Infrared photosensitive tube with wide temperature resistance

The invention discloses an infrared photosensitive tube with wide temperature resistance, belongs to the technical field of infrared photosensitive tubes, and aims to solve the problems that an existing common infrared photosensitive tube cannot be applied to a higher environment temperature, and a semiconductor refrigeration type infrared photosensitive tube is large in packaging size, high in power consumption and poor in high temperature resistance. The invention relates to an LED (light-emitting diode) light source, which comprises a packaging shell, a miniature refrigeration sheet and a photosensitive chip, the heating end of the miniature refrigeration sheet is welded with the inner bottom wall of the packaging shell, the photosensitive chip is adhered to the refrigeration end face of the miniature refrigeration sheet, a plurality of welding pins are arranged on the packaging shell in a penetrating manner, and the photosensitive chip is connected with the welding pins through electrode wires. The miniat