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Advantages and Disadvantages of Colored Absorptive Glass and Type Selection
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- Advantages and Disadvantages of Colored Absorptive Glass
- Colored absorbing glass achieves selective absorption of the spectrum and displays specific colors by adding certain metal ions during the glass forming process. According to the type of spectrum, it can be divided into cutoff-type colored absorbing glass, bandpass-type colored absorbing glass, and neutral density absorbing glass; according to its use, it can be divided into heat-insulating glass, color temperature increasing (or decreasing) glass, wavelength calibration glass, etc. Cutoff-type colored absorbing glass is defined by the cutoff wavelength as yellow (JB series), orange (CB series), red (HB series), black (HWB series), and ultraviolet (ZWB series), etc. Bandpass-type colored absorbing glass is defined by wavelength position as cyan-blue (QB series), green (GB series), etc.
- Compared with optical thin-film filters, colored absorbing glass has the following advantages: 1. Colored absorbing glass is cheaper than optical filter. 2. Colored absorbing glass is insensitive to the angle of incidence; its spectral characteristics do not change with the angle of incidence.
- The shortcomings are: 1. The spectral changes in colored absorbing glass are slow, and its performance is not as good as that of filters. 2. Some colored absorbing glass has a spontaneous fluorescence effect, which is not suitable for detecting weak fluorescence spectra signals.
- Types of color absorbing glass
- Longwave passband type color absorption glass JB, CB, HB, HWB series
- Bandpass color absorbing glass QB, DB, GRB series.
- Spectrally Absorbing Color Glass ZAB Series.
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