Optical coatings for the most stringent requirements.

MICROS Optics develops and produces optical and optoelectronic functional coatings on all types of glasses, glass ceramics and crystals. Years of experience of our experts in the area of different coating variants and the use of latest design software enables us to find the most optimal solution for your application with dielectric and metallic coatings in the spectral range of UV (190 nm) to IR (>12 µm).

We offer you a comprehensive ion-assisted coating technology including the suitable measurement and testing technologies for optical components of almost any geometry.

Antireflection coatings (AR-coatings)

Antireflection coatings Examples of coatings curves

Antireflection coatings (AR-coatings)

Application	Nearly all optical applications in industry and measurement technology require substrates with anti-reflective coatings. In this, the transmission of substrates is increased by reduced reflection. The coatings can be optimized for one or several wavelengths.
Types of coating	Single-layers coatings (MgF2) V-coating for individual wavelengths Double-V and triple-V coatings for several wavelengths Broadband multilayer AR-coating Laser coatings Special coatings as per client’s requirements
Our competences	Hard, scratch-resistant coatings; less absorption; low layer tension; high laser damage thresholds; coating of bonded assemblies possible by using low coating temperatures
Spectral range	Standard 190 to 2000 nm; other wavelengths on request
Substrate material	Optical glasses, flat glasses, colour glasses, fused silica, sapphire, glass ceramics, ceramics, silicate glasses, semi-conductor materials, special materials on request
Dimensions	Client-specific optical components (plano plates, prisms, lenses…) and bonded groups Anti-reflective flat glasses on request with blanks as per client’s requirements
Metrology	See Test/Measuremen

High-reflection coatings

Examples of coating curves

High-reflection coatings (specifications)

Application	Reflection or deflection of light rays; the reflection of substrates is increased up to 99.99% through metallic and/or dielectric coatings
Types of coatings	Metallic high-reflection coatings Aluminium with protective layer (AL protected) Aluminium with dielectric enhancement layer (AL enhanced) Silver with protective layer (AG protected) Gold (AU bare) Gold with protective layer (AU protected) Dielectric high-reflection coatings Laser-Line high-reflective coatings HR laser mirrors for one or several wavelengths HR laser mirrors with several additional functions Broadband mirrors with high reflection (e.g. cold light mirror) Dichroic mirrors Semi-transparent mirrorsR-Laserschicht Special reflection coatings as per client’s requirements.
Our competences	Hard, scratch-resistant layers; high laser damage thresholds; coating of bonded assemblies possible by using low coating temperatures
Spectral range	metallic mirrors 190 to 12.000 nm; dielectric mirrors 240 to 2.000 nm
Angle of incidence	0°-60° s-polarization and p-polarization
Substrate material	Optical glasses, flat glasses, Borosilicate glasses, filter glasses, fused silica, glass ceramics, ceramics, special materials on request
Dimensions	Client-specific optical components and bonded groups Front surface mirrors with Al coating on flat glasses on request; blanks client’s requirements
Metrology	See Test/Measurement

Filter coatings

Examples of coating curves

Filter coatings (specifications)

Application	For elimination of disturbing extraneous light in optical measurement systems; e.g. in the use of laser or LEDs
Coating types	Short-pass filter Long-pass filter Variable bandpass filter Narrowband filter Dichroic colour and illumination filter Heat reflection filter Neutral density filter Special filters as per client’s requirements
Our competences	Hard, scratch-resistant, thermally and mechanically stable coatings; high laser damage thresholds; for extreme environmental conditions; outer space compatible; saltwater resistant
Spectral range	Standard 240 to 2.000 nm; other wavelengths on request
Substrate material	Optical glasses, flat glasses, Borosilicate glasses, filter glasses, fused silica, special materials on request
Dimensions	Client-specific optical components; coated flat glasses on request; blanks as per client’s requirements
Metrology	See Test/Measurement

Beamsplitter coatings

Examples of coatings curves

Beamsplitter coatings (specifications)

Application	For separation of light rays, without changing the spectral range; for example, corresponding signals or images are generated at different locations through beam splitters
Coating types	Dichroic and metallic beamsplitters Polarizing and non-polarizing beamsplitters Bonded and non-bonded beamsplitters Beamsplitters for single wavelength or broadband Special beamsplitters as per client’s requirements
Our competences	Hard, scratch-resistant, thermally and mechanically stable coatings; high laser damage thresholds; for extreme environmental conditions; outer space compatible; saltwater resistant
Spectral range	240 to 2.000 nm; other wavelengths on request
Substrate material	Optical glasses, flat glasses, Borosilicate glasses, fuses silica, special materials on request
Dimensions	Beamsplitter plates or beamsplitter cubes as per client‘s specification; beamsplitter plates with split ratios of R/T = 30/70, 50/50, 70/30 in VIS und NIR; see Products on stock
Metrology	See Test/Measurement

Transparent and electricoconductive coatings (ITO) (specifications)

Application	For heating of surfaces (e.g. for fog susceptible optical systems); adjustable thermal resistance (Ω/q) to avoid static charges transparent electrodes
Coating types	ITO (Indium Tin Oxide) in defined layer thickness
Our competences	In visual range highly transparent Hard, scratch-resistant, thermally and mechanically resistant Can also be supplied with additional anti-reflective properties
Substrate material	Optical glasses, flat glasses, Borosilicate glasses, filter glasses, fused silica, special materials on request
Dimensions	Client-specific optical components; coated flat glasses on request; blanks client’s requirements
Metrology	See Test/Measurement

Gold solderable coatings (specifications)

Application	For soldering micro-optics and small optics; replaces the conventional bonding or adhesive technology
Coating type	Gold + adhesive agent
Our competences	Special development for laser-specific joints
Substrate material	Optical glasses, flat glasses, filter glasses, Borosilicate glasses, fused silica, special materials on request
Dimensions	Client-specific optical components
Metrology	See Test/Measurement

Chromium coatings / Microstructures in chromium coatings

Chrom-Schichten (Spezifikationen)

Application	For microstructures and other applications
Coating types	High-reflective coating HRC (normal chromium coatings) Low-reflective coating LRC (black chromium coatings) Combination of layers (chrome/chrome oxide) Narrow and broadband coatings Special layers as per client’s requirements
Our competences	Different coating thicknesses, customized coating combinations and optical densities as per client’s requirements
Substrate material	Optical glasses, flat glasses, Borosilicate glasses, filter glasses, fused silica, special materials on request
Dimensions	Client-specific optical components; coated flat glasses on request; blanks client’s requirements
Metrology	See Test/Measurement

Mikrostrukturen in Chrom-Schichten (Spezifikationen)

Application	Microstructures in chromium coatings for measurement technology, image processing, medical applications, laser technology and other applications
Designs	Micro-lithographic structures in metallic layers (Cr/Cr2O3) on glass and other carrier materials Through photo-lithographic multiple methods structured components can be produced very economically in high volumes.
Our competences	Sophisticated, finest structures and precision divisions; including total solutions: optical components, coatings and micro-lithographic structures
Substrate material	Optical glasses, flat glasses, Borosilicate glasses, filter glasses, fused silica, special materials on request
Dimensions	Client-specific optical components; cut according to client’s requirements
Metrology	See Test/Measurement