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Page 4 - BK7 Spherical

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, ...

Specifications

Material: BK7
Diameter: 50.8 mm
Focal Length: -150 mm
Edge Thickness, Te: 8.3 mm
Lens Type: Plano-Concave
Material BK7 or UV Fused Silica Dimension Tolerance +0/-0.2mm Thickness Tolerance ±0.2mm Design Wavelength 546.1nm Surface Quality 60/40 scratch and dig Flatness λ/4@632.8nm Centration <3 arc minutes Focal Length Tolerance ±2% Clear Aperture >90% Chamfer Protective <0.5mmx45deg

Specifications

Material: BK7, FS, UVFS, H-K9L
Diameter: 25.4 mm
Focal Length: -100 mm
Edge Thickness, Te: 2 mm
Lens Type: Bi-Concave
Dimension Tolerance +0/-0.2mm Thickness Tolerance ±0.2mm Design Wavelength 546.1nm Surface Quality 60/40 scratch and dig Flatness λ/4@632.8nm Centration Focal Length Tolerance ±2% Clear Aperture >90% Chamfer Protective 

Specifications

Material: BK7, FS, UVFS, H-K9L
Diameter: 25.4 mm
Focal Length: 100 mm
Edge Thickness, Te: 2 mm
Lens Type: Bi-Convex
Dimension Tolerance +0/-0.2mm Thickness Tolerance ±0.2mm Design Wavelength 546.1nm Surface Quality 60/40 scratch and dig Flatness λ/4@632.8nm Centration Focal Length Tolerance ±2% Clear Aperture >90% Chamfer Protective

Specifications

Material: BK7, FS, UVFS, H-K9L
Diameter: 25.4 mm
Focal Length: -100 mm
Edge Thickness, Te: 2 mm
Lens Type: Plano-Concave
Dimension Tolerance +0/-0.2mm Thickness Tolerance ±0.2mm Design Wavelength 546.1nm Surface Quality 60/40 scratch and dig Flatness λ/4@632.8nm Centration Focal Length Tolerance ±2% Clear Aperture >90% Chamfer Protective

Specifications

Material: BK7, FS, UVFS, H-K9L
Diameter: 25.4 mm
Focal Length: 100 mm
Edge Thickness, Te: 2 mm
Lens Type: Plano-Convex
Lens can converge or diverge the transmission beam and form image of the object, Which is widely used in various applications. Union Optic can provide all kinds of spherical and cylindrical lenses, usually we can offer. Spherical: plano-convex, plano-concave, double-convex, double-concave, meniscus, dome lens, rod lens, ball lens, ...

Specifications

Material: BK7, FS, UVFS, CaF2, ZnSe, Si, Ge, H-K9L, BaF2, MgF2, H-ZF13
Diameter: 25.4 mm
Focal Length: 100 mm
Edge Thickness, Te: 2 mm
Lens Type: Plano-Convex, Plano-Concave, Bi-Convex, Bi-Concave
Ball Lenses are commonly used to improve signal quality in fiber coupling applications, or for use in endoscopy or bar code scanning applications. Ball Lenses feature short back focal lengths to minimize the distance needed from the Ball Lens to the optical fiber. The focal length can be calculated as the following equation: f= ...

Specifications

Material: BK7
Diameter: 5.0 mm
Focal Length: 3.7 mm
Edge Thickness, Te: 0 mm
Lens Type: Bi-Convex