmitting part 13 and the light-blocking part 14 is set to θ.
, and θ, and the inner and outer diameters of the slit are R1 and a, respectively.
shall be. Here, the light transmitting portion 13 and the light shielding portion 14 have a constant angular pitch θ8 over the entire circumference of the rotating slit 3. θ,
It is arranged in a row. Next, in the fixed slit 7 shown in FIG. 5, the light shielding part 15 and the light shielding part 16 are particularly emphasized. The total angular pitch of the light shielding part 15 and the light shielding part 16 is 01' and θ, l, respectively, and θ is the multiplication of the angle pinch 01'10,' (θ, '10θt')/ 4 pitches are all plus, that is, θ4-n(θ,'+θ1±(θ,'10θs')/4, where n(i positive number 1.2.3-, . . . ).
なる角度ヒリチとし、スリットの内径と外径を夫夫Ｒ１
′°とＢ 、／とする。ここで上記光遮光部１５と光遮
光部１６とは一定の角度ピッチθ１／とθ２／とで複数
個、角度ピッチθ３だけ離れて左右対称に配列されると
共にｔ上記回転スリット周波数度ピッチθ１．θ、に対
し、灰の関係
θ、工θ１１ θ、工θ、ｌが与えられる
。次に上記回転スリット３の内径Ｒ８及びＲ２と、固定
スリット７の内径ＲＩ′及び外径Ｒ＋！’との関係は、
Ｒ１中ｈ′ もしくは しくａ１’
Ｒ１中Ｂ 、 ／ もしくは Ｒｔ ＞ Ｒｔ’によ
り、光の漏れを防ぐ様に与えられている。The inner diameter and outer diameter of the slit are set to R1.
′° and B, /. Here, the light shielding parts 15 and the light shielding parts 16 are arranged symmetrically at a constant angular pitch θ1/ and θ2/, separated by an angular pitch θ3, and the rotation slit frequency pitch θ1. For θ, the relationship θ of ash, θ11 θ, θ, l are given. Next, the inner diameters R8 and R2 of the rotating slit 3, and the inner diameter RI' and outer diameter R+ of the fixed slit 7! The relationship with ' is given to prevent light leakage by h' in R1 or a1' B in R1, / or Rt >Rt'.
以上の第１図、第２図、第４図、第５図に示された従来
の光学式１ンコーダの動作は、次の様になる。のめに、
発光素子１０ｔ−通′成した状態でモードルシャフト１
を回転させると、その回転に従い回転スリット３も回転
する。回転スリット３が回転している状態で回転スリッ
ト３の透光部１３と、固定スリット７の透光部１５が一
致する時は、上記発光素子１０の光が受光素子８と９に
照射されるため、電気的出力が発生する。一方回転スリ
ット３の遮光部１４と固定スリット７の遮光部とが一致
する時は、光は受光素子８と９に照射されないため、電
気的出力は発生しない。ここで受光素子８は第５図の左
側スリット部に、受光素子９は右側のスリット部に対応
して配置されているので、各々の電気的出力は、上記角
度ピッチ分（０１′十〇、’）／４だけ位相がずれる、
これｔ−ａ気的処理により第３図のごとく、受光素子８
によりＡ相が、受光素子９によりＢ相が出力され、その
位相はθ／４＝９０度で、モードルの回転数に比例した
スリット周波数の信号が得られ、モードルの回転数や、
回転位置及び回転方向を検出して機器の制御やモードル
の＃Ｉ＃に使用される。The operation of the conventional optical encoder shown in FIGS. 1, 2, 4, and 5 is as follows. For me,
The light emitting element 10t is connected to the mold shaft 1.
When rotated, the rotating slit 3 also rotates in accordance with the rotation. When the light transmitting portion 13 of the rotary slit 3 and the light transmitting portion 15 of the fixed slit 7 coincide with each other while the rotary slit 3 is rotating, the light from the light emitting element 10 is irradiated onto the light receiving elements 8 and 9. Therefore, an electrical output is generated. On the other hand, when the light shielding part 14 of the rotating slit 3 and the light shielding part of the fixed slit 7 match, the light receiving elements 8 and 9 are not irradiated with light, so that no electrical output is generated. Here, the light receiving element 8 is arranged corresponding to the left slit part in FIG. 5, and the light receiving element 9 is arranged corresponding to the right slit part, so that each electrical output is equal to the above angular pitch (01'10, ')/4 out of phase,
Through this t-a gas treatment, the light receiving element 8 is
The A phase is output by the light receiving element 9, and the B phase is output by the light receiving element 9. The phase is θ/4 = 90 degrees, and a signal with a slit frequency proportional to the rotation speed of the moder is obtained, and the rotation speed of the moder,
It detects the rotational position and rotational direction and is used to control equipment and mode #I#.
