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N-BK7 Or H-K9L Material Optical Double Convex Lens 400-700nm AR Coating

Categories Double Convex Lens
Brand Name: Wuhan Siwer Optics
Place of Origin: Wuhan,China
MOQ: 10 pieces
Price: 50-300USD/piece
Payment Terms: T/T, Western Union
Supply Ability: 5000 pieces/month
Delivery Time: 4-6 weeks
Packaging Details: 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler
Material: Optical glass,BK7,SF,etc.
Size tolerance: +/-0.1mm
Chamfer: 0.2-0.5mm
Surface quality: 40/20
Surface flatness: Lambda/4 in 25.4mm
Centration: 1-3 arc min
Standard coating: AR@400-700nm or customized
Size range: 4-300mm
Usage: Optical system
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N-BK7 Or H-K9L Material Optical Double Convex Lens 400-700nm AR Coating

Double convex lens

A double convex lens is symmetrical across both its horizontal and vertical axis. Each of the lens' two faces can be thought of as originally being part of a sphere. The fact that a double convex lens is thicker across its middle is an indicator that it will converge rays of light that travel parallel to its principal axis. A double convex lens is a converging lens. A double concave lens is also symmetrical across both its horizontal and vertical axis. The two faces of a double concave lens can be thought of as originally being part of a sphere. The fact that a double concave lens is thinner across its middle is an indicator that it will diverge rays of light that travel parallel to its principal axis. A double concave lens is a diverging lens.


Double-Convex Lenses are used in image relay applications, or for imaging objects at close conjugates. Double-Convex Lenses have positive focal lengths, along with two convex surfaces with equal radii. Aberrations will increase as the conjugate ratios increase. DCX Lenses are used in a range of industries or applications.


Optical AR Coatings

a) Uncoated,The surface reflectivity of uncoated visible lenses(Refractive index=1.5) is about 4%.

Click on the link to see how to calculate reflectivity

b) AR/AR@400-700nm,Tavg>99.4%

c) AR/AR@450-650nm,Tavg>99.6%

d) AR/AR@400-1000nm,Tavg>98.5%

e) We can also customize high damage threshold antireflective coatings




Production Line



Optical Properties of Optical lens

MaterialOptical glass
AR Coating Range400-700nm or customized
Reflectance over
AR Coating Range @ 0° AOI

Ravg<0.5%

Diameter Tolerance+0.0/-0.1 mm
Thickness Tolerance±0.1 mm
Focal Length Tolerance±2%
Surface Quality40/20 Scratch-Dig
Surface Flatness
(Plano Side)
λ/2 at 633nm
Spherical Surface Powerc
(Convex Side)
1.5λ at 633nm
Surface Irregularity
(Peak to Valley)
λ/2 at 633nm
Centration<3 arcmin
Clear Aperture>Ø10.16 mm (Ø1/2" Lenses)
>Ø20.32 mm (Ø1" Lenses)
Design Wavelength546nm

What's the way of shipping?
We accept DHL, Fedex, TNT, UPS, SF, EMS etc. If you have your own express account, it's great.


How to pay?

(1) T/T, PayPal, West Union,etc

(2) Bank Fee: West Union-USD30.00(≤USD3000.00),

T/T-USD20.00+, PayPal-5%. Please consult the local bank.


What's the deliver time?
For inventory: the delivery time is around 5 workdays.

Customized products: the delivery time is 10 to 30 workdays. According to the quantity and precision.

Can I customize the products based on my need?
Yes, we can customize the material, specifications and optical coating for your optical components based on your needs. OEM is available.

Quality N-BK7 Or H-K9L Material Optical Double Convex Lens 400-700nm AR Coating for sale
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