Patent ID: 7127906

Claim:
Cooled photosensitive cell ( 1 ) comprising a table ( 2 ), at least one sensor ( 3 ) which is fitted on the table ( 2 ) and is connected to electrical connection tracks ( 30 ), a screen ( 10 ) which is fitted on the table ( 2 ) in order to prevent parasitic radiation on the sensor ( 3 ), at least one Joule-Thomson cooler ( 4 ) in order to cool the table ( 2 ) and the screen ( 10 ) with a cooling flow, wherein the table ( 2 ) and the screen ( 10 ) are cooled by convection by being subjected directly to the cooling flow of the cooler ( 4 ), the table ( 2 ) being provided with apertures ( 6 , 7 ) for passage of the cooling flow communicating with a cavity ( 14 ) for cooling of the screen ( 10 ), wherein the table ( 2 ) comprises on its periphery a shoulder ( 24 ), having a thickness, on which the screen ( 10 ) is fitted, the shoulder ( 24 ) being raised relative to the table ( 2 ) by a height which is greater than the electrical connection tracks ( 30 ), a passage ( 22 , 23 ) for the electrical connection circuits ( 30 ) being provided, in the thickness of the shoulder ( 24 ), between the table ( 2 ) and the screen ( 10 ), such that the electrical connection circuits ( 30 ) lay upon, and not within, the table.