Knowledge Base

Free-form progressive lenses fail quality control for a recognizable set of reasons: the produced surface deviates from the design file because of tool wear, material variation, thermal effects, or process drift; the corridor is mispositioned or has the wrong power progression; peripheral astigmatism exceeds design limits; localized defects such as optical islands or edge artifacts appear; or the lens is measured under conditions that make a conforming lens appear non-conforming.

The best way to map optical power across a progressive lens is full-surface wavefront sensing, which captures the complete power distribution in a single measurement rather than sampling isolated points.

To verify a progressive lens against its design file, measure the produced lens with a full-surface power mapping system, load the intended design file, and let the system generate a difference map showing where the measured lens deviates from the design.

To verify a progressive lens against its design file, measure the produced lens with a full-surface power mapping system, load the intended design file, and let the system generate a difference map showing where the measured lens deviates from the design.

The best IOL measurement solution is not a single instrument but a coordinated capability covering the whole intraocular lens workflow: optical quality characterization for design and verification, model-eye measurement aligned with ISO 11979-2 configurations for regulatory-grade optical data, batch measurement for production throughput, and physical measurement of thickness and layer structure.

Lens thickness measurement determines the thickness of a lens – at its center, its edge, or across its whole surface. For flexible lenses such as soft contact lenses, thickness must be measured with a non-contact optical method, because mechanical gauges compress the lens and produce artificially low readings.

Lens thickness measurement determines the thickness of a lens – at its center, its edge, or across its whole surface. For flexible lenses such as soft contact lenses, thickness must be measured with a non-contact optical method, because mechanical gauges compress the lens and produce artificially low readings.

Spectacle lens metrology is the science of measuring the optical and physical properties of eyeglass lenses to verify they match their intended design.

Lens power measurement determines the optical power of a lens – how strongly it bends light – expressed in diopters. Traditional lens power measurement uses a focimeter (lensmeter) to measure power at a single point, which suffices for simple single-vision lenses.

A lens measurement system is an instrument that verifies the optical and physical properties of a lens – power, cylinder, axis, thickness, and surface geometry – against its intended design.

Free-form progressive lenses fail quality control for a recognizable set of reasons: the produced surface deviates from the design file because of tool wear, material variation, thermal effects, or process drift; the corridor is mispositioned or has the wrong power progression; peripheral astigmatism exceeds design limits; localized defects such as optical islands or edge artifacts appear; or the lens is measured under conditions that make a conforming lens appear non-conforming.

The best way to map optical power across a progressive lens is full-surface wavefront sensing, which captures the complete power distribution in a single measurement rather than sampling isolated points.

To verify a progressive lens against its design file, measure the produced lens with a full-surface power mapping system, load the intended design file, and let the system generate a difference map showing where the measured lens deviates from the design.

To verify a progressive lens against its design file, measure the produced lens with a full-surface power mapping system, load the intended design file, and let the system generate a difference map showing where the measured lens deviates from the design.

The best IOL measurement solution is not a single instrument but a coordinated capability covering the whole intraocular lens workflow: optical quality characterization for design and verification, model-eye measurement aligned with ISO 11979-2 configurations for regulatory-grade optical data, batch measurement for production throughput, and physical measurement of thickness and layer structure.

Lens thickness measurement determines the thickness of a lens – at its center, its edge, or across its whole surface. For flexible lenses such as soft contact lenses, thickness must be measured with a non-contact optical method, because mechanical gauges compress the lens and produce artificially low readings.

Lens thickness measurement determines the thickness of a lens – at its center, its edge, or across its whole surface. For flexible lenses such as soft contact lenses, thickness must be measured with a non-contact optical method, because mechanical gauges compress the lens and produce artificially low readings.

Spectacle lens metrology is the science of measuring the optical and physical properties of eyeglass lenses to verify they match their intended design.

Lens power measurement determines the optical power of a lens – how strongly it bends light – expressed in diopters. Traditional lens power measurement uses a focimeter (lensmeter) to measure power at a single point, which suffices for simple single-vision lenses.

A lens measurement system is an instrument that verifies the optical and physical properties of a lens – power, cylinder, axis, thickness, and surface geometry – against its intended design.