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Hyperion - Bandpass Filter
Band pass filter can separate a band of monochromatic light, the ideal transmittance of band-pass filter through the bandwidth is 100%, while the actual band-pass filter pass band is not the ideal square. The actual band-pass filter generally has a center wavelength λ0, a transmittance T0, a half width of the pass band (FWHM, a distance between two positions where the transmittance in the pass band is half the peak transmittance), the cutoff range and other key parameters to describe.
Band-pass filter is divided into narrow-band filter and broadband filter.
In general, a very narrow bandwidth or high cut-off steepness will make the product more difficult to process; meanwhile the pass band transmittance and cut-off depth is also a contradictory indicator
Hyperion Optics’ band-pass filters are composed of a stack of equally spaced dielectric layers. The number of layers and thicknesses are calculated with excellent cut-off depth (typically up to OD5 or higher), better steepness and a high transmittance (70% narrowband, 90% broadband).
- Fluorescence microscopy
- Raman fluorescence detection
- Blood component testing
- Food or fruit sugar detection
- Water quality analysis
- Laser interferometer
- Robot welding
- Astronomical telescope observation celestial nebula
- Laser ranging and so on