Recently, a new Microsoft patent titled ‘Wearable display device calibration’ was published by USPTO. This patent is trying proposing a method to calibrate a wearable display device. A challenge to the implementation of wearable display devices, such as a head-mounted display (HMD), for augmented reality is maintaining the alignment of the two, independent left display lens system and right display lens system of a wearable display device. For binocular viewing systems, such as a wearable display device (e.g., glasses or a head-mounted display), the left and right display lens systems generate independent images of the same view. If the left and right display lens systems are not properly aligned so that the left and right images are projected directly one over the other, then the user’s view will appear blurry. This is particularly noticeable for a vertical misalignment of the images, whereas a person’s eyes can adjust to correct for a minor horizontal misalignment of the images. A conventional approach is to utilize a bulky and cumbersome opto-mechanical alignment system....

The rest of the story...
Microsoft News