Prof. Ole Johan Lokberg Profile

Prof. Ole Johan Lokberg

Researcher at Norwegian Univ of Science and Technology

SPIE Involvement:

Author

Publications (19)

Proceedings Article | 2 October 2003 Paper

Polarization-sensitive dual-wavelength spectroscopic optical coherence tomography

Tore Lindmo, Arne Royset, Trude Storen, Ole Lokberg

Proceedings Volume 5140, (2003) https://doi.org/10.1117/12.500995

KEYWORDS: Polarization, Optical coherence tomography, Birefringence, Signal attenuation, Spectroscopy, Optical spectroscopy, Absorption, Imaging systems, Retina, Multiplexing

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Proceedings Article | 8 July 2003 Paper

Time-resolved spectroscopic optical coherence tomography for diffusion measurements

Trude Storen, Tore Lindmo, Annette Simonsen, Ole Lokberg, Arne Royset, Lars Svaasand

Proceedings Volume 4956, (2003) https://doi.org/10.1117/12.477645

KEYWORDS: Optical coherence tomography, Diffusion, Signal attenuation, Scattering, Spectroscopy, Absorption, Tissue optics, Optical spectroscopy, Tissues, Interferometers

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Proceedings Article | 23 May 2001 Paper

Multiple-depth probing by wavelength-multiplexed low-coherence interferometry

Lars Svaasand, Ole Lokberg, Daniel Oestling, Arne Royset, Tore Lindmo, Trude Storen

Proceedings Volume 4251, (2001) https://doi.org/10.1117/12.427873

KEYWORDS: Interferometers, Multiplexing, Doppler effect, Optical coherence tomography, Interferometry, Blood circulation, Imaging systems, Coherence (optics), Sensors, Speckle

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Proceedings Article | 12 February 1999 Paper

Absorption measurements using low-coherence interferometry

Tore Lindmo, Trude Storen, Lars Svaasand, Dan Ostling, Ole Lokberg

Proceedings Volume 3567, (1999) https://doi.org/10.1117/12.339178

KEYWORDS: Absorption, Scattering, Signal attenuation, Mirrors, Interferometry, Light scattering, Blood, Oxygen, Retina, Interferometers

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Proceedings Article | 6 July 1998 Paper

Large-amplitude point vibration measurement with optical fiber moire-based technique

Toshihiko Yoshino, Jesus Valera, Pranay Sinha, Ole Lokberg

Proceedings Volume 3479, (1998) https://doi.org/10.1117/12.316467

KEYWORDS: Ronchi rulings, Servomechanisms, Signal detection, Modulators, Optical fibers, Ferroelectric materials, Vibrometry, Phase shift keying, Moire patterns, Directional couplers

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Proceedings Article | 18 June 1998 Paper

Large-amplitude point-vibration measurement with an optical fibre moire-based technique

Toshihiko Yoshino, Ole Lokberg, Jesus Valera, Pranay Sinha

Proceedings Volume 3483, (1998) https://doi.org/10.1117/12.309643

KEYWORDS: Ronchi rulings, Servomechanisms, Optical fibers, Signal detection, Optical testing, Sensors, Modulators, Directional couplers, Measurement devices, Diffraction

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Proceedings Article | 17 September 1997 Paper

Recent vibration analysis results at NTNU with video speckle interferometry

Jesus Valera, Ole Lokberg

Proceedings Volume 3098, (1997) https://doi.org/10.1117/12.281154

KEYWORDS: Fringe analysis, Vibrometry, Composites, Video, Speckle, Interferometry, CCD cameras, Polarization, Speckle interferometry, Speckle pattern

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Proceedings Article | 20 March 1997 Paper

Vibration analysis using linearized fringe analysis and video speckle techniques

Rolf Rustad, Jesus Valera, Ole Lokberg

Proceedings Volume 2921, (1997) https://doi.org/10.1117/12.269831

KEYWORDS: Video, Vibrometry, Fringe analysis, Speckle, Phase shift keying, Interferometry, Phase modulation, Transducers, Modulation, Mirrors

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Proceedings Article | 18 September 1996 Paper

Full field tomographic reconstruction of acoustic fields using TV holography: theory, developments, and possibilities

