λ/4 Meniscus Lenses
from CRYSTECH, Inc.
CRYSTECH is dedicated to manufacturing high precision spherical lens for solid-state leaser systems. We have over 20 years of experience in lens manufacturing, design, and coating. We provide these lenses with the material of BK7, fused silica, sapphire, CaF2, ZnSe(ZnS) and other glass raw material. [See More]
- Surface Flatness: λ/2 (optional feature); λ/4
- Materials: BK7 Glass; Calcium Fluoride; Sapphire; Zinc Selenide; Ultra-violet grade Fused Silica
- Lens Application: Infrared; Visible
- Lens Features: Mounted (optional feature)
from CASTECH, Inc.
Other sizes and focal length are available upon request. Also the lens ring mounts are available upon request. [See More]
- Surface Flatness: λ/4
- Materials: BK7 Glass
- Diameter / Length: 25.4
- Surface Quality: 40-20 Scratch / Dig
from CASTECH, Inc.
Other sizes and focal length are available upon request. Also the lens ring mounts are available upon request. [See More]
- Surface Flatness: λ/4
- Materials: BK7 Glass
- Diameter / Length: 25.4
- Surface Quality: 40-20 Scratch / Dig
from Foctek Photonics, Inc.
FOCtek provides five kinds of spheric lens forms, or shapes, that determine the imaging Characteristics. of the lenses, they are plano-convex, plano-concave, Double-convex, Double-concave and Meniscus. Plano-convex lens has a positive focal length, which makes it ideal for collecting and focusing... [See More]
- Surface Flatness: λ/4; <1.5?
- Surface Quality: 10-5 Scratch / Dig; 60-40 Scratch / Dig
- Materials: BK7 Glass; Calcium Fluoride; Sapphire; H-K9, Fused Silica, N-SF10, Silicon
- Lens Features: Antireflection Coating (optional feature)
from ECOPTIK (CHANGCHUN) LTD
Meniscus Cylindrical Lens can increase the NA of the system while only adding slightly to the total spherical aberrations. The Negative Meniscus Lens is used to increase the focal length of another lens while maintaining the angular resolution of the optical assembly. This lens shape is best used... [See More]
- Surface Flatness: λ/2; λ/4; λ/5; λ/8; λ/10
- Center Thickness: 2 to 20
- Lens Application: Visible
- Materials: Sapphire; Optical Glass, Fused Silica
from ECOPTIK (CHANGCHUN) LTD
BRD Optical provide meniscus lens in both positive and negative focal lengths. These lenses are useful when used with another lenses to increase or decrease the focal length. This lens element configuration does not introduce any additional coma or spherical aberrations [See More]
- Surface Flatness: λ/2; λ/4; λ/5; λ/8; λ/10
- Focal Length: -2000 to -50
- Center Thickness: 2 to 20
- Diameter / Length: 2 to 300