60-40 Scratch / Dig Meniscus Lenses

Spheric Lens
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 Quality: 10-5 Scratch / Dig; 60-40 Scratch / Dig
  • Surface Flatness: λ/4; <1.5?
  • Materials: BK7 Glass; Calcium Fluoride; Sapphire; H-K9, Fused Silica, N-SF10, Silicon
  • Lens Features: Antireflection Coating (optional feature)
Precision Meniscus Concave-Convex Lenses -- G930
from Gurley Precision Instruments

Used to change the focal length of another lens, The lens shape does not intriduce more spherical aberrations to the system [See More]

  • Surface Quality: 60-40 Scratch / Dig
  • Edge Thickness: 1.4
  • Center Thickness: 4
  • Focal Length: 50
Meniscus Cylindrical Lens
from BRD Optical Co., 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 Quality: 20-10 Scratch / Dig; 40-20 Scratch / Dig; 60-40 Scratch / Dig
  • Center Thickness: 2 to 20
  • Lens Application: Visible
  • Materials: Sapphire; Optical Glass, Fused Silica
Meniscus Lens / Optical Components
from BRD Optical Co., 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 Quality: 20-10 Scratch / Dig; 40-20 Scratch / Dig; 60-40 Scratch / Dig
  • Focal Length: -2000 to -50
  • Center Thickness: 2 to 20
  • Diameter / Length: 2 to 300
Steinheil Triplets -- L-AST001
from Ross Optical Industries

The Steinheil triplets are made of a low index crown element cemented in between two identical meniscus flint elements. Specially designed for 1:1 conjugation, they perform well for conjugate ratios up to 5. These lenses make good relay optics for both on- and off-axis application and are often used... [See More]

  • Surface Quality: 60-40 Scratch / Dig
  • Center Thickness: 5.2
  • Lens Application: Infrared (optional feature); Visible; Ultraviolet (optional feature)
  • Edge Thickness: 3.2