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Next-Generation CMOS Redefines Trade-Offs for Inspection

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Behnam Rashidian and Eric Fox, Teledyne Dalsa

In the CMOS imaging device design process, some trade-offs are related to the physics of operating the device; others are due to practical non-idealities in the implementation of the design. To come up with an optimal CMOS imaging device design, all of these factors should be considered. Over the past 10 years, CMOS imaging technology has been increasingly adopted by OEMs in the machine vision industry, although progress has required considerable time and investment. Integrated circuit design is always a process of optimizing trade-offs between limiters, but innovations in design and...Read full article

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    Published: March 2012
    Glossary
    fill factor
    In solar energy technology, the percent of usable land covered by collectors. The horizontal collector is the only design that exhibits 100 percent fill factor.
    machine vision
    Machine vision, also known as computer vision or computer sight, refers to the technology that enables machines, typically computers, to interpret and understand visual information from the world, much like the human visual system. It involves the development and application of algorithms and systems that allow machines to acquire, process, analyze, and make decisions based on visual data. Key aspects of machine vision include: Image acquisition: Machine vision systems use various...
    noise
    The unwanted and unpredictable fluctuations that distort a received signal and hence tend to obscure the desired message. Noise disturbances, which may be generated in the devices of a communications system or which may enter the system from the outside, limit the range of the system and place requirements on the signal power necessary to ensure good reception.
    power
    With respect to a lens, the reciprocal of its focal length. The term power, as applied to a telescope or microscope, often is used as an abbreviation for magnifying power.
    resolution
    1. In optics, the ability of a lens system to reproduce the points, lines and surfaces in an object as separate entities in the image. 2. The minimum adjustment increment effectively achievable by a positioning mechanism. 3. In image processing, the accuracy with which brightness, spatial parameters and frame rate are divided into discrete levels.
    Behnam RashidianCamera LinkcamerasCCDcharge domainCMOSConsumerFeaturesfill factorglobal shutterhot pixelsimage sensorImagingindustrialLight acceptance anglemachine visionMinimum achievable noise levelMinimum exposure timenoiseOEMPixel charge capacitypowerQsatresolutionSensors & DetectorsShutter leakagevoltage domain

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