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Meller Optics

High precision optics for Medical, Industry and Defense. https://linktr.ee/Melleroptics Precision Optics Manufacturer. Lenses, windows, prisms, domes and more.

Sapphire, Germanium, Zinc Selenide, Zinc Sulfide, Silicon, and Ceramics. For Military, Medical, Industrial and Laser Applications.

10/15/2025

Meller Optics, Inc. of Providence, RI, has high-precision sapphire UV cell windows available for Beckman® and other centrifuges. These windows offer exceptional optical clarity along with superior chemical, pressure, and scratch resistance.

Designed specifically for Beckman® and other high-speed centrifuges, Meller Sapphire Centrifuge Cell Windows feature a scribed arrow on the edges to indicate the optic axis, making installation and alignment straightforward. They are optically clear, mechanically durable, and resistant to etching, fogging, degradation, and extreme centrifugal forces.

These windows are manufactured with tight tolerances to ensure proper sealing and alignment within the centrifuge cells. They measure 19.03 mm in diameter (±0.03 mm) and 5 mm in thickness (±0.10 mm). The windows are offered plano, with chamfers measuring 0.35 mm x 45 degrees at two locations, and have a 30-10 scratch-dig surface finish. Suitable for OEMs and end-users alike, custom sizes are also available. Contact us at Melleroptics.com

10/09/2025

Meller Optics, Inc. of Providence, RI, produces custom-fabricated large sapphire windows designed to safeguard vision systems on both commercial and military aircraft and drones. These sapphire windows are available in nearly any configuration, up to 10 inches in diameter, and can be shaped to suit specific needs. Boasting a Mohs hardness of 9—second only to diamond—they provide exceptional durability and protection for cameras and sensors. The windows are as clear as glass, offering broad spectral transmission from UV (270 nm) to IR (4.7 microns), and are capable of withstanding harsh conditions such as sand and high-speed particulates, enhancing visibility in challenging environments.

Built for resilience, Meller Large Sapphire Windows feature flatness to one-tenth wave in the visible spectrum and less than 2 arc seconds per inch in parallelism. They are finished with scratch-dig ratings ranging from 60-40 to 40-20, depending on size and design. Additionally, sapphire domes and hyper-hemispherical sapphire domes for 360-degree viewing are also available. Melleroptics.com

10/07/2025

Meller Optics, Inc. of Providence, RI, has released a detailed 8-page whitepaper outlining the key properties of sapphire and its diverse range of applications as a durable, opto-electronic material.

The whitepaper, titled *Properties and Applications of Sapphire*, offers an in-depth overview of sapphire’s structural characteristics, including its hexagonal and rhombohedral crystal forms, and how these influence property-dependent plane orientations. It highlights sapphire’s strength, durability, and optical clarity across different planes, supported by charts illustrating physical properties, wavelength ranges, and refractive indices.

Focusing on practical uses, the whitepaper categorizes sapphire applications into areas such as windows and lenses, optical domes and 360-degree viewing windows, waveplates, and precision balls. It emphasizes that many of the most critical applications involve extreme conditions—such as exposure to abrasive particles like sand, saltwater, algae, high pressures, vacuum environments, radiation, and outer space.

The *Properties and Applications of Sapphire* whitepaper is available free of charge at https://melleroptics.com/technical-data-for-sapphire-optics

09/30/2025

Advancing Optical Solutions for Modern Defense Technologies-
At Meller Optics, we are dedicated to pioneering high-performance optics that meet the demanding needs of modern defense systems. Our expertise in manufacturing sapphire and polishing of alumina optics enables us to support cutting-edge applications, including hypersonic missile technology and directed energy weapons.

09/17/2025

Meller Optics, Inc. offers custom-fabricated sapphire domes designed to accommodate different curvature sizes for missile systems, as well as nearly flat configurations suitable for gimbals and hypersonic applications.
Meller Sapphire Domes offer a maximum viewing angle of 160 degrees and are resistant to dirt, sand, and saltwater, protecting guidance systems from the elements. They transmit up to 85% of light without coatings from UV to IR, and up to 99% when coated on both sides. They can be made with long curves or nearly flat for use in hypersonic weapons.

