Meniscus Lens - Positive BK7
- Plano Convex Lens - BK7
- Double Convex Lens - BK7
- Plano Convex Lens - Fused Silica
- Double Convex Lens - Fused Silica
- Plano Concave Lens - BK7
- Double Concave Lens -BK7
- Plano Concave Lens - Fused Silica
- Double Concave Lens - Fused Silica
- Meniscus Lens - Positive BK7
- Meniscus Lens - Negative BK7
- Achromatic Lens - Possive
- Achromatic Lens - Negative
- Cylindrical Lens - BK7
- Cylindrical Lens - Fused Silica
- Plano Concave Lens - CaF2
- Plano Convex Lens - CaF2
- Plano Convex Lens - Sapphire Lenses
- Plano Concave Lens - Sapphire
The Positive Meniscus Lenses are a convex-concave lens, but is thicker at the center than at the edges. They are felt polished and are used universally in the ophthalmic industry where convention dictates that lens power be specified in Diopters.
Specifications of Mensiscus Lens:
| Material: | BK7 |
| Design Wavelength: | 546.1nm, n=1.518721 |
| Diameter Tolerance: | +0.0/-0.1mm |
| Paraxial Focal Length: | ±2% |
| Centration: | 3 arc minutes |
| Surface Figure : | l/4 @ 633 nm |
| Surface Quality: | 60/40 |
| Clear Aperture: | >80% |
| Bevel: | <0.25mm X 45° |
| Coating: | Uncoated |
| Item# | F(mm) | f(mm) | R1 | R2 | Tc | Te | Fb |
| MNP1-201 | 25.4 | 100.0 | 33.42 | 89.95 | 4.0 | 2.39 | 96.01 |
| MNP1-202 | 25.4 | 150.0 | 42.36 | 89.95 | 4.0 | 2.95 | 145.20 |
| MNP1-203 | 25.4 | 200.0 | 48.75 | 89.95 | 3.5 | 2.72 | 194.51 |
| MNP1-204 | 25.4 | 250.0 | 83.95 | 235.5 | 3.5 | 2.88 | 245.97 |
| MNP1-205 | 25.4 | 300.0 | 94.19 | 235.5 | 3.5 | 2.98 | 296.27 |
| MNP1-206 | 25.4 | 400.0 | 110.92 | 235.5 | 3.5 | 3.11 | 396.06 |
| MNP1-207 | 25.4 | 500.0 | 124.17 | 235.5 | 3.5 | 3.19 | 496.16 |
| MNP1-208 | 25.4 | 1000.0 | 278.34 | 600.00 | 3.5 | 3.30 | 993.7 |
