Phi-Theta 3D Scanner | Rotational Positioning System for the Inspection of Contact Lenses (living transplants and synthetics)


Ultra-precise measurement of living eye lenses

Certain diseases or the individual properties of a cornea do not allow patients to implant or lens transplant artificial lenses. In this case, a living eye lens must be transplanted. In order to assess living lenses with regard to their quality, surface quality and patient suitability, they have to be measured completely and with high precision. Ordinary laser measurement of living lenses is almost impossible. The biological tissue is extremely sensitive to light, so that it is destroyed by the laser when the light is static and / or centered.

To solve this scanning application, a lens holder with the living lens is attached. This turns at 300rpm. The surface is measured by an optical sensor. The sensor is swiveled by + -60 ° during the rotation. This enables a complete 3D measurement of the lens without damaging the biological material.



Highly precise positioning of the light path


  • Ideal for rotational 3D inspection of grafts
  • Suitable for the inspection of synthetic contact lenses with special, highly sensitive surfaces
  • High-precision 3D scans of optical properties with repeatability up to 0.05°
  • Maximum quality and lifetime of the sample due to extremely fast measuring with 300°/s
  • Good price/performance ratio due to drive with 2 stepper motors with additional encoders

Optionally expandable:

  • Adaptable for different optics and measuring environments
  • ISO 14644-1 versions (up to class 1 on request)
  • Integration into the complete customer-specific application
  • Immediate use with pre-configured controller incl. exemplary software


Extreme lifetime and perfect suitability for your patients

The optical properties of the lens can be precisely predetermined for quality assurance. This high-precision 3D scanning application offers you the following advantages:

  • triggering on encoder position enables the assignment of the measured value and thus high-precision 3D scans
  • Rejects and damage are prevented by fast, swiveling and rotating movements
  • Patients can use the implants much longer, more safely and reliably and benefit from the best possible visual acuity
  • the lens holder has connections for nutrient solutions for further quality improvement

Individual extensions and customizations

Engineering services include the fitting of the systems to your structure and the desired controlls. Furthermore, we develop prototypes and like to adapt the systems to the environmental requirements of your application particle emission, radiation, temperature, precision special parts manufacturing, working height, collision protection, safety concept, compensation factor and filter, sensor mounting, brake, decoupling, special lubrication, special colors, holders, adapters, special motors with pharmaceutical approval, comprehensive documentation, test protocoll, llife cycle tests


Fields of application

Live lens transplant measurement, Sensitive contact lens inspection system, Artificial lens quality assurance, 3D lens measurement, 3D lens inspection, Contact lens quality control, Lens quality assurance, Rotational measurement with optical sensors, Laser measurement of live lenses, Rotational 3D measurement of biological samples

782495:001.26 Phi Theta
Travel [mm; deg] n *x 360 ± 60
Repeatability unidirectional [µm; deg] ± 0.04 ± 0.04
Repeatability bidirectional [µm; deg] ± 0.05 ± 0.05
Positioning speed [mm/s; deg/s] 150 150
Max. load [N]

Stepper motor

Stepper motor

Drive   direct direct
Feedback Motor-Encoder Motor-Encoder


Specifications are subject to change. Values are for the single axis with our controller. Parameters shown here are typical values for a standard configuration. By customization and given in depth knowledge of your application significantly improved values can be achieved.

    1. Your customized system

    1. Your contact details
    1. *lease read our data protection regulations here before sending the contact form.

Get your first 3D design in just a few days:

Dipl.-Ing. Elger Matthes

Phone: +49 (0) 351 88585-0