Upgrades & Accessories
The OptiCentric® systems are modular and can be expanded with upgrades and accessories to extend their range of application when measuring centration, aligning lenses and cementing of achromats:
Updates und Upgrades
In addition to centration, with an OptiSpheric® Update it is also possible to measure the effective focal length, back focal length, flange focal length, radius of curvature and the on-axis MTF.
MultiLens is the software Update for measuringcomplete lens systems. The centration error of each surface within a lens is measured non-destructively. This information can be used to give the centration of a single lens or for example a sub-assembly with respect to a free-selectable symmetry-axis, making this feature an ideal tool for manufacturing or quality control.
With the patented SmartAlign algorithm, available as an update for the OptiCentric® software, the position of the measured centration error with respect to a user-defined optical or mechanical axis is analyzed. This unique tool is used with particular success in the "OptiCentric® for Production Series".
Upgrade for Cementing of Doublets
Each OptiCentric® system that is equipped with an air bearing can be upgraded for high-precision alignment and cementing of lenses. Hence, investments in a new system are not necessary.
With the CylinderCheck upgrade it is possible to determine the centration of the cylinder axis and the wedge of cylindrical lenses.
Upgrade for Testing Infrared Optics
For quality control of mounted infrared optics, the measurement head measuring in the visual range is exchanged for a measurement head that works with infrared light.
The AspheroCheck® upgrade uses a high-precision optical distance sensor to measure the slope and position of an aspherical axis relative to a given reference axis.
This upgrade transforms the OptiCentric® system into a powerful tool for the angle measurement of plane optics.
MultiCentric® Measurement Head
The MultiCentric® measurement head measures simultaneously the three centers of curvature. The advantages of the new measurement head are particularly evident in alignment cementing and production testing of achromats/doublets, since the process time per sample is significantly reduced.
In principle, all devices of the OptiCentric® 100 range can be integrated into the workstation. Accessories, PC and various controllers in particular can be mounted and stored away in the specially designed table concept. As a result, day-to-day work with our equipment is made easier, simultaneously resulting in increased efficiency and ergonomics.
Expand accessory components and simplify the application of OptiCentric® systems
Motorized Lens Rotation Device
The lens rotation device with vacuum unit measures the centering error of single lenses with the outer edge as the reference. The lens is rotated using a motor-driven friction wheel against a V-prism. The lens is held in position by vacuum.
The control of all functions such as the pressure, rotational speed and vacuum pump is integrated in one control unit. A compressed air line system is not required.
An add-on for the lens rotation device allows the additional measurement of centration errors within cemented lenses by using a reference sensor to identify the sample’s azimuthal orientation. By evaluating this results with the proven MultiLens software, the lens centration of the entire doublet to the lens edge can be checked.
Tip-tilt table (TRT)
OptiCentric® systems use tip-tilt tables to align samples. The decoupled movements of the tip-tilt tables allow for precise positioning of the sample or sample holder. Tip-tilt tables are available in different diameters for a variety of applications and measurement systems.
Motorized Tilt and Translation Table (TRT)
For simplified sample-handling in the measurement or alignment process of an optical system especially OptiCentric® 3D 100 can be equipped with the motorized tilt and translation table (TRT). Instead of the traditional manually performed process, the motorized TRT tilts and shifts the sample such that the optical axis of the lens is aligned to match the reference axis of the system. This is performed fully automated and without interruption of the measuring process, thus permitting a shortened test cycle.
Extending the Measuring Range
The head lenses allow the measuring range of an OptiCentric® system for radii of curvature and focal lengths to be extended to ±2000 mm and more. This means OptiCentric® systems are much more flexible than systems that work without head lenses.
Linear encoder upgrade for high resolution.
A turret is recommended to change the head lenses quickly and easily. OptiCentric® offers a manual 4x changer and a motorized computer-controlled 6x changer.
Probes and Linear Scales
All sensors and linear scales are fully integrated into the system and analyzed using the software.
The edge of the lens or mount is measured by optical or tactile sensors and used to determine the symmetry axis of the lens or mount. The software then checks how the symmetry axis and optical axis are positioned relative to each other.
Linear scales are required for the radii measurement of lenses.
Most OptiCentric® systems have a standard interface for the illumination, so that different light sources can be used. (High-Power LED, cold light source)
A set with two highly accurate plane-parallel plates (diameter 25 and 50 mm) and two glass beads (diameter 4-12 mm and 14-28 mm) is available for the calibration of samples or for direct alignment of sample mounts and housings.
Reference wedges are used to check the measurement accuracy of the OptiCentric® system. They are compliant to international standards.
OptiSurf® Reference Objective Lens
In combination with an OptiCentric® 3D update, an gauge block is recommended with which it is possible to check the accuracy of the air gap and center thickness measurement. The gauge block complies with international standards.
Due to the large number of individual lens designs, it is almost impossible to use a standard holder for all lenses. Therefore various sizes of chucks are available that are suitable for many common lens geometries. In addition, the design of the vacuum chuck is kept simple and cost-effective so that in principle they can be made individually and without much cost.