Dr. Erning Wihardjo Profile

Dr. Erning Wihardjo

Sr. Scientist at Univ Kristen Krida Wacana

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Publications (4)

Proceedings Article | 11 November 2016

Pre-cataract surgery test using speckle pattern

Suganda Jutamulia, Erning Wihardjo, Joewono Widjaja

Proc. SPIE. 10150, Second International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2016)

KEYWORDS: Surgery, Speckle, Semiconductor lasers, Retina, Speckle pattern, Eye, Collimation, Spatial frequencies, Opacity, Cornea

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SPIE Journal Paper | 1 March 1995

Interferometric measurement of actual oblique astigmatism of ophthalmic lenses

Erning Wihardjo

OE Vol. 34 Issue 03

KEYWORDS: Monochromatic aberrations, Lenses, Eye, Interferometry, Interferometers, Lens design, Beam splitters, Collimators, Wavefronts, Algorithm development

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Proceedings Article | 1 December 1991

Accurate method for measuring oblique astigmatism and oblique power of ophthalmic lenses

Erning Wihardjo, Donald Silva

Proc. SPIE. 1529, Ophthalmic Lens Design and Fabrication

KEYWORDS: Monochromatic aberrations, Eye, Lenses, Wavefronts, Interferometers, Lens design, Collimators, Chromium, Visual optics

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SPIE Journal Paper | 1 June 1990

Parallel optical logic gates using one-dimensional spatial encoding

Erning Wihardjo, Demas Sanger

OE Vol. 29 Issue 06

KEYWORDS: Computer programming, Image processing, Optical logic, Logic devices, Optical arrays, Array processing, Binary data

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