PRECISION OPTICAL FLATS - Tower Optical - #1

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Precision Optical Flats 21 561-740-2525 • Fax 561-740-2518 sales@TowerOptical.com • www.TowerOptical.com Cage Code: 1N2U3 SDVO-SB ITAR Compliant Precision optical flats are fused silica optical components that are used as a reference against which the flatness of an unknown surface can be determined. For less demanding jobs Tower ofers them made from BK7 with a flatness specified as ë/4 or better. These optical flats may also be used as windows. Specifications for single and dual surface optical flats Material: BK7 fused silica Exp. coefficient: 7.1x10-6/°C 0.55x10-6/°C Surface quality: 60/40 Parallelism: <1 arc minute Back surface (single): 1-2
@633nm Diameter tolerance: ± 1 mm Thickness tolerance: ± 1.5 mm Single Sided and Double Sided Optical Flats • Fused silica • Flatness of ë/10 or ë/20 • Single and double sided • Easy to use • From 25 mm to 200 mm • Precision ground and polished • BK7 available at lower cost Diameter Thickness Material Single or Lambda/10 Lambda/20 (mm) (mm) Dual Surface Catalog No. Price Catalog No. Price 25 12.5 Fused Silica Single 4542-0002 $140.00 4542-0022 call for price 25 12.5 Fused Silica Dual 4542-0004 $240.00 50 15 Fused Silica Single 4542-0006 $400.00 4542-0024 call for price 50 15 Fused Silica Dual 4542-0008 $520.00 100 20 Fused Silica Single 4542-0010 $680.00 4542-0026 call for price 100 20 Fused Silica Dual 4542-0012 $860.00 150 25 Fused Silica Single 4542-0014 $1,447.00 150 25 Fused Silica Dual 4542-0016 $1,630.00 200 38 Fused Silica Single 4542-0018 $2,872.00 200 38 Fused Silica Dual 4542-0020 $3,052.00 Lambda/4 or better 25 12.5 BK7 Single 4542-0001 $75.00 25 12.5 BK7 Dual 4542-0003 $83.00 50 15 BK7 Single 4542-0005 $75.00 50 15 BK7 Dual 4542-0007 $100.00 100 20 BK7 Single 4542-0009 $215.00 100 20 BK7 Dual 4542-0011 $300.00 150 25 BK7 Single 4542-0013 $450.00 150 25 BK7 Dual 4542-0015 $580.00 200 38 BK7 Single 4542-0017 $800.00 200 38 BK7 Dual 4542-0019 $1,200.00 If a carrying case is required order CASE-S for up to 100 mm for $20, and CASE-L for 150 & 200 mm for $50 Custom versions also available