JPH049446B2 - - Google Patents
Info
- Publication number
- JPH049446B2 JPH049446B2 JP24717584A JP24717584A JPH049446B2 JP H049446 B2 JPH049446 B2 JP H049446B2 JP 24717584 A JP24717584 A JP 24717584A JP 24717584 A JP24717584 A JP 24717584A JP H049446 B2 JPH049446 B2 JP H049446B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- slit
- guide member
- rotation angle
- annular
- 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
- 238000001514 detection method Methods 0.000 claims description 10
- 239000002184 metal Substances 0.000 description 23
- 230000002093 peripheral effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000002699 waste material 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)
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24717584A JPS61124822A (ja) | 1984-11-22 | 1984-11-22 | 回転角検出装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24717584A JPS61124822A (ja) | 1984-11-22 | 1984-11-22 | 回転角検出装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61124822A JPS61124822A (ja) | 1986-06-12 |
| JPH049446B2 true JPH049446B2 (en]) | 1992-02-20 |
Family
ID=17159552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24717584A Granted JPS61124822A (ja) | 1984-11-22 | 1984-11-22 | 回転角検出装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61124822A (en]) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5844673A (en) † | 1998-04-17 | 1998-12-01 | Cambridge Technology, Inc. | Axial led position detector for determining the angular position of a rotatable element |
| JP2004317451A (ja) * | 2003-04-21 | 2004-11-11 | Nidec Copal Corp | 角度検出装置 |
| JPWO2011114938A1 (ja) | 2010-03-15 | 2013-06-27 | オリンパス株式会社 | 光学式エンコーダ |
| CN103946675A (zh) * | 2011-12-27 | 2014-07-23 | 株式会社安川电机 | 编码器及伺服电机 |
| DE102013208649B4 (de) | 2013-05-10 | 2025-01-02 | Scanlab Gmbh | Optischer Winkeldetektor mit Strahlformungselement |
-
1984
- 1984-11-22 JP JP24717584A patent/JPS61124822A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61124822A (ja) | 1986-06-12 |
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