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Design of a 3D printed compact interferometric system and required phone application for small angular measurements
1Applied Photonics and Nanophotonics Laboratory, Department of Physics, Tezpur University, Nappam 78402, India.
The Review of Scientific Instruments
|November 8, 2018
Summary
This study introduces a 3D printed smartphone system for optical interferometry, enabling precise measurement of small angular rotations. The integrated mobile application handles all data analysis, making it a portable metrology tool.
Area of Science:
- Optical Metrology
- 3D Printing Technology
- Mobile Sensing
Background:
- Optical interferometry traditionally requires specialized equipment.
- Integrating advanced sensing capabilities into mobile devices is an emerging field.
- 3D printing offers rapid prototyping for custom optical setups.
Purpose of the Study:
- To demonstrate the feasibility of a 3D printed smartphone-based interferometric system.
- To develop an onboard fringe processing application for angular rotation measurement.
- To establish the system's accuracy and portability for optical metrology.
Main Methods:
- Designed and 3D printed a smartphone-based interferometric setup.
- Utilized the smartphone camera to capture interference fringes.
- Developed a custom Android application for fringe analysis and angular computation.
- Measured angular variations by analyzing changes in optical path difference (OPD).
Main Results:
- Successfully measured small angular rotations with a minimum detectable angle of 0.02°.
- Achieved a reliable dynamic range of -3.68° to 3.68° for angular measurements.
- Validated the smartphone application's capability for onboard fringe processing and data analysis.
Conclusions:
- A 3D printed smartphone interferometric system is a viable tool for optical metrology.
- The system offers high accuracy and portability for field measurements.
- Modern smartphones and 3D printing enable accessible optical sensing solutions.
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