Projects per year
Abstract
Digital light projector systems are crucial components in applications, including computational imaging, fluorescence microscopy, and highly parallel data communications. Current technology based on digital micromirror displays are limited to absolute frame rates in the few tens of kiloframes per second and require the use of external light sources and coupling optics. Furthermore, to realize gray-scale pixel values using duty cycle control, frame rates are reduced proportionally to the number of gray levels required. Here we present a self-emissive chip-scale projector system based on micro-LED pixels directly bonded to a smart pixel CMOS drive chip. The 128 × 128 pixel array can project binary patterns at up to 0.5 Mfps and toggle between two stored frames at megahertz rates. The projector has a 5-bit gray-scale resolution that can be updated at up to 83 kfps, and can be held in memory as a constant bias for the binary pattern projection. Additionally, the projector can be operated in a pulsed mode, with individual pixels emitting pulses down to a few nanoseconds in duration. Again, this mode can be used in conjunction with the high-speed spatial pattern projection. As a demonstration of the data throughput achievable with this system, we present an optical camera communications application, exhibiting data rates of >5 Gb/s.
Original language | English |
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Article number | 2434-2446 |
Pages (from-to) | 2434-2446 |
Number of pages | 13 |
Journal | Photonics Research |
Volume | 10 |
Issue number | 10 |
DOIs | |
Publication status | Published - 30 Sept 2022 |
Keywords
- ultra-high frame rate
- digital light projector
- chip-scale light-emitting diode (LED)
- LED-on-CMOS
- CMOS drive chip
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QuantIC - The UK Quantum Technology Hub in Quantum Imaging
Dawson, M. (Principal Investigator), Jeffers, J. (Co-investigator) & Strain, M. (Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/12/19 → 31/05/25
Project: Research
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Structured illumination and digital lighting at the few-photon level (full proposal)
Herrnsdorf, J. (Fellow)
EPSRC (Engineering and Physical Sciences Research Council)
29/06/18 → 31/01/22
Project: Research Fellowship
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UK Quantum Technology Hub in Quantum Enhanced Imaging (Quantic) / RA8967
Jeffers, J. (Principal Investigator)
1/10/14 → 30/09/19
Project: Research - Internally Allocated
Datasets
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Characterisation data for high-speed 128x128 LED array and application to optical camera communications
Herrnsdorf, J. (Creator), Bani Hassan, N. (Creator), Dehkhoda, F. (Contributor), Henderson, R. (Supervisor), Strain, M. (Supervisor) & Dawson, M. (Supervisor), University of Strathclyde, 23 Nov 2021
DOI: 10.15129/b0f4afe8-fa22-444e-a29e-d9b6f754930f
Dataset
Research output
- 12 Citations
- 1 Working paper
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Ultra-high frame rate digital light projector using chipscale LED-on-CMOS technology
Bani Hassan, N., Dehkhoda, F., Xie, E., Herrnsdorf, J., Strain, M. J., Henderson, R. & Dawson, M. D., 24 Nov 2021, (Submitted) Ithaca, N.Y., 20 p.Research output: Working paper
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