Double-convex lenses have two convex surfaces, offering excellent focusing performance.
They are widely used for imaging, beam convergence, laser systems, and optical experiments.
LUMINA can provide custom sizes, materials, and coatings to meet diverse application and spectral requirements.
Material: H-K9L, N-BK7, fused silica, CaF₂, ZnSe, etc.
Diameter：0.5mm—300mm
Diameter tolerance：±0.1mm to±0.02mm
Focal length range：+5mm to +1500mm(Typical)
Focal length tolerance：±1% to±0.5%
Centration：< 3 arc min to <10 arc sec
Clear aperture：>85% to >95%
Surface quality：MIL 60-40 to MIL 10-5
Surface accuracy:up toλ/10, Ra < 5 nm
Coating options: AR coatings or custom coatings upon request
Specifications may vary depending on lens geometry, diameter, focal length, and material.
Efficient light focusing
Large-size production available
Variety of coating options
Imaging
Lasers
Optical experiments
