PLANO CONCAVE LENSES - Tower Optical - #1

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25 Plano Concave Lenses Tower Optical’s plano concave lenses have a negative focal length, diverge collimated incident light, and form only virtual images which are seen through the lens. They are often used to expand light beams or increase focal lengths in existing systems. They are widely used in telescopes, collimaters, optical transceivers, magnifiers, radiometers and condensers. Please check with Tower for availability. Specifications Material: BK7, grade A, fine anneal, or K9 substitute Design wavelength: 632.8 nm Diameter tolerance: +0/-0.10 mm Focal length tolerance: ±1% Centering: ±3 arc minutes Clear aperture: 90% of diameter Surface quality: 60-40 Scratch-Dig Bevel: 0.25 mm x 45° Coating: none Call us for quantity pricing. Part No. Dia. EFL R1 R2 CT ET BFL Price Number (mm) (mm) (mm) (mm) (mm) (mm) (mm) each LNCV001 6 -18 -9.26 �‡ 2 2.5 -19.32 18 LNCV002 6 -24 -12.35 �‡ 2 2.37 -25.32 18 LNCV003 12.7 -25 -12.87 �‡ 3 4.68 -26.98 19 LNCV004 12.7 -30 -15.44 �‡ 3 4.37 -31.98 19 LNCV005 12.7 -50 -25.73 �‡ 3.5 4.3 -52.31 19 LNCV006 25.4 -50 -25.7 �‡ 3.5 6.9 -52.3 22 LNCV007 25.4 -75 -38.6 �‡ 3.5 5.65 -77.31 22 LNCV008 25.4 -100 -51.46 �‡ 4 5.59 -102.64 22 LNCV009 50.8 -75 -38.6 �‡ 3.5 13.04 -77.31 29 LNCV010 50.8 -100 -51.46 �‡ 4 10.71 -102.64 29 LNCV011 50.8 -150 -77.19 �‡ 4 8.3 -31.97 29 561-740-2525 • Fax 561-740-2518 sales@TowerOptical.com • www.TowerOptical.com Cage Code: 1N2U3 SDVO-SB ITAR Compliant