Biconcave lens

Biconcave lens
Diameter tolerance +0.00 / -0.12 mm
Thickness tolerance ±0.2 mm
Clear aperture 90%
Surface quality 40 – 20 scratch & dig
Specification
Material MgF2 , ZnSe, BK7, UV fused silica, CaF2

Biconcave lenses characterized by two concave spherical surfaces that curve inward from the center.

biconcave-drawing

Difference from Biconvex Lenses:

  • Shape: Biconcave lenses have two concave surfaces, while biconvex lenses have two convex surfaces.
  • Function: Biconcave lenses diverge light, while biconvex lenses converge light to a focal point.

Applications:

YREMOptics supply biconcave lenses in various fields, including:

  • Ophthalmic products: Some eyeglasses and contact lenses utilize biconcave lenses for vision correction, particularly for treating myopia (nearsightedness).
  • Optical Instruments: Used in microscopes, telescopes, and cameras to diverge light or adjust the beam path.

Biconcave lenses are essential components in optical systems where divergence of light or beam expansion is required. Their ability to diverge light makes them versatile in various applications across different fields. YREMOptics provide biconcave lenses from a variety of materials depending on the specific requirements of the application.