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Dielectric mirrors
Dielectric mirrors are well-suited for directing, modifying and imaging light beams
Compared to metal mirrors, dielectric mirrors, also known as interference mirrors, typically encompass narrower spectral bandwidths, and their reflectance is contingent upon the angle of incidence. However, they can achieve exceptional reflectance surpassing 99.9% in the visible range at a perpendicular angle of incidence, albeit within a limited spectral range. Broadband mirrors with slightly lower reflectance can also be fabricated.
Dielectric mirrors excel in directing, modifying, and imaging light beams. By tailoring dielectric layers with specific designs adapted to the application's requirements, surface reflection can be maximised, and radiation can be precisely controlled. Dielectric mirror coatings are engineered to optimise performance within specific wavelengths, enhancing defined spectral ranges. These coatings comprise multiple layers featuring alternating high and low refractive indices, known as alternating layer systems.
More kinds of dielectric mirrors:
Advantages of dielectric mirrors
- Very good reflectivity in the visible wavelength range
- High transmission in the NIR range
- Low light absorption
- High operating temperature
- Optimized for an angle of incidence of 45°
Further mirror coatings
Other mirror coatings that may be interesting for your application:
FAQ - Häufig gestellte Fragen zu dielektrischen Spiegeln
Dielectric mirrors, also known as interference mirrors, consist of several layers with alternating high and low refractive indices and are optimized for specific wavelengths.
They are less broad spectrally and their reflection is angle-dependent, but they achieve extremely high reflection values at a perpendicular angle of incidence.
In the visible range, they can achieve over 99.9% reflection at a perpendicular angle of incidence.
Yes, there are broadband variants, but with slightly lower reflection.
They are ideal for directing, modifying, and imaging light beams.
Very good reflectivity in the visible range, high transmission in the NIR range, low light absorption, and high operating temperature.
Most dielectric mirrors are optimized for an angle of incidence of 45°.
They are used for highly reflective mirrors, laser mirrors, scanner mirrors, sensor technology, and dental mirrors.
Yes, they can separate the visual from the infrared light spectrum, e.g., in cold light mirrors.
Yes, e.g., front surface mirrors or t3://page?uid=115highly reflective mirror coatings.
