Chemical & Biological Analysis

One interesting biomedical application is SWIR fluorescence imaging for deep tissue in-vivo imaging. This technique is used in cancer research and offers a resolution of a few millimeters. After optical excitation, the fluorescence of organic dyes, fluorescent proteins or quantum dots are detectable in the low-loss window for biological tissue (1000 – 1700 nm).

 

Dental infrared imaging
SWIR cameras in an OCT (optical coherence tomography) setup are used in dental applications. For example, they can be used to identify caries in an early stage by seeing inside teeth and gums (up to a few mm).

 

Pharmaceutical infrared imaging
SWIR cameras are commonly used in hyperspectral imaging systems for pharmaceutical applications. For example, similar tablets of generic drug compounds such as aspirin, acetaminophen, vitamin C and vitamin D can be inspected. Based on their spectral signatures in the SWIR band, the presence (or absence), or spectral homogeneity of multiple compounds are detectable. This technique finds application in quality control, or detection of counterfeit medicines.

OCT

Optical coherence tomography (OCT) is a non-invasive imaging method that is very similar to ultrasound probing techniques. Instead of sound, it uses low-coherence light to provide cross-sectional images of tissue structure in high resolution, into the millimeter regime.

 

With longer wavelengths in the IR spectrum and the availability of InGaAs detectors and cameras, OCT scanners based on SWIR wavelengths are able to penetrate much deeper into human tissue compared to those of visible wavelengths.

 

Today, OCT is predominantly used in the medical sector, where it has become a standard non-invasive biomedical analysis technique yielding a detail-rich cross-sectional image of living tissue. It is commonly used in eye scans to examine the retina, revealing its distinctive layers. This allows doctors to map and measure their thickness, and also to spot potential damages on the tissues.

 

Beyond medical applications, the use of OCT is spreading with breath-taking velocity and advances in the industrial market. Promising industrial applications of OCT are emerging as cost-efficient quality improvement tools for in-line inspection of multi-layered objects in manufacturing processes. For these tasks, advanced high-speed InGaAs cameras are universally suited.

Related Products

Suitable products for this application

 

Related Products

Suitable products for this application