The world’s most advanced
instrument for IOL metrology
The world’s most advanced
instrument for IOL metrology
The NIMO TEMPO is a cutting-edge metrology instrument that uses advanced wavefront measurement to deliver precise characterization of intraocular lenses (IOLs), including monofocal, multifocal, toric, and EDoF types – even those with complex diffractive designs. Designed for both R&D and production, it ensures speed, precision, and versatility across the full range of IOLs.
Paired with the Tempo-Mentor software, offering comprehensive optical analysis, precise wavefront visualization, and API integration, the NIMO TEMPO fits into both lab and production environments, ensuring fast, reliable, and consistent results with minimal operator intervention.
Wavefront-based Metrology for Complete IOL Characterization
HOW IT WORKS
NIMO TEMPO uses advanced interferometry to assess the full optical performance of intraocular lenses. By capturing the interference pattern from a split laser beam, it reconstructs the lens’s wavefront and provides detailed insights into imaging quality, design characteristics, and manufacturing precision.
The system is composed of three integrated components:
• the laser source and illumination optics
• the interferometer
• the imaging optics and camera
These enable the acquisition of phase-shifted images used to reconstruct key IOL performance metrics.
Through-focus MTF of a commercial multifocal lens
Measurement results
Diffractive IOL steps profile
Camera live image
Modulation map
Engineered for Production
Stable interferometer: No optical table needed, insensitive to vibration
Operator-independent: Automatic lens recognition and optical center detection
Exceptionally fast: Up to 10× faster than conventional inspection systems
Comprehensive Testing
OPTICAL CHARACTERIZATION FOR ALL IOL DESIGNS
Manufacturers and R&D teams can rely on NIMO TEMPO for fast, reliable characterization of all IOL designs. Whether designing new optical concepts or ensuring repeatability in production, it delivers precise, consistent data – even for the most complex diffractive lenses.
With high-resolution wavefront technology, NIMO TEMPO provides accurate characterization of all IOL designs. The examples above show wavefront-based measurements, but also provides through-focus and through-frequency MTF curves, lens powers, cylinder, label axis error, and diffractive step profiles – all captured in a single measurement cycle.
High-Precision Metrology for All IOL Designs
KEY BENEFITS
All IOL Designs
Supported
Monofocal, toric, multifocal, EDoF, including diffractive & refractive designs.
Ultra-High
Resolution
Precise optical data and full-profile characterization in one measurement.
High-Speed
Testing
Measures IOLs within 25 seconds – boosting productivity.
Multiple Model Eye
Simulations
Evaluate performance using digital corneal models – ISO1, ISO2, Arizona and custom.
Operator-
Independent
Reduces training needs, handling errors, and ensures repeatable results.
Data
Integration
Connects to production systems via API for traceability and automation.
Did you know?
NIMO TEMPO combines a high-precision interferometer with powerful wavefront algorithms, enabling high-speed IOL measurements within 25 seconds, even for complex diffractive designs.
It’s a unique solution to accelerate both design & production workflows.
Modulation Transfer Functions
MTF
NIMO TEMPO provides full-resolution through-focus and through-frequency MTF analysis, offering a detailed view of image contrast across spatial frequencies and optical positions. This enables robust performance evaluation of all IOL designs in a single measurement.
Through-Focus Curves
Visualize optical performance across focal positions using smooth, continuous curves – ideal for analyzing focus distribution, contrast, and overall lens behavior.
Through-Frequency Profiles
Examine contrast across spatial frequencies in both horizontal and vertical axes, helping identify sharpness and optical consistency.
Enhanced Analysis
Customize up to 3 spatial frequencies (e.g., 25, 50, 100 lp/mm) and use peak values to analyze performance for pass/fail decisions.
MTF & Model Eye
MTF curves can be generated with or without a model eye, depending on the desired testing conditions.
Visual Acuity Metrics
MTFa & OTF based
NIMO TEMPO also compute MTFa & OTF based metrics to quantify optical performances into any Model Eye geometry.
Key Benefits
• Quantifies contrast performance in one value
• Enables comparison across lens types and design iterations
• Predict Visual Acuity perfomances
Corneal Modeling for IOL Testing
MODEL EYE SIMULATION
NIMO TEMPO features advanced model eye simulation capabilities that replicate real-world visual conditions using synthetic ray-tracing. Unlike traditional physical model eyes, the system uses wavefront-based optical data to digitally simulate the complete optical pathway – from the model eye to the IOL and onto the image plane. This approach ensures precision, flexibility, and consistency across R&D and production environments.
The instrument supports both general model eyes (ISO1, ISO2, Arizona) and individual patient-specific corneas using Zernike coefficients, making it suitable for design validation, performance tuning, and post-operative simulation.
