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Tim Losik, CEO of ProPhotonix, notes that specialised LED arrays are finding their way into medical imaging systems
D
ue to the more demanding technology requirements and advances in the
medical market, medical imaging is increasingly utilising vision system illumination to capture that image. Tese vision systems are now being used in a vast range of applications from endoscopy to vascular imaging. Each medical imaging
application has unique challenges with specific lighting requirements. Lighting specifications for an endoscope will vary significantly from that of an illuminator for vascular imaging. However, there are some common attributes. Each medical
The system will not perform to its full potential without the correct intensity
imaging system must be compact. While this is obvious for an application such as endoscopy, it is also true of larger systems such as vascular imaging. A compact illuminator can enable a reduction in the overall system footprint, which is desirable for the OEM and the end user. Identifying the optimum
wavelength is also a challenge in medical imaging, which is application driven. Recently, ProPhotonix worked with one of its customers to improve the overall image quality of their vascular imaging system by correctly identifying the specific infrared wavelength. Te optimised wavelength solution resulted in a significant improvement in contrast and overall image quality. Intensity is the most consistent attribute in medical imaging
systems. Te system will not perform to its full potential without the correct intensity. Te key challenge in achieving high intensity of the illuminator is oſten managing the trade-off between the size limitations and heat dissipation. Chip-on- board LED technology allows for the direct contact between the LED chips and the thermally efficient substrate, providing the customer with superior thermal management. Chip-on-board LED technology provides the capability to manufacture miniature light sources, such as those used in endoscopy, as well as very dense LED packages in a small form
factor, where high intensity in a compact package is required. Te illustrations above are
solutions to technical issues, but there are also commercial issues that need to be considered. Cost is a major consideration in most medical imaging applications. Tis is particularly critical where the illumination forms part of a single-use component of the system. In this case, the ability to manufacture in volume, and at a low cost, is a key consideration for the customer. Due to our expertise in the
design and manufacture of custom chip-on-board LED arrays and custom solutions, ProPhotonix has seen an influx of new medical imaging customers. Te company expects that this growth will continue as the range of vision applications in medical imaging increases.
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