FIELD: physics.
SUBSTANCE: detected radiation is sent to a photodetector matrix and picked up through a screen which forms a thermal image of the object from which the radiation is detected. The photodetector matrix is cooled to cryogenic temperatures. The screen is heated to temperature which causes an extra stream of quanta from the screen to the photodetector matrix and provides high useful/noise ratio of the photodetector matrix relative the last value in the absence of additional heating, particularly to a maximum value of the useful signal/noise ratio, which corresponds to temperature between 40 and 120 K.
EFFECT: higher quality of the image obtained in video systems and possibility of detecting radiation in a spectral range different from the sensitivity range of the photodetector matrix.
4 cl, 5 dwg, 7 ex
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR DETECTION OF HEAT RADIATION | 1999 |
|
RU2148802C1 |
| APPARATUS FOR RECORDING IMAGES IN WIDE ILLUMINATION RANGE | 2013 |
|
RU2535299C1 |
| METHOD OF COMPENSATING FOR SIGNAL IRREGULARITY OF PHOTOSENSITIVE ELEMENTS OF MULTIELEMENT PHOTODETECTOR | 2010 |
|
RU2449491C1 |
| MATRIX THERMAL IMAGING UNIT | 1998 |
|
RU2152138C1 |
| PHOTOSENSITIVE CELL ARRAY | 2014 |
|
RU2571434C1 |
| DEVICE RECORDING THERMAL RADIATION | 2002 |
|
RU2231759C1 |
| METHOD FOR LASER DIRECTION FINDING AND DEVICE WHICH IMPLEMENTS SAID METHOD | 1999 |
|
RU2152056C1 |
| LASER LOCATION SYSTEM | 2013 |
|
RU2544305C1 |
| LEVEL INSTALLATION ASSEMBLY AND SPECTRAL COMPOSITION OF DETECTED RADIATION IN IR MATRIX PHOTODETECTOR | 2014 |
|
RU2601384C2 |
| METHOD OF FORMING PATTERNED SCINTILLATOR ON SURFACE OF PIXELATED PHOTODETECTOR (VERSIONS) AND SCINTILLATION DETECTOR MADE USING SAID METHOD (VERSIONS) | 2013 |
|
RU2532645C1 |
