Designing a Passive Lidar Detector Device

atredis.com

82 pointsspeckx8 comments

I admit it's a nice experiment, but I guess the title should be "detecting iPhone Lidar".

Both the 60Hz frequency and 940nm wavelength are fairly specific. There's a whole world of different wavelengths (1550nm is fairly common) and frequencies (up to 1MHz isn't particularly exceptional).

There's been a whole thread on the topic here:

https://news.ycombinator.com/item?id=46110395

Agreed, I immediately thought of vehicles, but this is cool too.

Right, I wonder if they considered a pulse-detector with a dichroic filter and a 555?

If you are sensitive to flashing - do not try to open this link. It is impossible to read because of videos of flashing lights.

Reader view ftw!

Makes me wonder about how safe lidar is for humam and animal eyeballs?

The videos are of invisible wavelengths of light transformed into visible light. Why does that make you ponder the safety of the infrared light?

I have some very bad news for you about the kinds of light emitted by the sun and also your oven

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