Patent ID: 7470894

Claim:
A spectrally tunable detector assembly for receiving incoming light along an optical axis, comprising: a first substrate having a number of bond pads and a tunable bandpass filter; a second substrate having a number of bond pads and a detector; a package having a cavity and a number of external terminals; and the first substrate and the second substrate both mounted in the cavity of the package along the optical axis with the first substrate positioned upstream of the second substrate, with selected bond pads of the first substrate and/or selected bond pads of the second substrate electrically connected to selected terminals of the package; wherein the tunable bandpass filter is provided on or adjacent to a first side of the first substrate, and the detector is provided on or adjacent a first side of the second substrate, wherein the first side of the first substrate faces away from the first side of the second substrate along the optical axis when the first substrate and the second substrate are mounted in the cavity of the package.