Plano-concave lenses feature one flat and one concave surface, designed to diverge collimated light or increase beam diameter.
They are ideal for beam expanders, laser systems, optical measurement, and scientific research.
Custom materials, dimensions, and coatings are available to meet specific application 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：-10mm to -1000mm(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.
Diverge light or expand beam diameter
Wide material selection: glass, fused silica, infrared materials
Precision customization available
Lasers
Metrology
Research instruments
