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Double-Concave Lenses
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Double concave lens consists of two concave spherical surfaces with a negative focal length, which is used to make the beam diverge, and is often used in beam expansion, collimation, projection, and focal length expansion of optical systems applications. They are usually used in conjunction with other lenses to improve imaging performance by reducing chromatic and other aberrations.
Parameters
Specification
Material
Optical Glasses, Fused Silica, Sapphire, Infrared Material, etc.
Diameter Range
0.5 ~ 600mm
Diameter Tolerance +0.00/-0.02mm Surface Irregularity λ/10@632.8nm Surface Quality 10-5 Focal Length Tolerance ±0.5% Centration 30 arc sec. Clear Aperture > 90% of diameter Bevel 0.2mm × 45° Coating As customer's request The Application of Double Concave Lenses
Double concave lenses can be used in photography systems, projection systems, imaging systems, optical viewfinder, laser measurement systems, and are widely used in fields such as telescopes, camera lenses, microscopes, light receivers, and condenser lenses.
JT Processing Capability
JT customizes double concave lenses without coating or with antireflective coating according to customer needs, which can meet customers' different applications in different wavebands. AR coating includes UV、VIS、NIR and SWIR. JT provides double concave lenses with multiple material substrates, K9 optical glass substrates are suitable for visible and near-infrared applications, germanium, silicon, zinc selenide and calcium fluoride substrates are suitable for infrared applications, and fused silica is suitable for ultraviolet applications.
After 19 years of operation, our team has become an expert in producing high-quality customized lenses for customers. We can also provide design assistance, lens component optimization, manufacturability assistance, and design performance testing.
Contact us now to learn more about our products and customized solutions.
Double-Concave Lenses
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