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Precision Lenses

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Custom precision lenses are a key optical component for many transmission and imaging applications in the aerospace, security, defense, machine vision, health care, and life science industries.

We manufacture custom lenses for the UV through the infrared, for imaging, focusing, collimation and illumination, using standard polishing and grinding techniques, as well as single-point diamond turning and magnetorheological finishing (MRF®).

Taking a design-for-manufacture approach to lens production, our complete vertical integration facilitates the production of cost-effective, high-quality custom lenses.

We design and manufacture our precision lenses, by hand, in both the United States and the United Kingdom..

Contact us to see what we can do for you.

Precision processing capabilities

Our lens processing capabilities include CNC generating, grinding, and polishing.

We polish spherical, semi-spherical lenses, and aspheric lenses, and have a unique capability to manufacture complex shapes on lenses, such as step profiles or off-axis shapes.

  • 5-axis grinding and polishing machines are utilized for the manufacturing high precision aspheric surfaces on optical glass.
  • Single-point diamond turning is used for aspheric and diffractive optical elements.

In addition to singlets, we produce a wide variety of doublets, triplets, and more complex lens assemblies.


400 nm–14 µmVisible3–14 µm
SpecificationsSphericalAsphericalCylindricalAspheric / Diffractive / Hybrid
Substrate materialAll optical glassesAll optical glassesAll optical glassesGe, Si, ZnS, ZnSe, chalcogenides
Diameter rangesUp to 200 mmUp to 60 mmUp to 200 mmUp to 250 mm
Thickness rangesUp to 100 mmUp to 100 mmUp to 100 mmUp to 100 mm
Surface qualityScratch-dig 40-20 to 5-2Scratch-dig 20-10Scratch-dig 20-10Scratch-dig 20-10
Surface accuracy (conventional polishing)λ/10λ/10λ/10λ/10
Surface accuracy (MRF)λ/40λ/20λ/20λ/20
Dimensional tolerance±0.005 mm±0.005 mm±0.005 mm±0.005 mm
Radius2.0 m to infinity2.0 m to infinity2.0 m to infinity2.0 m to infinity
AR coatingsHigh laser damage thresholdHigh laser damage thresholdHigh laser damage thresholdHigh transmission
High transmissionHigh transmissionHigh transmissionBroadband or V-coat anti-reflection
Broadband or V-coat anti-reflectionBroadband or V-coat anti-reflectionBroadband or V-coat anti-reflection
Country of manufactureUSA / UKUSA / UKUSA / UKUSA / UK

G&H Precision Optics Brochure

Download our Precision Optics Products & Solutions Guide


From high transmission broadband anti-reflection coatings to V-coats for high energy applications, our extensive coating capabilities for precision optical components deliver performance across the spectrum from the UV to the FIR. Take a closer look at our optical coatings service.


We have made a significant investment in metrology equipment to ensure that our customers receive quality, high-performing precision optical components. More details on our metrology capabilities can be found on our metrology page.

Environmental testing

Environmental testing of components and coatings is critical for the assurance of performance in rugged conditions. G&H environmental testing capabilities include MIL-C-675C, MIL-C-48497A, MIL-E-12397, and MIL-M-13508C for endurance against abrasion, adhesion, humidity, temperature, and environmental conditions.

Product enquiry

So we can better understand your requirements, please complete the product enquiry form below.