Measure The Color Of Ophthalmic Lenses

Color Measurement of Lenses

Glasses come in several forms, but each one hinges on the lens design. From sunglasses and prescription lenses to safety glasses, blue light blockers and specialty lenses, the myriad of purposes calls for diverse combinations of lens colors, anti-reflection coatings, hard coats and hydrophobic films. Lens colors and coatings play a key role in a lens's effectiveness and adherence to various standards and regulations set by organizations like the Food and Drug Administration (FDA) or the American National Standards Institute (ANSI).

Meeting these regulations and offering an effective, high-quality product requires a clear understanding of and objective measurements of lens characteristics. That's where spectrophotometers come in. HunterLab spectrophotometers can measure light transmission across an extended wavelength range, including near-ultraviolet (UV) and near-infrared waves. As a lens color test measurement device, spectrophotometers allow ophthalmic lens producers to:

Measure lens and coating thicknesses.
Obtain a dioptic spread measurement.
Measure transmission rates of visible, ultraviolet, infrared and blue light.
Avoid aberrations and other lens problems.
Determine appropriate Abbé material values.
Ensure a high-performing product.

Whether you're making prescription-strength clear glasses, amber-colored blue-light blockers for gamers, welding shades, contrast-boosting red shades for inspectors or some other type of lens, accurate measurements are key to protecting users' eyes, maintaining optical clarity and meeting applicable regulations.

UltraScan PRO

When collecting the precise data required for lens color measurement, we recommend the UltraScan PRO. This high-performing spectrophotometer measures reflectance, transmittance color, spectral reflectance, spectral transmittance and transmission haze. Its extended wavelength range dips into the ultraviolet and infrared sections from 350 to 1050 nanometers. This property ensures you can accurately measure the transmission rates of these damaging rays — plus blue light and everything else on the visible spectrum.

With a diffuse/8° geometry and three size options for sample measurement areas, this device offers a versatile piece of equipment suitable for both research and quality control. It also has automated specular component inclusion and exclusion and automated lens change capabilities.

Other features of the UltraScan PRO include:

A 5-nanometer optical resolution and reporting interval.
Three reflectance measurement areas.
Automated UV calibration and control.
A large transmission compartment, open on three sides.
Flash Xenon light sources that eliminate ambient light effects, produce virtually no heat and require no warm-up times.
EasyMatch quality control software for easy reporting and analysis.

Whatever lenses you're measuring, the UltraScan PRO can make quick work of it. This tool is built with efficiency and ease of use in mind. It features a rugged, long-lasting design and can accommodate external tools and various sample handling devices.

Experience the HunterLab Advantage

At HunterLab, we've been developing cutting-edge color measurement devices for over six decades and have become one of the industry's top choices for measuring the color of ophthalmic lenses. That's because our devices can offer unmatched accuracy and precision with designs that fit neatly in labs or industrial settings for research and quality control.

Learn more about our lens color measurement devices and how they can support lens production by contacting a knowledgeable representative today!