Double-Convex (DCX) Lenses
Double Convex Lenses are used in image relay applications, or for imaging objects at close conjugates. Double Convex Lenses have positive focal lengths, along with two convex surfaces with equal radii. Aberrations will increase as the conjugate ratios increase. DCX Lenses are used in a range of industries or applications.
Description
One or both of the lens faces is part of a sphere and can be concave or convex. A lens is called a convex lens if it is thicker at the center than at the edges. Double convex lenses have focal points on both sides of the lens; these and the points at twice the focal length are used to locate objects and images.
The fact that a double convex lens is thicker across its middle is an indicator that it will converge rays of light that travel parallel to its principal axis. A double convex lens is a converging lens. A double concave lens is also symmetrical across both its horizontal and vertical axis.
What kinds of materials can Elyonoptic use to make Double Convex（DCX） 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 / -0.05 mm |
| 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 double-convex (DCX) 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.
