ES2154574A1 - Optic ruler for measuring lengths, with gradation for compensation - Google Patents
Optic ruler for measuring lengths, with gradation for compensationInfo
- Publication number
- ES2154574A1 ES2154574A1 ES009802370A ES9802370A ES2154574A1 ES 2154574 A1 ES2154574 A1 ES 2154574A1 ES 009802370 A ES009802370 A ES 009802370A ES 9802370 A ES9802370 A ES 9802370A ES 2154574 A1 ES2154574 A1 ES 2154574A1
- Authority
- ES
- Spain
- Prior art keywords
- gradation
- compensation
- gradations
- measuring lengths
- ruler
- 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
Landscapes
- Optical Transform (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Optic ruler for measuring lengths, with gradation for compensation.The optic ruler for measuring lengths has a gradation for compensation of the parallelism deviations between the period "p" scale gradation (3), and at least two cursor (4) gradations (A, B) of the reader head, whose sections have a width of p/2 for modulating the Moire light intensity (I) obtaining two analogue signals (SA, SB) in a grid. A refined measuring resolution is obtained in comparison to the period "p" and to the one obtained by the combination of the two sine signals (SA, SB), by gradations (A1, A2, B1, B2) of the cursor with a pitch (6) angle (6), and by gradations with a double formation of sections (A1, A2, B1, B2) with counterlaid pitches (6).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9802370A ES2154574B1 (en) | 1998-11-12 | 1998-11-12 | OPTICAL RULE FOR THE MEASUREMENT OF LENGTHS, WITH A GRADUATION FOR COMPENSATION. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9802370A ES2154574B1 (en) | 1998-11-12 | 1998-11-12 | OPTICAL RULE FOR THE MEASUREMENT OF LENGTHS, WITH A GRADUATION FOR COMPENSATION. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2154574A1 true ES2154574A1 (en) | 2001-04-01 |
ES2154574B1 ES2154574B1 (en) | 2001-10-16 |
Family
ID=8305758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES9802370A Expired - Lifetime ES2154574B1 (en) | 1998-11-12 | 1998-11-12 | OPTICAL RULE FOR THE MEASUREMENT OF LENGTHS, WITH A GRADUATION FOR COMPENSATION. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2154574B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006035447A2 (en) * | 2004-09-29 | 2006-04-06 | Nanomotion Ltd. | Platform transport systems |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3427463A (en) * | 1965-05-28 | 1969-02-11 | Zeiss Stiftung | Displacement measuring device using gratings having slits at specified spacings and at specified angle to eliminate harmonics |
US5497226A (en) * | 1994-08-22 | 1996-03-05 | Polaroid Corporation | Quadrature diffractive encoder |
US5686995A (en) * | 1993-09-30 | 1997-11-11 | Dataliner Ab | Scale pattern arrangement |
-
1998
- 1998-11-12 ES ES9802370A patent/ES2154574B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3427463A (en) * | 1965-05-28 | 1969-02-11 | Zeiss Stiftung | Displacement measuring device using gratings having slits at specified spacings and at specified angle to eliminate harmonics |
US5686995A (en) * | 1993-09-30 | 1997-11-11 | Dataliner Ab | Scale pattern arrangement |
US5497226A (en) * | 1994-08-22 | 1996-03-05 | Polaroid Corporation | Quadrature diffractive encoder |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006035447A2 (en) * | 2004-09-29 | 2006-04-06 | Nanomotion Ltd. | Platform transport systems |
WO2006035447A3 (en) * | 2004-09-29 | 2006-06-22 | Nanomotion Ltd | Platform transport systems |
US7876509B2 (en) | 2004-09-29 | 2011-01-25 | Alon Avital | Platform transport systems |
Also Published As
Publication number | Publication date |
---|---|
ES2154574B1 (en) | 2001-10-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EC2A | Search report published |
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