Laser profilometer module based on a low-temperature cofired ceramic substrate

Veli Heikkinen; Mikko Heikkinen; Kimmo Keranen; Risto S. Mitikka; Veli-Pekka Putila; Kari Tukkiniemi

doi:10.1117/1.2047067

1 September 2005 Laser profilometer module based on a low-temperature cofired ceramic substrate

Veli Heikkinen, Mikko Heikkinen, Kimmo Keranen, Risto S. Mitikka, Veli-Pekka Putila, Kari Tukkiniemi

Author Affiliations +

Optical Engineering, Vol. 44, Issue 9, 093603 (September 2005). https://doi.org/10.1117/1.2047067

Abstract

We realized a laser profilometer module using low temperature cofired ceramics technology. The device consists of a vertical-cavity surface-emitting laser as the light source and a complementary metal oxide semiconductor image sensor as the detector. The laser transmitter produces a thin light stripe on the measurable object, and the receiver calculates the distance profile using triangulation. Because the design of optoelectronic modules, such as the laser profilometer, is usually carried out using specialized software, its electronic compatibility is very important. We developed a data transmission network using commercial optical, electrical, and mechanical design software, which enabled us to electronically transfer data between the designers. The module electronics were realized with multilayer ceramics technology that eases component assembly by providing precision alignment features in the substrate. The housing was manufactured from aluminum using electronic data transfer from the mechanical design software to the five-axis milling workstation. Target distance profiles were obtained from 100 points with an accuracy varying from 0.1 mm at a 5-cm distance to 2 cm at 1.5 m. The module has potential for distance measurement in portable devices where small size, light weight, and low power consumption are important.

©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Veli Heikkinen, Mikko Heikkinen, Kimmo Keranen, Risto S. Mitikka, Veli-Pekka Putila, and Kari Tukkiniemi "Laser profilometer module based on a low-temperature cofired ceramic substrate," Optical Engineering 44(9), 093603 (1 September 2005). https://doi.org/10.1117/1.2047067

Published: 1 September 2005

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KEYWORDS

Electronics

Sensors

Distance measurement

Profilometers

Optics manufacturing

Ceramics

Mechanical engineering

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