JPS55109912A - Length measuring instrument - Google Patents
Length measuring instrumentInfo
- Publication number
- JPS55109912A JPS55109912A JP1767579A JP1767579A JPS55109912A JP S55109912 A JPS55109912 A JP S55109912A JP 1767579 A JP1767579 A JP 1767579A JP 1767579 A JP1767579 A JP 1767579A JP S55109912 A JPS55109912 A JP S55109912A
- Authority
- JP
- Japan
- Prior art keywords
- scale
- vibrator
- vibration
- uneven
- opposing
- 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 detect an uneven scale with high precision by making a vibrator, provided opposing to the uneven scale at a fine interval, resonate at a high frequency and then by varying the resonance frequency of the vibrator under an influenece of a reflected wave, etc., at an even part after moving this vibrating vibrator in parallel along the uneven scale.
CONSTITUTION: Scale 1 is provided with concave grooves 1a at fixed intervals of a scale. Vibrator 2 of a crystal, etc., provided opposing the scale 1 at a fine interval, moves in parallel while keeping the opposing interval constant. Here, high-frequency oscillator 3 exciting vibrator 2 and detector 4 detecting variation of vibration are arranged. Through the oscillation of oscillator 3, vibrator 2 is excited to vibrate and its vibration propagates to the surface of scale 1, but the propagation state of a reflected wave changes where vibrator 2 opposes to concave groove 1a, varying the resonance frequency of vibtator 2. Therefore, the position of the scale can be discriminated with high precision by detecting and judging this variation of vibration by detector 4.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1767579A JPS55109912A (en) | 1979-02-17 | 1979-02-17 | Length measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1767579A JPS55109912A (en) | 1979-02-17 | 1979-02-17 | Length measuring instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55109912A true JPS55109912A (en) | 1980-08-23 |
| JPS6116005B2 JPS6116005B2 (en) | 1986-04-26 |
Family
ID=11950421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1767579A Granted JPS55109912A (en) | 1979-02-17 | 1979-02-17 | Length measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55109912A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5784411U (en) * | 1980-11-12 | 1982-05-25 | ||
| JP2003512680A (en) * | 1999-10-19 | 2003-04-02 | メランゾ テルジェ | Method for hidden coding of objects and reading method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH077505U (en) * | 1993-07-12 | 1995-02-03 | シュアラスター株式会社 | Anti-slip device for shoes |
-
1979
- 1979-02-17 JP JP1767579A patent/JPS55109912A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5784411U (en) * | 1980-11-12 | 1982-05-25 | ||
| JP2003512680A (en) * | 1999-10-19 | 2003-04-02 | メランゾ テルジェ | Method for hidden coding of objects and reading method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6116005B2 (en) | 1986-04-26 |
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