I honestly didn't think I'd use these glasses and still am not sure if i will. Having said that, I'd love to check these out if they ever come to the UK in London.

Interesting concept... a few questions, though.

Has a prototype of this device been made? I'm curious how the vibrations in the frames work out. In terms of comfort, and accuracy. What would the vibrations do when the LIDAR sensors scanned something like a chain link fence? How does the sensations differ between a lower obstacle vs a higher obstacle? How about a moving obstacle (a small child or a dog)?

While the speed of light for the LIDAR is faster than the speed of sound, the speed should be negligible. Both should be high enough that the client wouldn't be travelling faster than either signal.

Would there be an option to power the system while wearing glasses? Many people wear their glasses all day, and not wearing them for even an hour could be problematic, if they forgot to recharge them the night before. Something like a USB charger port for a portable battery? Or maybe some sort of quick charging technology?

In terms of the ad itself... in the second box, on the left hand side, it shows a person with an object falling onto their head.... Judging from where the sensors are positions, these glasses wouldn't prevent that anyways. And most people with regular eyesight wouldn't see an object falling from above them, either.

While not explicitly stated, I would assume the lenses can have different types of shading put in, as well as prescriptions.

I'm also curious, from your point of view, how would the LIDAR option for these glasses be superior to either the iGlasses or the Ultracane?

https://ambutech.com/shop-online/iglasses%E2%84%A2-ultrasonic-mobility-aid

https://www.ultracane.com/

One final, important point.... nowhere in the ad does it say whether it will replace a cane or not. If it does replace a cane, then you would need sensing technology sensitive enough to detect drop-offs (technologically possible) and a method of informing the person without constantly giving them false positives (much more difficult). If it doesn't replace the cane, then you would still need either a cane or a dog for navigation, along with the said drawbacks you listed.