By avoiding physical alignment steps and allowing dynamic model control, NIMO TEMPO delivers deeper insights and improved reproducibility compared to MTF benches using physical model setups.
The diagram shows the Arizona model and all the geometry used in NIMO TEMPO’s ray-tracing model eye simulation.
ISO2 uses a custom PMMA lens, the IOL is placed in a cuvette, with a front surface asphericity adjusted to match a defined level of corneal spherical aberration.
Choice of model eye
Multiple Model Eye Options
Select from ISO1, ISO2 (adjustable SA), configurable Arizona, and patient-specific Zernike cornea profiles – all accessible directly in the software interface.
Ray-Tracing Based Precision
Combines the wavefront map of the lens with synthetic propagation through the selected model eye to compute realistic image quality.
Custom Patient Import
Load Zernike coefficients from real patient corneas via CSV files to simulate actual anatomical conditions for advanced design evaluation.
Control of Spherical aberration in the ISO2 eye model
Full Optical Path Simulation
Calculates the interaction of the lens with the model eye and fitting residuals using validated ray-tracing, offering deeper understanding of optical behavior.
Zernike Cornea model eye that allows the user to load a CSV file that contains the measured Zernike coefficients of a patient cornea.
Configurable Arizona model eye to simulate physiological model eyes based on measured / theoretical values
Validated Accuracy
The synthetic model eye method is validated on all types of IOL designs.
Comparisons with Zemax simulations show:
• Paraxial focus error <1nm
• Wavefront RMS error <λ/1000
• MTF RMS error (at focus plane) <0.001
• Through-Focus MTF RMS error
(over focus range) <0.01
Same Trifocal Toric IOL – Different Outcome
An example of how model eye choice affects performance
Cornea without astigmatism
Cornea with astigmatism
ISO-Compliant IOL Power Mapping
POWER
NIMO TEMPO enables high-precision analysis of IOL optical power using wavefront-based measurements. It captures key parameters – including Spherical Equivalent Power (SEP), cylinder, and additions – with highest accuracy and excellent repeatability, even for complex diffractive profiles.
SEP Measurement
Accurately measures the IOL’s main refractive power at user-defines apertures – a critical metric for lens labeling and QA.
Cylinder & Axis Detection
Quantifies astigmatism and identifies axis orientation – especially useful for toric IOL validation.
Multiple Add Power Extraction
Detects and quantifies up to two additions (e.g., trifocal lenses), ensuring compatibility with advanced multifocal designs.
Visual Confirmation
Provides high-resolution images and overlay markers for alignment and fitting verification.
Automated Centering
No manual alignment required – the system automatically detects and centers the lens to ensure accurate power profiles.
Comprehensive Insights for IOL Optical Quality
Detailed Measurement Reporting
NIMO TEMPO delivers comprehensive reports tailored for IOLs, providing ultra-precise data for MTF, power, cylinder, axis, additions, wavefront maps, and diffractive profiles – ensuring consistency across all IOL designs.
Raw Data Export
Complete export of measurement results for in-depth optical analysis and traceability.
Integrated Reporting
Includes wavefront maps, MTF curves, and step profiles – all accessible from a single report.
Quality Assurance
Ensures all data is securely stored, version-controlled, and easily accessible for quality and compliance teams.
Detailed lens analysis with wavefront maps and MTF curves, enabling precise reporting for power, cylinder, axis, additions, and diffractive structures.
Fast. Precise. Trusted by IOL Experts.
The industry’s most advanced IOL metrology
– for all IOL designs, including diffractive lenses.
Optimized for Both Research and Production
TWO MODES FOR ENHANCED FLEXIBILITY
MENTOR-TEMPO software adapts to both R&D and production environments, offering two powerful modes tailored to the specific needs of each use case. Whether you’re exploring new IOL designs or running high-throughput manufacturing, the instrument ensures control, consistency, and clarity.
- R&D Mode
Provides full access to all measurement parameters and outputs, giving researchers complete flexibility.
- Analyze wavefront maps for all IOL designs, incl. diffractive lenses
- Measure MTF through-focus and through-frequency in any selected model eye
- Access detailed power data (SEP, Additions, Cylinder) and PSF (linear/log) in all focus positions
- Enhanced analysis including MTFa and Multiple Model Eye
- Customize workflows to match specific R&D protocols
Ideal for developing new optical designs, tuning lens performances, and validating IOL products.
- Production Mode
Guides operators through intuitive, lockable workflows designed for speed, consistency, and quality control.
