| After-sales Service: | Return or Replacement |
|---|---|
| Warranty: | 2 Years |
| Usage: | Lighting, Medical, Optical, Photography |
| Type: | Concave Lens |
| Transmittance: | >95% |
| Shape: | Single-lens |
| Samples: |
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| Customization: |
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| Items | Parameters |
| Material | optical glass, H-K9L (N-BK7) |
| Outer circle: | 3mm-500mm ± 0.1mm |
| The radius of curvature: | ± 1mm - ± 50000mm ± 1% |
| Center thickness tolerance: | ± 0.05mm (we can process to ± 0.01mm with high precision) |
| Center deviation: | 3′(we can process to 30 ″with high precision) |
| Surface accuracy: | λ/ 8 (high precision, we can process to 1 / 10λ) |
| Surface quality: | 60/40 (we can process to 10-5 with high precision) |
| Effective caliber: | ≥90% |
| Coating: | Multilayer Antireflective Coating A:400-700nm B:650-1050nm C:1000-1650nm |
Q1:Can you send me free samples or Can I have a sample order?
A: Yes, We accept sample orders, and we're also willing to send you a free sample to test and check its quality. if we don't have the item in stock, then you could place a sample order.
Q2: How many days can I get my package after placing an order?
A: If the order needs to be customized also the quantity is big. it will take around 10-30 working days to produce and then ship.
Q3: Are OEM services available?
A: Sure, please send us your design paper on the platform to confirm more details information.
Q4:We have a commercial project, Can you help me offer an optical design solution?
A: Yes, we have professional experts who are engaged in optical design for many years, please send us more detail of your project, we will supply our most suitable solutions for you.
Q5: What shipping methods do you have?
A: For small quanities or sample could by express such as: Fedex, UPS, DHL, EMS, etc. Large scale quantity in your demands:by sea/train ,or by air.In your requests.
Suppliers with verified business licenses
Audited Supplier 
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