Cold Mirrors

Dichroic heat transmitting 45°-mirrors

SHD Series

Special Properties

Large reflectivity for visible wavelengths
Broadband infrared transmittance up to 2500 nm
Designed for an angle of incidence of 45°
Increased operating temperature range
Good optical characteristics
Very efficient heat / light separation
Temperature resistant borosilicate glass substrate
Dielectric multi-layer coating system

Typical Applications

45°-heat transmitting mirrors
Infrared transmitting optics in lighting systems
High reflection mirrors
Plane lighting filters with optical function
Mirrors for sensor technology
Cold light sources
Dichroic beamsplitters
Medical lighting
Cost-effective 45° laser front surface mirrors
Mirrors for diode laser
VIS-blocking optics

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Also available in 48 h Express-Service

The cold mirrors of our SHD series provide a very high reflection for visible light sources and laser systems. Since the mirrors have a good optical transmission for infrared wavelengths up to 2500 nm, they are excellently suited as filters for the extraction of cool light and at the same time for the removal of thermal radiation from a beam path, while maintaining a high optical imaging quality. The dichroic coating of the mirrors is designed for a reflection angle of 45° and it transmits the infrared radiation at 0° related to the incident light beam.

SHD cold mirrors offer a very good surface quality and are suitable for various optical applications. In addition to the main application as a cold mirror, the SHD optics can also couple visible lasers into infrared laser beams. Besides that, in many cases it is possible to use our standard SHD mirrors as efficient and cost-effective laser mirrors for visible wavelengths and unpolarized laser systems.

The dielectric coating construction of the mirror optics ensures permanent resistance to thermal load and moisture. For the glass substrate of the SHD mirrors we use a premium quality borosilicate glass which enables the optics to be used at high operating temperatures and that offers a good optical quality.

Our company also has the capabilities to produce cold mirrors according to customer's specifications. On a batch basis, the layer systems of the mirror optics can be modified in relation to the reflection range, angle of incidence, the cut-on and cut-off wavelengths, damage threshold, as well as to the spectral operating range. In case you need help with custom coated mirrors, please use our coating enquiry form or send an e-mail to request a custom optics quotation.

To request a price quote for our standard SHD cold mirrors with individual dimensions please click on the following button:

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If you are interested in more lighting filters, please visit the websites of our SIR heat reflecting hot mirrors and of our KG-heat absorbing filters.

Specifications

View reflection spectrum of the SHD mirrors

Construction

Metal-free 100% dielectric coatings

Substrate

Temperature resistant borosilicate glass
Other substrates possible on demand

Optical Reflectivity

R > 99% for single wavelengths
Ravg > 97% at 400 - 690 nm at i = 45°
Tavg > 85% at 800 - 2500 nm
Other wavelength range, different angles of incidence, customized cut-off and cut-on point per inquiry

Flatness

Depending on substrate material and thickness

Surface Quality

typ. 80-50 scratch & dig (MIL-0-13830A)
Other on request

Standard Thicknesses

1,10 mm, 1,75 mm, 3,30 mm
(Click thickness to get a price quote)

Adherence and Abrasion Resistance

Adherence according to MIL-C-675 C (tape test)
Abrasion resistant according to MIL-M-13508 C

Note: If you are looking for optics with the inverse function principle of SHD mirrors, please visit the data sheet of our SIR-Hot Mirrors for detailed information.

All given details and specifications are mean reference values and are not guaranteed. In addition please consider the "Notes on specifications"

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