JPS55126805A - Measuring instrument for turning angle of rotary axis - Google Patents
Measuring instrument for turning angle of rotary axisInfo
- Publication number
- JPS55126805A JPS55126805A JP3395679A JP3395679A JPS55126805A JP S55126805 A JPS55126805 A JP S55126805A JP 3395679 A JP3395679 A JP 3395679A JP 3395679 A JP3395679 A JP 3395679A JP S55126805 A JPS55126805 A JP S55126805A
- Authority
- JP
- Japan
- Prior art keywords
- photo
- precision
- slit
- rise
- fall
- 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
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
Abstract
PURPOSE: To improve reliability and measurement precision both by generating angle signals of even intervals corresponding to the rise and fall of a photo-detection signal, by providing slits at an interval ratio of 1:1 on the entire circumference centering on a rotation axis.
CONSTITUTION: Light emitting diode 3 and photo diode 5 are provided which oppose to each other with rotary disk 2, fixed to a rotation axis, between. Rotary disk 2 is provided with slits at the entire circumference and the interval ratio of slit 1 to the adjacent is 1:1. An emitter current flowing through photo detection is amplified by operational amplifier 6 and applied to differentiating circuit 8 in parallel to a signal inverted by inverter 7, thereby outputting the rise and fall of it through OR circuit 10. Thus, the width and interval of slit 1 can be widened to take a measurement with high precision. Additionally, the precision can be improved by an electric adjustment.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3395679A JPS55126805A (en) | 1979-03-23 | 1979-03-23 | Measuring instrument for turning angle of rotary axis |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3395679A JPS55126805A (en) | 1979-03-23 | 1979-03-23 | Measuring instrument for turning angle of rotary axis |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55126805A true JPS55126805A (en) | 1980-10-01 |
Family
ID=12400934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3395679A Pending JPS55126805A (en) | 1979-03-23 | 1979-03-23 | Measuring instrument for turning angle of rotary axis |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55126805A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103486981A (en) * | 2013-09-18 | 2014-01-01 | 浙江工业大学 | High-precision angle testing device in thermal vacuum environment |
-
1979
- 1979-03-23 JP JP3395679A patent/JPS55126805A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103486981A (en) * | 2013-09-18 | 2014-01-01 | 浙江工业大学 | High-precision angle testing device in thermal vacuum environment |
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