Miniaturisation tech company company Tessera said it has paid $15 million in cash to buy the Siimpel Corporation.

Siimpel - simple, geddit? - develops and makes micro electro mechanical systems (MEMS) for cameras used in mobile gizmos.

Tessera licences and makes miniatureisation tech through chip scale, 3D and wafer level packaging as well as customised micro-optic lenses right down to integrated sub-assemblies.

Tessera CEO Henry Nothhaft said that Siimpel's auto focus and shutter products complemented its own EDOF technology.  It will use that technology to offer higher megapixel resolutions that offer auto focus.

Siimpel is based in Arcadia with 42 employees and a patent portfolio that numbers 65.