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HRDT

Discover our patented technology High Refraction Diamond Turning at SyntecOptics.com. From machining Visible Spectrum Optics to NIR Spectrum Optics, we can assist with your project.

High Refraction Diamond Turning

HRDT LensHRDT Lens Chart
HRDT Optics

High Refraction Diamond Turning (HRDT) for NIR Applications

Until now, polymers for high index, heat-resistant, NIR optics could only be molded; prototypes required 8–12 weeks minimum, mold costs raised production break-even points.

Using advanced optical plastics like Ultem™, HRDT can reliably achieve a surface as smooth as 60 Angstroms, with even smoother surfaces theoretically possible. HRDT, a patented process from Syntec Optics, enables direct diamond turning lowering costs by 2 to 5X:

  • Suits spherical, aspherical, toroidal, cylindrical, cone and plano shapes
  • Works for lens surfaces with multiple diffractive structures
  • Supports polyetherimide and polyethersulfone thermoplastic resins
POLYMER
Time/cost Glass Molded SPDT HRDT
Fast development Yes No Yes Yes
Prod. start-up costs No Yes No No
Vol. prod. cost adv. No Yes No No
Spectrum
Visible Yes Yes Yes Yes
NIR Yes Yes No Yes
MWIR/LWIR Yes Not Yet* Not Yet* Not Yet*
* Hybrid solutions are possible