Optical Glass Bk7 K9 Sapphire Quartz Biconvex Lens 21mm Diameter 29.2mm Focal Length for Magnifying Glass

• Warranty: 3years
• Usage: Optical
• Type: Convex Lens
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: JLU-12
• Transmittance: 90%-95%
• Shape: Spherical
• Material: Optical Glass
• Lenses Color: Clear
• Certification: ISO9001
• Customized: Customized
• Coating: Ar Coated
• Center Thickness: 6mm
• Focal Length: 29.2mm
• Color: Clear Transparent
• Tolerance: +/-0.05mm
• Clear Aperture: 98%
• Edge Thickness: 2.09mm
• Customized Support: OEM
• Structure: Double Convex
• Application: Magnifying Glass
• Diameter: 21mm
• Transport Package: Vacuum Packaging
• Specification: 21mm
• Trademark: JLGD
• Origin: Henan, China
• HS Code: 9001909090
• Production Capacity: 100000 Piece/Pieces Per Month
• Package Size: 18.00cm * 12.00cm * 10.00cm
• Package Gross Weight: 0.300kg
• Lead Time: 7 days (1 - 10 Pieces) ; 25 days (11 - 500 Pieces) ; To be negotiated ( > 500 Pieces)

Product Description

Optical Glass BK7 K9 Sapphire Quartz Biconvex lens 21mm Diameter 29.2mm Focal Length For Magnifying glass

Product Description

Biconvex Lens:
Biconvex lens are the simple lenses which comprises of two convex surfaces in spherical form, generally having the same kind of radius of curvature. These are also called as convex-convex lens.

Being a kind of simple lens, the biconvex lens has wide range of applications of it, but it is not limited to, control and focusing of laser beams, quality imaging and also the other kinds of optical instruments.

In a biconvex lens or a Plano-convex lens, a collimated or accurately parallel beam of light passes through the lens and converges at a spot or focus coming behind the lens. In such case, this lens is known as a converging or positive lens. The distance coming from the lens up to the spot is called as the focal length of lens. Since there is a curvature on both the sides of lens, there will be around two focal points and also two centers. The line that is drawn through middle of the biconvex lens is known as the principal axis.

Specification:

Production Name	Biconvex lens 21mm diameter 29.2mm focal length for Magnifying glass
Material	H-K9L Glass
Diameter	21mm
Focal Length	29.2mm
Center Thickness	6mm
EdgeThickness	2.09mm
Tolerance	±0.05mm
Surface Quality	60/40
Surface Flatness	1/4 lambda
Clear Aperture	98%
Bevel	0.25 mm x 45°
Coated	Upon customer request
Application	Magnifying glass

Detailed Images

We can customized all kinds of optical lens and prisms according to the drawing and your request.

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FAQ

Q:Could you customize our logo on the product ?
A:Yes, we can customize your logo as your demand.

Q:What's your MOQ?
A:Generally, our MOQ is 1000pcs. But we accept lower quantity for your trial order. Please free to contact us.

 

Q:Hong long does it need to make production ?

A:As usual, our production time is 7-20days.

Q:What's your payment ?
A: 50% as deposit, and 100% before delivery. We'll show you the photos of the products and packages before you pay the balance.

Q:What's your delivery way?
A: EXW, FOB, CFR

Q:How to proceed an order ?
A: Firstly, let us know your requirements or application. Secondly, we quote according to your requirements or our suggestions.Thirdly, customer confirms the samples and places deposit for formal order.

Q:What package do you provide ?
A:Generally, we pack our goods in special protective packing for optical products for inner packing, anti-shock material with bubble wrap for the carton.

Packing & Delivery

Packaging Details:

Inner Packing:
Special protective packing for optical products.

Outer Packing:
Carton, Shock absorption material and bubble wrap.

Delivery Time:
7-20 days

Delivery:
Generally, we use the FedEx, DHL, UPS, TNT, SF, etc. Please note it before delivery. Transit time depends on the express anddestination. By the way, we would re-check all the details before delivery.

Company Profile

NANYAG JINGLIANG PHOTOELECTRIC CO.,LTD :

Our Company was established in 1985 with a registered capital of 1 million yuan. We are a high-tech enterprise specializing in the processing, production and sales of optical glass products, prisms and lenses. The headquarters and R&D base are located in central China. The largest optical equipment manufacturing site, Huanggang Industrial Park, Nanyang, Henan. Our company has strong technical and R&D capabilities, with professional technicians, operators and sales teams.

 

 

 

 

 

Certifications