λ/4 Meniscus Lenses

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 Flatness: λ/4
  • Materials: BK7 Glass
  • Diameter / Length: 25.4
  • Surface Quality: 40-20 Scratch / Dig
Optical Lenses
from CRYSTECH, Inc.

Lenses have many applications ranging from the simple collection of the scanning of laser beams to precise imaging and image transfer. CRYSTECH provide these lenses for different application. Plano-convex. Positive focus length. Most suitable where one conjugate is more than five times the other,... [See More]

  • Surface Flatness: λ/2 (optional feature); λ/4
  • Materials: BK7 Glass; Calcium Fluoride; Zinc Selenide; Ultra-violet grade Fused Silica
  • Lens Application: Infrared; Visible; Ultraviolet
  • Lens Features: Mounted (optional feature)
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 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)
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 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
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 Flatness: λ/4
  • Materials: BK7 Glass
  • Diameter / Length: 25.4
  • Surface Quality: 40-20 Scratch / Dig
Optical Lenses -- Cylindical
from CRYSTECH, Inc.

Cylindical Lens: Used to provide focusing power in one section only. For illumination or detection of light from line sources. Also used to anamorphic compression of beams and images. [See More]

  • Surface Flatness: λ/2 (optional feature); λ/4
  • Materials: BK7 Glass; Calcium Fluoride; Zinc Selenide; Ultra-violet grade Fused Silica
  • Lens Application: Infrared; Visible; Ultraviolet
  • Lens Features: Mounted (optional feature)
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 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