Posts by Brian King

Brian King

10 Tips for Medical Device Optical-Breadboard Prototypes

When designing a medical device made of complex, multi-functional mutually interacting subsystems it’s best to de-risk those subsystems instead of coming up with a paper design, assembling it, and hoping it works first time. De-risking individual subsystem behaviours one at a time enables more-focused assessments and improves troubleshooting. For an optical subsystem, this de-risking is […]

Brian King

Incoherent-Light Hazard Classification for Medical Devices

There are numerous light-hazard classification standards that may pertain to your medical device: ISO 60601-2-57, IEC 62471, ANSI RP-27-20, ISO 15004-2, ANSI Z80.36, ISO 10936-2, ISO 10939, and so on… In this blog post, I’ll examine certain commonalities and points of potential confusion of the “big 4” incoherent-light-source safety standards: IEC 62471 and ANSI RP-27-20 […]

Brian King

Coupling Light from LEDs and Light Guides in Medical Devices

Moulded plastic light guides are an inexpensive means to “pipe” light around inside a medical device. Their design process makes light guides amenable to a variety of shapes and sizes.  Applications include delivering light to an indicator, a switch, or a peripheral diagnostic attachment, thus, these optical guides are an attractive technology for solving a […]

Brian King

Medical device color management options

Why Colour-rendering Accuracy is Critical for Full-Colour Medical Device Color Management “A picture is worth a thousand words.” That truism is no-less apt when it comes to medical devices, particularly when an accurate record or real-time presentation of tissue appearance is key to appropriate diagnosis and treatment.

Brian King

Five recommendations for approaching medical device optics projects

Five powerful perspectives for the Optics Laboratory Implementing medical device optics projects like a novel measurement scheme, or bringing up a breadboard prototype for the first time, is a dynamic and messy endeavour. I’d like to share five key recommendations for approaching such journeys based on my 25 years of designing and implementing laser-based measurements.

Brian King

Using Monte Carlo Simulation for Biomedical Device Design

Light from biomedical devices interacts with human tissue, which contains a variety of structures and cell sizes and shapes. In many cases, optical scattering plays a strong role in the propagation of optical radiation. One common approach to simulating scattering is the Monte Carlo technique. Popular optics-simulation software incorporates Monte Carlo scattering, allowing you to […]

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