Architecture of the curvature CCD

Functional drawing of a unit cell   with an integration area made of 20 x 20 pixels, each 18 µm square. These unit cells form an imaging area   IA   of   360 x 360 µm for each subaperture. These pixels are binned by rows into the storage areas   SA   and   SB. The storage areas are small compared to the imaging area, being only one pixel wide.

CCD design of the curvature wavefront sensor array   The design consists of 80 unit cells. Ten unit cells are combined into a unit column. Each of these unit columns has an amplifier at the "bottom" end of the serial register. On the right side of the device is the tip/tilt sensor.