A miniaturized laser illumination module

A. T. Winzer; J. Freitag; P. Dannberg; M. Hintz; M. Schädel; V. Sandhya; H.-J. Freitag

doi:10.1117/12.2191318

23 September 2015 A miniaturized laser illumination module

A. T. Winzer, J. Freitag, P. Dannberg, M. Hintz, M. Schädel, V. Sandhya, H.-J. Freitag

Proceedings Volume 9626, Optical Systems Design 2015: Optical Design and Engineering VI; 96261X (2015) https://doi.org/10.1117/12.2191318
Event: SPIE Optical Systems Design, 2015, Jena, Germany

Abstract

We present a wafer-based technology for mass production of miniaturized laser units. Heart of the approach is a glass wafer, comprising a metal structure acting as electrical contact, optical aperture and mechanical carrier of up to several thousands of flipped surface emitting laser diodes on one side, and a polymer-on-glass micro optical array on the other side. Mounting and characterization methods performed on wafer level are presented. After separation the size of a single laser unit is as small as 640 x 700 x 1400 μm³ and achieves spot diameters below 1 mm at distance of 120 mm. Performance and excellent cost potential allows for application in optical micro sensors and consumer electronics.

Citation Download Citation

A. T. Winzer, J. Freitag, P. Dannberg, M. Hintz, M. Schädel, V. Sandhya, and H.-J. Freitag "A miniaturized laser illumination module", Proc. SPIE 9626, Optical Systems Design 2015: Optical Design and Engineering VI, 96261X (23 September 2015); https://doi.org/10.1117/12.2191318

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