Radiant energy – Infrared-to-visible imaging – Including detector array
Patent
1988-08-15
1990-07-10
Hannaher, Constantine
Radiant energy
Infrared-to-visible imaging
Including detector array
250330, 2503381, 250339, 250334, G02B 2610
Patent
active
049408950
ABSTRACT:
A thermal imager having an array of sprite detectors is provided with a novel means for reducing or eliminating lininess in the reproduced image. This means comprises a low pass optical filter which cuts out wavelengths above 11.5 microns and adjustable gain buffer amplifiers in the respective channels. It is found that with the use of the optical filter the gains of the buffer amplifiers may be preset, when setting up the apparatus, to eliminate lininess and it is not necessary to include complex and noisy circuitry for continuously monitoring the signals output by the detectors and then applying appropriate corrections to the individual channels during operation of the apparatus, as in the prior art.
REFERENCES:
patent: 3926835 (1975-12-01), Tucker
patent: 4023201 (1977-05-01), Faulkner
patent: 4099883 (1978-07-01), Berger
patent: 4271358 (1981-06-01), Schwarz
patent: 4421985 (1983-12-01), Billingsley
patent: 4482807 (1984-11-01), Blackburn et al.
patent: 4549079 (1985-10-01), Terasaka et al.
patent: 4692618 (1987-07-01), Klatt
patent: 4725733 (1988-02-01), Horman et al.
patent: 4788428 (1988-11-01), Metcalf et al.
Medical Thermography, C. H. Jones, (I.E.E.E. Proceedings, vol. 134, Feb., 1987, pp. 225-236).
Eisenberg J.
Hannaher Constantine
Rank Taylor Hobson
LandOfFree
Imaging apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Imaging apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1722568