Self‐calibration strategies for reducing systematic slope measurement errors of autocollimators in deflectometric profilometry von Geckeler, Ralf D., Just, Andreas, Krause, Michael, Schnabel, Olaf, Lacey, Ian, English, Damon, Yashchuk, Valeriy V.

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Capabilities and limitations of the self-calibration of angle encoders von Geckeler, Ralf D, Link, Alfred, Krause, Michael, Elster, Clemens

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A comparison of traceable spatial angle autocollimator calibrations performed by PTB and VTT MIKES von Geckeler, Ralf D, Schumann, Matthias, Just, Andreas, Krause, Michael, Lassila, Antti, Heikkinen, Ville

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A shearing-based method for the simultaneous calibration of angle measuring devices von Geckeler, Ralf D, Just, Andreas

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The spatial angle autocollimator calibrator: optimised model, uncertainty budget and experimental validation von Schumann, Matthias, Geckeler, Ralf D, Krause, Michael, Just, Andreas

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Autocollimators for deflectometry: Current status and future progress von Geckeler, Ralf D., Just, Andreas, Krause, Michael, Yashchuk, Valeriy V.

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Environmental influences on autocollimator-based angle and form metrology von Geckeler, Ralf D., Křen, Petr, Just, Andreas, Schumann, Matthias, Krause, Michael, Lacey, Ian, Yashchuk, Valeriy V.

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Influence of the air's refractive index on precision angle metrology with autocollimators von Geckeler, Ralf D, K en, Petr, Just, Andreas, Schumann, Matthias, Krause, Michael

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Investigations of interpolation errors of angle encoders for high precision angle metrology von Yandayan, Tanfer, Geckeler, Ralf D, Just, Andreas, Krause, Michael, Akgoz, S Asli, Aksulu, Murat, Grubert, Bernd, Watanabe, Tsukasa

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Optimal use of pentaprisms in highly accurate deflectometric scanning von Geckeler, Ralf D

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High precision tilt stage as a key element to a universal test mirror for characterization and calibration of slope measuring instruments von Yashchuk, Valeriy V., Artemiev, Nikolay A., Centers, Gary, Chaubard, Arthur, Geckeler, Ralf D., Lacey, Ian, Marth, Harry, McKinney, Wayne R., Noll, Tino, Siewert, Frank, Winter, Mathias, Zeschke, Thomas

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Calibration of angle encoders using transfer functions von Geckeler, Ralf D, Fricke, Andreas, Elster, Clemens

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Approaching sub-50 nanoradian measurements by reducing the saw-tooth deviation of the autocollimator in the Nano-Optic-Measuring Machine von Qian, Shinan, Geckeler, Ralf D., Just, Andreas, Idir, Mourad, Wu, Xuehui

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Angle comparison using an autocollimator von Geckeler, Ralf D, Just, Andreas, Vasilev, Valentin, Prieto, Emilio, Dvorácek, František, Zelenika, Slobodan, Przybylska, Joanna, Duta, Alexandru, Victorov, Ilya, Pisani, Marco, Saraiva, Fernanda, Salgado, Jose-Antonio, Gao, Sitian, Anusorn, Tonmueanwai, Tan, Siew Leng, Cox, Peter, Watanabe, Tsukasa, Lewis, Andrew, Chaudhary, K P, Thalmann, Ruedi, Banreti, Edit, Nurul, Alfiyati, Fira, Roman, Yandayan, Tanfer, Chekirda, Konstantin, Bergmans, Rob, Lassila, Antti

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New frontiers in angle metrology at the PTB von Geckeler, Ralf D., Krause, Michael, Just, Andreas, Kranz, Oliver, Bosse, Harald

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Non-linear air pressure sensitivity of angle metrology with autocollimators von Schumann, Matthias, Geckeler, Ralf D., Just, Andreas, Krause, Michael

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Angle comparison using an autocollimator von Thalmann, Rudolf, Just, Andreas, Geckeler, Ralf

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Sub-microradian surface slope metrology with the ALS Developmental Long Trace Profiler von Yashchuk, Valeriy V., Barber, Samuel, Domning, Edward E., Kirschman, Jonathan L., Morrison, Gregory Y., Smith, Brian V., Siewert, Frank, Zeschke, Thomas, Geckeler, Ralf, Just, Andreas

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Terahertz profilometry at 600 GHz with 05 μm depth resolution von Hils, Bernd, Thomson, Mark D., Löffler, Torsten, Spiegel, Wolff von, Weg, Christian am, Roskos, Hartmut G., Maagt, Peter de, Doyle, Dominic, Geckeler, Ralf D.

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Improving the Measurement of the Diameter of Si Spheres von Nicolaus, R.A., Geckeler, R.D.

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