ここで従来品の問題点として、
１）最近、市場で第３図の人相、８相の位相ずれ及びジ
ッターの高精度の要求が増している。Here, the problems with the conventional products are as follows: 1) Recently, there has been an increasing demand in the market for high accuracy of the phase shift and jitter of the human phase and the 8 phases shown in Fig. 3.
２）上記１を満足させるには、２個の受光素子に等量の
光量が入るよう発光素子の光軸を調整して、２個の受光
素子の受光軸を等しい方向にする必要があり、組立調整
が困難である。2) In order to satisfy the above 1, it is necessary to adjust the optical axis of the light emitting element so that the same amount of light enters the two light receiving elements, so that the light receiving axes of the two light receiving elements are in the same direction, Difficult to assemble and adjust.
３）スリットはエツチングで行われるが、面に垂直でな
く曲が９がらり、円周上の各スリットにバラツキがあり
、光全斜めに通すとジッター大となる。3) The slits are made by etching, but the curves are not perpendicular to the surface and there are variations in each slit on the circumference, resulting in large jitters if the light is passed diagonally.
４）受光素子２１１５に対し２個の発光素子全対応させ
れば良いが、コスト高、消費成力の増大、小形化が困難
である。4) All two light-emitting elements should correspond to the light-receiving element 2115, but this increases cost, increases power consumption, and makes downsizing difficult.
等の問題があった。There were other problems.
本発明の目的は、位相ずれ、ジッターの積度向上と、組
立ｒＡ整作業性向上による低コス、ト化も計扛る光学式
エンコーダを提供するところにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an optical encoder that can reduce the cost and cost by improving the amount of phase shift and jitter, and improving the assembly rA alignment workability.
上記従来品の問題点が１個の発光素子で２個の受光素子
に投光するところにちゃ、その位置関係は第６図に示す
ように発光素子１０の″に、軸が受光面に０４の角度が
あり、受光素子８と９の受−ｆｆｉ＝４１と各々θ、と
０６の角度がある、発光素子、受光素子ともに第７図の
ような一般的な指向特性あること、スリットは、第７図
のごとく厚み方向に曲 。The problem with the conventional product mentioned above is that one light emitting element emits light onto two light receiving elements, but their positional relationship is as shown in Figure 6, with the axis at 04'' of the light emitting element 10 and the light receiving surface. The light-emitting element and the light-receiving element both have general directional characteristics as shown in Fig. 7, and the slit has the following angle: Bend in the thickness direction as shown in Figure 7.
がりがあり各スリットでばらつきがあることより′、θ
１．θ６．θ６は小さい方が汀利であることに 。′, θ due to the unevenness in each slit
1. θ6. The smaller θ6 is, the better.
層目した。It was layered.
以上、本発明の一実施例を第９図と第１０図と第１１図
で説明する。従来と同一部分は第１図による。An embodiment of the present invention will be described above with reference to FIGS. 9, 10, and 11. The same parts as the conventional one are shown in FIG.
本発明に係る光学式エンコーダは、板ばね２とハブ４に
よって固定された回転スリン）、３Ｖｉ、小ねじか圧入
等でモードルシャフト１に収付けられて □いる。回転
スリット３の上側にベース４に固定された回路基板５と
、回路基板５とベース４にて固定された補強板６ど第１
０図に示す固定スリット１７があり、回路基板５に保持
さ′ｎた受光素子８と９がある。下側には、ベース４に
保持された発光素子ＩＯがるり、上記ベース４ばねじ等
によりエンドブラケット１１に固定される構成から成っ
ており、受光索子８と９の配置の上面図を第８図に示す
。受光索子８と９は、シャフト１の中心に対して角度θ
７：４５°の関係に配置されており、その出力は心気的
処理により第３図のように受光索子８によジＡ相が、受
光素子９により８相が出力されＡ相とＢ相は、θ／４＝
９０ｉとなる出力が得られるように回転スリット３が第
３図に、固−岨スリット１７が第１０図の平面図に示す
形状になっている。The optical encoder according to the present invention is housed in a rotary shaft 1 fixed by a leaf spring 2 and a hub 4, 3Vi, and a mold shaft 1 using machine screws or press fitting. A first circuit board 5 is fixed to the base 4 above the rotating slit 3, and a reinforcing plate 6 is fixed to the circuit board 5 and the base 4.
