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 Home > Support > FAQ > What is Super HAD CCD camera?

 Title |  What is Super HAD CCD camera?
 Author |  Admin   Date |  Fri Dec 12, 2008 11:32 am

Super HAD CCD is a trademark of Sony Corporation. The Super HAD CCD is a version of Sony's high performance CCD HAD (Hole-Accumulation Diode) sensor with sharply improved sensitivity by the incorporation of a new semiconductor technology developed by Sony Corporation.
Our various KT&C cameras come with SONY SUPER HAD CCD!



Efforts for more pixels and smaller size for CCD have resulted in a smaller aperture area of sensor, presenting the problem of lower sensitivity. To improve this, a lens has been provided on the top of the sensor for focusing, which increases the virtual aperture area of the sensor for higher sensitivity. That is what is called the on-chip micro-lens. Sony, the first to adopt it for the CCD image sensor, has thus successfully achieved higher sensitivity.
This "Super HAD CCD" optimizes the shape of on-chip micro-lenses in order to minimize the invalid area between micro-lenses on each pixel, which thereby minimizes the lost incident light. By doing so our product has been improved the sensitivity per unit of area, despite reducing the unit pixels.

Comparison of Conventional CCD and Super HAD CCD Sensor Structure

On-chip Micro-lens of
Conventional CCD
Conventional CCD Sensor Structure



On-chip Micro-lens of
Super HAD CCD
Super HAD CCD Sensor
Structure

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