Radiant energy – Infrared-to-visible imaging – Including detector array
Patent
1980-07-09
1982-04-06
Willis, Davis L.
Radiant energy
Infrared-to-visible imaging
Including detector array
250334, H01J 3149
Patent
active
043237762
ABSTRACT:
A scanning arrangement for an infra-red imaging device in which a column of I.R. detectors, and similarly a column of L.E.D.'s, scans a field broadside to produce a band of parallel line scans, a number of such band scans being provided to cover the field. Each band scan is performed by a respective mirror facet of a rotating polygonal drum, the facets being tilted at slightly different angles to provide the band displacement. Non-uniformity of the column of I.R. detectors or the L.E.D.'s or the interconnecting channels tends to produce the same pattern of non-uniformity within each band. This is overcome according to the invention by periodically tilting the drum by a random fraction of a band-width so that on successive occasions a particular element of the field is processed by different detector/L.E.D. channels.
REFERENCES:
patent: 3287559 (1966-11-01), Barnes
patent: 3941923 (1976-03-01), Wheeler
patent: 3949225 (1976-04-01), Aguilera
Bridges Clive A.
O'Donnell Patrick J.
The Marconi Company Limited
Willis Davis L.
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