Infrared Imaging Abstracts for 1996
The following Abstracts of journal literature and patent specifications are taken, with kind permission, from Imaging Abstracts, published by Pira International on behalf of The Royal Photographic Society of Great Britain.
The abstracts are Copyright © 1997-2003 Pira International on behalf of the RPS. Original documents are in English unless otherwise stated. For further information on Imaging Abstracts, which is available on paper, online and on CD-ROM, contact Pira International or email email@example.com.
Patent: Infrared Sensitive Material
Allen R M, Chu P K, Lee J W, McGowan D A, Mischke M R (Polaroid Corp)
An infrared sensitive medium contains a squarylium dye which generates heat in an imagewise manner when exposed appropriately to infrared radiation. The dye is substituted on the 1-carbon atom by an alkyl sulphonyl group, on the 2- and 4-carbon atoms by =C(alkyl)-Q, where Q is a pyrylium or other heterocyclic nucleus, and on the 3-carbon atom by a keto group.
Coherent Infrared Imaging Camera (CIRIC)
Hutchinson D P, Simpson M L, Bennett C A, Richards R K, Emery M S
(Oak Ridge National Laboratory)
The principles of a coherent infrared imaging camera are described. They make use of wide-bandwidth HgCdTe and GaAs quantum well photodetectors, and also employ monolithic microwave integrated circuit technology, with the result that in addition to the thermal data relating to a scene, which the usual types of IR cameras can provide, the CIRIC instruments can offer both spectral and range information. Some of their practical applications are discussed. DE95014595GAR
Infrared Imaging Technology
Anon (NERAC Inc)
The INSPEC Database has supplied a bibliography of references to the techniques and applications of infrared imaging in biomedical measurement. The major topics of interest are IR thermographic and thermovision diagnosis, automatic analysis of IR images, automated IR diagnosis of images, and thermographic analysis of breast cancer. PB96-853247GAR.
Patent: Infrared Imaging Materials
Robillard J J (University of Texas)
An infrared sensitive material is described which contains a polymeric semiconductor compound which absorbs in the infrared region of the spectrum; this compound is associated with a spiropyran which absorbs in the visible region of the spectrum, so that when the material is exposed in use to ultraviolet radiation, it produces a visible image.
G301: The Flying Falcon Geological Remote Sensing Experiment
Anon (Bowling Green State University)
The Flying Falcon is the name given to the equipment scheduled for launching on the STS-77 Space Shuttle in April 1996, for the mapping of methane plumes, and the detection of precursors of volcanoes or earthquakes. It will employ a new type of infrared imager, which is a ferro-electric infra-red return beam vidicon camera; it is sensitive to the whole of the spectral range from 2.0 to 50 µm.
Yerkes Observatory 6-channel Far Infrared Camera for the Kuiper Airborne Observatory
Anon (Chicago University)
A two-dimensional 60-detector array of helium-cooled silicon bolometers has been installed in the Yerkes Observatory far infrared camera, for incorporation in the Kuiper Airborne observatory. They permit broadband imaging over the range of 40 to 240 µm, and four interchangeable filters are available, with peak wavelengths at 60, 100, 160 and 200 µm. The signals pass through junction field-effect transistor source-follower amplifiers, warm preamplifiers and digital signal processors, and the instrument has already been used to image a wide variety of galactic and extra-galactic far infrared sources.
Kuiper Widefield Infrared Camera
Anon (Cornell University)
The Kuiper widefield infrared camera includes a wide-field imaging spectrometer, covering an area of 5.8 arcmin square; it is intended for use in the Kuiper Airborne Observatory, to produce photographs within the wavelength range of 18 to 44 µm. It can function in two resolution modes - low resolution, 35-200, and high resolution, 2,000 to 10,000. It has produced satisfactory images on its first test flights. N96-13701/3.
CCD Offset Guider for the Kuiper Airborne Observatory (KAO)
Anon (NASA Ames Research Center)
A focal plane offset guider has been designed for inclusion in the KAO; it includes a CCD camera which is interfaced with a personal computer. The camera uses a Thomson 576 x 384 pixel CCD chip, and is operated in the transfer mode; it yields a field of view approx. 12 ft. in diameter. N96-13708/8. See also: ibid, 96, 8, 02012.
Mid-infrared Array Camera on the Kuiper Airborne Observatory (KAO)
Anon (NASA Ames Research Center)
A mid-infrared array camera has been designed, to cover the mid-infrared wavelength range of 4 to 8 µm. It includes four filters, which define its bandpass, and has already been used on several flights on the KAO. Its current performance is considered inferior to expectations, and means of improving it are being explored. N96-13711/2. See also: ibid, 96, 8, 02012.
