Compact RGB module with blue, green LDs and red SLED and collinearly aligned collimated output beams

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

doi:10.1117/12.3001926

12 March 2024 Compact RGB module with blue, green LDs and red SLED and collinearly aligned collimated output beams

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 12913, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) V; 129130P (2024) https://doi.org/10.1117/12.3001926
Event: SPIE AR | VR | MR, 2024, San Francisco, California, United States

Abstract

We introduce an enhanced version of a full-color, RGB hybrid LD-SLED light source module for near-to-eye display systems, predominantly tailored for laser beam scanning (LBS) architectures. This light source module integrates blue and green semiconductor laser diodes (LD) emitting at wavelengths of 455 nm and 520 nm, respectively, along with a red superluminescent diode (SLED) operating at 638 nm. Besides the RGB emitter devices, this micro-RGB module includes collimation optics, wavelength-combining filters, and a prism pair to achieve circular output beams, all packaged with an innovative micro-optical, free-space bench architecture. With a compact footprint of 5.5 mm x 8.6 mm, this module produces collimated, circular, and collinearly aligned RGB beams with minimal divergence and large diameters of 1.0-1.3 mm at the module output. This third generation of an micro-RGB light source module delivers up to 50 mW of optical power per color at a total power dissipation of 1.2 W.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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 "Compact RGB module with blue, green LDs and red SLED and collinearly aligned collimated output beams", Proc. SPIE 12913, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) V, 129130P (12 March 2024); https://doi.org/10.1117/12.3001926

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KEYWORDS

Collimation

RGB color model

Beam diameter

Light sources

Beam divergence

Optical alignment

Emission wavelengths

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