Concavo Convex lens is a lens system that has one side as concave and the other surface as Convex. In this lens system, the convex face has a smaller curvature than the concave face, so that the former tends constantly away from the latter. Concavo-convex lenses are employed in ophthalmic practice in the treatment of errors of refraction. In similar terms, one would get confused on hearing concavo-convex and convexo-concave lens, but in both types, the convexo-concave or concavo-convex, the lens has one convex and one concave side, while for Convexo-concave Len, the concave face has a greater degree of curvature than the convex face. The Concavo-convex has a convex face with a greater degree of curvature than the concave face. More so, the concavo-convex lens is converging because it is thicker at the middle and thinner at the edges allowing it to converge all the light that is incident on it. The focal length of a concavo-convex lens of radii of curvature is about 5 cm and 10 cm is 20 cm. Concavo Convex Lens are meniscus lenses with One side bulging outward while the other side is concave bulging inward towards the system. These two lenses happen to be thicker in the middle than at the outside edges. Compared to many other forms of optical lenses, this lens is rarely offered off the shelf. They are primarily used for focusing on small spot sizes or collimation applications. There are scenarios, though, where Concavo Convex lenses provide significantly superior performance and this comes from many concavo convex lens factory.

Application Of Concave Convex Lens

  • Telephoto Lenses Are Combinations of Convex and Concave Lenses
  •  This lens system is used in camera  as so many lens elements is to correct this aberration to obtain sharp
  • The combination of this lens also is used in contracting aberration in a microscope
  • Correction of low-chromatic-aberration Glass
  • Negative  lenses are used for applications using infrared materials with high refractive index. At Alpine Research Optics we provide the best laser optics windows
  • These lenses are used as an alternative to other negative lenses with a greater curvature on the concave side and a smaller curvature on the convex side
  • They are used in beam expanding applications that require minimal spherical aberration
  • Positive lenses are used in applications that require a small focal number, which is less than 2.5
  • For focal numbers ranging between 2.5 and 10, Concavo Convex lens can minimize spot size and enhance image quality
  • The concave side of the positive lens has a smaller curvature, and the convex side has a greater curvature
  • The lens provides a smaller beam diameter to reduce the beam waist and spherical aberration
  • When a meniscus lens is combined with another lens, the focal length is shortened and the numerical aperture of the system is increased which reduces the image distortion and increases image resolution. At Alpine Research Optics and design research optics loveland coyou get the best lens that have been produced through rigorous research process
  • They are useful for beam-expanding application, which requires minimal spherical aberration

Types Of Concave Convex Lens

Positive Lens

The Concavo Convex lens comes as either a positive or negative lens, the positive lenses have a shorter radius of curvature on the convex side and a longer radius of curvature on the concave side; the edges of these lenses are thicker than the center. They are used to maintain tight beam focus. A positive lens can decrease the focal length of another lens while retaining the angular resolution.

Negative Lens

Negative lens have a Concave and a convex surface, it have a shorter radius of curvature on the concave side and a longer radius of curvature on the convex side. The center of the lens is thicker than its edges. This type of lens is frequently used in place of other negative lenses for high-index infrared materials and is employed for beam-expanding applications.


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