非球面透镜

ASPHERES FOR SUPERIOR IMAGE QUALITY

Aspherical lenses have a complex surface profile. SCHOTT uses both CNC machining (Computerized Numerical Control) and MRF tooling (Magneto Rheological Finishing) techniques to manufacture these lenses in small and medium-sized quantities or for use in prototypes.

Due to their unique surface structure, aspherical lenses eliminate monochromatic aberrations (e.g. spherical aberrations) and therefore deliver superior overall image quality. They are being used to replace multi-spherical element assemblies more and more frequently because this reduces the total weight and enables a more compact design.

SCHOTT offers aspheres in various sizes and different materials and relies on two main polishing processes:

These two basic polishing processes serve different products and markets:

Main advantages:

• SCHOTT masters the entire value chain and leverages its reliable product portfolio to produce customized aspheres
• Custom designed products of the highest quality
• Flexible production – from a single piece to serial production
• Customized polishing possible

Advantages of using aspheres:

• Improvement of imaging quality
• Reduction of construction size and depth
• Reduced weight
• Enhanced total light transmission
• Easier assembly

Materials Used

• All types of optical glass
• Fused silica
• Other materials on request

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