Ultracompact RGB hybrid LD-SLED module based on micro-optics

N. Primerov; C. Jobson; J. Rios; S. Gloor; N. Matuschek; T. von Niederhäusern; M. Rossetti; A. Castiglia; M. Malinverni; M. Duelk; C. Vélez

doi:10.1117/12.2675600

7 August 2023 Ultracompact RGB hybrid LD-SLED module based on micro-optics

N. Primerov, C. Jobson, J. Rios, S. Gloor, N. Matuschek, T. von Niederhäusern, M. Rossetti, A. Castiglia, M. Malinverni, M. Duelk, C. Vélez

Author Affiliations +

Proceedings Volume 12624, Digital Optical Technologies 2023; 1262415 (2023) https://doi.org/10.1117/12.2675600
Event: SPIE Digital Optical Technologies, 2023, Munich, Germany

Abstract

We present, to the best of our knowledge, the first compact, full-color, hybrid RGB LD-SLED light source module designed for near-to-eye display systems. This module integrates a blue and green semiconductor laser diode (LD) at a wavelength of 453 nm and 520 nm, respectively, and a red superluminescent diode (SLED) at 639 nm in combination with a novel micro-optical, free-space architecture. The light source module includes circularizing optics, wavelengthcombining filters, and a single aspheric collimation lens. The light source module has a compact footprint of 7.7 mm x 10.8 mm and generates collimated, circular and collinearly aligned RGB beams with low divergence and large diameters in the range of 1.7 mm to 2.2 mm at the optical output. The current generation of this light source module delivers up to 15 mW of optical power per color, with a total power dissipation value of only 430 mW.

Citation Download Citation

N. Primerov, C. Jobson, J. Rios, S. Gloor, N. Matuschek, T. von Niederhäusern, M. Rossetti, A. Castiglia, M. Malinverni, M. Duelk, and C. Vélez "Ultracompact RGB hybrid LD-SLED module based on micro-optics", Proc. SPIE 12624, Digital Optical Technologies 2023, 1262415 (7 August 2023); https://doi.org/10.1117/12.2675600

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