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Tower Optical’s plano convex lenses have positive focal lengths, converge incident light, and form both real images  (as might be focused in a piece of paper), and virtual images (as are seen through the lenses when they are used as magnifiers). They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 25.4 mm
  • Focal Length: 30 mm
  • Edge Thickness, Te: 2.0 mm
  • Lens Type: Plano-Convex
Data Sheet
Tower Optical’s plano convex lenses have positive focal lengths, converge incident light, and form both real images  (as might be focused in a piece of paper), and virtual images (as are seen through the lenses when they are used as magnifiers). They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 25.4 mm
  • Focal Length: 25.4 mm
  • Edge Thickness, Te: 1.8 mm
  • Lens Type: Plano-Convex
Data Sheet
Tower Optical’s plano convex lenses have positive focal lengths, converge incident light, and form both real images  (as might be focused in a piece of paper), and virtual images (as are seen through the lenses when they are used as magnifiers). They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 12.7 mm
  • Focal Length: 100 mm
  • Edge Thickness, Te: 1.8 mm
  • Lens Type: Plano-Convex
Data Sheet
Tower Optical’s plano concave lenses have a negative focal length, diverge collimated incident light, and form only virtual images which are seen through the lens. They are often used to expand light beams or increase focal lengths in existing systems. They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 50.8 mm
  • Focal Length: -150 mm
  • Edge Thickness, Te: 8.3 mm
  • Lens Type: Plano-Concave
Data Sheet
Bi Convex Lenses LNBX037
Tower Optical Corporation
Bi Convex spherical lenses by Tower Optical Corporation.
  • Material: BK7
  • Diameter: 50.8 mm
  • Focal Length: 175 mm
  • Edge Thickness, Te: 3 mm
  • Lens Type: Bi-Convex
Data Sheet
Bi Convex Lenses LNBX036
Tower Optical Corporation
Bi Convex spherical lenses by Tower Optical Corporation.
  • Material: BK7
  • Diameter: 50.8 mm
  • Focal Length: 150 mm
  • Edge Thickness, Te: 3 mm
  • Lens Type: Bi-Convex
Data Sheet
Bi Convex Lenses LNBX035
Tower Optical Corporation
Bi Convex spherical lenses by Tower Optical Corporation.
  • Material: BK7
  • Diameter: 50.8 mm
  • Focal Length: 125 mm
  • Edge Thickness, Te: 3 mm
  • Lens Type: Bi-Convex
Data Sheet
Tower Optical’s plano convex lenses have positive focal lengths, converge incident light, and form both real images  (as might be focused in a piece of paper), and virtual images (as are seen through the lenses when they are used as magnifiers). They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 12.7 mm
  • Focal Length: 50 mm
  • Edge Thickness, Te: 1.8 mm
  • Lens Type: Plano-Convex
Data Sheet
Tower Optical’s plano convex lenses have positive focal lengths, converge incident light, and form both real images  (as might be focused in a piece of paper), and virtual images (as are seen through the lenses when they are used as magnifiers). They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 12.7 mm
  • Focal Length: 40 mm
  • Edge Thickness, Te: 1.8 mm
  • Lens Type: Plano-Convex
Data Sheet
Tower Optical’s plano convex lenses have positive focal lengths, converge incident light, and form both real images  (as might be focused in a piece of paper), and virtual images (as are seen through the lenses when they are used as magnifiers). They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 12.7 mm
  • Focal Length: 30 mm
  • Edge Thickness, Te: 1.8 mm
  • Lens Type: Plano-Convex
Data Sheet
Tower Optical’s plano convex lenses have positive focal lengths, converge incident light, and form both real images  (as might be focused in a piece of paper), and virtual images (as are seen through the lenses when they are used as magnifiers). They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 12.7 mm
  • Focal Length: 25 mm
  • Edge Thickness, Te: 1.8 mm
  • Lens Type: Plano-Convex
Data Sheet
Tower Optical’s plano convex lenses have positive focal lengths, converge incident light, and form both real images  (as might be focused in a piece of paper), and virtual images (as are seen through the lenses when they are used as magnifiers). They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 12.7 mm
