Abstract: A method of restoring low spatial frequency spectral information to an image using a Fizeau Fourier transform spectrometer (“FFTS”) system is provided. Portions of a wavefront collected by the FFTS are interfered. The interference patterns are Fourier transformed to generate spectral images. A region of the image is identified, for which spectral information is predetermined. Object estimates are generated, each of which corresponds to a spectral image. Each object estimate is iteratively adjusted applying a system spectral optical transfer function (“SOTF”) to it and modifying it until a match is made with the corresponding spectral image. Each adjusted object estimate is then iteratively restored by applying a system optical transfer function (“OTF”) to it and then applying a DC bias to it until a match is made between the identified region in the sum of the object estimates and the identified region of a measured panchromatic object image.

Abstract: A Fourier Transform Spectrometer (“FTS”) system includes a Fizeau FTS having a plurality of sub-collecting elements, adjacent ones of which are separated by a gap distance, and at least one of which has an adjustable optical path. The FTS system further includes a Michelson FTS having an adjustable optical path. The FTS system further includes one or more processors configured to select spectral data collected by the Fizeau FTS corresponding to spatial frequencies for which the Fizeau FTS has a modulation transfer function (“MTF”) value above a first threshold level, to select spectral data collected by the Michelson FTS corresponding to spatial frequencies for which the Michelson FTS has a MTF value above a second threshold level, and to combine the selected spectral data from the Fizeau FTS with the selected spectral data from the Michelson FTS.

Abstract: The invention is a support device that cradles and supports the head of an individual while distributing pressure acting on the head. The invention may be used in conjunction with a spine board or other cervical immobilization device to maintain the cervical spine in neutral alignment and assist in immobilization of the individual.

Abstract: Detecting the presence of a target material in a scene by using a multi-aperture interferometer system having a plurality of apertures at least one of which has an adjustable optical path length, by adjusting the aperture(s) to obtain a predetermined optical path length difference among the apertures, the predetermined optical path length difference being based on a source laser wavelength and a target material wavelength, illuminating the scene with the source laser, capturing a spectral data set corresponding to an interference pattern generated in the multi-aperture interferometer system for an illuminated point source in the scene, the spectral data set containing spatially distributed spectral data, and determining whether the target material is present at the illuminated point source based on a presence of spectral data in at least one side lobe of the spectral data set.

Abstract: A femur traction device includes a brace adapted to be secured to a patient's leg, with one end secured above a break in the leg and a hitch end extending below the foot and providing a hitch for a tensioning harness. The tensioning harness is secured between the hitch and the patient's ankle, and straps of the harness may be lengthened or shortened to increase or decrease tension on the leg. The tensioning harness advantageously does not rely on hook-and-loop type fastening means, is color coded to facilitate proper use, and stores in a pouch that forms part of and is secured to the remainder of the tensioning harness.

Abstract: A spinal restraint device includes a body member with a head support portion, a neck support portion, and a back support portion. Left and right body wrap portions extend from the back support portion, and left and right head wrap portions extend from the neck support portion, and these portions respectively wrap around an individual's torso and head and are secured to each other to secure the torso and head against movement. A chest flap section is provided in the left and right body wrap portions for folding away from the individual's chest, for comfort or for better access to the chest area. Declaration buckles and straps are also provided for securing the spinal restraint device (and individual) to a support board or stretcher. Other benefits are realized from the positioning of securing straps and leg straps and the dimensions of the body wrap portions.

Abstract: Embodiments of the present invention are directed to a nuller that is used to significantly reduce or eliminate a monochromatic radiation signal within a polychromatic object field. In one embodiment, a method of nulling a coherent light from a light beam having the coherent light and an incoherent light comprises collimating the light beam having the coherent light and the incoherent light, and destructively interfering the coherent light to null the coherent light with no destructive interference of the incoherent light so as to project the incoherent light without the coherent light.

Abstract: A wavefront sensor for use in a staring imaging system for generating focused and defocused images of an object scene that is being imaged by the imaging system from a single input optical beam impinged thereon. The wavefront sensor includes a beamsplitter for splitting an optical input beam into identical first and second half beam portions and for focusing the first and second half beam portions onto respective first and second focal planes. A phase plate is interposed between the beamsplitter and the second focal plane for inducing a known focus error in the second half beam portion. A photodetector is also provided and is effective to form a best focused image and a slightly out of focus image at the first and second focal planes, respectively. The focused and defocused images are combinable using phase diversity techniques to estimate wavefront aberrations present in the imaging system.

Abstract: A wavefront sensor for use in a scanning imaging system for generating focused and defocused images of an object scene that is being imaged by the imaging system from a single input optical beam impinged thereon. The two images are combinable using phase diversity techniques for calculating the wavefront aberrations that are present in the imaging system. The wavefront sensor includes a first linear photodetector array for forming a best focused image of an object scene as an incoming optical beam scans across the first linear photodetector array. The wavefront sensor further includes a second photodetector array disposed parallel to the first photodetector array. The second photodetector array is provided with a compensator plate for inducing a known focus error in the image that is formed on the second photodetector array as the input optical scans across the second photodetector array. In one embodiment, the two photodetector arrays are configured as CCD arrays on a single substrate.

Abstract: A collapsible femur traction device utilizes a segmented pole with an internal elastic cord running through the segments which will hold any desired number of the segments together to establish different effective lengths of the pole, so that the traction device can be used on small children as well as large adults, and is also collapsible into a very compact form. At the upper end of the pole, the segments are pulled apart and bent over double to achieve the proper length, with the adjacent ends of the pole inserted into a double socket which is attached to a strap on the upper thigh of the broken leg. A tensionable harness around the ankle applied traction to the leg by pulling it toward the opposite end of the pole, which extends beyond the foot.

Abstract: A spinal restraint device in the form of a body member having a head support portion, a neck support portion, and a back support portion. The back support portion and the neck support portion have a body wrap-around arm portion extending laterally from each of its sides. The body member has a front sheet-like layer of flexible material, a middle sheet-like layer of flexible material, and a rear sheet-like layer of flexible material. Laterally spaced longitudinal rows of stitching secure the front, middle, and rear sheet-like layers of flexible material together to form a plurality of longitudinal sleeves between the front sheet-like layer of flexible material and the middle sheet-like layer of flexible material. The longitudinal sleeves extend substantially across the entire width of the body member. Stiffener members are located within the longitudinal sleeves.