Double Concave Lens
Double Concave Lens
Double concave lens has a negative focal length and is used to diverge a beam of parallel light. Composed of two concave surfaces with equal curvature, it is often used for beam expansion of lenses, projection and focal length of optical systems. Hua Jing can provide different types of double concave lens
SPECIFICATION
Name | Double Concave 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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Plano Concave Lens
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Meniscus Lens