What is a Super HAD CCD camera?
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 cameras come with SONY SUPER HAD CCD!
Efforts for more pixels and smaller CCD size 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.
The Super HAD CCD sensor 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. Doing this improves the sensitivity per unit of area in our products, 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|