E.R. Precision Optical Corporation (ERPOC) occupies a 22,000 sq. ft. facility in Apopka, Florida’s HUBZone located 10 miles north of Orlando.  ERPOC is ready to meet your demands with our state-of-the-art machining capabilities which enable us to maximize machining efficiencies for both blanks and finished parts.

Materials Division

  • Full custom Germanium & Silicon crystal growing capabilities

Blank fabrication facility

  • Multiple OptiPro 5-axis CNC machining centers
  • Meyerburger Precision CNC saw
  • Blanchard grinders
  • Core drilling
  • Centering & Edging


  • OptiPro High Speed CNC Polisher
  • Continuous polishers
  • Multiple spindles for grinding, polishing of radius & flats


E.R. Precision Optical is proud to stand behind our products from the finest quality materials to finished optical components. We assure our customers of this quality with the rigorous tests and measurements on all our shipments. We utilize the most highly recognized equipment in the industry to test all our finished parts.

ERPOC has a full line of tooling in-house to validate your critical specifications on materials and products:

  • Transmission and Reflectance -Perkin Elmer FTIR Spectrophotometer
  • Material resistivity – (≤ 0.1 Ω cm) Micro Circuits 4-pt Probe
  • Surface roughness – (≤1 Å) Zygo Profilometer
  • Surface irregularity & radius of curvature – ( ≤ λ /10)
  • Zygo Interferometer — 632 nm
  • Wyco Interfereometer — 10.6 μm
  • Angular deviations – (≤2 sec)
  • Nikon Auto Collimators
  • Concentricity or (TIR) Total Indicator Runout – (≤2 sec)
  • Opto-Alignment Assembly Station
  • Keyence VR-3200 hi-speed wide-are 3D measurement system

As the majority of our business is defense related, we have the utmost concern for verification to specification. Upon request with your shipment, ERPOC will provide Certifications of Compliance and/or Coating Curves to your material, optical performance and dimensional specifications.

Thorium Coating Removal Center

  • Licensed by State of FL, Dept. of Health, Bureau of Radiation Control