Give Existing Germanium Components a Second life
Germanium remains one of the most widely used infrared optical materials thanks to its excellent transmission in the 2–14 µm wavelength range. It is commonly found in thermal imaging systems, defence applications, industrial inspection, scientific instrumentation and infrared sensing.
However, obtaining new germanium optics has become increasingly challenging. Global supply constraints, export controls and extended lead times have made sourcing new material both difficult and expensive. For many organisations, replacing damaged or obsolete components is no longer the quickest or most cost-effective solution.
At Crystran, we offer an alternative: repolishing and re-machining of existing germanium optical components, helping customers maximise the value of the material they already own.
Our Capabilities
Crystran has extensive experience machining and finishing germanium optics. Our precision CNC machining and optical polishing capabilities allow us to restore or modify a wide range of components, including:
- Optical windows from one-offs to production runs
- Plano-convex, plano-concave and meniscus lenses
- Prisms
- Custom infrared optical components
Depending on the condition and geometry of the part, we can carry out:
- Precision repolishing of optical surfaces
- Removal of scratches and surface damage
- Re-establishment of optical flatness or surface figure
- Re-machining of external dimensions
- CNC machining of new features
- Modification of existing components to suit updated designs
Our advanced CNC machining capability allows many existing parts to be adapted rather than replaced, making it possible to repurpose surplus or obsolete components into new designs.
Modern Manufacturing for Existing Components
Crystran's investment in advanced CNC machining and optical manufacturing equipment enables us to work with high-value infrared materials while maintaining the precision demanded by optical applications.
Whether a component requires simple surface restoration or extensive mechanical modification, our team can assess the feasibility and recommend the most cost-effective approach.
In addition to repolishing and precision machining, we routinely work with trusted optical coating partners to provide a complete refurbishment service. Depending on your application, refurbished components can be supplied with a wide range of optical coatings, including:
- Anti-Reflection (AR) coatings
- Diamond-Like Carbon (DLC) protective coatings
- Custom filter coatings
- Other application-specific coating solutions
From initial inspection through CNC machining, drilling, repolishing and final coating, Crystran can manage the entire refurbishment process, providing a cost-effective alternative to manufacturing a new optic from increasingly difficult-to-source germanium material.
Repurposing Existing Germanium Material
Many organisations have surplus or obsolete germanium components sitting on the shelf—perhaps oversized windows, discontinued parts, rejected components with cosmetic defects outside the required clear aperture, or material left over from previous projects.
Rather than allowing this valuable material to go to waste, Crystran can often machine entirely new optical components from existing germanium stock. Larger windows or blanks can frequently be re-machined into smaller windows, lenses or prisms, providing a cost-effective solution while avoiding the challenges of sourcing new germanium.
Is Your Component Suitable?
Not every damaged optic can be successfully refurbished, but many can.
The suitability depends on factors such as:
- Remaining material thickness
- Depth of scratches or damage
- Existing geometry
- Optical tolerances
- Final application requirements
- Yield requirements
Our engineers can evaluate your existing component and advise whether repolishing or modification is practical before any work begins.
Why Choose Crystran
Choosing Crystran as your optical components supplier ensures access to world-class expertise and state-of-the-art manufacturing facilities. Crystran specializes in fabricating high-quality IR and UV materials, including exotic crystals and innovative glasses, all processed under stringent quality controls. With ISO9001:2015 and ISO14001:2015 certifications, Crystran guarantees exceptional quality and environmental responsibility. Their technical sales team offers unparalleled support, ensuring quick, reliable service, whether you need a single optic or a high-volume production run. Crystran’s global reach and competitive pricing make them an ideal choice for optical solutions.
For more details, visit our About Us page.