Anon (NERAC Inc)
A series of patent specifications has been selected from the U.S. Patent Bibliographic File, and references to them are incorporated in a bibliography. The topics covered include the techniques and equipment employed in making and using infrared images, the production and calibration of imaging systems, sensing, storage of images, and the use of such images in examination of the eye, and for aerial reconnaissance. PB96-859590GAR.
Qualitative and Quantitative Imaging in Microgravity Combustion
Anon (NASA Cleveland)
The imaging techniques employed in a study of combustion under conditions of microgravity have been summarised. Their wide variety includes high-speed photography, infrared photography, laser and rainbow schlieren photography, as well as techniques involving video, fluorescence, soot volume fraction and soot temperature imaging. N96-15597/3GAR.
Anon (NERAC Inc)
The INSPEC Database has been used to provide a bibliography of citations concerning the applications of infrared cameras. The topics covered include deformation studies, calorimetric measurements, temperature measurements, the heating effects of radio frequency applicators, and accelerated environmental stress screening. PB96-862693GAR.
Relative Spectral Responsivity of Two AGEMA Infrared Scanning Cameras: Models 900 SW/ST and 900 LW/ST
Zeisse C R (Naval Command Center San Diego USA)
The spectral sensitivity of two infrared scanning cameras has been determined; the methods employed are described, and the results conformed with those associated with the sensitive materials employed for the fabrication of the IR detector - indium antimonide for the 900 SW/ST camera, and mercury cadmium telluride for the 900 LW/ST. N96-18515/2GAR.
Anon (NERAC Inc)
Infrared cameras and their components provide the subject of a bibliography relating to patent specifications extracted from the U. S. Patent Bibliographic File. The major topics covered include the design and production of IR inspection and monitoring devices, and their applications in thermographic systems, night vision, distance measurement, and medical diagnosis. PB96-867411GAR.
Patent: Infrared Fundus Camera
Yoneya S, Takasu M (Topcon KK)
A fundus camera is described which includes a means for illuminating the retina of a patient with a beam of infrared light; two barrier filters are available for insertion into the reflected beam which passes from the retina to the infrared camera employed. Both filters are transparent to IR light, but they possess different wavelength ranges, and photographs are taken through either of the two filters.
Halide Photoemulsion-based Infrared Photographic System with a Large Dynamic Range
Tulanov V T, Siyabekov K B (Tashkent State University Uzbekistan)
An attempt has been made to determine the optimum temperature of usage of an infrared photographic material, in order to attain the maximum dynamic range. An expression was derived relating the obtainable dynamic range, the gamma produced, the minimum temperature detectable by a density film change, the initial temperature of the film, and the critical temperature at which film damage became significant.
InfraCAM (TM): a Hand-held Commercial Infrared Camera Modified for Spaceborne Applications
Manitakos D, Jones J, Melikian S (NASA Cleveland USA)
The InfraCAM hand-held IR camera has been selected for use in the DARTFire experiment (Diffusive and Radiative Transport in Fires), which is to be space borne. A solid fuel is to be ignited in a low gravity environment, and the characteristics of combustion are to be recorded using both visible and infrared radiation. The emission from the PMMA constituent will be determined by the IR camera, and the other products will be identified by the recordings in six narrow spectral bands. N96-25066/7GAR.
Far-infrared Streak Camera
Lankhuijzen G M, Noordam L D (FOM Institute for Atomic and Molecular Physics Amsterdam)
A streak camera has been devised which would operate over the wide infrared spectral range of 1 to 100 µm. Instead of creating the requisite electron pulses by using a conventional photocathode, a component containing gas phase atoms in a highly excited Rydberg state is employed. A prototype instrument has been constructed after this manner, and preliminary tests have been satisfactory. 8 refs.
The IR Photographic System with Large Dynamic Range using Silver Halide Photographic Emulsions
Tulanov V T, Siyabekov K B (State University Tashkent Uzbekistan)
It has been found that the most suitable temperature for the registration of IR photographic images lies between 175 and 280 K; at this reduced temperature, an increase from 200 to 500 in the dynamic range of the process is experienced.
Response of Standard Silver Halide Emulsions to Mid-infrared Radiation
Meza J M, Calixto S (Centro de Investigaciones en Optica Lein
An investigation of the response of commercially available silver halide photographic emulsions to mid-infrared radiation (wavelength ca. 10.6 µm), has shown that they can provide an adequate means of recording images, without the need of making use of visible light as a co-activator. Some specific characteristics of the emulsions employed are presented and discussed.
ISOCAM in Flight
Cesarsky C J, Abergel A, Agnese P, Altieri B, Augueres J L (CEA
ISOCAM is the camera on board the Infrared Space Observatory; it has been designed to take pictures of the sky using two wavelength channels, 2.5 to 5.5 µm, and 4 to 18 µm. Some details are given of the construction of the instrument, its mode of operation, and some preliminary data on its performance. 15 refs.