Spherometer

Fast and efficient radius measurement of lenses

Spherometers made by TRIOPTICS are used worldwide in hundreds of optics companies and laboratories for the precise measurement of the radius of curvature of concave and convex lenses. The radius of curvature is determined by the tactile measurement of the sagittal height of the curved lens surface. This high-precision radius measurement by means of Spherotronic and SpheroCompact®, which can also be used for calibrating test plates, represent the industry’s standard today. In addition, the long-term accuracy and automated functions of our spherometers are highly appreciated in laboratory and manufacturing environments.

High Precision

The high-precision ruby gauge head of the central encoder enables radius measurements with a measurement accuracy of up to ±0.005 %.

Traceability

The certified measuring rings and precision optical flats allow traceability of the measuring accuracy to international standards. This sophisticated technology is therefore regarded as the gold standard for laboratories and manufacturing.

Versatility

The selection of the model and associated selection of measuring rings with various diameters can be adapted to individual requirements. The versatile systems thus cover a very large measurement range.

Products

SpheroCompact®

SpheroCompact®

Radius measurement in production

The SpheroCompact® allows radius measurements in production with accuracies of up to ±0.05 %.

  • Multi-purpose use, particularly for highly curved convex and concave surfaces because small radii of up to +2.5 mm and -4 mm especially can be measured
  • Its compact design allows SpheroCompact® to be used flexibly
  • Spherometer optimized with regard to price and performance for use in manufacturing
SuperSpherotronic® HR

SuperSpherotronic® HR

Precise and reproduceable

The SuperSpherotronic® HR offers excellent accuracies of up to ±0.01 %.

  • Radius measurement of convex and concave surfaces up to +3 mm and -6 mm
  • Excellent precision for the measurement of highly curved surfaces with a large lens diameter by means of an increased travel of 60 mm
  • Extreme resistance to mechanical deformation thanks to the use of tungsten carbide balls in the ring
UltraSpherotronic®

UltraSpherotronic®

Highest precision

With an accuracy of up to ±0.005 % the UltraSpherotronic® reaches the highest measurement precision worldwide.

  • Radius measurement of convex and concave surfaces up to +3 mm and -6 mm
  • Excellent precision for the measurement of highly curved surfaces with a large lens diameter by means of an increased travel of 60 mm
  • Extreme resistance to mechanical deformation thanks to the use of tungsten carbide balls in the ring

Software

SpheroPRO

The user-oriented software SpheroPRO was designed to fully meet the requirements in real-life applications. The intuitive user menu permits the easy, quick and error-free determination of the radius of curvature of lenses via pre-configured measurement programs. The current test step can be controlled directly by a schematic representation of the measured radius of curvature (concave or convex). Quality control is performed by means of a continuous statistical analysis of values.

  • Very easy handling through pre-configured measurement programs for various applications, e.g.: test tube and single surface measurements
  • Fast check of test step and measurement process for plausibility through schematic representaiton of radius of curvature (convex/concave) and current number of measurements
  • Continuous quality control through statistical analysis of measurements, including mean value, standard deviations and pass/fail analysis
  • Intuitive storage and recall of measurement series for quality control
  • Compact but comprehensive documentation in measurement certificates that can be stored digitally and printed
  • Intuitive storage of templates (selected ring, nominal radius, selected tolerance)
  • Ring calibration data are easy to import and, if necessary, update for product extensions or product checks
  • To reduce general maintenance and space requirements, the software has also been designed for touch screen operation. This eliminates the need for a keyboard and mouse

SpheroPRO Software

Upgrades

Precision rings with ruby balls

Precision rings with ruby balls

(SpheroCompact®)

  • Standard set (diameter): 12.5 mm, 25 mm, 50 mm, 75 mm, 100 mm, 125 mm
  • Special sizes (diameter): 6 mm, 20 mm, 30 mm 38 mm, 40 mm, 150 mm, 225 mm
  • According to customer requirements
Precision rings with tungsten carbide balls

Precision rings with tungsten carbide balls

(SuperSpherotronic® HR/UltraSpherotronic®)

  • Standard set (diameter): 7.8 mm, 14 mm, 20 mm, 28 mm, 38 mm, 60 mm, 90 mm, 120 mm
  • Special sizes (diameter): 12 mm, 14+3.5 mm, 20+1.8 mm, 28+1.2 mm, 48 mm, 75 mm, 150 mm, 225 mm
  • According to customer requirements
Mechanical pressure pad

Mechanical pressure pad

  • Constant and fixed contact pressure between the sample and ring
  • For small lenses with a low net weight

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