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Dielectric Mirrors

High-reflection front surface mirror optics
SHR Series

Special Properties

  • High and broadband reflection
  • Designed for 45° incidence angle
  • Excellent infrared transmittance
  • Large operating temperature range
  • Low absorption
  • Temperature-resistant glass substrates
  • 100% metal-free dielectric layers
  • Low loss design

Typical Applications

  • Highly efficient mirrors in optical systems
  • Nearly loss-free redirection of light & laser beams
  • Dichroic divider mirrors (VIS/NIR+IR beam splitters)
  • Beam separation or combining optics for lasers
    with different wavelengths
  • Laser beam injector mirrors
  • Infrared filters
  • Broadband laser optics
  • Mirror optics with IR- and NIR-filter function
  • Mirrors for the use in strong magnetic fields
  • Heat/light separating applications

Related mirror types

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Dielectric mirrors for maximum performance

Dielectric mirrors are known for their ultra-high optical reflectivity, which metal-coated mirrors cannot achieve at this level. The construction of dielectric mirror coatings bases on the alternated deposition of thin layers of non-metallic materials with a different refractivity, one upon the other. Because the reflection of dielectric mirrors is angle-dependent and since they have a physically limited optical bandwidth, their coating systems usually are optimized for ultra-high mirror efficiency for a single wavelength or a specific but limited wavelength area. At the same time, dielectric mirrors are usually either designed for only a single or a small range of incidence angles. Hence, dielectric mirror optics mostly do not provide such an extremely broadband reflectivity as metal-coated mirrors do. Instead, they feature a much higher efficiency within the optimized wavelength range. The optical mirrors of our SHR series have a 100% dielectric multi-layer thin-film coating that is broadband enough to reflect the entire visible spectrum at the most common incidence angle of 45°. They are used to reflect images, light sources, and also laser beams with high efficiency. This broadband dielectric mirror design is of significant advantage for the majority of optical applications. The SHR coatings nearly show no absorption and reflect almost all incident light.

Additionally, we took care that the layers of our SHR mirrors allow high transmission for infrared wavelengths up to 2,5 µm. Hence, the optics can also be used as effective IR-filters or as dichroic beam splitters because they can separate the VIS from the IR range very efficiently. This feature, in combination with the low absorption of the dielectric coating system, also allows using our SHR mirrors as combining mirrors for light or multiple lasers with different wavelengths in the VIS and IR-spectrum. That is possible even at increased laser beam power because the minimal optical absorption of the mirror coating within the operating bandwidth is negligible. For information about what lasers, what laser beam power, and what laser lines can be reflected with our dielectric mirrors, please ask our engineers and let them know the details of your application like wavelength, laser beam diameter, laser power, damage threshold, and other application relevant specifications. Moreover, also an optimized design for polarized light, for which our standard SHR-mirrors are unspecified, is possible upon sufficient production quantities.

Another worth mentioning feature of our SHR mirrors is the excellent thermal strength of their dielectric coatings. By using a thermally resistant high-quality borosilicate glass substrate for the SHR, an operating temperature of up to approx. 360 °C is possible. However, the heating process must be uniform, and possible temperature gradients over the mirror surfaces must not exceed the permissible physical limits.


Customized dielectric mirrors

At larger quantities, a customized design also for our SHR-mirror coatings is possible. No matter whether you need laser-optimized dielectric mirrors, a model that filters out the infrared even more efficiently, increased optical flatness, or ultra-high efficiency for a particular laser wavelength, all these options are generally possible. Also, a polarization optimization and definition of the damage threshold of the dielectric coatings are feasible at batch quantities. These properties are often critical for laser redirecting mirrors. They are not specified parameters for the standard SHR mirror series. Please ask our engineers for support or additional specifications, or send us your detailed coating inquiry if any of these options are of interest to you.


Get a quote for our individually-sized dielectric SHR mirrors by clicking on the button below or choose a thickness from the table.


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48h-Express Service Also available in 48 h Express-Service


Reflection spectrum of our SHR mirrors

SHR dielectric mirrors, reflection curve
Enlarge curve to show details

Standard Thicknesses

(Please click on a glass thickness to get a quote)

Thickness (mm)


48h-Express Service
1,10 ±0,10
1,75 ±0,20
3,30 ±0,20
Customized thicknesses on request.
The thicknesses marked with "" are also available within 48–h Express Service.

Optical reflection for unpolarized light at 45°

  • Ravg > 99% at wavelength 425-680 nm at 45°
  • Ravg > 97% at wavelength 400-690 nm at 45°
  • Other wavelength ranges and incident angles per inquiry
  • Mirror designs for polarized laser redirecting applications are feasible on demand



Surface Quality

  • typ. better than 80-50 scratch & dig (MIL-0-13830A)
  • Better quality possible if required.

Mirror Coating

  • All-dielectric
  • Metal-free
  • Low absorption
  • Broadband thin-film layer system

Other Properties

  • Adherence to MIL-C-675 C (tape test)
  • Abrasion-resistant to MIL-M-13508 C
  • Damage threshold not specified for the standard design. More details available on demand.


  • SHR dielectric highly reflective broadband mirror

Why don't we have a shopping cart?

We manufacture each mirror according to individual dimension requirements to perfectly fit into the customer's application. We can fabricate optics to size based on our standard optical coatings very quickly. Often we are even faster than re-sellers can ship their catalog mirror optics with fixed dimensions, which makes a shopping cart superfluous. Just click on one of the RFQ-buttons or select a thickness shown in the table and enter the desired dimensions. You typically receive your quote within just a few minutes (provided we are in the same time-zone).

All given details and specifications are mean reference values and are not guaranteed. Also, please consider our "Notes on specifications".

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