Accession Number:

AD0519010

Title:

Range Capability of an Infrared Vidicon Sensor

Descriptive Note:

Technical note

Corporate Author:

MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s):

Report Date:

1972-01-01

Pagination or Media Count:

30.0

Abstract:

The range capability of an infrared photoconductive vidicon is calculated as a function of background photon flux density. Range is maximized by adjusting a quantity which involves the target photoconductive gain, the quantum efficiency and the spectral bandwidth. The optimum value of the product of these three factors is obtained as a function of background flux. A limiting factor is the amount of charge that can be stored on the vidicon retina for the frame time. This is determined by the maximum breakdown field of retina material and the retina capacitance or dielectric constant. The resultant equations are evaluated for several practical situations. In the case of high backgrounds, range capability can be increased by enhancing the capacitance of the vidicon retina or alternatively by employing frame-to-frame signal integration.

Subject Categories:

  • Electrooptical and Optoelectronic Devices
  • Infrared Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE