Spheres & Cylindrical Optics

Torrent Photonics produces cutting-edge, high-quality spherical, cylindrical, and asphere lenses in UV, visible and IR from prototype to production quantities. Kreischer Optics, one of the early pioneers in aspheres - now part of Torrent Photonics – provides the expertise, proprietary processes, and end-to-end integration for exceptionally precise optics.

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Aspheres

Torrent manufactures precision aspheric lenses using advanced grind-and-polish fabrication and metrology techniques. Our capabilities include custom aspheres up to 200 mm diameter in optical glass and infrared materials including chalcogenides, IRG, silicon, and germanium. We work with customers to optimize manufacturability, reduce component count, and achieve high-performance optical solutions for demanding applications.

Cylindrical Optics

Torrent uses CNC manufacturing coupled with conventional proprietary methods to produce the highest quality glass cylinders in the market efficiently. With an extensive tooling library, Torrent can reduce total program charges by nearly eliminating almost all tooling charges, and our techniques are conducive to both prototype and production quantities.

Spherical

As a world leader in manufacturing custom glass lenses, Torrent Photonics meets your specifications for prototyping spherical lenses through CNC and conventional methods. With our origins in making test plates, we have developed an unmatched reputation in the industry for producing high-quality spherical lenses for clients like you, who have customers demanding high quality.

Tolerance Chart

Materials: Ohara, Corning, Schott, Heraeus | Diameter Range: 8-150mm to 5-200mm
Geometric Types: Aspheres, Spherical Lenses, Windows, Wedges, Prisms, Cylinders, & Freeforms

Attribute	Standard	Precision	High Precision
Glass Material (n_d, v_d)	±0.001, ±.8%	±0.0005, ±.5%	Design for Melt
Diameter (mm)	±0.1	±0.025	±0.015
Center Thickness (mm)	±0.1	±0.050	±0.025
Sag (mm)	±0.050	±0.025	±0.010
Clear Aperture	80%	90%	95%
Radius (larger of two)	±0.2% or 5 fr	±0.1% or 3 fr	±0.025 or 1 fr
Irregularity-Interferometer (waves, PV)	1	0.5	0.1
Irregularity- Profilometer (microns, PV)	±1	±0.5	±0.1
Wedge Lens (ETD, mm)	0.050	0.010	0.005
Scratch Dig	60-40 to 80-50	40-20	10-5 to 20-10
Surface Roughness (Å RMS)	50	20	10

Custom optics designed to for better performance.

Every project is different, that's why our engineers collaborate with your team to design and develop custom optics that fit the specific requirements of your project.

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