09/11/2025

Meller Optics — a leader in the development of high-precision sapphire optics for aerospace, defense, undersea and industrial applications. With decades of expertise, Meller specializes in designing durable, reliable optical components capable of performing under the most demanding conditions.

Utilizing advanced manufacturing techniques—including ultra-precision grinding, polishing, and specialized coating processes—Meller produces sapphire optics that offer exceptional hardness, thermal stability, and resistance to scratching and corrosion. These qualities ensure optimal performance in extreme environments such as space exploration, military defense systems, and industrial inspection equipment.

09/04/2025

Meller Optics is at the forefront in the manufacturing of high tolerance laser, military, industrial and medical optics, utilizing a full range of UV, visible and IR materials.

09/03/2025

Ensuring Precision and Reliability in Critical Applications — MellerOptics.

Since 1974, MellerOptics has been a trusted partner in the design and manufacture of high-precision optical components. Our expertise in delivering custom lenses, prisms, and optical solutions supports the most demanding sectors, including defense, aerospace, and scientific research.

Committed to uncompromising quality, advanced manufacturing techniques, and rigorous quality control, we provide optical components that meet the highest standards of performance and dependability.

Partner with MellerOptics — where precision and excellence drive critical industries forward.

08/21/2025

Elevating defense and aerospace with precision optics you can trust. At Meller Optics, we specialize in cutting-edge optical solutions that meet the demanding needs of military, aerospace, and high-tech industries. From advanced lenses to custom optical assemblies, our innovations keep your mission in focus — no matter the challenge. Partner with us to see the future clearly. Because in defense and aerospace, precision is everything. Visit us at Melleroptics.com

08/08/2025

Meller Optics offers high-quality sapphire wafers up to 200mm in size. These wafers are precisely made for optical coating applications, available in various shapes like plano-convex, concave, and biconvex. They feature excellent flatness and surface quality, with customizable edges. Prices depend on size and configuration. Visit us at Melleroptics.com for more information.

07/30/2025

Melleroptics.com
Meller Optics, Inc. of Providence, Rhode Island, has introduced a line of spinel flat windows, domes, hemispheres, and spherical lenses that are optically clear and over six times stronger and three times harder than glass.
These Meller Spinel Optics offer excellent transmission from UV to MWIR wavelengths (350 nm to 5.50 microns) and feature a Knoop hardness of 1600, providing high resistance to environmental wear and impact.

Being optically isotropic, they eliminate birefringence effects, and their outstanding refractive index stability with temperature changes—due to aerodynamic heating—makes them suitable for demanding applications.

Designed for a wide range of military and commercial uses, these spinel components retain nearly 75% of their strength at temperatures up to 1000°C, have a thermal conductivity of 14.6 W/m·K, and a refractive index of 1.723 at 50 microns. They are available in various sizes and thicknesses and can be finished with

07/08/2025

Meller Optics, Inc. of Providence, RI, has available custom-made sapphire windows, lenses, and domes characterized by exceptional hardness, chemical resistance, and high-temperature tolerance.
Designed for aerospace and military use, Meller Sapphire Windows are suitable for environments involving high-velocity particles, aggressive chemicals, temperatures up to 1,000°C, and pressures reaching 10,000 psi. With a Mohs hardness of 9—second only to diamond—and high clarity, they are ideal for safeguarding sensors and optical components in guidance and imaging systems.

These windows deliver up to 85% light transmission from the UV to IR spectrum and can be coated with anti-reflective (A/R) layers to improve transmission beyond 99%. Available in sizes ranging from 1/4” to 10” diameter and thicknesses from 1/2 mm to 1”, they can be manufactured with flatness within 0.5 fringes of HeNe, parallelism from 20 to 2 arc seconds, and surface finishes from 60-40 to 40-20 scratch-dig.
Pricing for Meller Sapphire Windows depends on configuration, size, and order quantity. Requesters can obtain detailed literature and price quotes upon request.

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Address

Providence, RI

Opening Hours

Monday	9am - 5pm
Tuesday	9am - 5pm
Wednesday	9am - 5pm
Thursday	9am - 5pm
Friday	9am - 5pm

Website

https://melleroptics.com/contact/

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