Archive: Nov 2020

Scaling Up to Quickly Advance COVID-19 Point-of-Care Testing Technologies

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Company growth COVID v2


COVID-19 point-of-care (POC) tests enable rapid detection and diagnosis outside hospitals or physicians’ offices, providing results within minutes. Speed, accuracy, and test availability are cornerstones in preventing the spread of COVID-19. As demand for point of care testing surged, top manufacturers tapped us to design custom optical systems supporting rapid testing based on molecular, antigen, or antibody detection. To address the increased demand, Gray Optics doubled its staff to meet aggressive product development schedules.

Many rapid tests rely on fluorescence detection using a lens precisely aligned to a CMOS image sensor. Here, the field-of-view, depth-of-field, and lens f/# are crucial to achieving the required performance. The specification and design of the fluorescence excitation and emission filters are also key to the device performance. A common problem in fluorescence detection is an angular mismatch, leading to a bleed-through of light, which degrades the system’s signal-to-noise ratio. Our team met these challenges, designing the diagnostic device’s precision optical components for manufacturing at scale.

Founder Dan Gray said, “Our mission is to help customers develop life sciences and medical device products that directly improve patients’ lives. I’m proud of this organization’s ability to rise to meet the urgent need, and we are committed to solving our customers’ challenges by expanding our capabilities and services.”

Gray Optics is already planning for significant growth in staff and facility space in 2021 to advance imaging technologies that build on their core capabilities: product development for biomedical and industrial applications through rapid prototyping, optical engineering, precision optical assembly and alignment, and custom test development.

If you’re interested in custom optical system design for life sciences applications, contact our team today.

Meet Horace Johnson, Senior Program Manager

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Horace Johnson

Horace Johnson

Gray Optics is pleased to welcome Horace Johnson, Senior Program Manager. Horace will be responsible for leading and ensuring smooth and effective optics project completions according to our mission to change, improve and save lives through the development of new optical products for the medical, life sciences and industrial markets.

Horace is an accomplished Program Manager with a wealth of experience leading and executing strategy to deliver product development, manufacturing and supplier development initiatives for Class I, II and III medical devices.

Horace has expertise in process engineering, plastics and electrical assembly, drug combination devices, lean six sigma, DFM, and process validation. He has extensive experience in injection molding, design transfers, CMO development, product transfers, CAPA, and risk management.

Horace is passionate about applying his background in program management applying engineering problem solving discipline to deliver complex that add value and address market needs.

He holds a Bachelors in Mechanical Engineering from the University of Miami.


  • Program Management and Supply Chain Management
  • Strategy and Change Management
  • Manufacturing Development and Scale Up