Protected Aluminum Mirrors
AL+SiO2 front surface mirror for ultraviolet light
SEA-UV Series
Special Properties
- Mirror optics for ultraviolet wavelengths
- High reflectivity from about 250 nm to 10 µm
- Excellent optical characteristics
- Metallic aluminum thin-film coating
- Selected HQ substrate material
- Aluminum coating protected by a thin quartz layer
(Al+SiO2)
Typical Applications
- Ultraviolet mirrors
- Mirrors for ultraviolet laser applications
- UV-VIS-IR mirrors
- Mirrors for medical devices
- Mirror optics for UV-curing systems
- Alternative for silver or gold mirrors
- UV-sensor technology
- Broadband laser optics
- UV mirrors for disinfection systems
Related mirror types
- SEA-VIS-Series
(enhanced aluminum mirrors, VIS) - SEA-NIR-Series
(enhanced aluminum mirrors, NIR-IR) - SHP Series
(silver front surface mirrors with high reflection)
Request for Quotation
48-hour express manufacturing
Our SEA-UV-protected aluminum front surface mirrors provide high reflection in the ultraviolet wavelength range. They are based on an Al+SiO2 coating that only consists of aluminum, which is protected by a thin quartz layer.
Unprotected bare-aluminum metal coatings quickly oxidize when exposed to oxygen. Furthermore, such optics are very sensitive to scratching. The quartz coating on top of the aluminum prevents this oxidization and makes the mirrors more scratch-resistant and durable. Therefore, compared to soft and sensitive bare-aluminum metal mirrors, our protected aluminum mirrors' surface is more rigid and resistant to scratching.
Still, protected aluminum mirror coatings are more delicate and susceptible to scratching than our SEA-VIS enhanced aluminum mirrors, which can have a significantly thicker protection coating system because they don't need to reflect in the UV range. So, in general, you should not use protected aluminum mirrors in harsh environments or when exposed to mechanical abrasion.
Because of the metallic layer, the reflection of our SEA-UV mirror coatings is far less angle-dependent than that of dielectric coatings. Moreover, the optics feature a high and broadband reflectivity for the ultraviolet-to-infrared wavelength range. Only close to around 700–870 nm, there is a moderate reflection drop down to slightly below 80%. Above this wavelength spectrum, the reflectivity of the mirror stays continuously high, up to 10 µm. The SEA-UV-protected aluminum mirrors can also work as laser mirror optics for multiple wavelengths at limited laser power simultaneously. In some applications, the SEA-UV mirrors can replace gold or silver mirrors.
We can modify and increase the reflectivity of the coatings for a specific wavelength or a particular reflection range by adding thin dielectric layers. Please consider using our custom coating request form to conveniently request a quotation for mirror optics based on your specific requirements. Please contact us if you need additional information or technical support.
To quickly receive a quote for our SEA-UV-protected aluminum front surface mirrors with the size you need, please click the button below or select a thickness from the table in the specifications:
Specifications
SEA-UV Reflectance
Enlarge the reflectance curve to show details
Standard Thicknesses
Please click on a thickness to request a quote.Thickness (mm) |
Tolerance |
|
|---|---|---|
| 1.00 | ±0.10 | ✔ |
| 2.00 | ±0.20 | ✔ |
| SEA-UV with custom thickness. | ||
| The thicknesses marked with "✔" are also available within our 48–hour express option. | ||
Optical Reflection (45° incidence angle)
- Ravg > 85% at 280–700 nm
- Rabs >/= 90% at 300–400 nm
Coating construction
- Metallic mirror coating
- Aluminum, protected by a SiO2 (Quartz) coating
Substrate Material
- Selected Float
- Other substrates are available on request
Flatness
- Depending on the substrate material and thickness
- Other on request
Surface Quality
- Typ. 80-50 scratch & dig (MIL-0-13830A)
- Other on request
MIL-Standards
- Adherence according to MIL-C-675 C (tape test)
- Abrasion-resistant according to MIL-M-13508 C
If you need mirror optics solely for the visible wavelength range, please look at our SEA-VIS-enhanced aluminum front surface mirror, which is optimized for higher VIS reflection thanks to dielectric overcoatings. Moreover, please take a look at our SHP-silver metal mirrors. For the near-infrared wavelength spectrum, we created our SEA-NIR mirrors.
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Last update: September 24, 2024.