An all-digital CMOS ambient light sensor using a single photon avalanche diode

Sengupta, Shaan; Ouh, Hyunkyu; Johnston, Matthew L.

doi:10.1109/icsens.2017.8234047

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…Table 1 also shows a comparison with ASICs containing similar functions: an ambient light detector [15] and a contact lens LCD driver [8]. The BD was tested with a controllable light source and it reliably triggers when the illuminance drops at least 65% for 50 ms while the background level is varied over a 15 lux to 5 klux range.…”

Section: Fabrication and Measurement Resultsmentioning

confidence: 99%

An Artificial Iris ASIC With High Voltage Liquid Crystal Driver, 10-nA Light Range Detector and 40-nA Blink Detector for LCD Flicker Removal

Raducanu

Zaliasl

Stanzione

et al. 2020

IEEE Solid-State Circuits Lett.

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In a normally functioning eye, the iris controls the pupil diameter to regulate the amount of light reaching the retina. Various iris deficiencies exist, manifesting as defects in the iris or an absence of one which result in too much light reaching the retina. Some iris deficiencies such as aniridia or leiomyoma can be mitigated with fixed or adaptive artificial irises [1]. As an alternative, adaptive transparency glasses may also alleviate this situation, however both solutions do not mimic the other normal functionality of the natural iris: adaptive aperture. To address this, we developed a fully encapsulated, self-contained artificial iris embedded in a smart contact lens. The control ASIC of the contact lens is developed in 0.18 µm 16 V BCD TSMC and has a typical power consumption of 1.9 µW from a 3 V supply voltage at office light condition.

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Section: Fabrication and Measurement Resultsmentioning

confidence: 99%

An Artificial Iris ASIC With High Voltage Liquid Crystal Driver, 10-nA Light Range Detector and 40-nA Blink Detector for LCD Flicker Removal

Raducanu

Zaliasl

Stanzione

et al. 2020

IEEE Solid-State Circuits Lett.

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show abstract

“…Fig. 5 also shows a comparison table with ASICs containing similar functions: an ambient light detector [5] and a contact lens LCD driver [3]. The BD was tested with a controllable light source and it reliably triggers when the illuminance drops at least 65% during 50ms (measured over 15-5klux), corresponding to the expected shielding provided by the human eye lid and speed of human blink.…”

Section: Proposed Solutionmentioning

confidence: 99%

An Artificial Iris ASIC with High Voltage Liquid Crystal Driver, 10 nA Light Range Detector and 40 nA Blink Detector for LCD Flicker Removal

Raducanu

Asl

Stanzione

et al. 2020

2020 IEEE Symposium on VLSI Circuits

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In a functional eye, the iris controls the pupil diameter to regulate the exposure of the retina. While iris deficiencies such as aniridia or leiomyoma can be mitigated with fixed or adaptive artificial irises [1] and adaptive transparency glasses exist to alleviate this situation, they do not mimic the normal functionality of the natural iris. To address this, a fully encapsulated, self-contained iris embedded in a smart contact lens is proposed.

show abstract

An Angle-Insensitive Time-Interleaved 4-Channels 138dB Dynamic Range Light Sensor with Flicker Detection for Smart Lighting Application

Lin

Wang³

et al. 2023

2023 IEEE International Symposium on Circuits and Systems (ISCAS)

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An all-digital CMOS ambient light sensor using a single photon avalanche diode

Cited by 5 publications

References 7 publications

An Artificial Iris ASIC With High Voltage Liquid Crystal Driver, 10-nA Light Range Detector and 40-nA Blink Detector for LCD Flicker Removal

An Artificial Iris ASIC With High Voltage Liquid Crystal Driver, 10-nA Light Range Detector and 40-nA Blink Detector for LCD Flicker Removal

An Artificial Iris ASIC with High Voltage Liquid Crystal Driver, 10 nA Light Range Detector and 40 nA Blink Detector for LCD Flicker Removal

An Angle-Insensitive Time-Interleaved 4-Channels 138dB Dynamic Range Light Sensor with Flicker Detection for Smart Lighting Application

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