摘要:
A wide field-of-view infrared optical imaging system with extended spectral coverage into the 1.0 to 2.5 μm wavelength range. In one example, an optical imaging system includes an imaging detector sensitive to light in a wavelength range of at least 1.0 μm to 5.0 μm, and a plurality of lenses optically coupled together and configured to focus incoming light onto the imaging detector, the plurality of lenses each comprised of a material that is transparent to the light in the wavelength range of at least 1.0 μm to 5.0 μm, wherein a pupil of the optical imaging system is located external to the plurality of lenses between the plurality of lenses and the imaging detector.
摘要:
A calibration source IR assembly (100) for an IR detector (102) includes an IR focal plane (116). The calibration assembly (100) includes a rotatable spectral filter wheel (118) optically coupled to an IR focal plane (116) of the detector (102), the filter wheel (118) having a plurality of areas each of at least a minimum size. At least one area being a calibration area (120), the calibration area (120) including: a substrate (122) having a first side (124) facing the IR focal plane (116) and a second side (126) opposite from the first side (124); a light transmitting edge section (128) disposed between the first side (124) and the second side (126); and at least one light redirector (130) disposed at least partially within the substrate (122), the light redirector (130) structured and arranged to receive light from the edge (128) and to redirect the light out the first side (124). A light source (132) optically coupled to the edge section (128). An IR detector (102) including the improvement of such a calibration source (120) IR assembly (100) is also provided.
摘要:
A system and a method of designing and mechanical packaging of a fully integrated multifunctional multispectral miniaturized sigh assembly (10) to allow its use on hand-held man-portable units. All the subsystems of the compact sight assembly, namely, a direct view day subsystem, a CCD-based visible TV subsystem, a staring IR night subsystem, an eyesafe laser rangefinding subsystem and a display subsystem for viewing the output of the TV or IR subsystem, are aligned and use a single telescope (12) and eyepiece (42) in order to decrease the size of the assembly. In addition, each sight assembly subsystem operates in a first and a second field of view, preferably in a narrow field of view and a wide field of view, with wavelengths from 0.45 mu m to 12 mu m, thereby creating a very small but highly powerful sight assembly.
摘要:
A five-mirror all-reflective afocal anastigmat. In one example, a five mirror afocal anastigmat includes five mirrors arranged to sequentially reflect from one another electromagnetic radiation received via a system entrance pupil to produce a collimated output beam of the electromagnetic radiation at a system exit pupil, the five mirrors consisting of three positive-powered mirrors and two negative-powered mirrors, wherein optical powers of the five mirrors are balanced to achieve a flat field condition at the system exit pupil.
摘要:
Millimeter-wave optical imaging systems and methods. In one example, a mm-wave optical imaging system includes a mm-wave imaging detector located at a focal plane of the optical imaging system, an immersion lens directly coupled to the imaging detector and configured to focus the electromagnetic radiation onto the imaging detector, the immersion lens having a curved first surface and an opposing planar second surface, wherein the focal plane is located on the planar second surface and the imaging detector is directly coupled to the planar second surface, a positive power primary mirror configured to reflect the electromagnetic radiation towards the immersion lens, and a Schmidt aspheric corrector configured to receive and direct the electromagnetic radiation towards the primary mirror, wherein the system aperture stop is located on the Schmidt aspheric corrector.
摘要:
An apparatus and method for effecting and changing optical distortions is disclosed in which the apparatus includes a beam imaging apparatus including a first deformable mirror(110), a second deformable mirror (120), and a beam-steering apparatus. The beam-steering apparatus includes a plurality of planar tiltable mirrors (150,155,160) arranged to define a radiation beam path therebetween, wherein the plurality of planar tiltable mirrors comprises at least three tiltable mirrors. A mirror drive system is configured to tilt each respective planar mirror (150,155,160) about its respective axis of rotation or axes of rotation and a controller is configured to control deformation of a reflective surface of the first and the second deformable mirrors.
摘要:
A calibration source IR assembly (100) for an IR detector (102) includes an IR focal plane (116). The calibration assembly (100) includes a rotatable spectral filter wheel (118) optically coupled to an IR focal plane (116) of the detector (102), the filter wheel (118) having a plurality of areas each of at least a minimum size. At least one area being a calibration area (120), the calibration area (120) including: a substrate (122) having a first side (124) facing the IR focal plane (116) and a second side (126) opposite from the first side (124); a light transmitting edge section (128) disposed between the first side (124) and the second side (126); and at least one light redirector (130) disposed at least partially within the substrate (122), the light redirector (130) structured and arranged to receive light from the edge (128) and to redirect the light out the first side (124). A light source (132) optically coupled to the edge section (128). An IR detector (102) including the improvement of such a calibration source (120) IR assembly (100) is also provided.