Fractional CTO · Optical Engineering · Medical Devices

Strategic Technical Leadership.
Zero Full-Time Overhead.

Combining 21+ years of optical R&D at Canon and Harvard's Massachusetts General Hospital with hands-on startup CTO experience — bringing world-class DeepTech leadership to your team, on your terms.

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The Problems We Solve

Who Needs This?

For DeepTech Startups

Founders building optical sensors, medical imaging systems, or precision measurement instruments who need a technical co-pilot with real R&D-to-market experience — without the cost of a full-time CTO.

For Venture Capital

Investors who need rigorous technical due diligence on optical or medical device claims before committing capital — assessed by someone who has filed 24 patents and led multi-million-dollar hardware programs end to end.

Core Expertise & Deliverables

What We Bring to the Table

Optical & Measurement R&D

Deep expertise in Optical Coherence Tomography (OCT), interferometry, and laser speckle imaging — integrated with quantitative data analysis algorithms in MATLAB and optical simulation in Zemax. From pico-meter metrology to clinical imaging systems.

Medical Device Development

End-to-end medical device experience from clinical need identification (with surgeons at Harvard Medical School) through prototype development, histopathological validation, and US patent filing. Proven at MGH in cardiac surgery and point-of-care diagnostics.

CTO Leadership & Project Management

Multi-year budget ownership at the hundred-million-yen scale, leadership of multinational engineering and sales teams, and direct negotiation of collaboration agreements with US and Japanese universities, hospitals, and corporations.

About the Expert

Masaki Hosoda — Principal & Founder

Triple-Degree Academic Foundation

M.Eng. in Applied Physics, Waseda University (Japan) · M.S. in Optical Sciences, University of Arizona (USA) — the combination that bridges rigorous physical theory with practical optical system design at the highest level.

21+ Years Across Canon, MGH / Harvard & Startups

Spent 16 years at Canon Inc. leading optical metrology and medical imaging programs — including secondments to Massachusetts General Hospital (Boston) and Canon U.S.A. (Cambridge, MA). Subsequently served as Director & CTO of a Japanese medtech startup, launching new OCT products and entering the medical market.

24 Issued Patents · Invited Lecturer at Harvard Medical School

US patents issued: 9 (6 as lead inventor) · Japan patents issued: 15. Invited lecturer at Harvard Medical School (Wellman Center Research Seminar, ~100 attendees) and presenter at 10+ international conferences including SPIE Photonics West and SPIE BiOS.

Truly Bilingual, 9+ Years of US Work Experience

Native Japanese · Former US Permanent Resident · Over 9 years embedded in Boston and Cambridge research environments. Uniquely positioned to bridge Silicon Valley / Boston DeepTech culture with Japanese engineering rigor and supply chains.

Fractional Engagement Models

Engagement Models

Tier 1

The Advisor

Best for: Strategic direction and technical reviews

~20 hrs / month

  • Weekly strategy & roadmap meetings
  • Optical system & algorithm design reviews
  • Patent landscape & IP strategy consultation
  • Async support between sessions
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RECOMMENDED

Tier 2

The Fractional CTO

Best for: Hands-on R&D leadership and execution

~60 hrs / month (2 days/week)

  • Embedded leadership of optical / hardware R&D teams
  • Prototype development & validation oversight
  • Vendor & university partnership negotiations (US & Japan)
  • Technical due diligence reports for investors
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Track Record

Impact by the Numbers

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Pico-Meter Metrology

Achieved world-class pico-meter order measurement uncertainty developing optical interferometers for semiconductor lithography lenses at Canon Inc.

24

Patents Issued

9 issued US patents (6 as lead inventor) and 15 issued Japanese patents across optical imaging, medical devices, and precision measurement systems.

¥100M+

Budgets Managed

Led multi-hundred-million-yen R&D programs — from concept and optical design through factory transfer and commercial launch — at Canon, MGH, and as CTO of a Japanese startup.

Ready to de-risk your technology?

Start with a focused 30-minute discovery call to assess fit. No pressure, no jargon — just honest technical dialogue.

Based in Kawasaki, Japan · Former US Permanent Resident