Bi-concave spherical lenses have two concave surfaces. Bi-concave lenses are used for a wide range of beam expansion or negative imaging applications.

Material Suppliers for Our Production Lenses:

Chengdu Guangming (CDGM), SCHOTT, OHARA, HOYA, Corning, and other material manufacturers with ROHS certification.

Lens Size Range Options:

Diameter (Dia): 0.5mm to 500mm

Radius: 0.5mm to ∞ (flat at infinity)

Eccentricity / Centration: Measurable up to 3 arc-seconds using our eccentricity meter.

Surface quality(S/D): We can provide the highest grade better than 10/5, or we can evaluate based on your actual application requirements.

Surface Flatness: We offer products with surface flatness better than λ/20. Our interferometer standard lens surface shape exceeds λ/20 specifications.

Transmitted Wavefront (RMS): We provide actual measurements for this parameter. The appropriate shape of the product ensures favorable processing performance. Evaluation of results will be based on the material and shape.

Other Dimensional Parameters: For side droop, concentricity, and other dimensional parameters, please contact us for an evaluation tailored to your specific product.

Note:

  The technical parameters that can be processed need to be evaluated based on drawings or specific requirements. The achievable accuracy level in actual production is influenced by material properties, shape requirements, processing technology, equipment, technicians, and testing equipment. We understand the field of optical lens processing. If you have any questions, please contact us.