- Predefined templates that prevent parameter changes during measurement
- QR code support for lens identification and batch tracking
- Automatic generation of pass/fail results and reports in various formats
- Full traceability with local SQL database logging and central database integration
Production managers can set user access levels and connect the system to automated lines – ensuring secure, scalable operation.
TRUSTED BY INDUSTRY EXPERTS
With NIMO TEMPO, we’ve reduced inspection time and significantly increased yield in our manufacturing line. The instrument delivers repeatable results within 25 seconds, even for the most complex IOL designs.
Lambda-X Ophthalmics understands our needs and provides the right metrology tools. Their expertise contributes directly to the success of our lab.
Additional Analysis Capabilities
SOFTWARE PLUG-INS
The MENTOR-TEMPO software is designed to be flexible and extendable, offering a variety of plug-ins to enhance its functionality and tailor it to specific needs.
Automatic Toric Lens Marks Detection (TLMD)
The TLMD plugin automates the detection of engraved toric marks on IOLs to determine axis orientation. By reducing manual input, it minimises human error and speeds up the measurement process. Custom detection patterns can be configured and saved using a dedicated interface. Parameters such as threshold, angle range, and minimum mark spacing are adjustable to ensure robust performance across various lens types.
Automated Detection: Identifies toric lens engravings with predefined patterns, reducing manual errors.
Axis Computation: Measures the alignment error between toric marks and the actual lens axis.
Flexible Modes: Supports Auto, Manual, and None detection methods to fit different workflows.
Pattern Management: Allows creation and storage of custom detection patterns.
Extended Depth of Focus (EDoF)
The EDoF plugin provides two complementary evaluation modes – Peak + Addition and Depth of Focus (DoF) – to assess lens performance across a range of focal points. It is particularly useful for analyzing complex designs such as multifocal and EDoF IOLs.
Peak + Addition Measurement: Evaluates MTF at a chosen addition point and visualizes the integrated optical quality over that zone.
Depth of Focus (DoF) Measurement: Quantifies the optical range where contrast remains above a user-defined MTF threshold.
Custom Parameters: Supports configurable inputs such as addition value, spatial frequency, and peak selection (far/intermediate/near).
Enhanced Visualization: Displays shaded MTF curve zones and markers for intuitive interpretation of depth performance.
Configurable Arizona Model Eye
The Arizona model eye plugin allows users to simulate realistic visual conditions by customizing the anatomical parameters of the eye model. Based on the Jim Schwiegerling model, this digital simulation replaces the crystalline lens with an IOL, offering a standardised environment for accurate optical evaluation.
Customizable Eye Anatomy: Adjust parameters like corneal radii, conic constants, thickness, refractive index, ACD, and IOL-pupil distance for realistic simulation.
Standardized Optical Evaluation: Based on the Jim Schwiegerling model eye, replacing the crystalline lens with an IOL for consistent performance assessment.
Dynamic Configuration Display: Automatically flags non-default values with an asterisk (*) in output graphs for clear traceability.
Enhanced MTF Simulation: Enables more accurate and relevant analysis across different eye geometries and design scenarios.
Zernike Cornea Model Eye
This plugin replaces the standard corneal model with two customizable surfaces – the anterior and posterior surfaces of the cornea – described using Zernike coefficients. Users can import a CSV file containing patient-specific or theoretical data and adjust parameters such as corneal thickness, anterior chamber depth (ACD), and refractive indices for the cornea, aqueous, and vitreous.
It enables advanced simulations to evaluate IOL performance under realistic visual conditions, making it a valuable tool for understanding lens behaviour in aberrated eyes and assisting with IOL selection tailored to individual patients.
Custom Corneal Modeling: Simulate anterior and posterior surfaces using Zernike coefficients.
CSV Import: Load patient-specific or theoretical data via a structured template.
Configurable Parameters: Modify corneal thickness, anterior chamber depth (ACD), and refractive indices for cornea, aqueous, and vitreous.
Realistic Simulations: Evaluate IOLs under complex or aberrated visual conditions.
Project Integration: Parameters are saved and applied throughout the MTF analysis.
Temperature & Humidity Record
The Temperature & Humidity Record plugin enables real-time monitoring of conditions within the NIMO TEMPO device. Integrated sensors capture the temperature of the support of the cuvette, the internal air temperature, and the relative humidity. While the values are not used for automatic correction, they offer useful context to improve measurement repeatability and traceability. All readings are stored with each project and remain accessible for reprocessing.
Measurement Context: Displays indicative values for the support of the cuvette temperature, internal volume temperature, and relative humidity.
Data Logging: Saves environmental readings directly into the project file for traceability.
Reprocessing Support: Maintains access to original conditions even during later data reprocessing.
Improved Repeatability: Helps manufacturers assess and optimize testing consistency across varying environments.
