GRADIUM® Lenses - Lightpath Technologies - #1

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General GRADIUM® Lens Specifi cations Design Wavelength 546 nm Operating Temperature -20ºC to +200ºC Storage Temperature -40ºC to +300ºC Outer Diameter (OD) Tolerance ± 0.250 mm Center Thickness (CT) Tolerance ± 0.100 mm Effective Focal Length (EFL) for GPX, GBX, and GMN Series ± 1% Working Distance (WD) for GPX, GBX, and GMN Series ± 1% Effective Focal Length (EFL) for GAD Series ± 2% Working Distance (WD) for GAD Series ± 2% Surface Quality 40/20 Scratch/Dig In high performance optical systems, spherical aberration, chromatic aberration and astigmatism induce sweat on the brows of optical designers. These aberrations can prevent optical systems from reaching their full potential. Avoiding these factors in optical systems is often diffi cult without using multiple lens elements. LightPath’s unique line of GRADIUM® optics makes correcting these aberrations with a single optical element a practical reality. GRADIUM® lenses are made from LightPath’s proprietary axial gradient index glass. Its unique refractive qualities can be exploited to reduce spherical aberrations – resulting in performance similar to single-term aspheres. GRADIUM® lenses have been applied as simple singlets or doublets in complex multielement systems. They have been very well received for use in high-power industrial laser systems; many of the world’s largest Nd:YAG and fi ber laser manufacturers now incorporate GRADIUM® optics in their laser delivery systems. LightPath’s achromatic doublets are designed for use with collimated, polychromatic light in the visible spectrum. The GRADIUM® glass element is used to reduce the spherical aberration which is a common side effect of a cemented doublet design. GRADIUM® lenses provide a cost-effective solution for many high-performance applications. Standard spherical lenses suffer from spherical aberration, which artifi cially limits the focused spot size. Standard Spherical Lens GRADIUM® Lens GRADIUM’s® unique refractive index profi le bends rays while traveling through the lens, resulting in a better focused, smaller spot. • Gradient index lenses for high power laser delivery • Aspheric performance • Smaller focused spot size • Single lens replacement for conventional doublets • High performance, cost effective • Standard designs with diameters from 5 mm to 80 mm GRADIUM® Lenses www.lightpath.com 43 1-800-472-3486 GRADIUM® Lenses