N-BK7 Plano Concave Lens With Both Surfaces AR Coating 1000-1700nm

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Wuhan Siwer Optics Co.,Ltd

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N-BK7 Plano Concave Lens With Both Surfaces AR Coating 1000-1700nm

Name: NBK7 Plano Concave Lens With Both Surfaces AR Coating 10001700nm
Brand: Wuhan Siwer Optics
Price: 3 USD

Brand Name : Wuhan Siwer Optics

Place of Origin : Wuhan,China

MOQ : 10 pieces

Price : 3-20USD/piece

Supply Ability : 2000 pieces/month

Delivery Time : 4-5 weeks

Packaging Details : 1.Tissue paper.plastic foam packaging film And hard carton box with quakeproof filler

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

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N-BK7 Plano-Concave Lenses with both surfaces AR Coating 1000-1700nm

These Plano-Concave lenses, which are fabricated from RoHS-compliant N-BK7 glass, have a broadband antireflection coating for the 1050 - 1700 nm range. This coating greatly reduces the 4% losses per surface incurred when using an uncoated lens.
N-BK7 is one of the most common types of optical glass used for high quality optical components. It is typically chosen whenever the additional benefits of UV fused silica (i.e., good transmission further into the UV and a lower coefficient of thermal expansion) are not necessary.
These lenses, like all plano-concave lenses, have negative focal lengths and can be used to diverge collimated beams. In this case, the curved surface of the lens should face the source to minimize spherical aberration. In addition, they can be employed to offset the effects of spherical aberration caused by other lenses in an optical system.

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
Coating	Ravg<0.5%@1000-1700

N-BK7 Plano Concave Lens With Both Surfaces AR Coating 1000-1700nm

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N-BK7 Plano Concave Lens With Both Surfaces AR Coating 1000-1700nm

Product Tags:

pcv lens

concave meniscus lens

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