The light collectors are a simplified version of the Winston cones. They are used to recuperate the light falling on the border of each pixel outside the sensitive region of the photocathode.
The cross section of the light collectors is triangular. They are realized by an assembly of stars with three arms at 120 degrees (mercedes) which are made of plastic material and covered by aluminized mylar.

Six mercedes positioned in order to surround a pixel (top view).

The centers of the mercedes are placed on the vertices of the hexagonal pixel.

Lateral view of the six mercedes

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