It may mean that the ratio of the output power of an electric or optical circuit to the input power should be doubled.

Her optical circuits noted a seam running along the abdomen.

The optical circuits had taken quite a jarring; Derec wouldn?

You are very fuzzy in my optical circuits.

Right optical circuits not functioning; left out of adjustment.

SilverSide brought her wings in, let herself drop lower as her optical circuits switched to a telephoto setting.

Sheepishly he remembered he'd set his optical circuits for the bright control room.

She studied the optical circuits, pulling their codes out of memory cores, then started to look around.

There's a fault in the optical circuits of one of the machines.

Just some pressure on your optical circuit.