It isn't however opaque for optical glass (since the LIDAR has to shine through optical glass in the first place) so it hits your camera lens, goes straight through, and slams the sensor.
The eye safety threshold for 850/905 nm is a lot lower than 1550 nm, so they output way less power, but the much better sensitivity of silicon sensors makes up for it partially. You can also squeeze out more range using clever signal processing and a large optical aperture (which allows you to output more light, but since the light is spread out across the aperture, the intensity doesn't exceed the threshold). Typically, the range of 850/905 nm lidars is less than that of 1550 nm lidars though.
On the bright side, due to lower power, there hasn't been any instances (to my knowledge) of 850 nm and 905 nm lidars damaging cameras, whereas at least two different 1550 nm lidars have been known to destroy cameras (Luminar and AEye).
On the Luminar lidar website [1] they proudly advertise "1,000,000x pulse energy of 905nm".
I was just speaking in terms of the commonplace LIDAR solutions for road use.