JPS5582918A - Encoder - Google Patents
EncoderInfo
- Publication number
- JPS5582918A JPS5582918A JP15581478A JP15581478A JPS5582918A JP S5582918 A JPS5582918 A JP S5582918A JP 15581478 A JP15581478 A JP 15581478A JP 15581478 A JP15581478 A JP 15581478A JP S5582918 A JPS5582918 A JP S5582918A
- Authority
- JP
- Japan
- Prior art keywords
- code plate
- linear sensor
- slits
- length
- plate
- 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.)
- Granted
Links
Abstract
PURPOSE: To enable high-accuracy insertion in the width of the slits of a code plate for the lattice pattern of an encoder, by setting a vernier relation between the code plate and sensor elements arrayed along the lattice pattern.
CONSTITUTION: An optical lattice code plate 1, which is provided with N transparent and opaque slits having a length of W and periodically arranged in the total length L of the plate, and a linear sensor 2 having a length of L and made of (N+ 1) photoelectric converters arranged in a spacing of P equal to W.N/(N+1) are juxtaposed with each other. The spacing of the slits of the code plate 1 is made different from that of the photoelectric converters of the linear sensor 2 so that a vernier relation is set between them. Rays of light transmitted through the code plate 1 are received by the linear sensor 2. An electric signal proportional to the quantity of the received light is picked out by clock pulses. The phase inversion point of the electric signal is detected to determine the relative displacement between the code plate 1 and the linear sensor 2.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15581478A JPS5582918A (en) | 1978-12-19 | 1978-12-19 | Encoder |
DE7979302233T DE2967525D1 (en) | 1978-12-19 | 1979-10-16 | Encoder for length or angle measuring devices with high accuracy |
EP79302233A EP0013799B1 (en) | 1978-12-19 | 1979-10-16 | Encoder for length or angle measuring devices with high accuracy |
US06/626,608 US4529964A (en) | 1978-12-19 | 1984-07-06 | Encoder for length or angle measuring device with high accuracy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15581478A JPS5582918A (en) | 1978-12-19 | 1978-12-19 | Encoder |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11305884A Division JPS6076611A (en) | 1984-06-04 | 1984-06-04 | Encoder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5582918A true JPS5582918A (en) | 1980-06-23 |
JPH0143243B2 JPH0143243B2 (en) | 1989-09-19 |
Family
ID=15614049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15581478A Granted JPS5582918A (en) | 1978-12-19 | 1978-12-19 | Encoder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5582918A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56141513A (en) * | 1980-04-04 | 1981-11-05 | Toshiba Corp | Encoder |
JPS57104815A (en) * | 1980-12-20 | 1982-06-30 | Asahi Optical Co Ltd | Angle measuring apparatus employing line sensor |
JPS57116214A (en) * | 1981-01-12 | 1982-07-20 | Asahi Optical Co Ltd | Angle-measuring device by use of circular photosensor array |
JPS5952706A (en) * | 1982-09-20 | 1984-03-27 | Shimadzu Corp | Displacement measuring method |
JPS6045340A (en) * | 1983-08-22 | 1985-03-11 | 株式会社東芝 | Graticule sensor |
JPS6438521U (en) * | 1987-09-02 | 1989-03-08 |
-
1978
- 1978-12-19 JP JP15581478A patent/JPS5582918A/en active Granted
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56141513A (en) * | 1980-04-04 | 1981-11-05 | Toshiba Corp | Encoder |
JPS6310768B2 (en) * | 1980-04-04 | 1988-03-09 | Toshiba Kk | |
JPS57104815A (en) * | 1980-12-20 | 1982-06-30 | Asahi Optical Co Ltd | Angle measuring apparatus employing line sensor |
JPS57116214A (en) * | 1981-01-12 | 1982-07-20 | Asahi Optical Co Ltd | Angle-measuring device by use of circular photosensor array |
JPS5952706A (en) * | 1982-09-20 | 1984-03-27 | Shimadzu Corp | Displacement measuring method |
JPS6045340A (en) * | 1983-08-22 | 1985-03-11 | 株式会社東芝 | Graticule sensor |
JPH0254091B2 (en) * | 1983-08-22 | 1990-11-20 | Tokyo Shibaura Electric Co | |
JPS6438521U (en) * | 1987-09-02 | 1989-03-08 |
Also Published As
Publication number | Publication date |
---|---|
JPH0143243B2 (en) | 1989-09-19 |
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