  • Focal Length: 20 mm
  • Edge Thickness, Te: 1.8 mm
  • Lens Type: Plano-Convex
Data Sheet
Tower Optical’s plano convex lenses have positive focal lengths, converge incident light, and form both real images  (as might be focused in a piece of paper), and virtual images (as are seen through the lenses when they are used as magnifiers). They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 12.7 mm
  • Focal Length: 15 mm
  • Edge Thickness, Te: 1.8 mm
  • Lens Type: Plano-Convex
Data Sheet
Tower Optical’s plano convex lenses have positive focal lengths, converge incident light, and form both real images  (as might be focused in a piece of paper), and virtual images (as are seen through the lenses when they are used as magnifiers). They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 6 mm
  • Focal Length: 30 mm
  • Edge Thickness, Te: 1.5 mm
  • Lens Type: Plano-Convex
Data Sheet
Tower Optical’s plano convex lenses have positive focal lengths, converge incident light, and form both real images  (as might be focused in a piece of paper), and virtual images (as are seen through the lenses when they are used as magnifiers). They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 6 mm
  • Focal Length: 15 mm
  • Edge Thickness, Te: 1.5 mm
  • Lens Type: Plano-Convex
Data Sheet
Tower Optical’s plano convex lenses have positive focal lengths, converge incident light, and form both real images  (as might be focused in a piece of paper), and virtual images (as are seen through the lenses when they are used as magnifiers). They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 6 mm
  • Focal Length: 12 mm
  • Edge Thickness, Te: 1.5 mm
  • Lens Type: Plano-Convex
Data Sheet
Tower Optical’s plano convex lenses have positive focal lengths, converge incident light, and form both real images  (as might be focused in a piece of paper), and virtual images (as are seen through the lenses when they are used as magnifiers). They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 6 mm
  • Focal Length: 10 mm
  • Edge Thickness, Te: 1.5 mm
  • Lens Type: Plano-Convex
Data Sheet
Tower Optical’s plano concave lenses have a negative focal length, diverge collimated incident light, and form only virtual images which are seen through the lens. They are often used to expand light beams or increase focal lengths in existing systems. They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 50.8 mm
  • Focal Length: -100 mm
  • Edge Thickness, Te: 10.71 mm
  • Lens Type: Plano-Concave
Data Sheet
Tower Optical’s plano concave lenses have a negative focal length, diverge collimated incident light, and form only virtual images which are seen through the lens. They are often used to expand light beams or increase focal lengths in existing systems. They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 50.8 mm
  • Focal Length: -75 mm
  • Edge Thickness, Te: 13.04 mm
  • Lens Type: Plano-Concave
Data Sheet
Tower Optical’s plano concave lenses have a negative focal length, diverge collimated incident light, and form only virtual images which are seen through the lens. They are often used to expand light beams or increase focal lengths in existing systems. They are widely used in telescopes, collimators, optical transceivers, ...
  • Material: BK7
  • Diameter: 25.4 mm
  • Focal Length: -75 mm
  • Edge Thickness, Te: 5.56 mm
  • Lens Type: Plano-Concave
Data Sheet

Did You know?

The earliest known lenses were made from polished crystal, often quartz, and have been dated as early as 750 BC. The focal length of a lens is the measure of the power of the lens. Lenses work on the principle of refraction and can be of Convex, Concave as well as of Compound type. They have several applications in Binoculars, Telescopes, Electron Microscopes, Movie Projectors, Cameras and Data Storage Media. It’s interesting that Lighthouses use amazing Fresnel lenses. Until the advent of plastics, they were manufactured with grinding solid glass which have been replaced with more refined optical class.