Fraen secondary optics and precision components
Fraen secondary optics, TIR collimators, color-mixing zoom assemblies, lens arrays, and precision turned parts: technical selection by model.
Secondary optics and TIR collimators across FLP, FCP, FSP, and FML series
Fraen total internal reflection collimator lenses are engineered for high-power LEDs from leading semiconductor manufacturers. The optical elements provide beam shaping efficiency reaching ninety percent, producing uniform narrow, medium, wide, and elliptical radiation patterns.
- Narrow and medium beam FLP series collimator lenses tailored for industrial luminaires
- Precision FCP series optical assemblies aligned with Cree XLamp semiconductor emitters
- Uniform beam profile FML and FSP lenses preventing central discoloration across targets
- High-grade PMMA and polycarbonate optical materials resisting thermal degradation
Fraen color mixing optical systems and dynamic zoom lens assemblies
Fraen patented optical assemblies are developed for multi-die RGBW and RGBA arrays to eliminate color fringing and shadows. Movable multi-lens zoom groups providing continuous beam angle adjustments are utilized throughout stage luminaires, architectural illumination, and studio fixtures.
- Micro-structured optical surfaces delivering uniform chromatic mixing without artifacts
- Dynamic zoom lens assemblies enabling smooth beam transitions from spot to wide flood
- High-transmission profile lenses engineered for entertainment and architectural projectors
- Thermally stabilized optical geometry maintaining focal precision during lamp operation
Large-format lens arrays and high-bay roadway optical panels
Fraen multi-lens arrays and large-format optical panels provide integrated secondary optics for high-density LED circuit boards. These multi-cavity panels serve street luminaires, highway floodlights, and industrial high-bay fixtures requiring optimized ground illumination footprints.
- Monolithic linear and rectangular lens clusters housing multiple optical channels
- Asymmetrical roadway beam distributions compliant with municipal lighting standards
- Integrated perimeter sealing grooves supporting IP66 and IP67 luminaire assemblies
- Tough optical polymers resisting hail impacts and outdoor ultraviolet exposure
Optical holders, alignment adapters, and sub-assembly housings
Fraen mounting holders ensure precise mechanical positioning of optical lenses over semiconductor emitters within tight sub-millimeter tolerances. Housings are produced in black and white finishes to eliminate stray emissions while snapping or fastening directly onto circuit boards.
- Alignment holders featuring locating pins for repeatability on surface-mount boards
- Engineering polymer housings with continuous thermal operating limits up to 120 °C
- Pre-applied industrial adhesive tape options for rapid manual or robotic assembly
- Mounting adapters accommodating standalone lenses across twenty and thirty-five millimeter sizes
Precision turned components on Swiss-style CNC and Escomatic lathes
Fraen Machining Corporation manufactures precision turned metal and polymer components using a fleet exceeding one hundred fifty Swiss-style CNC lathes and Escomatic turning machines. High-speed automatic equipment turns small-diameter bar stock with micro-level geometric tolerances.
- Turning operations handling bar diameters from half a millimeter up to thirty-two millimeters
- Volume production using stainless alloys, titanium, brass, bronze, and technical polymers
- Multi-axis turning and milling incorporating micro-drilling and transverse cross-hole features
- Dimensional verification utilizing coordinate measuring machines and automated optical comparators
Precision injection molded components and automotive pointer assemblies
The Fraen Corporation facility in Reading produces over one hundred twenty-five million molded components annually on injection presses spanning twenty-eight to four hundred tons. Operations encompass insert molding, ultrasonic joining, and automated assembly of vehicle instrument cluster pointers.
- High-cavitation precision molding maintaining tight shrinkage tolerances and flatness parameters
- Manufacture of balanced instrument pointers for automotive instrument clusters and gauges
- Insert molding integrating pins, bushings, and stamped terminals into polymer housings
- Pad printing, hot stamping foil decoration, and automated functional sub-assembly lines
Fraen Corporation manufacturing facilities in Massachusetts and optical heritage since 1942
Established in 1942, Fraen Corporation originated as an American precision manufacturer producing components for mechanical timepieces.
