Aspects of the present invention are directed to the use of optical gain structures that include alternating layers of gain medium and transparent heat conductors in which the gain medium itself functions as a correction optic. The attachment structure includes resilient attachment strips secured to the rear of the skin and extending along upright edges thereof. Specifically, if both of the two blocks are coded by IC mode or neither of the two blocks are coded by IC mode, bS is set as such a value that filtering is unnecessary. The maximum standby current of each device is specified, and input power is limited to its steady state maximum during start-up. A method for manufacturing such a matrix type PE actuator is also disclosed.