There is a fixed slit 17 shown in FIG. 0, and there are light receiving elements 8 and 9 held on the circuit board 5. On the lower side, the light emitting element IO held by the base 4 is fixed to the end bracket 11 by the base 4 spring screw etc. Shown in Figure 8. The light receiving cables 8 and 9 are arranged at an angle θ with respect to the center of the shaft 1.
They are arranged in a 7:45° relationship, and their outputs are as shown in Figure 3 through hypochondriacal processing: the light receiving element 8 outputs the A phase, the light receiving element 9 outputs the 8 phases, and the A phase and B phase are output. The phase is θ/4=
In order to obtain an output of 90i, the rotating slit 3 is shaped as shown in FIG. 3, and the rigid slit 17 is shaped as shown in the plan view of FIG. 10.
第４図の回転スリット３は、特に光が透過する透光部１
３と、−ｆｆｉ全遮断する遮光部１４と全強調して示し
ている。この透光部１３と透光部１４との角度ピッチ全
天々θ１とθ、とし、スリットの −内径と外径を夫々
Ｒ１とＲ，とする。ここで上記透光部１３と遮光部１４
とは回転スリット３の全円周に渡って一定の角度、ピッ
チθ１ 、θ２で配列されている。The rotating slit 3 in FIG. 4 is a transparent part 1 through which light passes.
3 and the light shielding part 14 that completely blocks -ffi are shown in full emphasis. Let θ1 and θ be the angular pitches of the transparent portion 13 and the transparent portion 14, and let R1 and R be the inner and outer diameters of the slit, respectively. Here, the light transmitting part 13 and the light shielding part 14
are arranged at constant angles and pitches θ1 and θ2 over the entire circumference of the rotating slit 3.
次に第１０図に示す固定スリット１７は、特に元透部１
８と元遮元部１９金強調して示しである。Next, the fixed slit 17 shown in FIG.
8 and the original shielding part is highlighted in 19K gold.
この光透元部１８と光遮光部１９との角度ピッチを夫々
θ、〃と、θ、′とし、θ、′は、角度ピッチ（θ、′
十θ２” ） ／ ４の一係すなわちθ、′−（θ、〃
＋θ２〃）／４
なる角度ピッチとし、スリットの内径と外ｉ２受光素子
８に相対する右側部分を夫々Ｒ８とＲ２とし受光索子９
に相対する左側部分を夫々Ｒ１３’とＦＬ４’とする。Let the angular pitch between the light transmitting part 18 and the light shielding part 19 be θ, 〃 and θ,′, respectively, and θ,′ is the angular pitch (θ,′
10θ2”) / 4, i.e. θ,′−(θ,〃
The angular pitch is +θ2〃)/4, and the inner diameter of the slit and the right side facing the outer i2 light receiving element 8 are R8 and R2, respectively, and the light receiving string 9 is
The left side portions opposite to are R13' and FL4', respectively.
ここで上記透＄、１８と遮光部１９とは一定の角度ピッ
チθ、′と０２“とで煩数個で角度ピッチ０４′だけ識
れて配列され、左右の中央側の１スリツトは、斤いに干
渉しないよう右側は内面を大きく、左側は外洋金小さく
して、−ｈ記回転スリット３の角度ピッチθ１．θ２に
対し、次の関係
θ 二θ′ θ 二０２′
２
が与えらｎる。次に上記回転スリット３の内径Ｒ及びＲ
２と固定スリット７の内径Ｂ、／と外径Ｒ４との関係は
、
Ｒ１キ比、′ もしくは ｌ（、＜ＦＬ３’ＦｈキＦＬ
４ もしくは Ｒ２＞Ｒ。Here, the transparent parts 18 and the light shielding parts 19 are arranged in a number of pieces with a fixed angular pitch θ,' and 02", with an angular pitch of 04', and one slit on the left and right center side The inner surface on the right side is made larger, and the inner surface on the left side is made smaller so as not to interfere with other objects. Next, the inner diameter R and R of the rotating slit 3 are
The relationship between 2 and the inner diameter B of the fixed slit 7, / and the outer diameter R4 is as follows:
4 or R2>R.
