Electro-optical leveler using a bowl-shaped lens

Jih Huah Wu; Shiuan Leh Lin; Jun Gi Chen; Rong Sen Chang

doi:10.1117/1.2188413

Electro-optical leveler using a bowl-shaped lens

Jih Huah Wu, Shiuan Leh Lin, Jun Gi Chen, Rong Sen Chang

Department of Optics and Photonics

Research output: Contribution to journal › Article › peer-review

Abstract

A low-cost, compact ectro-optical leveler, using a CMOS image sensor, has been developed for level measurement. The two-lens optical system is designed to find the tilt information for the total system. ZEMAX is used to design and predict the performance of this optical system. One lens is bowl-shaped so that it can hold a liquid. The centroid of the light spot on the CMOS image sensor is converted into pixel coordinates proportional to the tilt angle to be measured. The experimental results verified the simulation results. The reading tilt angle can be estimated with a resolution at better than 8 arcsec.

Original language	English
Article number	043603
Journal	Optical Engineering
Volume	45
Issue number	4
DOIs	https://doi.org/10.1117/1.2188413
State	Published - Apr 2006

Keywords

Centroid method
CMOS image sensor
Level
Tilt angle measurement

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10.1117/1.2188413

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title = "Electro-optical leveler using a bowl-shaped lens",

abstract = "A low-cost, compact ectro-optical leveler, using a CMOS image sensor, has been developed for level measurement. The two-lens optical system is designed to find the tilt information for the total system. ZEMAX is used to design and predict the performance of this optical system. One lens is bowl-shaped so that it can hold a liquid. The centroid of the light spot on the CMOS image sensor is converted into pixel coordinates proportional to the tilt angle to be measured. The experimental results verified the simulation results. The reading tilt angle can be estimated with a resolution at better than 8 arcsec.",

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AU - Lin, Shiuan Leh

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AU - Chang, Rong Sen

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N2 - A low-cost, compact ectro-optical leveler, using a CMOS image sensor, has been developed for level measurement. The two-lens optical system is designed to find the tilt information for the total system. ZEMAX is used to design and predict the performance of this optical system. One lens is bowl-shaped so that it can hold a liquid. The centroid of the light spot on the CMOS image sensor is converted into pixel coordinates proportional to the tilt angle to be measured. The experimental results verified the simulation results. The reading tilt angle can be estimated with a resolution at better than 8 arcsec.

AB - A low-cost, compact ectro-optical leveler, using a CMOS image sensor, has been developed for level measurement. The two-lens optical system is designed to find the tilt information for the total system. ZEMAX is used to design and predict the performance of this optical system. One lens is bowl-shaped so that it can hold a liquid. The centroid of the light spot on the CMOS image sensor is converted into pixel coordinates proportional to the tilt angle to be measured. The experimental results verified the simulation results. The reading tilt angle can be estimated with a resolution at better than 8 arcsec.

KW - Centroid method

KW - CMOS image sensor

KW - Level

KW - Tilt angle measurement

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Electro-optical leveler using a bowl-shaped lens

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Keywords

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