40-20 Scratch / Dig Meniscus Lenses

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 Lenses -- LMS-254-R515-R1000-BK7
from CASTECH, Inc.

Other sizes and focal length are available upon request. Also the lens ring mounts are available upon request. [See More]

  • Surface Quality: 40-20 Scratch / Dig
  • Materials: BK7 Glass
  • Diameter / Length: 25.4
  • Surface Flatness: λ/4
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
Negative Meniscus Lenses -- LNS-254-R950-R459-BK7
from CASTECH, Inc.

Other sizes and focal length are available upon request. Also the lens ring mounts are available upon request. [See More]

  • Surface Quality: 40-20 Scratch / Dig
  • Materials: BK7 Glass
  • Diameter / Length: 25.4
  • Surface Flatness: λ/4
Zinc Selenide (ZnSe) Lenses
from EKSMA OPTICS

Zinc selenide (ZnSe) is the most popular material for infrared applications. Due to a very wide transmission range covering 0.6-22 µm chemical vapor deposition grown ZnSe as a high optical quality material is used to manufacture optical components (windows, mirrors, lenses) for high power IR... [See More]

  • Surface Quality: 40-20 Scratch / Dig
  • Diameter / Length: 12.7 to 76.2
  • Focal Length: 25.4 to 254