Improvements in size, weight, and cost of laser modules for AR/VR/MR using stamped reflective optics

Yang Chen; R. Ryan Vallance; Peter Gordon; King-Fu Hii; Jeremy Burke; Tiger Ninomoya; Bernard Lee

doi:10.1117/12.2649129

18 April 2023 Improvements in size, weight, and cost of laser modules for AR/VR/MR using stamped reflective optics

Yang Chen, R. Ryan Vallance, Peter Gordon, King-Fu Hii, Jeremy Burke, Tiger Ninomoya, Bernard Lee

Proceedings Volume 12449, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) IV; 124491S (2023) https://doi.org/10.1117/12.2649129
Event: SPIE AR | VR | MR, 2023, San Francisco, California, United States

Abstract

Augmented, virtual, and mixed reality (XR) displays require miniature light engines that can be worn near-theeye. Laser beam scanner (LBS) architectures use light from a hermetically-sealed laser beam module (LBM) and scan the light with a MEMS mirror into a combiner. This paper presents an improved method for packaging a red, green, and blue (RGB) LBM using stamped mirror arrays that fold the light beam, correct beam shape, and redirect beam propagation to a MEMS mirror. The mirror array simplifies the optical path and eliminates passive components like dichroic filters and refractive lenses such as those used for slow-axis and fast-axis correction. This new approach reduces the size, weight, and cost of LBMs for XR applications.

Citation Download Citation

Yang Chen, R. Ryan Vallance, Peter Gordon, King-Fu Hii, Jeremy Burke, Tiger Ninomoya, and Bernard Lee "Improvements in size, weight, and cost of laser modules for AR/VR/MR using stamped reflective optics", Proc. SPIE 12449, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) IV, 124491S (18 April 2023); https://doi.org/10.1117/12.2649129

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