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.
Radius measurement in production
The SpheroCompact allows radius measurements in production with accuracies of up to ±0.05 %.
Precise and reproduceable
The SuperSpherotronic® HR offers excellent accuracies of up to ±0.01 %.
With an accuracy of up to ±0.005 % the UltraSpherotronic® reaches the highest measurement precision worldwide.
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.
|Radius of curvature (convex)||+2.5 mm … +∞||+2 mm … +∞ 1)||+2 mm … +∞ 1)|
|Radius of curvature (concave)||-4 mm … -∞||-4 mm … -∞||-4 mm … -∞|
|Travel distance of linear encoder||±12.5 mm||±30 mm||±30 mm|
|Diameter of sample||6 mm … 500 mm||4 mm … 500 mm||4 mm … 500 mm|
|Measurement accuracy 2)||Up to ±0.05 %||Up to ±0.01 %||Up to ±0.005 %|
|Control unit||Separate control unit||Integrated into instrument base||Integrated into instrument base|
|Height||140 mm||289 mm||289 mm|
|Diameter||90 mm||185 mm||185 mm|
|Weight||1.5 kg||6.5 kg||6.5 kg|
|Type||Table top device||Table top device||Table top device|
1) Measurement of radii < +4 mm requires the replacement of the ruby ball and the use of the precision ring 3.5 mm.
2) The maximum achievable measuring accuracy depends on the radius of the lens to be measured and the ring used. For detailed information on special measuring tasks, please contact your sales partner.
Upgrades & Accessories
Precision rings with ruby balls
Precision rings with tungsten carbide balls
Mechanical pressure pad