Abstract:
A shield (10, 20) for limiting the radiation received by an array (15) of detectors (14) extends along the length of the detector array and comprises a pair of glass rods (10) mounted in a parallel relationship to each other and to the linear direction of the array (15) and forms an aperture along the length of the array so as to shield the elements of the array from electromagnetic radiation generated outside the field-of-view (FOV) of the detectors
Abstract:
A prism cold shield (10) adaptable to an infrared detector system (25,30) comprises a prism-shaped substrate (10) having an upper portion (12) partially coated with opaque material (15) and a lower portion (20) partially coated with opaque material (11) wherein windows (16) formed by the upper and lower coatings define the field of view for a plurality of infrared detectors (25) thereby cold shielding the detectors in the linear direction of the detector array.
Abstract:
A prism cold shield (10) adaptable to an infrared detector system (25,30) comprises a prism-shaped substrate (10) having an upper portion (12) partially coated with opaque material (15) and a lower portion (20) partially coated with opaque material (11) wherein windows (16) formed by the upper and lower coatings define the field of view for a plurality of infrared detectors (25) thereby cold shielding the detectors in the linear direction of the detector array.
Abstract:
A shield (10, 20) for limiting the radiation received by an array (15) of detectors (14) extends along the length of the detector array and comprises a pair of glass rods (10) mounted in a parallel relationship to each other and to the linear direction of the array (15) and forms an aperture along the length of the array so as to shield the elements of the array from electromagnetic radiation generated outside the field-of-view (FOV) of the detectors
Abstract:
In order to provide a uniform angular response and increased sensitivity over a wide field of view the present optical spectral filter (8) makes use of a piano-concave optical entrance element (10), one or more concavo-convex interior elements (12 to 16) and a piano-convex exit element (18) with the curvatures of all elements having the same center (50).