Parameter determination of biconvex lenses using confocal imaging

Vani K. Chhaniwal; Arun Anand

doi:10.1117/12.827470

17 June 2009 Parameter determination of biconvex lenses using confocal imaging

Vani K. Chhaniwal, Arun Anand

Proceedings Volume 7389, Optical Measurement Systems for Industrial Inspection VI; 738911 (2009) https://doi.org/10.1117/12.827470
Event: SPIE Europe Optical Metrology, 2009, Munich, Germany

Abstract

Determination of parameters of the lens like the focal length, radius of curvature and refractive index are important from its application point of view. Many interferometric as well as non interferometric methods exist for this. But most of these methods require a visual inspection of the resulting interference pattern. Confocal imaging has very high axial resolution and it permits three-dimensional observation of object. This same property also enables one to determine the axial position of a specularly reflecting object. Here this capability has been applied, in reflection case, to the determination of lens parameters. This method is explained with simulation using diffraction theory and experimental results.

Citation Download Citation

Vani K. Chhaniwal and Arun Anand "Parameter determination of biconvex lenses using confocal imaging", Proc. SPIE 7389, Optical Measurement Systems for Industrial Inspection VI, 738911 (17 June 2009); https://doi.org/10.1117/12.827470

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