A 192×108 pixel ToF-3D image sensor with single-tap concentric-gate demodulation pixels in 0.13 μm technology
نویسندگان
چکیده
A single-tap concentric photogate pixel of 28 μm pitch is developed for application to time-of-flight (ToF) three dimension (3D) image sensors. The 198×108 ToF pixel array exhibits demodulation contrast higher than 50% and distance error less than 1%, over 1 to 7 m range using 20MHz modulation of 850 nm light emitting diode (LED) illumination.
منابع مشابه
Dark Current Suppression during High Speed Photogate Modulation for 3D ToF Imaging Pixel
A pair of photogates is employed as a high frequency demodulation pixel for three dimensional time-of-flight image sensor. Using a 192×108 array of the pixels, demodulation contrast above 50% is achieved at 20MHz frequency and the test chip exhibits distance error less than 1% up to 7 m detection of the object. Modulation frequency dependent behavior of dark current is observed: dark current is...
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