Bandpass Filters
Bandpass filter plate are divided into short-pass and long-pass filters according to whether they transmit below or above the transition wavelength. The transition wavelength or cut-on/off wavelength is the wavelength at which the transmission is 50% of its peak value.
Specifications:
Material |
N-BK7 ;Fused silica |
Dimension Tolerance |
+0.0, -0.1mm |
Thickness Tolerance |
±0.1mm |
Surface quality |
60/40 |
Clear Aperture |
>85% |
Flatness |
λ /4 per 25mm@633nm |
Parallelism |
±3' |
Bevel |
<0.25mm×45° |
Coating |
One surface(S1) :HR & HT The other surface(S2):Upon requirement |
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