Customization: | Available |
---|---|
After-sales Service: | Return or Replacement |
Warranty: | 2 Years |
Still deciding? Get samples of US$ 2/Piece
Order Sample
|
Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
---|
Payment Methods: |
|
---|---|
Support payments in USD |
Secure payments: | Every payment you make on Made-in-China.com is protected by the platform. |
---|
Refund policy: | Claim a refund if your order doesn't ship, is missing, or arrives with product issues. |
---|
Suppliers with verified business licenses
Audited by an independent third-party inspection agency
Double-Concave lens, also named Bi-concave lens, is usually made of flint glass and used for beam divergence. It's focal length is negative but the parallel incident ray diverges outward. The two sides of the biconcave lens curvature radius can be equal or not. Combined with plano-convex lens, it is generally used in beam expanders, projection optical systems and optical viewers etc.
Manufacturing accuracy of lenses or according to customer's need
Material | Optical Glass |
Surface Flatness | < λ/5 @ 633nm |
Scratch/Dig | < 40/20 (both sides) |
Eccentricity | ≤ 1arcmin |
Focal Length Tolerance | < ± 1% |
Diameter Tolerance | < + 0.00/ - 0.02mm |
Thickness Tolerance | < ± 0.05 |
Clear Aperture | ≥ 95% of diameter |
Coating | AR OR BBAR |
Diameter Range | 5~260mm |
Oplens (brand own by SiChuan JUKA Optical Technology) is located in the city of Chengdu, China, which enjoys the reputation of the world optical processing center. Oplens has been committed to providing customers with high-precision optical system solutions over 16 years, covering the complete manufacturing process from the design, processing and assembly of various optical components and mechanics. It occupies 10,000 square meters of modernized facilities with hundreds of equipments and instruments. More importantly, Oplens owns an excellent team of more than 200 experienced engineers and workers, who provide the best products and service to their both domestic and overseas customers.
You are most welcome to experience our outstanding products and services to make your business more stably and successfully.
Q1:Can you send me free samples or Can i have an sample order ?