Q:What is Super HAD CCD camera?
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. 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.