Absolute Sphericity Measurement: a Comparative Study on the Use of Interferometry and a Shack-Hartmann Sensor

Pfund, Johannes; Lindlein, Norbert; Schwider, Johannes; Burow, R.; Blümel, Th.; Elssner, Karl-Edmund

doi:10.1109/cleoe.1998.1115498

Cited by 15 publications

(14 citation statements)

References 1 publication

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“…For our cylindrical lens, these parameters were measured with a Shack-Hartmann wavefront sensor (Thorlabs, WFS series) [21][22][23][24]. Based on the results, our device showed modest aberrations since the measured aberrations (i.e., coma, tilt, spherical aberration, astigmatism) were modest and comparable to those measured from the same commercial refractive lens described above, as shown in Table 1.…”

Section: Resultsmentioning

confidence: 99%

Bio-Inspired Wide-Angle Broad-Spectrum Cylindrical Lens Based on Reflections from Micro-Mirror Array on a Cylindrical Elastomeric Membrane

Huang

Jiang

2014

Micromachines

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Abstract:We present a wide-angle, broad-spectrum cylindrical lens based on reflections from an array of three-dimensional, high-aspect-ratio micro-mirrors fabricated on a cylindrical elastomeric substrate, functionally inspired by natural reflecting superposition compound eyes. Our device can perform one-dimensional focusing and beam-shaping comparable to conventional refraction-based cylindrical lenses, while avoiding chromatic aberration. The focal length of our cylindrical lens is 1.035 mm, suitable for micro-optical systems. Moreover, it demonstrates a wide field of view of 152° without distortion, as well as modest spherical aberrations. Our work could be applied to diverse applications including laser diode collimation, barcode scanning, holography, digital projection display, microlens arrays, and optical microscopy.

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Section: Resultsmentioning

confidence: 99%

Bio-Inspired Wide-Angle Broad-Spectrum Cylindrical Lens Based on Reflections from Micro-Mirror Array on a Cylindrical Elastomeric Membrane

Huang

Jiang

2014

Micromachines

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“…그 리고 파면의 기울기를 측정하는 방법으로는 편향법 및 shear interferometry 방법 등이 있다. 편향법으로 잘 알려진 방법은 모아레, 론치 와 Shark-Hartmann 방법이 있다 [4][5][6][7][8][9] . 편향법은 일반적으로 외부 환경에 덜 민감 하다는 장점이 있고 시료의 크기가 커도 측정에 어려움이 덜한 장점이 있다.…”

Section: 서 론unclassified

A Study of Three-Dimensional Measurement By Transmission Deflectometry and Hilbert Transform

Na¹,

2016

Korean Journal of Optics and Photonics

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We used transmission deflectometry to measure the three-dimensional shapes of optical components, and we used the Hilbert transform to retrieve the phases from measured deformed fringe images. Deflectometry is useful for measuring large-scale samples, and specular samples. We have retrieved the phases from deformed fringe images and Hilbert-transformed images, and have used the least-squares method to find the height information. We have verified that phase retrieval using Hilbert transform is useful by computer simulation and experiment.

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“…그리고 파면의 기울기를 측정하는 방법으로는 편향법(deflectometry) 및 층밀리기 간섭 계 (shearing interferometry) 방법 등이 있다. 편향법으로 잘 알려진 방법은 론치 와 Shack-Hartmann 방법이 있다 [4][5][6][7][8][9][10][11] . 편 향법은 일반적으로 외부 환경에 덜 민감 하다는 장점이 있고 시료의 크기가 커도 측정에 어려움이 덜한 장점이 있다.…”

Section: Fig 1 Schematic Diagram Of Transmission Deflectometryunclassified

Simultaneous Determination of Both Surface Profiles of a Bifocal Lens Using Dual-Wavelength Transmission Deflectometry With Liquid

Shin¹,

Yu²

2015

Korean Journal of Optics and Photonics

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We propose a method for simultaneously measuring the front and back surface profiles of transparent optical components. The proposed method combines dual-wavelength transmission deflectometry with liquids to record distorted phases at different wavelengths, and then numerically reconstructs the three-dimensional phase information to image the front and back surfaces of the lens. We propose a theoretical model to determine the surface information, and a bifocal lens is experimentally investigated. Unlike conventional transmission deflectometry, our proposed method supports direct observation of the front and back surface profiles of the optical elements.

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Absolute Sphericity Measurement: a Comparative Study on the Use of Interferometry and a Shack-Hartmann Sensor

Cited by 15 publications

References 1 publication

Bio-Inspired Wide-Angle Broad-Spectrum Cylindrical Lens Based on Reflections from Micro-Mirror Array on a Cylindrical Elastomeric Membrane

Bio-Inspired Wide-Angle Broad-Spectrum Cylindrical Lens Based on Reflections from Micro-Mirror Array on a Cylindrical Elastomeric Membrane

A Study of Three-Dimensional Measurement By Transmission Deflectometry and Hilbert Transform

Simultaneous Determination of Both Surface Profiles of a Bifocal Lens Using Dual-Wavelength Transmission Deflectometry With Liquid

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