Circulator

Collimator/Coupler

Coupling Lenses

Faraday Rotator

Faraday Mirror

Fiber Cable

Fiber-Fiber Coupler

Fiber Focuser

FiberBench

FiberTable

FiberPolarizer

FiberPort

Isolator

Laser-Fiber Coupler

Mating Adaptor

MFI Bench

MirrorPorts

Modules

Pol. Controller

Polarimeter

Polarization Reference

Retrace System

Splitter/Combiner

Variable Attenuator

Variable Delay Line

Back Next   Coupling Lenses Coupling a laser output with maximum efficiency into a single-mode fiber requires a lens of extraordinary properties. Steep aspheric curves reduce back reflections, limiting feedback significantly in comparison to GRIN lenses. Optical performance must be diffraction limited. Insertion loss must be at an absolute minimum.  Such performance is typical of OFR Laser Lenses for Fiber-Optic and Laser Diode applications. These are micro double-aspheric Lenses, designed for diffraction limited performance. Both surfaces are multilayer anti-reflection coated. Transmittance exceeds 99% at the peak wavelength.  Mounted LLO series lenses are AR coated and mounted in a Microscope Objective Cell with industry standard RMS thread. Other mounting options available inquire.  Unmounted LL series lenses as above but unmounted.  Interchangeable FiberPort Lenses. Threaded Adapter Rings Two Adapter Rings are available for the FiberPort: RMS Thread Adapter for LLO Lenses C-Mount Adapter for miscellaneous, such as camera lenses. Mounted Aspheric Lenses Catalog Number Focal Length Working Distance Numerical Aperture Maximum Beam Dia. Equivalent Magnification LLO-4-18-λ* 18.4 mm 17.0 mm 0.13 4.4 mm 10X LLO-6-11-λ 11.0 mm 9.1 mm 0.30 6.5 mm 16X LLO-8-8-λ* 8.0 mm 5.5 mm 0.50 8.0 mm 20X LLO-4-7-λ 7.5 mm 5.5 mm 0.30 4.5 mm 24X LLO-4-4-λ 4.6 mm 2.4 mm 0.53 4.8 mm 40X LLO-2-2-λ* 2.0 mm 0.9 mm 0.50 2.0 mm 90X * not available for HoYAG. NOTE: When ordering, specify wavelength, for example, LLO-4-4-NIR.   Unmounted Aspheric Lenses Catalog Number Focal Length Back Focal Length Center Thickness Numerical Aperture Lens Diameter LL-3-2-λ* 2.0 mm 0.9 mm 2.0 mm 0.50 3.0 mm LL-4-7-λ 7.5 mm 5.8 mm 2.7 mm 0.27 4.0 mm LL-4-11-λ* 11.0 mm 9.6 mm 2.2 mm 0.18 4.0 mm LL-6-5-λ 4.8 mm 2.9 mm 3.1 mm 0.53 6.0 mm * not available for HoYAG. NOTE: When ordering, specify wavelength, for example, LLO-4-4-NIR.   Anti Reflection Coatings Spectrum Order as 380 - 640 nm -VIS 600 - 990 nm -NIR 970 - 1100 nm -YAG 1100 - 1550 nm -IR 1900 - 2150 nm -HoYag *LL-3-2, LLO-2-2 and LLO-8-8 not available for HoYAG Catalog Number Description POA-RMS RMS Threaded adaptor ring for microscope objectives POA-C C-Mount threaded adaptor ring

Optics for Research · Ph 973-579-7227 · Fax 973-300-3600 · Email: info@ofr.com