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Cooled Core
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cooled core, |
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Cooled Core |
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Cooled Thermal Systems
1. Basic Concept
The first is a cooled thermal imaging core. The imaging ***ector of the cooled infrared camera core is equipped with an integrated cryogenic refrigerator unit. This is a device that reduces the ***ector temperature to the cooling temperature.
In order to reduce the thermal noise below the level of the imaging signal at the scene, the drop in ***ector temperature is essential. The cooled infrared camera core is the most sensitive infrared thermal core that ***ects the slightest temperature difference between objects.
They operate in the spectral mid-wave infrared (MWIR) and long-wave infrared (LWIR) bands because of the high thermal contrast in these bands from a physics perspective.
Thermal contrast refers to a change in signal with respect to the target temperature. The higher the thermal contrast, the easier it is to ***ect scenes where the target temperature does not differ much from the background.
The imaging ***ectors provided by the uncooled infrared camera core do not require a low-temperature cooled infrared thermal image camera core. The common ***ector design is based on pyroelectric ***ectors, which are small vanadium oxide (or polysilicon) resistors with large temperature measurement coefficients, large surface area, low heat capacity, and good thermal insulation.
Changes in the temperature of the scene cause the temperature of the infrared ***ector to change, which is converted into an electrical signal and processed to produce an image. Uncooled ***ectors are used in the long-wave infrared (LWIR) band, and targets with similar ground temperatures emit the most infrared heat in that band.
Co***red to cooled ***ectors, uncooled ***ectors have fewer manufacturing steps, higher yields, and lower vacuum packaging costs. Moreover, the uncooled infrared camera core does not require extremely expensive cryocooler equipment. |
| Company: |
Zhejiang ULIRVISION Technology Co., Ltd.
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| Contact: |
Mandy fang |
| Address: |
17F Block C,Sunwave Building,581 Huoju Avenue, Binjiang District,Hangzhou 310052,Zhejiang,China |
| Postcode: |
310025 |
| Tel: |
87209887 |
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