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Most people have never heard of germanium, yet it sits inside a surprising number of military cameras, sensors, and targeting systems. For decades that mattered little, because the material was easy to source. That changed when China, which supplies most of the world’s germanium, began restricting exports in 2023, and the pressure has only grown since. The 2026 National Defense Authorization Act added germanium to a list of covered materials and directed the Department of War to stop relying on foreign suppliers for optical glass and optical systems by December 2027. That deadline is now pushing the Pentagon to find a domestic substitute, and it has just funded one company to help build it.
LightPath Technologies, Inc. (NASDAQ: LPTH) makes optical and infrared components for aerospace, defense, and industrial customers, and it has spent years developing an alternative to germanium called BlackDiamond, a chalcogenide glass licensed exclusively from the U.S. Naval Research Laboratory. The company announced it had won a funded prototype agreement under a Department of War initiative called the Critical Low risk Electro optic Alternatives for Resilience program, known as CLEAR, which is run by the department’s Advanced Materials Office.
The goal of CLEAR is straightforward. Many infrared and electro optic systems used in surveillance, targeting, and situational awareness depend on germanium, and losing reliable access to it would create a real gap in military capability. The program funds companies to mature alternative materials so that gap never opens. LightPath’s award covers further development of BlackDiamond as a germanium substitute, building on qualification work the company already completed with the Defense Logistics Agency.
What makes this particular agreement interesting is the path it opens. Under a federal rule known as 10 U.S.C. Section 4022(f), a prototype project that was competitively awarded and then completed successfully can lead directly to a production contract without another round of bidding. In plain terms, if LightPath’s prototype work goes well, the company would not need to compete again for the manufacturing business that could follow. Sam Rubin, LightPath’s president and chief executive officer, described the award as “a direct statement of government support” for a germanium alternative, coming from the very customer that will eventually field the systems built with it.
LightPath is a modest sized company, with a market value of roughly $700 million and its main manufacturing base in Orlando, Florida, along with facilities in Texas, New Hampshire, and Latvia. It has been building momentum this year separate from this award. In July 2026 alone, the company reported an $11 million follow on order for infrared cameras and a $13 million follow on order for optical assemblies tied to defense and counter drone customers, and it also signed an agreement to divest its operations in China. Taken together, those moves suggest a company trying to align its manufacturing footprint with where its defense customers most want their supply chains to sit.
Supply chain politics rarely move quickly, and a government prototype award does not guarantee that a production contract will ever follow. But the timeline here is unusually specific. With the December 2027 sourcing deadline approaching and Congress having already flagged germanium as a material the country needs alternatives for, the Department of War has a clear incentive to keep qualified suppliers ready. LightPath’s earlier work with the Defense Logistics Agency already moved several BlackDiamond materials through qualification, and this new agreement extends that effort under a program built specifically for the germanium problem.
None of this changes the fact that LightPath remains a small company operating in a market where a handful of large defense contractors set the pace. Yet the story here is less about size and more about timing. A material shortage created by geopolitics has turned into a funded government project for a company that happened to already hold the technology needed to solve it, and the coming months should show whether that early advantage converts into the kind of long-term production work that would change how the company is valued.
