Optical digital spherometer based in structured light perfilometry

Valentin Sarmiento; N. Mauricio; M. Zamalloa; M. Asmad; Guillermo E. Baldwin

Optical digital spherometer based in structured light perfilometry

Valentin Sarmiento, N. Mauricio, M. Zamalloa, M. Asmad, Guillermo E. Baldwin

Pontificia Universidad Catolica del Peru

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

Abstract

In this work, it is present a spherometer based in grating projection techniques and phase evaluation. The optical setup1 consists in a projector with a Ronchi ruling and a CCD camera interfaced with an image processor. The CCD camera registers the images of the fringe-pattern as modulated by the object curvature and purposely-developed software digitally processes these images. The object profile is reconstruct using phase evaluation methods3 (PEM): Particularly, were used the Fast Fourier Transform (FFT) algorithm and phase stepping algorithms. With the resulting values and using the sagitta calculation the average radius of curvature can be evaluated in any point on the object surface © 2001 SPIE · 0277-786X/01/$15.00.

Original language	Spanish
Pages (from-to)	206-209
Number of pages	4
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4419
State	Published - 1 Jan 2001

Cite this

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title = "Optical digital spherometer based in structured light perfilometry",

abstract = "In this work, it is present a spherometer based in grating projection techniques and phase evaluation. The optical setup1 consists in a projector with a Ronchi ruling and a CCD camera interfaced with an image processor. The CCD camera registers the images of the fringe-pattern as modulated by the object curvature and purposely-developed software digitally processes these images. The object profile is reconstruct using phase evaluation methods3 (PEM): Particularly, were used the Fast Fourier Transform (FFT) algorithm and phase stepping algorithms. With the resulting values and using the sagitta calculation the average radius of curvature can be evaluated in any point on the object surface {\textcopyright} 2001 SPIE · 0277-786X/01/$15.00.",

author = "Valentin Sarmiento and N. Mauricio and M. Zamalloa and M. Asmad and Baldwin, {Guillermo E.}",

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AU - Sarmiento, Valentin

AU - Mauricio, N.

AU - Zamalloa, M.

AU - Asmad, M.

AU - Baldwin, Guillermo E.

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N2 - In this work, it is present a spherometer based in grating projection techniques and phase evaluation. The optical setup1 consists in a projector with a Ronchi ruling and a CCD camera interfaced with an image processor. The CCD camera registers the images of the fringe-pattern as modulated by the object curvature and purposely-developed software digitally processes these images. The object profile is reconstruct using phase evaluation methods3 (PEM): Particularly, were used the Fast Fourier Transform (FFT) algorithm and phase stepping algorithms. With the resulting values and using the sagitta calculation the average radius of curvature can be evaluated in any point on the object surface © 2001 SPIE · 0277-786X/01/$15.00.

AB - In this work, it is present a spherometer based in grating projection techniques and phase evaluation. The optical setup1 consists in a projector with a Ronchi ruling and a CCD camera interfaced with an image processor. The CCD camera registers the images of the fringe-pattern as modulated by the object curvature and purposely-developed software digitally processes these images. The object profile is reconstruct using phase evaluation methods3 (PEM): Particularly, were used the Fast Fourier Transform (FFT) algorithm and phase stepping algorithms. With the resulting values and using the sagitta calculation the average radius of curvature can be evaluated in any point on the object surface © 2001 SPIE · 0277-786X/01/$15.00.

M3 - Artículo

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JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

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