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- Aspheric Condenser Lenses
Aspheric Condenser Lenses
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Aspheric Condenser Lenses
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Catalog excerpts
474 Phone: 1-800-222-6440 • Fax: 1-949-253-1680 O p t i c s TECHNICAL REFERENCE AND FUNDAMENTAL APPLICATIONS CYLINDRICAL AND SPHERICAL LENSES LENS SELECTION GUIDE SPECIALTY LENSES PRISMS MIRRORS OPTICAL SYSTEMS OPTICS SETS Aspheric Condenser Lenses Tc Te P2 BFL EFL d • Aspheric surface reduces spherical aberration • Higher NA than spherical lenses • Ideal for condensing and light collection • Economical for OEM applications Fabricated using B270 glass, and available with a single-layer MgF2 coating, these lenses provide excellent transmission in the visible to near-infrared regions. The aspheric surface is precision molded, while the plano or spherical surface is ground and polished. Ideal for light collection, projection, illumination, detection, and condensing applications. Specifications Focal Length Tolerance ±5 % Material B270 Optical Crown Glass Wavelength 380–2100 nm Clear Aperture central 80% of diameter Surface Quality 80-50 scratch-dig Diameter Tolerance Dia. <10, +/-0.25; 10 <25, +/-0.3; 25 <70, +0.2/-0.4; 75, +0/-0.5 mm Center Thickness (Tc) Tolerance Dia. <25, ±0.3; 25 <70, ±0.4; 75, ±0.5 mm Edge Thickness (Te) For reference only Wedge Dia. <10, ±30 arc min; 10 <25, ±35 arc min; 25 <70, ±30 arc min; 75, ±20 arc min Temperature 200 °C (392 °F) maximum Antireflection Coating Single-layer MgF2, Ravg <1.5%, Rmax <2.5%, 400–700 nm Durability MIL-C-675C, moderate abrasion Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (see page 622) Damage Threshold AR coated: 500 W/cm2 CW, 1 J/cm2 with 10 nsec pulses, typical Ordering Information Diameter (mm) EFL (mm) Asphere Dia. (mm) f/d BFL (mm) P2 (mm) TC (mm) Te (mm) S2 Shape R2 (mm) 6.8 6.0 6.8 0.88 4.12 -1.83 2.78 0.56 Plano 9.0 6.78 9.0 0.75 4.08 -2.72 5.0 1.3 Convex 11.90 12.0 8.0 12.0 0.67 4.13 -3.87 5.9 1.65 Convex 12.18 15.0 12.2 15.0 0.81 7.8 -4.20 7.5 2.0 Plano 24.0 18.0 24.0 0.75 11.2 -6.80 10.4 1.6 Plano 25.0 17.0 25.0 0.68 9.8 -7.20 11.0 2.5 Plano 32.5 23.0 32.5 0.71 14.85 -8.15 12.4 2.5 Plano 35.0 26.2 31.1 0.84 16.4 -9.80 13.9 4.0 Plano 40.0 22.0 38.0 0.58 7.55 -14.45 21.0 2.0 Convex 50.00 45.0 31.18 39.7 0.79 19.36 -11.82 18.0 3.0 Plano 50.0 37.0 47.0 0.79 24.9 -12.10 16.7 2.0 Plano 75.0 50.0 75.0 0.67 30.5 -19.50 30.0 3.0 Plano MgF2 400 450 500 550 600 650 700 0° 3.0 2.0 1.0 0 Reflectance (%) Wavelength (nm) Typical VLH Series Variable Lens Holder see page 673 Availability – Guaranteed on select items @ newport.com
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