How many patents does Vuzix have?

Could you please elaborate on the patent portfolio of Vuzix? Specifically, I'm interested in understanding the scale of their patent holdings. I would like to get a general overview of the number of patents they have, as this could indicate their level of innovation and technological advancement. Is there a publicly available figure or an estimate of how many patents Vuzix has? It would be highly informative for assessing their competitiveness in the field of augmented reality and virtual reality technologies.