によす、元の漏れ忙防ぐ憬に与えられている。Yes, it is given to the original leakage prevention mechanism.
以上のように構成された本４案の光学式エンコーダの６
作は、第１図、４３図、第４図でポベた従来のものと同
様であるが、受光素子８と９紫第８区の嫌に配置してお
り、断面図の第１１図で説明すると、従来の第６図と比
較して、次の関・系となっている。6 of the optical encoder of the present 4 proposals configured as above.
The structure is the same as the conventional one shown in Figures 1, 43, and 4, but the light receiving elements 8 and 9 are placed at the opposite side of the 8th section, which is explained in Figure 11, which is a cross-sectional view. Then, compared to the conventional figure 6, the following relationships and systems are obtained.
θ４〉θ４／ θ、〉θ、／ θ６〉０６′となって
Ｐ！ｌ１１従来より約１ ／ １．４になり、発光素子
と受光索子の指向特性の゛良い組合わせとなる。θ4〉θ4/ θ,〉θ, / θ6〉06' and P! 111 is approximately 1/1.4 compared to the conventional one, resulting in a good combination of directivity characteristics of the light emitting element and the light receiving element.
をらに、第１２図のごとく受光素子８と９をシャフト中
心と角度０度の位置が考えられ、固定スリット２００角
度θ、全次のように
θ、＝（θ、＋０１゜）／４
ｔ′こすると、θ１．θ５ 、θ、全θ度とすれば効果
大と考えられるが回転スリットの長さ’ｋ［来の約２倍
にする必要があり、透光部のエンチング処理時、寸法精
度を保つことが困難である。本発明の場合はスリット長
さが約１．４＠であり寸法精度を十分保てる範囲にある
。Furthermore, as shown in Fig. 12, consider the position of the light receiving elements 8 and 9 at an angle of 0 degrees with respect to the center of the shaft, and the fixed slit has a 200 angle θ, and the total angle is θ, = (θ, +01°)/4 t. 'When rubbed, θ1. θ5, θ, and the total θ degree would be considered to have a great effect, but the length of the rotating slit 'k [needs to be approximately twice as long as before, making it difficult to maintain dimensional accuracy when etching the transparent part. It is. In the case of the present invention, the slit length is about 1.4@, which is within a range where dimensional accuracy can be maintained sufficiently.
但し、回転スリット３全ガラス板への印加処理等により
製作する場曾はコスト的に若干高くなるが第１２図の場
合も十分実用性はめる。However, if the rotary slit 3 is manufactured by applying an electric current to the entire glass plate, the cost will be slightly higher, but the case shown in FIG. 12 is also sufficiently practical.
本発明によれば・、発光素子と受光素子の光軸及び受光
軸との角度を従来の１／１．４にできるので、１）２相
の位相ずれ、及びジッター會従来の少なくとも１ ／
１．４にできる。According to the present invention, since the angle between the optical axis and the light receiving axis of the light emitting element and the light receiving element can be reduced to 1/1.4 of the conventional one, 1) the phase shift between the two phases and the jitter can be reduced to at least 1/1 of the conventional one;
It can be made 1.4.
２）ｍ１１立調整が６易になり、低コスト化が可能とな
る。2) It becomes easier to adjust the m11 position, making it possible to reduce costs.
等の効果がある。There are other effects.
