- 多模式:
- 光子计数
- 2D图像
- 3D渡越时间
- TCSPC(时间相关单光子计数)
- 图像尺寸:32x32 (1024) pixels
- 像素内计数器:6 bit (光子计数)
- 像素内TDC:10 bit (光子计时)
- 最大帧数:100,000 fps (burst)/ 10,000 fps (continuous)
- 时间分辨:312 ps – 0.9 ns
- 满量程范围:320 ns – 0.92 µs
- 硬件接口:USB 2.0
- 软件界面:MATLAB
TCSPC(时间相关单光子计数)相机基于32x32智能像素,每个像素包含一个SPAD(单光子雪崩二极管)探测器和一个时间数字转换器(TDC)。
在2D /强度模式下,SPAD阵列每帧提供1024个“字”,每个“字”6bit(即单帧光子计数动态最多64光子)。在3D深度分辨/计时模式下,SPAD阵列每帧提供1024个“字”,每个“字”10bit(即单帧时间分辨低至312 ps,满量程范围320 ns)。帧数在burst模式下高达100kfps(即最小积分帧时间为10 us),连续模式为10kfps。
Parameter | Notes | Min | Typ | Max | Units |
Resolution | number of pixels | 32x32 | pixels | ||
SPAD diameter | diameter of the SPAD into each pixel | 30 | µm | ||
Pixel pitch | size of each pixel | 150 | µm | ||
Pixel fill‐factor | with no microlens | 3.14 | % | ||
PhotonDetectionEfficiency(PDE) of SPAD detectors | @ 420nm | 50 | % | ||
@ 300nm and @650nm | 20 | % | |||
@ 800nm | 5 | % | |||
Dark count rate(DCR) | with VEX=5V | 100 | cps | ||
Afterpulsing | with 20 ns hold‐off time | 2.6 | % | ||
Optical cross‐talk | between nearest pixels | 0.01 | % | ||
Photon‐counting dynamics | number of bits of the in‐pixel counter | 6 | bit | ||
Photon‐timing dynamics | number of bits of the in‐pixelTDC | 10 | bit | ||
On‐board clock(fclock) | adjustable through the GUI interface | 70 200 | MHz | ||
TDC least significant bit(LSB)[1] | withfclock=200MHz | 312 | ps | ||
withfclock=160MHz | 390 | ps | |||
withfclock=70MHz | 900 | ps | |||
TDC full‐scale range(FSR)[1] | withfclock=200MHz | 320 | ns | ||
withfclock=160MHz | 400 | ns | |||
withfclock=70MHz | 920 | ns | |||
Full‐scale depth range | max scene depth, around the target distance (even kilometers from the camera, depending on the optical setup) | 48 | 60 | 138 | m |
TDC single‐shot precision(FWHM) | with clock=160MHz (all 32x32 TDC working in parallel) | 660 | ps | ||
Frame‐rate | Burst mode(limited by FPGA read‐out) | no limit | 100,000 | fps | |
Continuous mode(limited by USB2.0 link) | no limit | 10,000 | fps | ||
Camera power supply | +5 | V | |||
Lensconnector | 12mm–F/1.4C‐Mount |