Traceability
The Traceability plugin improves measurement reliability and process control with injector monitoring and optional QR code scanning. It enables detailed tracking and recording of instrument operations, supporting stronger quality procedures in both R&D and production environments.
Injector Presence Detection: Prevents a measurement if no injector is detected, ensuring proper setup before data acquisition.
Maximum Injector Time: Blocks measurement if the injector has been left in place beyond a user-defined time limit, helping to enforce workflow discipline.
Duplicate Measurement Prevention: Optionally blocks a second measurement if the injector has not been removed between runs, avoiding duplicate data collection.
Custom QR Code Scanning: Automatically detects and logs QR codes on injectors, holders, and cuvettes. The unique accessory IDs are stored in the project file and shown in the results section for full traceability.
9th Order Polynomial Correction
The plugin allows refined post-processing of power results using a 9th-order polynomial. It expands on the default 4th-order correction in TEMPO-Mentor to better align reported values with reference standards. While it does not alter the measured curve itself, it applies a correction to the reported power values in the Results section. This is useful for calibration and traceability when higher-order deviations are present in the system.
Extended Correction Range: Applies a polynomial fit up to the 9th degree to handle complex deviations.
Custom Coefficients: Supports individual input for each coefficient (A0 to A9) to match calibration needs.
Improved Result Accuracy: Refines displayed power values to better match actual lens behavior.
Standards Compliance: Supports precise reporting in line with internal or external QA standards.
Active Directory
Registered Windows users can log in with their existing credentials, avoiding duplicate accounts. This integration ensures your security policies and user management are applied automatically, enhancing both security and ease of use.
Production Software Integration API
The TEMPO-Mentor API enables full integration with the production and quality control environments. It supports remote control of the instrument, automated measurement workflows, real-time data extraction, and secure connectivity with internal and third-party systems.
This makes it ideal for centralized floor management, robotic setups, and custom enterprise software solutions – ensuring scalable and repeatable IOL measurements across the most demanding production lines.
Remote Instrument Control: Configure, calibrate, and operate instruments from your central software – including parameter updates and system references.
Automated Measurement Workflows: Trigger sequences such as optical reference, lens loading, and measurement completion – enabling integration with robotic arms.
Real-Time Data Access: Extract measurement results instantly for QA validation, ERP systems, or production databases.
Template Management: Create and lock measurement templates across instruments and locations – ensuring consistency and speed.
Software Ecosystem Compatibility: Easily integrate with in-house dashboards, LIMS, ERP, and QA systems through the public API. This enables flexible deployment and aligns the instrument with existing digital workflows for efficient production and traceability.
Essential Add-ons for Superior Results
ACCESSORIES
We offer a range of specialized tools to enhance the NIMO TEMPO system, ensuring precision, efficiency, and optimal performance for your IOL design and production.
Biocompatible
IOL Holders
Compatible with IOLs from 10 to 13mm in outer diameter. Custom holders available on request.
Interferometric Quality
Wet Cells
High-precision wet cells designed for accurate measurements
Certified Calibration
Lenses
Provides traceable accuracy for reliable system calibration.
Cell Injector and
Injector Stand
Provides secure and repeatable IOL insertion into the measurement cell.
Don’t find the accessories you’re looking for?
Contact us, and we’ll help you find the perfect solution tailored to your needs.
Key Metrics and Capabilities
TECHNICAL SPECIFICATIONS
The NIMO TEMPO comes with TEMPO-Mentor software, necessary accessories, and documentation to get started immediately.
Operator-Independent to Achieve Unmatched R&r
EASE OF USE
The NIMO TEMPO system, with its integrated TEMPO-Mentor software, is built for intuitive operation and can be used by both R&D and production teams with minimal training.
These features streamline IOL characterization and deliver repeatable results with reduced operator dependency.
Access our Brochure and Selected Scientific Publications
RESOURCES
Brochure
Discover how NIMO TEMPO supports fast, high-resolution measurements for all IOL designs.
Scientific Publication
Limitations of OTF-based metrics for predicting through-focus visual acuity in pseudophakic eyes.
Scientific Publication
Intra-Observer and Inter-Observer Variability of Intraocular Lens Measurements using an Interferometry Metrology Device.
Scientific Publication
On Bench Evaluation of Intraocular Lenses: Performance of a Commercial Interferometer.
Ophthalmic Inspection Instruments
EXPLORE OUR FULL RANGE
Explore all our other metrology solutions for ophthalmic lenses, each designed to meet the unique needs of lens manufacturers. Enhance your production efficiency, ensure precise quality control, and achieve unmatched performance with our specialized instruments.
Intraocular Lenses
Contact Lenses
Spectacle Lenses
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