A four-element lens assembly for implementation in a time-of-flight (ToF) camera for a head mounted display (HMD) device provides a wide field of view (FOV), high contrast and illumination at high resolution across the FOV over a relatively long working distance, a sufficiently small package/form factor so as to permit implementation in an HMD device, and relative insensitivity to ambient illumination other than that emitted by the ToF light source

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This work is licensed under a Creative Commons Attribution 4.0 License.