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Plano-Concave Lenses |
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 Product Information
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Their popular applications are to increase focal lengths in existing systems. They are a more suitable choice than the equivalent equi-concave lens if the magnification lies in the range m<-5 or m>0.2 |
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Specifications |
Material |
Sapphire, Silicon, Gemanium |
Radius |
R≥3.0 |
Surface Finish |
N＜3,△N≥λ/4 |
Centration |
≥1’ |
Diameter |
≥3.0 ±0.01mm |
T/D |
1/10 |
Surface Quality |
20/10 |
Bevel |
0.25mm at 45 deg |
Coating |
Single or Multi-layer films |
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Specifications |
Material |
Fused Silica, Quartz & optical Glass |
Radius |
R≥1.5 |
Surface Finish |
N＜2,△N≥λ/8 |
Centration |
≥1’ |
Diameter |
≥3.0 ±0.01mm |
T/D |
1/10 |
Surface Quality |
20/10 |
Bevel |
0.25mm at 45 deg |
Coating |
Single or Multi-layer films |
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