Multi-pinhole wide-angle high-resolution light position detector

A point light source angular position-detecting system with wide operating range and high resolution is developed. The sensing part consists of a simple mask with multiple pinholes to cast multiple images of a point light source onto a single CCD area image sensor. The 2D angular position of the lig...

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Veröffentlicht in:	IEEE transactions on instrumentation and measurement 1996-02, Vol.45 (1), p.195-200
Hauptverfasser:	Ma, C.C.H., Tan, C.K., Lawrence, P.D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Actuators Charge coupled devices Exact sciences and technology Image sensors Lenses Light sources Measurements common to several branches of physics and astronomy Mechanical sensors Metrology, measurements and laboratory procedures Physics Radar tracking Robot kinematics Robot sensing systems Spatial dimensions (e.g.: position, lengths, volume, angles, displacements, including nanometer-scale displacements) Spatial dimensions (eg, position, lengths, volume, angles, displacements, including nanometer-scale displacements) Target tracking
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Beschreibung
Zusammenfassung:	A point light source angular position-detecting system with wide operating range and high resolution is developed. The sensing part consists of a simple mask with multiple pinholes to cast multiple images of a point light source onto a single CCD area image sensor. The 2D angular position of the light source is computed from results of curve-fitting through the image positions. The computational burden is low, yet an unusually wide operating angle at high resolution throughout is achieved with a single image sensor.
ISSN:	0018-9456 1557-9662
DOI:	10.1109/19.481334