What payment methods are accepted?

We accept T/T, L/C, Western Union, Cash, Credit Card, Paypal, Alipay, MoneyGram, and Assurance payment.

How do you guarantee product quality?

We ensure quality through strict detection during production, advanced metrology solutions (ZYGO, Mitutoyo, etc.), and strict inspection before shipment with intact packaging.

What after-sales services are provided?

We provide 24-hour after-sale service and long-time maintenance, along with repair, replacement, and refund options under warranty.

Dia50.8mm N-BK7 Coated Optical Spherical Negative Double Concave Lens Biconcave Lens

Name: Dia50.8mm N-BK7 Coated Optical Spherical Negative Double Concave Lens Biconcave Lens
Brand: Band Optics Technology
SKU: 2247857805

Jiangsu, ChinaBand Optics Technology

US$59.00

1-99 Pieces

US$39.00

100+ Pieces

Sample price:US$10.00/piece.Request sample

Product profile

After-sales Service

Repair, Replace, Refund

Warranty

3-Year

Usage

Lighting, Medical, Optical, Photography, Astronomical

Model NO.

Biconcave L11

Type

Concave Lens

Transmittance

>95%

Shape

Double Lens

Material

Optical Glass

Lenses Color

Clear

Certification

RoHS, ISO9001

Customized

Coating

HMC

Dimension

Customized, From 10mm to 500mm

Thickness

Customized, From 0.2 to 100mm

Dimension Tolerance

up to 0.02mm

Thickness Tolerance

up to 0.02mm

Wedge

up to 20arcsec

Flatness

1/2L@633nm

Surface Quality

20-10 Scratch-Dig (up to 10-5 Available)

Focal Length Tolerance

±1 %

Surface Roughness

Rq<0.5nm

Coatings

Ar, Bbar, Customized According to Requi

Clear Aperture

>90% Centered

Chamfer

<0.1mm

Aoi

0-55deg

Bevel

Break Sharp Edges

OEM

Available

Transport Package

Carton, Blister, Customized

Specification

Customized

Trademark

Band-Optics

Origin

China

HS Code

9001909090

Production Capacity

100000piece/Month

Key features

Custom Dimensions: Diameter 10-500mm, Thickness 0.2-100mm with high precision tolerances.

High Transmittance: Transmittance >95% with various coating options like HMC and AR.

Diverging Function: Bi-concave design effectively diverges light rays for beam expansion.

Premium Materials: Made from N-BK7, UV fused silica, CaF2, ZnSe, and other optical glasses.

OEM Service: Full customization of material, specs, and coatings for OEM requirements.

Wide Applications: Ideal for laser systems, microscopy, photography, and astronomical use.

Quality Assurance: RoHS and ISO9001 certified with strict inspection before shipment.

3-Year Warranty: Comprehensive 3-year warranty covering repair, replacement, and refund.

Company profile

Band Optics TechnologyJiangsu, China

Business Type: Manufacturer/Factory, Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2021-12-27Nearest Port: NanjingAverage Response Time: ≤2.04hTerms of Payment: T/T

AI-Powered supplier vetting

SummaryBand Optics Technology is a limited trading company based in Jiangsu, China, established in 2021. It specializes in optical components, serving diverse industries such as defense and aerospace. The company holds ISO9001:2015 certification, ensuring quality control but lacks SDK availability for R&D. Though it offers robust after-sales service and conducts fire drills, its innovation is limited with only one R&D engineer. Financial data suggests consistent capacity over three years, but there's limited information on customer cases and trade volume.

Supplier typeBand Optics Technology is a trading company with a limited ownership structure based in Jiangsu, China.

CertificationsThe supplier holds an ISO9001:2015 certification, indicating adherence to quality management standards.

After-Sales capabilityThe company offers end-to-end 24-hour trustworthy pre-sales and after-sales service and solutions.

Financial creditThe supplier has maintained financial capacity over the last three years, demonstrating stable cash flow and profit indices.

R&D capabilityLimited innovation capability with only one R&D engineer and no SDK availability.

Production capacityThe supplier has advanced manufacturing processes and focuses on optical components like lenses and domes.

Customization capabilityThe company can customize according to customer needs through its R&D engineer.

Product Q&A

Q:What are the main products offered?

Optical Components including Aspherical Lenses, Spherical Lenses, Cylindrical Lenses, Lens Assemblies, Optical Windows, Mirrors, Prisms, Filters, and Special Shaped Optics.

Q:What is the minimum order quantity (MOQ)?

Normally one piece. Discounts are available for larger quantities, and items can be shipped together with other parts.

Q:What is the delivery time for orders?

For stock items, delivery is within one week after payment. For customized products, the delivery time is negotiated based on specific requirements.

Q:Can I get a sample to check the quality?

Yes, samples are provided for testing. There is a discount available for Trade Assurance Sample Orders.

Q:Do you offer OEM services?

Yes, we customize the material, specifications, and optical coatings for your optical components according to your requirements.