Rolf Rustad, Trude Stoeren, Kristin Klepsvik, Ole Lokberg, Hans Pedersen

Proceedings Volume 2782, (1996) https://doi.org/10.1117/12.250757

KEYWORDS: Acoustics, Holography, Tomography, Refractive index, Interferometers, Water

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Proceedings Article | 23 June 1995 Paper

Volume reconstruction of sound fields using TV holography

Ole Lokberg

Proceedings Volume 2545, (1995) https://doi.org/10.1117/12.212660

KEYWORDS: Tomography, Refractive index, Phase shift keying, Beam splitters, Phase measurement, Phase modulation, Holography, Atmospheric optics, Image filtering, Signal processing

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Proceedings Article | 13 September 1994 Paper

Monitoring vibration of sandwich plates and delamination detection with fibre optic sensors

Fridtjov Irgens, Ole Lokberg, Helge Storoey, Gunnar Wang, Alf Jensen

Proceedings Volume 2361, (1994) https://doi.org/10.1117/12.184810

KEYWORDS: Sensors, Fiber optics sensors, Skin, Polarimetry, Smart materials, Mathematical modeling, Fiber optics, Signal detection, Defense and security, Electronics

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Proceedings Article | 8 September 1994 Paper

Reconstruction of sound fields using TV holography

Ole Lokberg, Morten Espeland, Rolf Rustad

Proceedings Volume 2358, (1994) https://doi.org/10.1117/12.185310

KEYWORDS: Holography, Refractive index, Interferometry

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Proceedings Article | 1 March 1992 Paper

Speckles and speckle techniques for biomedical applications

Ole Lokberg

Proceedings Volume 1524, (1992) https://doi.org/10.1117/12.57725

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Proceedings Article | 1 January 1992 Paper

TV holography used in the study of failure of rocks and concrete

Jan Malmo, Eiolf Vikhagen, Ole Lokberg

Proceedings Volume 1553, (1992) https://doi.org/10.1117/12.135320

KEYWORDS: Holography, Video, Cameras, Image processing, Fringe analysis, Failure analysis, Interferometry, Video processing, Laser interferometry, Defect detection

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Proceedings Article | 1 November 1991 Paper

Biomedical applications of video-speckle techniques

Ole Lokberg

Proceedings Volume 1525, (1991) https://doi.org/10.1117/12.48186

KEYWORDS: Interferometry, Video, Biomedical optics, Computing systems, Fringe analysis, Holographic interferometry, Holograms, Image processing, Holography, Cameras

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Proceedings Article | 1 October 1991 Paper

Computerized vibration analysis of hot objects

Ole Lokberg, Svein Ellingsrud, Jan Malmo, Geir Rosvold

Proceedings Volume 1508, (1991) https://doi.org/10.1117/12.47103

KEYWORDS: Speckle, Holography, Interferometry, Speckle pattern, Phase shift keying, Digital filtering, Turbulence, Vibrometry, Fringe analysis, Video

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Proceedings Article | 1 March 1991 Paper

Recording and analysis of (high-frequency) sinusoidal vibrations using computerized TV-holography

Hans Pedersen, Svein Ellingsrud, Ole Lokberg

Proceedings Volume 1399, (1991) https://doi.org/10.1117/12.26092

KEYWORDS: Crystals, Speckle, Acoustics, Transducers, Ceramics, Fringe analysis, Phase shifts, Phase modulation, Video, Phase measurement

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Proceedings Article | 1 January 1991 Paper

TV holography and image processing in practical use

Ole Lokberg, Svein Ellingsrud, Eiolf Vikhagen

Proceedings Volume 1332, (1991) https://doi.org/10.1117/12.51066

KEYWORDS: Image processing, Transducers, Fringe analysis, Holography, Computing systems, Interferometry, Optical testing, Holograms, Particles, Interferometers

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Proceedings Article | 1 August 1990 Paper

Image processing and TV-holography

Ole Lokberg, Svein Ellingsrud, Hans Pedersen, Eiolf Vikhagen

Proceedings Volume 1265, (1990) https://doi.org/10.1117/12.20253

KEYWORDS: Image processing, Fringe analysis, Inspection, Interferometry, Holograms, Transducers, Computing systems, Holographic interferometry, Interferometers, Holography

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