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Uncoated N-BK7 Plano Concave Lens With High Homogeneity And Low Bubble

Basic Information
Place of Origin: Wuhan,China
Brand Name: Wuhan Siwer Optics
Minimum Order Quantity: 10 pieces
Price: 3-20USD/piece
Packaging Details: 1.Tissue paper.plastic foam packaging film And hard carton box with quakeproof filler
Delivery Time: 4-5 weeks
Supply Ability: 2000 pieces/month
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Detail Information
Material: BK7 Type: Plano Concave
Diameter Range: 4-260mm Demension Tolerance: +/-0.1mm
Surface Quality: 40/20 Surface Accuracy: Lambda/4 In 25.4mm
Centration: 3 Arc Min Usage: Optical System
Coating: Customized

Product Description

N-BK7 Plano-Concave Lenses, Uncoated

Our N-BK7 Plano-Concave lenses are available uncoated or coated with a variety of multi-layer antireflection coatings. All lenses feature λ/4 surface accuracy and 40-20 scratch-dig surface quality. N-BK7 is an excellent lens material for most visible and NIR applications. It provides great performance at a good value with its high homogeneity, low bubble and inclusion content and straightforward manufacturability.

 

Common Specifications
Lens Shape Plano-Concave
Substrate Material N-BK7 or H-K9L
Wavelength Range 350 nm - 2.0 µm
Diameter Tolerance +0.0/-0.1 mm
Thickness Tolerance ±0.1 mm
Focal Length Tolerance ±1%
Design Wavelength 587.6 nm
Index of Refraction@ 633 nm 1.515
Surface Quality 40-20 Scratch-Dig
Surface Flatness(Plano Side) λ/2
Spherical Surface Accuracy (Concave Side) 3λ/2
Surface Irregularity(Peak to Valley) λ/4
Abbe Number vd = 64.17
Centration <3 arcmin
Clear Aperture >90% of Diameter

 

Uncoated N-BK7 Plano Concave Lens With High Homogeneity And Low Bubble

Production Line

Uncoated N-BK7 Plano Concave Lens With High Homogeneity And Low Bubble

 

Contact Details
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