New 3D-vision Sensor for Shape Measurement Applications

Moring, Ilkka; Myllyla, R.; Honkanen, Eero; Kaisto, Ilkka P.A.; Kostamovaara, J.; Mäkynen, Anssi; Manninen, Merja

doi:10.1117/12.969856

Cited by 3 publications

(1 citation statement)

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“…The one-axis measurement configuration used here, as presented in Figure la, is based on the laser 3D-coordinate measuring system. 1 ' 3 The sensor head consists of an auto-focus system, prism optics which combine the transmitting and receiving beams and the HeNe pointer on the same axis, and an automatically controlled optical attenuator. The receiving optics of a laser rangefinder sensor collect the optical power from the object and launches it into a receiving fibre.…”

Section: Linearitymentioning

confidence: 99%

On the use of optical fibres in a pulsed time-of-flight laser rangefinder

Nissilä

Kostamovaara

1995

Robotica

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SummaryThe pulsed time-of-flight laser rangefinding technique has been used in many industrial measurement applications, including 3D-coordinate measuring devices, hot surface profilers and mobile robot sensors. Optical fibres, typically 1–10 m in length and 100–400 μm in diameter can be used to guide optical pulses to the separate sensing head of the measurement device. The use of a large multimode fibre may cause problems, however, when aiming at millimetre accuracy, as the construction and adjustment of the optics of the sensor head may affect the transit time linearity and measurement accuracy via multimode dispersion. Environmental effects, such as bending, vibration due to the moving sensing head and temperature, also cause measurement errors. The error sources are studied and characterized in this paper.

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Section: Linearitymentioning

confidence: 99%