An image pickup apparatus which permits reduction of the thickness of a mechanism for holding an optical filter component and prevents failure of the optical filter component. An array of trim capacitors is connected to the delay chain. The emissive material emits light having a second optical characteristic when illuminated with light having the first optical characteristic. When the functional module is operably positioned in the electronic equipment enclosure, the edges of the double wide card are supported by the end card guide and the cutout engages the middle card guide so that the double-wide card straddles the middle card guide and is supported thereby. The method further includes providing a first light-emitting layer including as a main component, a second hole-transporting material having a second glass transition temperature Tg2, such light-emitting layer disposed between the hole transporting layer and the cathode and in contact with the hole-transporting layer, and wherein Tg1 is greater than Tg2.