Imager optical systems and methods
AssigneeTeledyne FLIR Commercial Systems, Inc.
InventorsRoyce Duane Clay, Jr., Devin T. Walsh, Darren M. Haley, William E. Williamson
Life of this patent
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Abstract
Techniques are disclosed for optical imager devices, systems, and methods. In one example, an imaging system includes a focal plane array (FPA) and a light shield. The FPA includes a detector array configured to detect a first portion of electromagnetic radiation and generate a detector signal based on the first portion. The FPA further includes a readout circuit coupled to the detector array and configured to receive the detector signal. The light shield is coupled to the FPA and configured to block a second portion of the electromagnetic radiation. Related devices and methods are also provided.
Claims20
An imaging system comprising:
- a focal plane array (FPA) comprising:
- a detector array configured to detect a first portion of electromagnetic radiation and generate a detector signal based on the first portion;
- and
- a readout circuit coupled to the detector array and configured to receive the detector signal;
- and
- a first light shield coupled to the FPA and configured to block a second portion of the electromagnetic radiation, wherein the first light shield comprises:
- a leg configured to couple to the FPA;
- and
- a wall extending from the leg.
An imaging system comprising:
- a focal plane array (FPA) comprising:
- a detector array configured to detect a first portion of electromagnetic radiation and generate a detector signal based on the first portion;
- and
- a readout circuit coupled to the detector array and configured to receive the detector signal;
- a first light shield coupled to the FPA and configured to block a second portion of the electromagnetic radiation, wherein the first light shield forms a continuous perimeter around the detector array and is configured to block the second portion by absorbing the second portion, and wherein a waveband associated with the first portion overlaps at least a portion of a waveband associated with the second portion;
- a vacuum package housing, wherein the FPA and the first light shield are enclosed in the vacuum package housing;
- and
- a second light shield enclosed in the vacuum package housing and disposed over a portion of the detector array and a portion of the first light shield, wherein the second light shield is configured to block a third portion of the electromagnetic radiation.
A method comprising:
- detecting, by a focal plane array that comprises a detector array and a readout circuit, a first portion of electromagnetic radiation;
- generating, by the focal plane array, a detector signal based on the first portion;
- and
- blocking, by a first light shield coupled to the focal plane array, a second portion of the electromagnetic radiation from the detector array by absorbing the second portion, wherein the first light shield comprises:
- a leg in contact with the readout circuit;
- and
- a wall extending from the leg.
Dependencies are inferred from the claim text.