High performance multispectral TDI CCD image sensors

Yichun Luo; Charles Smith; Nixon O; Melanie Ledgerwood; Sukhbir Kullar

doi:10.1117/12.2030598

24 October 2013 High performance multispectral TDI CCD image sensors

Yichun Luo, Charles Smith, Nixon O, Melanie Ledgerwood, Sukhbir Kullar

Proceedings Volume 8889, Sensors, Systems, and Next-Generation Satellites XVII; 88891C (2013) https://doi.org/10.1117/12.2030598
Event: SPIE Remote Sensing, 2013, Dresden, Germany

Abstract

We developed a Time Delay Integration (TDI) CCD image sensor that consists of four multispectral bands (B1-B4 zone) and one panchromatic band (P zone) in an integrated, compact package. The B zones have a horizontal resolution of 3k columns, with a pixel size of 28 μm x 28 μm. The P zone has a horizontal resolution of 12k columns, with a pixel size of 7 μm x 7 μm. The large pixel size of B zones provides excellent colour differentiation even under extremely low light intensity, while the small pixel size and the large pixel number of broad band zone (P zone) provides high resolution images within a wide spectrum range. By utilizing a particularly designed hybrid optical filter, the sensor is able to collect blue, green, red, and near infrared images with only negligible optical crosstalk. The sensor uses selectable outputs and data rate: 2 or 1 outputs running at 16.5 MHz (B1-B4 Zone) per output, and 8 or 4 outputs running at 33 MHz (P Zone) per output. Special design features minimize optical crosstalk between the image zones, and achieve a low signal noise: ≤ 85 e^- in B zone, and ≤ 35 e^- in P zone. To acquire spectral reflectance signatures with good fidelity, the image sensor must be very sensitive to weak light in some spectral bands and cannot be over exposed to light in other spectral bands. To fulfil this requirement, the sensor is designed to show a balanced responsivity in all the image zones. Over all, the sensor demonstrates outstanding performance, providing exceptional images that are crucial for remote sensing applications.

Citation Download Citation

Yichun Luo, Charles Smith, Nixon O, Melanie Ledgerwood, and Sukhbir Kullar "High performance multispectral TDI CCD image sensors", Proc. SPIE 8889, Sensors, Systems, and Next-Generation Satellites XVII, 88891C (24 October 2013); https://doi.org/10.1117/12.2030598

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
10 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Sensors

CCD image sensors

Charge-coupled devices

Image resolution

Multispectral imaging

Contrast transfer function

Quantum efficiency

Show All Keywords

Keywords/Phrases

Search In:

Publication Years