Non Standard Precision Optics Aspheres – Freeform Optics – Micro Structures

The Laboratory for Precision Machining LFM at the Leibniz Institute for Materials Engineering IWT in Bremen is devoted to the application of precision engineering. The laboratory comprises a CNC workshop area and a 300 m² temperature controlled production and surface metrology area housing several state of the art ultraprecision machine tools with up to
5 axes. Surface metrology is performed using phase shift interferometry, white light interferometry and atomic force microscopy. For figure evaluation coordinate measuring machines and 3D profilometers are available. 

Your Need

Manufacturing solutions for non-standard metal optics and optical molds e.g., freeform molds, micro structured optics, and micro lens arrays. The spectrum of the machineable materials includes stainless steel, semiconductor materials, UV- and IR-materials, and mold insert materials like silicon carbide and tungsten carbide.

Our Solutions

Diamond Machining

  • Aspheres with a diameter up to 650 mm
  • Freeform surfaces by slow or fast tool servo machining processes
  • Optical micro structures and lens arrays
  • Diffractive optical components
  • Laser and ultrasonic assisted machining processes
  • Development of diamond cutting processes

Precision Machining and Grinding

  • Precision machining and micro machining of mechanical components
  • Precision machining of micro structured surfaces
  • Precision grinding of complex optical molds
  • Ductile grinding of brittle materials
  • Development of deterministic grinding processes

Polishing

  • Polishing of aspheric surfaces
  • Polishing of micro structured surfaces
  • Development of advanced CNC-polishing techniques

Measuring and Testing

  • Figure evaluation
  • Investigation of surface topography
  • Assessment of subsurface material modifications

Our Services

Our services for industry and research institutions range from consulting and training, development of customized manufacturing technologies and manufacturing of precision optical components to geometry evaluation and analysis of micro and macro topography as well as comprehensive documentation.