ES2154574A1 - Optic ruler for measuring lengths, with gradation for compensation - Google Patents

Optic ruler for measuring lengths, with gradation for compensation

Info

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
Application number
ES009802370A
Other languages
Spanish (es)
Other versions
ES2154574B1 (en
Inventor
Calvo Tomas Morlanes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fagor Electrodomesticos SCL
Original Assignee
Fagor Electrodomesticos SCL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fagor Electrodomesticos SCL filed Critical Fagor Electrodomesticos SCL
Priority to ES9802370A priority Critical patent/ES2154574B1/en
Publication of ES2154574A1 publication Critical patent/ES2154574A1/en
Application granted granted Critical
Publication of ES2154574B1 publication Critical patent/ES2154574B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • 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).
ES9802370A 1998-11-12 1998-11-12 OPTICAL RULE FOR THE MEASUREMENT OF LENGTHS, WITH A GRADUATION FOR COMPENSATION. Expired - Lifetime ES2154574B1 (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006035447A2 (en) * 2004-09-29 2006-04-06 Nanomotion Ltd. Platform transport systems

Citations (3)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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