Features

• A filter with a spectral width at half maximum (1 nm to 40 nm) that transmits only specified wavelengths.
• It is ***d to extract only a specific spectrum from an emission line lamp or to extract only a specific wavelength from a multi-wavelength oscillating laser.
• The multilayer coating of the dielectric film and metal film provides a sharp rise and a reliable shielding of the cutoff wavelength region.
• Since the interference filter is fixed to the metal frame, it is easy to fix to the holder and handle the element.
• Filters can be selected from a number of wavelengths ranging from 214 nm ultraviolet to 1550 nm infrared.
• □ Large size 50 interference filter (VPF-50 S) and high transmission interference filter (YIF) are available.
• * The characteristics of the interference filter dep*** on the incident angle. When the angle is tilted to the optical axis, the center wavelength moves to the short wavelength side, and the transmittance also decreases.
• * Enter a parallel beam or a light close to the parallel beam at 0° to the optical axis.
• * The narrower the half-width, the greater the angular dep***ency.
• * The tolerance of the center wavelength is set to the long wavelength side beca*** the angular dep***ence of the interference filter is taken into consideration.
• * The specifications of each filter are based on the temperature of 23°C.
• * As the temperature rises, the wavelength shifts to the longer wavelength.
• * Each filter has been precisely adjusted to achieve high performance.
• * For this reason, the filter thickness varies one by one.
• * Interference filters absorb light and cannot be ***d with high-power lasers or high-energy pulsed lasers.