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Coated IR Flat Silicon Windows 3*-5um Bbar
US$1.00-35.00
20 Pieces
Sample price:US$20.00/piece.Request sample
Product profile
Customization
AvailableUsage
Thermal ImageType
Flat LensModel NO.
SDSE4Transmittance
>95%Shape
WindowMaterial
GermaniumCertification
RoHS, CECustomized
CustomizedCoating
HCSurface Quality
60-40Flatness
1/4 LambdaTolerance
+/-0.05mmTransport Package
100PCS Per BoxSpecification
25.4mmTrademark
Sunday OpticsOrigin
China, ChangchunHS Code
9001909090Production Capacity
5000PCS Per MonthKey features
High Transmittance: Transmittance exceeds 95% for efficient infrared signal transmission.
Customized Options: Supports custom surface quality, flatness, tolerance, and coating designs.
Wide Diameter Range: Available in diameters from 3mm to 280mm with precise tolerances.
RoHS and CE Certified: Meets international safety and environmental standards for global use.
Low Wedge Angle: Wedge angle less than 1 arcmin for high optical precision.
HC Coating: Features Hard Coating to enhance durability and optical performance.
Low MOQ: Minimum order quantity is just 1 piece, suitable for prototyping.
Fast Sample Delivery: Sample delivery time is 10-20 days for quick project turnaround.
Company profile

Business Type: Manufacturer/FactoryExport Year: 2013-05-09Nearest Port: beijing, shanghai, shenzhenAverage Response Time: ≤8.27hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, CIF, DDP, CIP
AI-Powered supplier vetting
SummaryChangchun Sunday Optics Co., Ltd. is identified as a Chinese manufacturer/factory specializing in optical components, including lenses, prisms, windows, filters, coatings, and optical assemblies. The supplier reports ISO 9001 certification, more than 10 production lines, 41–50 quality-control staff, 6–10 years of combined R&D engineer experience, and annual processing capacity of up to 1 million pieces. It also states that it supports both sample orders and mass production and provides after-sales service. The supplier has exported since 2013 and holds self-operated import and export rights. However, the supplied information does not provide sufficient evidence to assess financial credibility, product-specific customization capability, or the quality and scale of customer cases.
Supplier typeThe supplier is explicitly classified as a Manufacturer/Factory and describes its own optical-component production activities, including lenses, prisms, filters, coatings, and assemblies. This supports direct manufacturing capability rather than only trading or distribution.
CertificationsThe supplier reports holding ISO 9001 certification, indicating that a quality-management-system certification is claimed. No certification number, issuing body, scope, or validity period is provided.
After-Sales capabilityThe supplier explicitly states that it provides after-sales service for product questions to achieve customer satisfaction. The information does not specify response times, service channels, warranty terms, or service coverage.
Production capacityThe supplier reports more than 10 production lines, 41–50 quality-control staff, multiple branches, and annual processing capacity of up to 1 million pieces, with support for sample orders and mass production. Its stated equipment covers cutting, grinding, polishing, coating, and gluing, providing explicit evidence of substantial optical-component production capability.
Product Q&A
Q:Are you a manufacturer?
A:
Yes, we are a manufacturer and you can visit our factory.
Q:Do you provide test reports?
A:
Yes, we offer full size test reports covering size, focal length, flatness, coating curve, and coating plate.
Q:What is the production quantity per month?
A:
It depends on the lens size and precision required.
Q:What is the minimum order quantity?
A:
The minimum order quantity is 1 piece.
Q:What is the delivery time?
A:
Samples take 10-20 days. Peak season lead time is one month, and off-season is within 15 workdays.
Send Inquiry
*To:
Changchun Sunday Optics Co., Ltd.
Changchun Sunday Optics Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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