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Home > Spherical Lens > BK7 Positive Meniscus Lens
Material:BK7 grade A optical glass
Design Wavelength:632.8nm
Focal Length Tolerance:±1%
Diameter Tolerance:+0.0,-0.1mm
Center Thickness:±0.1mm
Surface Figure:λ/4@632.8nm
Surface Quality:40-20 scratch and dig
Centration:3 arc minutes
Clear Aperture:>90%
Bevel:<0.25mm x 45°
Coating:Specified by customer
| BK7 Positive Meniscus Lens |  |
Material:BK7 grade A optical glass Design Wavelength:632.8nm Focal Length Tolerance:±1% Diameter Tolerance:+0.0,-0.1mm Center Thickness:±0.1mm Surface Figure:λ/4@632.8nm Surface Quality:40-20 scratch and dig Centration:3 arc minutes Clear Aperture:>90% Bevel:<0.25mm x 45° Coating:Specified by customer| BK7 Positive Meniscus Lens | |||||||
| Part No. | Dia(mm) | EFL(mm) | R1(mm) | R2(mm) | CT(mm) | ET(mm) | BFL(mm) |
| PMK25100 | 25.40 | 100.00 | 32.13 | 82.15 | 3.60 | 2.00 | 96.19 |
| PMK25125 | 25.40 | 125.00 | 40.61 | 106.94 | 3.30 | 2.00 | 121.54 |
| PMK25150 | 25.40 | 150.00 | 49.07 | 131.59 | 3.10 | 2.00 | 146.78 |
| PMK25200 | 25.40 | 200.00 | 66.15 | 182.18 | 2.80 | 2.00 | 197.12 |
| PMK25250 | 25.40 | 250.00 | 83.36 | 233.87 | 2.60 | 2.00 | 247.35 |
| PMK25300 | 25.40 | 300.00 | 100.90 | 288.30 | 2.50 | 2.00 | 297.47 |
| PMK25400 | 25.40 | 400.00 | 136.54 | 402.38 | 2.40 | 2.00 | 397.61 |
| PMK25500 | 25.40 | 500.00 | 172.92 | 523.88 | 2.30 | 2.00 | 497.74 |
| PMK25110 | 25.40 | 1000.00 | 371.56 | 1330.74 | 2.20 | 2.00 | 997.99 |
| PMK50100 | 50.80 | 100.00 | 30.34 | 65.80 | 9.70 | 1.10 | 89.13 |
| PMK50125 | 50.80 | 125.00 | 39.17 | 92.90 | 8.20 | 2.40 | 116.10 |
| PMK50150 | 50.80 | 150.00 | 47.87 | 119.31 | 7.30 | 2.70 | 142.22 |
| PMK50200 | 50.80 | 200.00 | 65.16 | 171.58 | 6.20 | 2.90 | 193.53 |
| PMK50250 | 50.80 | 250.00 | 82.54 | 224.69 | 5.50 | 3.00 | 244.34 |
| PMK50300 | 50.80 | 300.00 | 100.08 | 279.12 | 5.10 | 3.00 | 294.80 |
| PMK50400 | 50.80 | 400.00 | 135.80 | 393.38 | 5.00 | 3.40 | 394.99 |
| PMK50500 | 50.80 | 500.00 | 172.33 | 515.70 | 5.00 | 3.70 | 495.07 |
| PMK50110 | 50.80 | 1000.00 | 371.50 | 1326.56 | 5.00 | 4.40 | 995.42 |