Autocollimation-Based Roll Angle Sensor Using a Modified Right-Angle Prism for Large Range Measurements.

Yan Guo, Yu Zhang, Jiali Ji, Huige Di, Qing Yan, Li Wang, Dengxin Hua

Abstract read

In one paragraph

Article in Sensors (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed

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1 citing paper in PubMed.

Influence of Lens Systematic Errors on Autocollimator Angle Measurement: Theoretical and Experimental Explanations.Sensors (Basel, Switzerland) · 2025
Article

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5 · Who and what money

Authors and funding

7 authors.

Yan GuoSchool of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, China.

Yu ZhangSchool of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, China.

Jiali JiSchool of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, China.

Huige DiSchool of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, China.

Qing YanSchool of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, China.

Li WangSchool of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, China.

Dengxin HuaSchool of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, China.

Funding

Natural Science Basic Research Program of Shaanxi Province 2024JC-YBQN-0705Shaanxi Province Postdoctoral Science Foundation 2023BSHEDZZ251

6 · The paper itself

Abstract

An autocollimator is a popular angle measuring apparatus which lacks the capability to measure the roll angle. This paper proposes a novel roll angle sensor with a large measuring range that is based on the autocollimation principle. A modified right-angle prism (MRP) functions as a reflector to admit a collimated beam and return two outgoing beams to the sensor head. The roll angle of the MRP can be attained by analyzing the moving tracks of the two light spots focused on a photodetector. The mathematical model is derived in detail, and the experimental results show that the measuring accuracy of the proposed sensor is ±13.85 arcsec over a range of 360°. These results verify the feasibility of the proposed sensor for roll angle measurements that require a large measuring range.

Indexed as

autocollimationlarge range measurementsright-angle prismroll angle

Identifiers

PMID40006479

DOI10.3390/s25041250

PMCPMC11860732

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