第１図は従来の光学式エンコーダの断面図、第２図は第
１図の一部−ヒ面図、第３図はエンコーダ出力電圧形を
示す図、第４図は回転スリットの平面図、第５図は従来
の固定スリットの平面図、第６図は従来の亀学式エンコ
ーダの断面図、第７図は発光素子、受九素子の一般的指
向特注図、第８図は回転スリットの断面拡大図、弔９図
は本発明に係る一実施例の上面図、第１０図は本発明に
旅る固定スリットの上面図、第１１図は本発明に糸る一
美施ｙｌｌの断面図、第１２図は本発明に係る他の実施
例の上囲図、第１３図に第１２図に用いられる固定スリ
ットの平面図である。
３・・・回転スリンｉ、７，１７，２０・・・固硫スリ
ツ）、８．９・・・愛元素子、１０・・・発光素子、１
３゜ｔ５；、ｔｓ、２ｔ・・・透光部、１４，１６，１
９゜２２・・・側元部。
め１ 口
８２図
８４図 第９区
躬ム口
８９０
８ｑ口
第１０図
め１１図
第１２の め１３０
２ρFig. 1 is a sectional view of a conventional optical encoder, Fig. 2 is a partial cross-sectional view of Fig. 1, Fig. 3 is a diagram showing the encoder output voltage type, and Fig. 4 is a plan view of the rotating slit. Figure 5 is a plan view of a conventional fixed slit, Figure 6 is a cross-sectional view of a conventional mechanical encoder, Figure 7 is a general orientation custom diagram of a light emitting element and receiver element, and Figure 8 is a diagram of a rotating slit. An enlarged cross-sectional view, Figure 9 is a top view of an embodiment according to the present invention, Figure 10 is a top view of the fixed slit that leads to the present invention, and Figure 11 is a cross-sectional view of the Kazumi installation yll that leads to the present invention. , FIG. 12 is a top view of another embodiment of the present invention, and FIG. 13 is a plan view of a fixed slit used in FIG. 12. 3... Rotating sulfur i, 7, 17, 20... Solid sulfur sulfur), 8.9... Love element element, 10... Light emitting element, 1
3゜t5;, ts, 2t...transparent part, 14, 16, 1
9゜22... Side part. Me 1 mouth 82 Figure 84 Figure 9 Kumu mouth 890 8q mouth Figure 10 Figure 11 Figure 12 Me 130 2ρ
Claims (1)
を備えた固定スリットと、回転スリットを回転駆動する
手段と、１１固や発光素子と２１固の受光素千金１賄え
、該回転スリットと該固定スリットのスリット部の一方
に発光素子を、自刃に回転中心と発光素子中心＋ｒ直る
線上より角変θ７が、０≦θ７く９０°の′ＩＩＩへ曲
内の直線上に受光素子の一方ｆｊ！：配置さす、且つｍ
ｌ方の受光素子ヶ前記受元素子より略１８０°の角、建
紫なす位置に配ｌｉｔきせることを特徴とする光学式エ
ンコーダ。1. A fixed slit having a transparent part that transmits the element and a unit part that does not transmit the element, a means for rotationally driving the rotating slit, a light-emitting element 11 and a light-receiving element 21; A light emitting element is placed in one of the slit parts of the rotating slit and the fixed slit, and the light is received on the straight line in the curve to 'III' where the angle change θ7 is 0≦θ7 and 90° from the line that is perpendicular to the rotation center and the light emitting element center + r. One of the elements fj! : place, and m
An optical encoder characterized in that one light-receiving element is arranged at a position approximately 180 degrees from the other light-receiving element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17975781A JPS5882117A (en) | 1981-11-11 | 1981-11-11 | Optical encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17975781A JPS5882117A (en) | 1981-11-11 | 1981-11-11 | Optical encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5882117A true JPS5882117A (en) | 1983-05-17 |
Family
ID=16071342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17975781A Pending JPS5882117A (en) | 1981-11-11 | 1981-11-11 | Optical encoder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5882117A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62135726A (en) * | 1985-12-10 | 1987-06-18 | Derufuai:Kk | Optical fiber type encoder |
| JP2021023540A (en) * | 2019-08-05 | 2021-02-22 | トーソー株式会社 | Electrically-driven switchgear |
| RU2757776C1 (en) * | 2021-05-27 | 2021-10-21 | Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий" | Lather turning method for precision parts of small diameter |
-
1981
- 1981-11-11 JP JP17975781A patent/JPS5882117A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62135726A (en) * | 1985-12-10 | 1987-06-18 | Derufuai:Kk | Optical fiber type encoder |
| JP2021023540A (en) * | 2019-08-05 | 2021-02-22 | トーソー株式会社 | Electrically-driven switchgear |
| RU2757776C1 (en) * | 2021-05-27 | 2021-10-21 | Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий" | Lather turning method for precision parts of small diameter |
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