Industrial

Thermoelectric Cooling for CMOS Sensors

Introduction

For nearly 50 years CCD (charge-coupled device) sensors and CMOS (complementary metal-oxide semiconductor) sensors have competed on cost and performance in a wide range of digital imaging applications. Peltier coolers (thermoelectric coolers) have cooled both technologies when the requirement demanded high-resolution images. Design engineers opted to use CCD’s for astrophotography, super-resolution microscopy, x-ray crystallography, and spectrophotometric assays. On the other hand, CMOS sensors made inexpensive digital photography a reality.




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Cooling for CMOS Sensors

The ability to rapidly provide high quality images makes CMOS Sensors useful in machine vision & learning applications as well as object detection & recognition. Examples of these applications are machine vision for robots & drones, optical character recognition, barcode readers, scanners, astronomical and satellite photography and the enhancement of radar images for weather forecasting. CMOS Sensors also enable capturing of high-resolution images in light spectrums that are not visible to the human eye, which is particularly useful in high-end scientific cameras.

AA-040-24-22 Air-to-Air

The AA-040-24-22 is an Air-to-Air Thermoelectric Assembly (TEA) that uses impingement flow to transfer heat. It offers dependable, compact performance by cooling objects via convection. Heat is absorbed and dissipated through high density heat exchangers equipped with air ducted shrouds and brand name fans. The heat pumping action is created by thermoelectric modules, which are custom designed to achieve a high coefficient of performance (COP). It has a maximum Qc of 41 Watts when ΔT = 0 and a maximum ΔT of 43 °C at Qc = 0.


Qc Max:


AA-040-12-22 Air-to-Air

The AA-040-12-22 is an Air-to-Air Thermoelectric Assembly (TEA) that uses impingement flow to transfer heat. It offers dependable, compact performance by cooling objects via convection. Heat is absorbed and dissipated through high density heat exchangers equipped with air ducted shrouds and brand name fans. The heat pumping action is created by thermoelectric modules, which are custom designed to achieve a high coefficient of performance (COP). It has a maximum Qc of 41 Watts when ΔT = 0 and a maximum ΔT of 43 °C at Qc = 0.


Qc Max:


AA-034-12-22 Air-to-Air

The AA-034-12-22 is an Air-to-Air Thermoelectric Assembly (TEA) that uses impingement flow to transfer heat. It offers dependable, compact performance by cooling objects via convection. Heat is absorbed and dissipated through high density heat exchangers equipped with air ducted shrouds and brand name fans. The heat pumping action is created by thermoelectric modules, which are custom designed to achieve a high coefficient of performance (COP). It has a maximum Qc of 33 Watts when ΔT = 0 and a maximum ΔT of 35 °C at Qc = 0.


Qc Max:


Semiconductor Metrology Equipment

The key to cost effective production has been through implementation of automated metrology systems. Traditionally, metrology refers to measurement of any type of physical dimensions. In the film manufacturing industry automated metrology systems measure parameters such as thickness, refractive index, resistivity and stress of the thin films. However, these systems are not only used to track the physical properties of the material, but also to feed this information back into the manufacturing process.