| 摘要 |
<p>The invention concerns a cooled photodetector (80) comprising a table (50), sensors (66) mounted on the table, a shield (80) for avoiding parasitic radiation on the sensors, and at least a Joule-Thomson cooler (41, 42) for cooling the table and the shield. The table (50) and the Shield (80) are cooled by convection, the table (50) being perforated with orifices (55) for passage of a cooling flux communicating with an annular cavity (63) for putting the shield (80) in cold state.</p> |
