Chiltern

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  • FAQ
  • Frequently asked questions

    The Chiltern is an entry level instrument and so it is not possible to add temperature control or filtration.  However upgrading to a JCF instrument allows not only filtration and temperature control, by using a TC20i; but filtration, temperature control and UV sanitisation by using a TSC3. For more details please contact us.


    We are able to refurbish and repair the majority of older Optimec instruments.  Email us some photographs showing the condition and/or problem together with the serial number and we can provide you with a quotation.  If you would prefer a new instrument or an upgrade, we can put an attractive package together for you. For more details please contact us.


    The original halogen lamp fitment (soon to become unavailable) has now been superseded by a specially designed LED light engine which is now fitted as standard to all new Optimec instruments.  The LED provides a whiter light, sharper images, cooler operating temperature, and lower running costs.  The LED has been designed so it can be retrofitted by the customer to the majority of older instruments. For more details please contact us.


  • Specification
  • Dimensions: Height 485mm, Width 296mm, Depth 374mm
    Weight: 11kg
    Power consumption: 15 watts

    Diameter range: 6 – 16mm
    Diameter accuracy: +/- 0.025mm
    Graticule increments: 0.1mm divisions (0.05mm graticule divisions available on Chiltern/S)
    Magnification diameter view: x16 approx

    BCOR range: 6.9-9.5mm
    BCOR accuracy: +/- 0.02mm
    Magnification BCOR view: x17 approx

    Consumables: 1 x 12V DC 6.6W LED light engine

    Calibration: BCOR test pieces, Diameter test pieces


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      Lens Inspection

      Lens Diameter

      Lens BCOR

      Lens Thickness


      The Optimec Chiltern is a smaller version of the JCF, retaining the same method of both BCOR and diameter measurement. However, this instrument is designed for the practitioner who wishes to check soft contact lenses to assist in better fitting, and so does not require the larger image sizes afforded by the JCF. The design layout of the optics and the wet cells are simplified to reduce costs and so the Chiltern cannot be used with temperature control instruments.

      • Diameter Measurement
      • BCOR Measurement
      • Centre Thickness Check
      • Surface and Edge Inspection
      • Small Footprint