Narrowband / Bandpass Filter
An interference filter is formed by repeatedly coating a glass substrate with layers of different dielectric materials. Refractive-index differences create interference, transmitting selected wavelengths while reflecting or absorbing others. The passband is controlled to a specified range. High in-band transmission, deep stopband blocking and low ripple suit complex environments. These filters are highly angle-sensitive and should receive normal or near-normal incidence. During installation, the highly reflective face should face the source to reduce heat absorption in glass and adhesive.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material | H-K9, H-BAK7 and Other Optical Glasses |
| Center Wavelength | According to Customer Requirements |
| Half Bandwidth | Within ≧10 nm±2 nm Range |
| Peak Transmittance | ＞40% to 90% |
| Blocking Depth | <0.1% or Customized to Customer Requirements |
| Dimensional Tolerance | Customized to Customer Requirements |
| Clear Aperture Dimension | >90% |
Datasheet
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Supplier Information
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