So you want to get started with augmented reality development? You may want to consider getting a Meta 2 Development Kit. This wearable device has a 90-degree field of view and 2560 x 1440 resolution display. It has a see-through design, so you can see people around you. The device can run your favorite Windows apps.
Meta 2 has a 720p front-facing camera, 4-speaker audio, and sensors for positional tracking. It offers brightness and volume control. You can pre-order yours here.