Plano/Concave & Plano/Convex Lenses
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Cylindrical lenses focus incoming light in one dimension only, such as in transforming a point image into a line image or changing the height of an image without changing its width or vice versa.
RMI Lenses are designed at customer wavelength.
Additionally, both sides can be coated with an RMI high efficiency narrowband, anti-reflective coating or another coating required by the customer's design.
Square Cylindrical Lenses and Double Sided Aplanats are also available-call RMI for a quote.
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RMI Standard Specifications
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| Materials: |
BK7, UVFS, FS, CaF2, MgF2, BaF2, Sapphire, Si, ZnSe, Ge, Cleartran, All Glass, All Crystals |
Surface Figure:
BK7, UVFS, FS:
CaF2, MgF2, BaF2:
ZnSe, ZnS, Ge, Si, Cleartran:
Sapphire (2 grades):
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Both Surfaces
λ/4 at 633 nm
λ/4 at 633 nm
λ/40 at 10.6 µm
λ/10, or λ/4 at 633 nm |
Surface Quality:
BK7, UVFS, FS:
CaF2, MgF2, BaF2:
ZnSe, ZnS, Ge, Si, Cleartran:
Sapphire (2 grades):
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Both Surfaces
10-5
20-10
40-20
20-10 or 60-40 |
| Diameter Tolerance: |
+ 0.000", – 0.025" |
| Thickness Tolerance: |
± 0.025" |
| Focal Length Tolerance: |
± 0.5% |
| Centration Error: |
≤ 3 arc minutes |
| Bevels: |
0.010" – 0.030" at 45º |
| Clear Aperture: |
Central 85% of diameter |
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