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UV Fused Silica Double Convex DCX Lens

UV Fused Silica Double Convex DCX Lens

Regular price $26.00 USD
Regular price Sale price $26.00 USD
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Common Specifications

Material UV FS
Surface quality 40-20 scratch & dig
Clear aperture 90% of the diameter
Diameter tolerance +0.00, -0.12 mm
Thickness tolerance ±0.2 mm
Surface irregularity λ /8 @ 633 nm
Concentricity 3 arcmin
Paraxial focal length ±2% @ 355 nm

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What is a Double Convex Lens?

  • A double convex lens is a lens that has two spherical surfaces that bulge outwards.
  • It is also called a bi-convex lens or a converging lens because it bends parallel light rays towards a single point called the focal point.
  • It is one of the most common and useful types of lenses in optical devices such as eyeglasses, telescopes, microscopes, cameras and magnifying glasses.

Te: edge thickness

Tc: center thickness

They depend on the diameter, radius of curvature and material of the lens.

Major Specifications of Double Convex Lense

The main specifications of a double convex lens are:

  • Diameter: The distance across the lens at its widest point.
  • Focal length: The distance from the center of the lens to the focal point where parallel rays converge.
  • Radius of curvature: The radius of the sphere that forms each surface of the lens.
  • Material: The type of glass or plastic that the lens is made of, which affects its refractive index and transmittance.
  • Surface quality: The smoothness and accuracy of the lens surfaces, which affects its optical performance and clarity.
  • Antireflection coating: A thin layer of material applied to the lens surfaces to reduce unwanted reflections and increase light transmission.

Common Coatings for Double Convex Lense

  • Uncoated: No coating is applied to the lens surfaces. This is suitable for low-power applications where reflections are not a major concern.
  • 245-440 nm: A coating that enhances transmission in the ultraviolet (UV) range. This is suitable for UV applications such as fluorescence microscopy or spectroscopy.
  • 430-700 nm: A coating that enhances transmission in the visible range. This is suitable for general-purpose applications such as imaging or illumination.
  • 650-1000 nm: A coating that enhances transmission in the near-infrared (NIR) range. This is suitable for NIR applications such as laser diode collimation or thermal imaging.
  • 1000-1550 nm: A coating that enhances transmission in the infrared (IR) range. This is suitable for IR applications such as fiber optics or telecommunications.
  • 1064 nm: A coating that enhances transmission at a specific wavelength of 1064 nm. This is suitable for applications involving Nd:YAG lasers or harmonic generation.

Double Convex VS Plano Convex

The advantages of using a double convex lens instead of a plano convex lens are:

  • Spherical aberration is minimized, which means that the image quality is improved and less distorted.
  • Coma, distortion and chromatic aberration are identically canceled due to the symmetry of the lens, which means that the image is more accurate and uniform across the field of view.
  • The lens performs well at conjugate ratios between 5:1 and 1:5, which means that it can be used for a wide range of object and image distances.
  • The lens is the best choice when the object and image are at equal or near equal distance from the lens, which means that it can be used for applications such as relay imaging or beam expansion.

*Plano-convex lens, however, has less spherical aberration than a double convex lens when the object or image is at infinity, because the flat surface minimizes the deviation of the light rays

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Variant Variant total Quantity Price Variant total
D=20 FL=43.4 AR1030-1080nm
D=20 FL=43.4 AR1030-1080nm
$26.00/ea
$0.00
$26.00/ea $0.00
D=20 FL=42.3 AR1030-1080nm
D=20 FL=42.3 AR1030-1080nm
$26.00/ea
$0.00
$26.00/ea $0.00
D=25 FL=64.9 AR780-830nm
D=25 FL=64.9 AR780-830nm
$26.00/ea
$0.00
$26.00/ea $0.00
D=30 FL=113.8 uncoated
D=30 FL=113.8 uncoated
$41.00/ea
$0.00
$41.00/ea $0.00
D=34 FL=145.5 AR1064nm
D=34 FL=145.5 AR1064nm
$41.00/ea
$0.00
$41.00/ea $0.00
D=35 FL=41 uncoated
D=35 FL=41 uncoated
$41.00/ea
$0.00
$41.00/ea $0.00
D=83 FL=380 uncoated
D=83 FL=380 uncoated
$284.00/ea
$0.00
$284.00/ea $0.00
D=85 FL=300 uncoated
D=85 FL=300 uncoated
$284.00/ea
$0.00
$284.00/ea $0.00
D=85 FL=500 uncoated
D=85 FL=500 uncoated
$284.00/ea
$0.00
$284.00/ea $0.00

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