Over decades of industrial evolution, the enterprise expanded into specialized plastic injection molding and high-tolerance metal turning, serving major automotive, electronic, medical, and defense OEMs.
With the advent of solid-state lighting, Fraen Optics pioneered plastic secondary optics for high-power LEDs. Today, Fraen operates two specialized production plants in Massachusetts: an injection molding and assembly facility in Reading, and a dedicated CNC turning plant in Woburn.
Physics and architecture of Fraen total internal reflection (TIR) collimators
Fraen collimator lenses operating on total internal reflection principles redirect divergent hemispherical emissions from semiconductor diodes into tightly controlled parallel or contoured beams.
Unlike traditional faceted reflectors, Fraen TIR optics collect up to ninety percent of total luminous flux, preventing hot spots, dark rings, and unwanted peripheral spill.
Lens series such as FLP, FCP, FSP, and FML are specifically contoured to match source dimensions of Cree, Lumileds, and OSRAM emitters, utilizing high-purity optical polymers that maintain optical clarity without yellowing under sustained thermal operational loads.
Color mixing optics and continuous zoom illumination systems for architectural fixtures
For multi-die RGBW and RGBA lighting fixtures, Fraen engineered patented optical systems that eliminate multi-color fringes along the beam perimeter.
Micro-structured refractive optical surfaces facilitate uniform spatial blending of discrete wavelengths, which is critical for stage spotlights, studio illumination, and exterior architectural washing.
Building upon this platform, multi-element motorized zoom systems achieve continuous beam adjustment from concentrated narrow spots to broad flood illumination while preserving beam symmetry, chromatic stability, and sharp cutoff boundaries.
Large-format lens arrays and high-bay roadway optical panels
Municipal street lighting, roadway illumination, and industrial high-bay lighting installations demand wide-area multi-lens panels. Monolithic optical blocks from Fraen integrate clusters of precision optical lenses positioned over high-density circuit boards.
Each individual lens feature within the array exhibits a tailored asymmetrical profile distributing luminous intensity according to highway safety standards while minimizing glare for motorists.
Integrated sealing perimeters accommodate elastomer gaskets for luminaire enclosures rated to IP66 and IP67, while durable polymer alloys withstand outdoor hail and ultraviolet exposure.
High-precision metal and polymer turning across 150 Swiss-style CNC and Escomatic machines
Fraen Machining Corporation in Woburn operates a production fleet of more than one hundred fifty Swiss-style CNC lathes and Escomatic turning centers.
The division specializes in high-volume turned components fabricated from stainless alloys, titanium, brass, bronze, and technical polymers held to micro-inch tolerances.
Machining capabilities cover bar stock diameters from half a millimeter up to thirty-two millimeters, incorporating deep-hole drilling, axial slotting, and thread milling.
Component inspection is conducted via coordinate measuring machines and non-contact optical inspection systems compliant with AS9100D and IATF 16949.
Custom injection molding production and automotive pointer instrumentation sub-assemblies
The Fraen Corporation facility in Reading spans fifty-seven thousand square feet, housing precision injection molding machines with clamp forces ranging from twenty-eight to four hundred tons.
Producing more than one hundred twenty-five million components per year, the plant serves as a tier supplier of instrument cluster pointer assemblies for vehicle dashboards as well as microscopic medical components.
Capabilities span insert molding, ultrasonic welding, pad printing, hot foil stamping, and automated sub-assembly conducted in clean-controlled manufacturing environments.
FRAEN and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of FRAEN and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.
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Documents and sources
- Company overview and capabilities — precision components and injection molding at Fraen Corporation
- Manufacturing facilities and plants — Fraen facilities in Reading and Woburn, Massachusetts
- Secondary optics and LED lenses — standard and custom optical collimators from Fraen Optics
- Quality certifications and standards — ISO 9001 and AS9100D quality management compliance
- Optical component catalog — secondary lenses from Fraen for high-power semiconductor lighting
- Technical lens datasheets — beam angle distribution specifications for Fraen collimator optics
- Holder and lens mounting specifications — Fraen mechanical sub-assemblies for LED lighting
- Optical compatibility tables — optical characteristics of Fraen lenses across semiconductor platforms
