Optica· 2020Q1
Megapixel time-gated SPAD image sensor for 2D and 3D imaging applications
- 348citations
- Q1SCImago
- 2020year
Short summary
A new 1-megapixel SPAD camera achieves 3.8 ns time gating and 24 kfps, enabling 5.4 mm resolution 3D imaging over 2m.
AI-generated from the title and abstract; the full text is not read.
Key points
- 1-megapixel SPAD camera with 3.8 ns time gating and 24 kfps frame rate.
- Achieves 27% maximum photon detection probability and 2.0 cps median dark count rate.
- Enables 3D imaging with 5.4 mm resolution and <7.8 mm precision over >2m.
- Demonstrates extended dynamic range and multi-object detection in time-of-flight experiments.
AI-generated from the title and abstract; the full text is not read.
Abstract
We present a 1 Mpixel single-photon avalanche diode camera featuring 3.8 ns time gating and 24 kfps frame rate, fabricated in 180 nm CMOS image sensor technology. We designed two pixels with a pitch of 9.4 µm in 7 T and 5.75 T configurations respectively, achieving a maximum fill factor of 13.4%. The maximum photon detection probability is 27%, median dark count rate is 2.0 cps, variation in gating length is 120 ps, position skew is 410 ps, and rise/fall time is <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mo><</mml:mo> </mml:mrow> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mn>550</mml:mn> </mml:mrow> <mml:mspace width="thickmathspace"/> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="normal">p</mml:mi> <mml:mi mathvariant="normal">s</mml:mi> </mml:mrow> </mml:math> , all FWHM at 3.3 V excess bias. The sensor was used to capture 2D/3D scenes over 2 m with resolution (least significant bit) of 5.4 mm and precision better than 7.8 mm (rms). We demonstrate extended dynamic range in dual exposure operation mode and show spatially overlapped multi-object detection in single-photon time-gated time-of-flight experiments.
The authors' abstract, as published at the source. Optica, 2020 · DOI ↗
Continue with a free account
Ask the paper: 3 free questions a day about this paper; save it, get its citation, new summaries every day for your field. Takeaways are Premium.
Continue free on the webSign in with Google or Apple; no card needed. You come back to this paper.
On your phone:
Field: Instrumentation
InstrumentationPhysics and Astronomy