Product Description

BK7 Double-Concave Lenses

Specifications:

Material: BK7 Grade A Optical Glass
Design Wavelength: 546.1nm
Design Index: 1.5183±0.0005
Diameter Tolerance: +0.0, -0.15mm
Paraxial Focal Length: ±2%
Centration: 3 arc minutes
Clear Aperture: >80%
Surface Figure: l/[email protected]
Surface Quality: 60-40 scratch and dig
Protective Bevel

Part No. f(mm) (mm) R 1 (mm) t c (mm) t e (mm) f b (mm)
DCV0207 -10.0 10.0 10.70 2.0 4.5 -10.6
DCV0201 -15.0 12.7 15.88 2.0 4.6 -15.6
DCV0202 -20.0 12.7 21.07 2.0 4.0 -20.6
DCV0203 -25.0 12.7 26.25 2.0 3.6 -25.7
DCV0204 -30.0 12.7 31.44 2.0 3.3 -30.7
DCV0205 -40.0 12.7 41.80 2.0 3.0 -40.7
DCV0206 -50.0 12.7 52.17 2.0 2.8 -50.7
DCV0301 -35.0 25.4 36.62 2.0 6.5 -35.7
DCV0302 -50.0 25.4 52.17 2.0 5.1 -50.7
DCV0303 -75.0 25.4 78.09 2.0 4.1 -75.7
DCV0304 -100.0 25.4 104.00 2.0 3.6 -100.7
DCV0305 -125.0 25.4 129.92 2.0 3.2 -125.7
DCV0306 -150.0 25.4 155.83 2.0 3.0 -150.7
DCV0307 -175.0 25.4 181.75 2.0 2.9 -175.7
DCV0308 -200.0 25.4 207.66 2.0 2.8 -200.7
DCV0309 -250.0 25.4 259.49 2.0 2.6 -250.7
DCV0310 -300.0 25.4 311.32 2.0 2.5 -300.7
DCV0311 -500.0 25.4 518.64 2.0 2.3 -500.7
DCV0312 -1000.0 25.4 1036.94 2.0 2.2 -1000.7
DCV0401 -50.0 38.0 52.34 3.0 10.1 -51.0
DCV0402 -100.0 38.0 104.17 3.0 6.5 -101.0
DCV0403 -150.0 38.0 156.00 3.0 5.3 -151.0
DCV0404 -200.0 38.0 207.83 3.0 4.7 -201.0
DCV0405 -350.0 38.0 363.32 3.0 4.0 -351.0
DCV0406 -500.0 38.0 518.81 3.0 3.7 -501.0
DCV0407 -700.0 38.0 726.13 3.0 3.5 -701.0
DCV0501 -100.0 50.0 104.17 3.0 9.1 -101.0
DCV0502 -150.0 50.0 156.00 3.0 7.0 -151.0
DCV0503 -200.0 50.0 207.83 3.0 6.0 -201.0
DCV0504 -250.0 50.0 259.66 3.0 5.4 -251.0
DCV0505 -400.0 50.0 415.15 3.0 4.5 -401.0
DCV0506 -450.0 50.0 466.91 3.0 4.3 -451.0
DCV0507 -500.0 50.0 518.82 3.0 4.2 -501.0
DCV0508 -600.0 50.0 622.47 3.0 4.0 -601.0
DCV0509 -800.0 50.0 829.73 3.0 3.8 -801.0

Other sizes and coating are available upon request. Larger quantity factory pricing also available.