Contact Us

Bandpass Filter

  • Introduction

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


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).


Applications:

1. Fluorescence microscopy

2. Raman fluorescence detection

3. Blood component testing

4. Food or fruit sugar detection

5. Water quality analysis

6. Laser interferometer

7. Robot welding

8. Astronomical telescope observation celestial nebula

9. Laser ranging and so on

 Band-pass filter wavelength

 Band-pass filter wavelength


Related Content
  • BBO Crystal

    BBO Crystal

    March 14, 2017The BBO Crystal is an efficient NLO crystal for the second, third and fourth harmonic generation of Nd: YAG lasers, and the best NLO crystal for the fifth harmonic generation at 213 nm. Conversion effi...view
  • Chalcogenide Lenses

    Chalcogenide Lenses

    February 17, 2017Chalcogenide glass is containing one or more chalcogens (sulfur, selenium and tellurium, but excluding oxygen). Chalcogenide components are becoming popular in various IR applications due to its excel...view
  • Parabolic Mirror

    Parabolic Mirror

    February 17, 2017Hyperion Optics offer custom parabolic mirrors for use from the UV(200 to 400nm) to the IR (1to 40µm) wavebands. Parabolic mirrors are typically designed as a segment of a larger...view