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Page 5 - Fresnel

Fresnel lenses consist of a flat surface with interspaced, concentric steps whereby each step corresponds to the surface of a conventional lens. Each step thereby acts as a refractive surface, much like a prism. This gives the fresnel lens a common focal length equivalent to a traditional lens, but with a fraction ...

Specifications

Material: PMMA Acrylic
Lens Type: Spherical
Focal Length: 500 mm
Facet Spacing: 0.5 mm
Clear Aperture: 500 mm
Fresnel lenses consist of a flat surface with interspaced, concentric steps whereby each step corresponds to the surface of a conventional lens. Each step thereby acts as a refractive surface, much like a prism. This gives the fresnel lens a common focal length equivalent to a traditional lens, but with a fraction ...

Specifications

Material: PMMA Acrylic
Lens Type: Spherical
Focal Length: 400 mm
Facet Spacing: 0.5 mm
Clear Aperture: 400 mm
Fresnel lenses consist of a flat surface with interspaced, concentric steps whereby each step corresponds to the surface of a conventional lens. Each step thereby acts as a refractive surface, much like a prism. This gives the fresnel lens a common focal length equivalent to a traditional lens, but with a fraction ...

Specifications

Material: PMMA Acrylic
Lens Type: Spherical
Focal Length: 600 mm
Facet Spacing: 0.5 mm
Clear Aperture: 600 mm
Fresnel lenses consist of a flat surface with interspaced, concentric steps whereby each step corresponds to the surface of a conventional lens. Each step thereby acts as a refractive surface, much like a prism. This gives the fresnel lens a common focal length equivalent to a traditional lens, but with a fraction ...

Specifications

Material: PMMA Acrylic
Lens Type: Spherical
Focal Length: 300 mm
Facet Spacing: 0.5 mm
Clear Aperture: 300 mm
Fresnel lenses consist of a flat surface with interspaced, concentric steps whereby each step corresponds to the surface of a conventional lens. Each step thereby acts as a refractive surface, much like a prism. This gives the fresnel lens a common focal length equivalent to a traditional lens, but with a fraction of the thickness. ...

Specifications

Material: PMMA Acrylic
Lens Type: Spherical
Focal Length: 275 mm
Facet Spacing: 0.5 mm
Clear Aperture: 400 mm
Fresnel lenses consist of a flat surface with interspaced, concentric steps whereby each step corresponds to the surface of a conventional lens. Each step thereby acts as a refractive surface, much like a prism. This gives the fresnel lens a common focal length equivalent to a traditional lens, but with a fraction of the thickness. ...

Specifications

Material: PMMA Acrylic
Lens Type: Spherical
Focal Length: 100 mm
Facet Spacing: 0.5 mm
Clear Aperture: 200 mm
Fresnel lenses consist of a flat surface with interspaced, concentric steps whereby each step corresponds to the surface of a conventional lens. Each step thereby acts as a refractive surface, much like a prism. This gives the fresnel lens a common focal length equivalent to a traditional lens, but with a fraction of the thickness. ...

Specifications

Material: PMMA Acrylic
Lens Type: Spherical
Focal Length: 20 mm
Facet Spacing: 0.5 mm
Clear Aperture: 100 mm