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Q&A

Comments on Are there consumer products using Time of Flight ranging camera technology?

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Are there consumer products using Time of Flight ranging camera technology?

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There was some years ago announcements of new developments in cameras that were able to record the intensity and time lag of light that they detected to be able to view the range topology and reflectance of a target.

Does anyone know if such camera technology has been commercialised yet?

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I have located a source for a development system for the technology that I was seeking. It is not a mature consumer product yet but it looks like the technology has not been forgotten which gives me hope.

A company Melexis has a camera system and LumiLEDs provides a high-frequency LED illuminator option (it seems VCEL laser is the primary illumination technology) as part of a demelopment system.

The EVK75024-110-940-1 laser illuminating development board was available from Mouser at one point but no longer in stock though the latest Gen3 board seems to be a current item it is also no stock and shows a price over US$2000.

The older specification sheet and the Gen3 specifications make for good reading and it seems that some of the bare TOF sensor chips are currently also available from Mouser.

The Melexis site is not responding very well but some of the pages are on the Wayback Machine from October last year including a November announcement of a Gen3 TOF sensor. The company also provides a range of other automotive sensor technology.

It seems the technology is not quite ready for primetime though they claim millions of sensors sold so happily not forgotten. I do not know if Melexis was the company that put out the press release some years back when I first saw it but the technology was as I remember with pulsed illumination. It does seem that there is only limited optical information and it is possible that only the range information is passed through as standard.

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New developments (3 comments)
New developments
KalleMP‭ wrote almost 2 years ago · edited almost 2 years ago

A company imec has published a paper (behind a paywall) describing their developments in IR imaging that include ToF sensors.

DOI:10.1117/12.2559949 - "Image sensors for low cost infrared imaging and 3D sensing" - Jiwon Lee, et.al. - 2020

https://www.semanticscholar.org/paper/Image-sensors-for-low-cost-infrared-imaging-and-3D-Lee-Georgitzikis/994ffa84828f7058068cc87df2c2bcee2adb4db1#paper-header

KalleMP‭ wrote almost 2 years ago

It seems that ST has also made more recent announcements of early prototypes for commercial implementation in consumer products. It does rather look like the technology is starting to mature. Below in an news report and a published paper that is presumed to relate to this technology.

"ST Unveils its First iToF Sensor with 0.5MP Resolution" - 2022 https://image-sensors-world.blogspot.com/2022/02/st-unveils-its-first-itof-product-with.html

"Demodulation Contrast simulation for indirect Time-of-Flight sensors based on Fast Photo-Diode" - G. Mugny, et.al. - 2022 https://imagesensors.org/Past%20Workshops/2021%20Workshop/2021%20Papers/R16.pdf

KalleMP‭ wrote over 1 year ago

Additional to the ST products there is other activity.

It looks like a company JointMicro has a product/sensor of some sort JM152A iToF.

It also looks like a KickStarter that will make use of a Sony ToF sensor was well subscribed. Pledging a sum of HK$235 should get you a camera before year end.

Some details showed up at https://www.kickstarter.com/projects/arducam/time-of-flight-tof-camera-for-raspberry-pi