Meniscus Lens
Meniscus Lens
Positive meniscus lens has a positive focal length, which can be used to reduce the focal length of another lens, increase the numerical aperture and other applications.
Negative meniscus lenses have negative focal length and are usually used in beam expansion, focal length increase, numerical aperture reduction and other applications.
Negative meniscus lenses have negative focal length and are usually used in beam expansion, focal length increase, numerical aperture reduction and other applications.
SPECIFICATION
Name | Meniscus Lens |
Material | Fused silica，Optical Glass |
Dimension Tolerance | ±0.1mm, ±0.05mm |
Center Thickness Tolerance | ±0.1mm, ±0.05mm |
Centration | 1′-3′ |
Surface quality | 60/40-20/10 |
Clear Aperture | ≥90% |
Flatness | λ/4, λ/8 |
Bevel | <0.25mmX45° |
Coating | Upon Requirement |
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