Designing a Passive Lidar Detector Device(atredis.com)

82 pointsby speckxil y a 7 mois8 comments

Designing a Passive Lidar Detector Device

https://www.atredis.com/blog/2025/11/20/designing-a-passive-lidar-detection-sensor

11 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

aidenn0il y a 7 mois

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

MPSimmonsil y a 7 mois

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

[deleted]il y a 7 mois

vzalivail y a 7 mois

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

elricil y a 7 mois

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

garbagewomanil y a 7 mois

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

estimator7292il y a 7 mois

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

BrianGraggil y a 7 mois

Reader view ftw!

486sx33il y a 7 mois

_jzlwil y a 7 mois