Interferometric 2D small angle generator for autocollimator calibration

Ville Heikkinen; Ville Byman; Ilkka Palosuo; Björn Hemming; Antti Lassila

doi:10.1088/1681-7575/aa648d

Interferometric 2D small angle generator for autocollimator calibration

Ville Heikkinen (Corresponding Author), Ville Byman, Ilkka Palosuo, Björn Hemming, Antti Lassila

Research output: Contribution to journal › Article › Scientific › peer-review

5 Citations (Scopus)

Abstract

Small angle generators are simple devices for providing small angles traceable to the definition of the SI-unit radian. The most accurate ones use a laser interferometer for measurement of angular displacement. Small angle generators used for autocollimator calibration usually create angles around a single axis. A two-directional angle generator would be preferable, as it could more efficiently reveal artefacts related to angular displacement across both axes, such as orthogonality of the autocollimator's measuring axes. Characterizing errors depending on one axis only would also be easier, as the setup needs to be aligned only once for studying both axes of the autocollimator. We describe a novel interferometric two-directional small angle generator which we have built and tested for autocollimator calibration. The range is ±1000'' for both axes. The estimated standard uncertainty for full range is 0.0036'' for the horizontal and 0.0053'' for the vertical direction.

Original language	English
Pages (from-to)	253-261
Number of pages	9
Journal	Metrologia
Volume	54
Issue number	3
DOIs	https://doi.org/10.1088/1681-7575/aa648d
Publication status	Published - 2017
MoE publication type	A1 Journal article-refereed

Fingerprint

Calibration

Interferometers

Lasers

Uncertainty

Keywords

angle measurement
autocollimator
interferometry
metrology

Cite this

Heikkinen, V., Byman, V., Palosuo, I., Hemming, B., & Lassila, A. (2017). Interferometric 2D small angle generator for autocollimator calibration. Metrologia, 54(3), 253-261. https://doi.org/10.1088/1681-7575/aa648d

Heikkinen, Ville ; Byman, Ville ; Palosuo, Ilkka ; Hemming, Björn ; Lassila, Antti. / Interferometric 2D small angle generator for autocollimator calibration. In: Metrologia. 2017 ; Vol. 54, No. 3. pp. 253-261.

@article{6b0cb17f7f74466bb77166953e8fd6ec,

title = "Interferometric 2D small angle generator for autocollimator calibration",

abstract = "Small angle generators are simple devices for providing small angles traceable to the definition of the SI-unit radian. The most accurate ones use a laser interferometer for measurement of angular displacement. Small angle generators used for autocollimator calibration usually create angles around a single axis. A two-directional angle generator would be preferable, as it could more efficiently reveal artefacts related to angular displacement across both axes, such as orthogonality of the autocollimator's measuring axes. Characterizing errors depending on one axis only would also be easier, as the setup needs to be aligned only once for studying both axes of the autocollimator. We describe a novel interferometric two-directional small angle generator which we have built and tested for autocollimator calibration. The range is ±1000'' for both axes. The estimated standard uncertainty for full range is 0.0036'' for the horizontal and 0.0053'' for the vertical direction.",

keywords = "angle measurement, autocollimator, interferometry, metrology",

author = "Ville Heikkinen and Ville Byman and Ilkka Palosuo and Bj{\"o}rn Hemming and Antti Lassila",

year = "2017",

doi = "10.1088/1681-7575/aa648d",

language = "English",

volume = "54",

pages = "253--261",

journal = "Metrologia",

issn = "0026-1394",

publisher = "Institute of Physics IOP",

number = "3",

}

Heikkinen, V , Byman, V , Palosuo, I , Hemming, B & Lassila, A 2017, 'Interferometric 2D small angle generator for autocollimator calibration', Metrologia, vol. 54, no. 3, pp. 253-261. https://doi.org/10.1088/1681-7575/aa648d

Interferometric 2D small angle generator for autocollimator calibration. / Heikkinen, Ville (Corresponding Author); Byman, Ville ; Palosuo, Ilkka ; Hemming, Björn ; Lassila, Antti.

In: Metrologia, Vol. 54, No. 3, 2017, p. 253-261.

Research output: Contribution to journal › Article › Scientific › peer-review

TY - JOUR

T1 - Interferometric 2D small angle generator for autocollimator calibration

AU - Heikkinen, Ville

AU - Byman, Ville

AU - Palosuo, Ilkka

AU - Hemming, Björn

AU - Lassila, Antti

PY - 2017

Y1 - 2017

N2 - Small angle generators are simple devices for providing small angles traceable to the definition of the SI-unit radian. The most accurate ones use a laser interferometer for measurement of angular displacement. Small angle generators used for autocollimator calibration usually create angles around a single axis. A two-directional angle generator would be preferable, as it could more efficiently reveal artefacts related to angular displacement across both axes, such as orthogonality of the autocollimator's measuring axes. Characterizing errors depending on one axis only would also be easier, as the setup needs to be aligned only once for studying both axes of the autocollimator. We describe a novel interferometric two-directional small angle generator which we have built and tested for autocollimator calibration. The range is ±1000'' for both axes. The estimated standard uncertainty for full range is 0.0036'' for the horizontal and 0.0053'' for the vertical direction.

AB - Small angle generators are simple devices for providing small angles traceable to the definition of the SI-unit radian. The most accurate ones use a laser interferometer for measurement of angular displacement. Small angle generators used for autocollimator calibration usually create angles around a single axis. A two-directional angle generator would be preferable, as it could more efficiently reveal artefacts related to angular displacement across both axes, such as orthogonality of the autocollimator's measuring axes. Characterizing errors depending on one axis only would also be easier, as the setup needs to be aligned only once for studying both axes of the autocollimator. We describe a novel interferometric two-directional small angle generator which we have built and tested for autocollimator calibration. The range is ±1000'' for both axes. The estimated standard uncertainty for full range is 0.0036'' for the horizontal and 0.0053'' for the vertical direction.

KW - angle measurement

KW - autocollimator

KW - interferometry

KW - metrology

UR - http://www.scopus.com/inward/record.url?scp=85020881955&partnerID=8YFLogxK

U2 - 10.1088/1681-7575/aa648d

DO - 10.1088/1681-7575/aa648d

M3 - Article

VL - 54

SP - 253

EP - 261

JO - Metrologia