Patent ID: 7534059

Claim:
An imaging apparatus, comprising: a three-dimensional substrate in which a partition wall having an opening at a central portion is farmed so as to cross an inner cavity; an optical filter that is fixed on a first flat surface of both surfaces of the partition wall so as to cover the opening; a semiconductor imaging device that is face-down mounted on a second flat surface of the partition wall with an imaging area facing the opening; and an optical system for forming images that is installed on a side of the optical filter in the inner cavity of the three-dimensional substrate, the opening of the partition wall being closed on both sides with the optical filter and the semiconductor imaging device so as to form a cavity, wherein an air passage for allowing communication between the cavity and an exterior of the three-dimensional substrate is formed as a groove on the first flat surface, the groove having a labyrinth structure that causes a variation of a flow rate of air passing through the air passage depending on a location along the air passage.