UV Fused Silica Meniscus Lenses
Meniscus lenses have two curved surfaces,convex on one side and concave on the other side. It is thicker at the center than at the edges. When a meniscus lens is combined with another lens, the focal length is shortened and the numerical aperture of the system is increased.
Description
Meniscus lenses are divided into positive meniscus lenses and negative meniscus lenses.
The Positive Meniscus Lenses are a convex-concave lens, but it is thicker at the center than at the edges. They are felt polished and are used universally in the ophthalmic industry where convention dictates that lens power be specified in Diopters.
The Negative Meniscus Lenses are a convex-concave lens, but it is thinner at the center than at the edges. Otherwise description is similar to Plano Concave lenses.
What kinds of materials can Elyonoptic use to make Meniscus Lenses?
CDGM optical glasses, SCHOTT, OHARA, Fused Silica, Sapphire, Germanium, Silicon, calcium fluoride (CaF2), Zinc Selenide (ZnSe), and other infrared materials.
What services can Elyonoptic provide?
- Small batch products are numbered,and each product of provider the ZYGO surface data,Diameter data,Center thickenss data,Total height data,center bias data
- Large-scale products provide five-thousandths of product data
- Provide the proof of product material
- Coating products provide coating curve
How long is Elyonoptic delivery date?
10-300pcs:15-25days
1000-5000pcs:35days
5000-10000pcs:45days
(Specific delivery date suggestions and sales verification)
We deliver bulk products in batches
Specifications:
| Specification | Value |
|---|---|
| Materials | Optical glasses, Fused Silica, Sapphire, Germanium, Silicon, calcium fluoride (CaF2), Zinc Selenide (ZnSe), and other materials |
| Diameter Tolerance | +0.0/-0.05mm |
| Focal Tolerance | ±2% |
| Surface Quality | 40-20, 20-10, 10-5 |
| Centration | 1 arc min |
| Surface Flatness | N=3 △N=0.5 or better |
| Clear Aperture | 90%, 95%, 100% |
| Bevel | Protective |
| Coating | Optional |
FAQs
1. What is your MOQ for UV fused silica meniscus lenses?
Our standard MOQ is 50 pieces for regular production.
For small orders (≤50 pcs), we can still accept production and provide full inspection reports and measurement data for each piece upon request.
2. Do you support small batch or prototype orders?
Yes. We support small batch and prototype production for testing and evaluation before mass production.
3. What is your production lead time?
- Standard polished fused silica windows: 4–5 weeks
- Coated optical windows (AR / HR): 5–6 weeks, depending on coating type and specifications
4. Do you provide inspection reports?
Yes. We provide quality inspection reports based on order quantity:
- ≤50 pcs: Full inspection data for each piece available
- 100–1,000 pcs: 5%–10% random sampling inspection reports
- >1,000 pcs: 0.5% sampling inspection reports
All inspection data includes dimensional and surface quality parameters.
5. What coating options are available?
We offer:
- Anti-Reflection (AR) coatings
- High-Reflection (HR) coatings
- Broadband coatings
- Custom wavelength coatings (UV / Visible / IR)
6. Can you manufacture custom sizes and shapes?
Yes. We support OEM manufacturing according to drawings.
Available shapes include:
- Round
- Square
- Rectangular
- Stepped
- Wedged
- Drilled / special structures
7. What quality certifications do you have?
We are certified under international quality management systems, including:
- ISO 9001 Quality Management System
- IATF 16949 Automotive Quality System
- Good Standardization Practices Certification
We also apply strict internal quality control processes, including dimensional inspection, surface quality testing, and coating performance verification before shipment.
