What is the lead time for delivery?

The delivery time is typically 7-10 days.

What is the minimum order quantity?

The minimum order quantity is 1 PC.

Optical Bi-Concave Lens

Name: N-Bk7 Bi-Concave Lenses/N-Bk7 Double Concave Lens/Optical Bi-Concave Lens
Brand: Shanghai Rui Tai Photoelectric Technology Co., Ltd.
SKU: 1914048005

Shanghai, ChinaShanghai Rui Tai Photoelectric Technology Co., Ltd.

US$50.00

100-499 Pieces

US$45.00

500-999 Pieces

US$40.00

1,000+ Pieces

Sample price:US$50.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

3r Policy-Return, Replace, Refund

Warranty

12months

Model NO.

RAY-OL032#

Usage

Lighting, Medical, Optical, Photography, Laser, Astronomy, Imaging, Detection, etc

Type

Bi-Concave Lenses

Transmittance

Central 90% of Diameter

Shape

Single-lens

Material

Optical Glass

Lenses Color

Clear

Certification

RoHS, ISO9001, CE

Customized

Coating

Ar.14, Ar.16, Ar.18, Ar.33 Coated

Substrate

N-Bk7 Optical Glass or Equivalent N-Bk7

Surface Quality

40-20 Scratch-Dig or Custom Manufacturing

Surface Flatness

Lambda/4 or Custom Manufacturing

Effective Focal Length(Efl)

From -12.5mm to -500mm

Surface Accuracy, Irregularity

Lambda/4 or Custom Manufacturing

Transport Package

Cartons or Wood Case

Specification

6.35mm-50.8mm or custom manufacturing

Trademark

Raytek

Origin

China

HS Code

9002909090

Production Capacity

100000PCS Per Year

Key features

Customized Substrate Options: N-BK7 from major brands or equivalent Chinese manufacturing available.

Customized Surface Quality: 40-20 Scratch-Dig or custom manufacturing to meet specific needs.

Customized Surface Flatness: Lambda/4 or custom manufacturing options for precision requirements.

Customized Effective Focal Length: Range from -12.5mm to -500mm with custom manufacturing capabilities.

Customized Surface Accuracy: Lambda/4 or custom manufacturing for irregularity and power.

Customized Sizes and Shapes: Design and custom manufacturing available as per customer demand.

High Performance Substrates: 40-20 scratch-dig quality with high homogeneity and low inclusions.

Comprehensive 3R Warranty: Return, Replace, Refund policy for any inferior-quality products.

Company profile

High Repeat Buyers ChoiceImporters and ExportersR&D CapabilitiesManagement Certification

Shanghai Rui Tai Photoelectric Technology Co., Ltd.

Shanghai, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 9 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤4.18h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier is identified as a trading company with a stated 10,000-square-meter production base and multiple processing machines. It holds an ISO9001:2015 certificate, reports established complaint-handling and corrective-action procedures, and offers broad customization services. Export experience is stated as nine years, with exports representing 51%–70% of sales and markets including South America and Europe. Production quantities and peak-season fulfillment information are provided, but the supplier reports no new products in the past year, no ODM or SDK capability, no overseas agents, warehouses, showrooms, or inventory service. Financial information is incomplete and inconsistent across the supplied records, so financial credibility cannot be confirmed. No specific customer cases or named brand OEM experience are provided.

CertificationsThe supplier reports holding an ISO9001:2015 certificate. This is explicit evidence of a quality-management certification, but no additional certification details or validation information are provided.

After-Sales capabilityThe supplier has clear procedures and followed records for corrective and preventive actions and customer complaint handling. However, the quality-assurance status is unknown, so the evidence supports a positive service-process assessment but not a complete after-sales capability evaluation.

R&D capabilityThe supplier reports no new products during the past year, no ODM service, and no available SDK. These are explicit limitations in recent product innovation and development-related services.

Production capacityThe supplier describes a 10,000-square-meter production base with water-jet, CNC, milling, and other processing equipment, reports 6–10 quality-control staff, and lists production quantities for several product categories. It also states peak-season order fulfillment within 15 working days, providing explicit evidence of production resources and operational capacity.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization. These services are reported consistently across the two records, indicating broad customization coverage.