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Filters  

Filters are used to selectively allow light of certain wavelength to pass through, whether for normal or oblique angle of incidence.  All the coating materials used in these filters produce hard, durable dielectric films which show no signs of degradation with age and use.  Typical filters that we produce are dichroic filters, edge filters, IR cut filters and narrow-band filters. Applications examples   - Laser instruments   - Lightings   - Optical sensors   - Imaging and display products

 

   

                     

Green filter This coating can meet the following specifications: T < 1% at 390nm to 485nm T = 50% at 518 ± 7nm T > 80% at 550nm to 565nm T = 50% at 578 ± 7nm T < 1% at 610nm to 760nm		Blue filter This coating can meet the following specifications: T > 80% at 400nm to 470nm T = 50% at 485 ± 5nm T < 1% at 510nm to 760nm