Re:Rivian Unveils Custom Silicon, R2 Lidar Roadmap, and Univ...
by stoneman24 on Thursday December 11, 2025 @02:24PM
(#46235950)
Do you if there has been any work how lasers affect other animals and insects?
Am I being catastrophically pessimistic to think that in addition to swatting insects as it moves forward, the cars lidar is blinding insects in a several hundred meter path ?
Iām very optimistic about automated cars being better than most humans but wonder about side effects.
Re:Rivian Unveils Custom Silicon, R2 Lidar Roadmap, and Univ...
by fragmede on Thursday December 11, 2025 @07:47PM
(#46239522)
If we have automated anti-mosquito vehicles just roaming around, the world would be a better place. There might be some second order effects from removing mosquitoes that we haven't predicted, but fuck mosquitoes.
Re:Rivian Unveils Custom Silicon, R2 Lidar Roadmap, and Univ...
by dash2 on Thursday December 11, 2025 @08:59PM
(#46240014)
Unfortunately not all insects are mosquitoes, and one reason we have many fewer birds in (e.g.) the UK than when I was young, is the decline of insect life.
Re:Rivian Unveils Custom Silicon, R2 Lidar Roadmap, and Univ...
by tennysont on Thursday December 11, 2025 @05:02PM
(#46237838)
Follow up question that you might know: would multiple LIDAR sensor actually be additive like that? If you can stand a foot away from a car's LIDAR sensor and be unharmed, then can't you have:
| Distance | # of Sensors |
| 1 | 1 |
| 3 | 9 |
| 5 | 25 |
| 10 | 100 |
| 25 | 625 |
| 50 | 2500 |
| 100 | 10000 |
x^2 sensors at x feet from you and have the same total energy delivered? If sensors are actually safe to look at from 6in or 3in, then multiple the above table by 4 or 16.It seems like, due to the inverse square law, the main issue is how close you can get your eye to a LIDAR sensor under normal operation, not how many sensors are scattered across the environment. The one exception I can think of is a car that puts multiple LIDAR arrays next to each other (within a foot or two). But maybe I'm misunderstanding something!
> If you have many lidars around, the beams from each 905 nm lidar will be focused to a different spot on your retina, and you are no worse off than if there was a single lidar. But if there are many 1550 nm lidars around, their beams will have a cumulative effect at heating up your cornea, potentially exceeding the safety threshold.
[1] https://news.ycombinator.com/item?id=46127479