Print Email Facebook Twitter Design and Realization of a Lensless CMOS Image Sensor for Light Source Tracking Title Design and Realization of a Lensless CMOS Image Sensor for Light Source Tracking Author Sanseven, Secil (TU Delft Electrical Engineering, Mathematics and Computer Science) Contributor Vollebregt, S. (mentor) Romijn, J. (mentor) Degree granting institution Delft University of Technology Programme Electrical Engineering Date 2021-11-08 Abstract Localization of a light source in the space requires capturing its light intensity and angle information. However, conventional CMOS image sensors can only capture light intensity and wavelength. These sensors need to be augmented with an optical extension such as an aperture or a lens in order to capture the angle information. The use of optical apertures presents various drawbacks regarding the need for calibration, the difficulty of miniaturization, and CMOS integration. This work presents a lensless CMOS image sensor architecture for light source tracking applications, thereby eliminating the need for an optical aperture for angle sensitivity. The proposed design of angle-sensitive pixels (ASPs) with 1 um, 1.5 um, and 2 um grating pitches are implemented on a 5.6x5.6 um2 photodiode array. The fabricated ASP device with 2 um grating pitch can resolve angles up to 0.37∘ accuracy with post-process characterization. Furthermore, a metal shading structure is incorporated into the pixel array for coarse angle detection which determines the incident angle’s location on the periodic ASP response. Subject Angle sensitive pixelsBiCMOSAngle sensitivityLight source trackingPixel arrayDiffraction grating To reference this document use: http://resolver.tudelft.nl/uuid:d7021c33-fda8-4442-94bf-79840712f075 Embargo date 2023-11-08 Part of collection Student theses Document type master thesis Rights © 2021 Secil Sanseven Files PDF MSc_Thesis_Secil_Sanseven.pdf 74.61 MB Close viewer /islandora/object/uuid:d7021c33-fda8-4442-94bf-79840712f075/datastream/OBJ/view