초록 ▼

A radiation sensor improved to increase the signal-to-noise ratio in the presence of a luminous background of high light intensity and to reduce the danger of direct detection of solar radiation. The sensor comprises optoelectric shutter means associated with the transparent slits of the optical mas

A radiation sensor improved to increase the signal-to-noise ratio in the presence of a luminous background of high light intensity and to reduce the danger of direct detection of solar radiation. The sensor comprises optoelectric shutter means associated with the transparent slits of the optical mask in order to pass substantially only the radiation emitted by the source to be located and received by the associated detector. The shutter can be provided from a plate of ferroelectric ceramic material so arranged as to form juxtaposed elements controlled selectively by a circuit as a function of the positioning of the source in the form of data processed by an ancillary computer.

대표청구항 ▼

A sensor system for location of radiation sources comprising: an optical mask for allowing penetration of radiation from the source solely along transparent zones of predetermined shape; detection means constituted by linear detecting arrays of photo-sensitive elements disposed in a detection plane

A sensor system for location of radiation sources comprising: an optical mask for allowing penetration of radiation from the source solely along transparent zones of predetermined shape; detection means constituted by linear detecting arrays of photo-sensitive elements disposed in a detection plane parallel to the mask for detection of the said source radiation transmitted through the said transparent zones; circuits for processing the signals detected by said linear arrays and producing control signals identifying the positions of elements sensitized by the radiation transmitted through the mask; ancillary computing means for computing the source location from the said position identifications; optoelectrical shutter means for dividing each of the transparent zones into juxtaposed regions and for opacifying said zones except the regions which substantially transmit light from the said radiation source to the said detection plane solely onto photosensitive elements of the said linear arrays, said optoelectrical shutter means comprising electrically controlled optical shutter elements which correspond to said regions respectively and selection means for selecting shutter elements corresponding to the said transmitting regions by means of said control signals produced by the said computing means.