Plano optics: Versatility and quality.

We manufacture plano and plane parallel optics of highest precision according to our client’s requirements – incorporating, on request, certain filtering properties, optical or metallic coatings – there are no limits to versatility.

By deploying the latest machines and thanks to years of experience and competence of our technical staff we ensure dimensional tolerances and surface quality for the most severe areas of use.

Windows and Optical Flats

Windows and Optical Flats (specifications)

Applications	Windows and mirrors as well as laser windows and mirrors, filters in all optical densities, beamsplitters, etalons, retardation plates or other special functions in your systems
Material	Optical glasses (by SCHOTT, OHARA …), fused silica, sapphire, crystalline quartz, filter glasses, glass ceramics, ceramics, silicate glasses, special materials (e.g. ZnS, etc.)
Dimensions	Round: Ø 0.5 to 1.700 mm Rectangular: edge lengths of 0.5 to 3.200 mm Thicknesses: 0.02 to 120 mm with tolerance up to ± 1 µm
Shapes	Round, rectangular, elliptical, stepped or as required
Flatness	Up to λ/40 PV depending on dimensions, material and coating
Parallelism	Up to 1" depending on dimensions
Roughness	Up to 0.2 nm rms
Surface defects	Up to 5/Nx0.004 as per DIN ISO 10110
Laser damage threshold	20J/cm² (with special polishing technology and coating)
Coatings	dielectric and metallic, 190 to 12.000 nm; refer to Optical coatings
Metrology	See Test/Measurement

Optical filters

Coloured glass filters (specifications)

Applications	Long-pass, short-pass, band-pass and neutral-density filters in measuring, controlling and regulating systems as well as in environmental protection and medical applications Interference filters by combination of colour glass substrates and thin film coatings
Material	Colour filter glass by SCHOTT, HOYA …
Dimensions and shapes	Refer to specifications of our windows Maximum dimensions depending on availability of glasses from material manufacturers
Flatness, parallelism and surface defects	Refer to specifications of our windows
Determination of precision thickness	By our multispectral transmission measuring technique and available algorithms for precise calculation of the necessary material thickness
Thermal tempering	In the case of absorbing filter glass, a protective hardening is often required to protect against thermal stress at changing temperature
Coating	Dielectric, 190 to 12.000 nm; refer to Optical coatings
Metrology	See Test/Measuremen

Coated filters (specifications)

Filter types	Short-pass filters Long-pass filters Band-pass filters Notch filters Dichroic and illumination filter Heat protection filters Neutral density filters Special filters according to client’s requirement
Substrate material	Plano plates made of optical glasses, fused silica, silicate glass, special materials on request
Dimensions and shapes	Refer to specifications of our windows
Flatness, parallelism and surface defects	Refer to specifications of our windows
Coating	Dielectric, 190 to 12.000 nm; refer to Optical coatings
Metrology	See Test/Measurement

Mirrors

Mirrors (specifications)

Designs	Front or rear surface mirror with metallic or dielectric coatings
Substrate material	Optical plane glasses, technical flat glasses
Coating	AAl, Ag, Au and Cr with or without dielectric protection layer High reflective coatings for laser applications with minimum surface defects For details refer to Optical coatings
Dimensions	1 to 1.700 mm Larger dimensions on request
Shapes	Round, angular, elliptical or as required
Wavelength range	190 to 12.000 nm
Abrasion resistance & adherence	DIN ISO 9211-4
Thermal endurance	Up to 550°C depending on the coating and substrate material
For maximum performance	Hard and abrasion resistant, gas and waterless, long-term stability, insensitive against environmental conditions
Metrology	See Test/Measurement

Prisms/Wedged windows

Prisms (specifications)

Designs	KWedged Windows (round, angular, elliptical) 90° prisms, 60° prisms Roof prisms Rhomboid prisms Dove prisms Penta prisms Conical prisms Special prisms and optical bonding groups on request
Material	Optical glasses (by SCHOTT, OHARA …), fused silica, filter glasses, glass ceramics, special materials
Dimensions	1 to 200 mm
Flatness	Up to λ/40 PV depending on dimensions, material and coating
Angular accuracy	Up to ±1" depending on dimensions
Pyramidal errors	Up to 2“
Deflection accuracy	Up to ±1"
Roughness	0,2 nm rms
Surface defects	5/Nx0.004 as per DIN ISO 10110
Laser damage threshold	20J/cm² (with special polishing technology and coating)
Coating	Dielectric and metallic, 190 to 12.000 nm; refer to Optical coatings
Metrology	See Test/Measuremen

Light pipes/Periscopes/Homogenizing rods

Light pipes/Periscopes/Homogenizing rods (specifications)

Shapes	Round, angular (square, hexagonal, octagonal), tapered
Material	Optical glasses (by SCHOTT, OHARA …), fused silica, filter glasses, silicate glasses, special materials
Dimensions	1 to 200 mm
Flatness	Up to λ/20 PV depending on dimensions, material and coating
Parallelism	Entry to exit surface up to 1" depending on dimensions
Angular accuracy	Up to ±1" depending on dimensions
Deflection accuracy	Up to ±1"
Roughness	Up to 0.2 nm rms
Surface defects	Up to 5/Nx0.004 as per DIN ISO 10110
Laser damage threshold	20J/cm² (with special polishing technology and coating)
Coating	Dielectric and metallic, 190 to 12.000 nm; refer to Optical coatings
Metrology	See Test/Measurement

Plate & Cube beamsplitters

Plate beamsplitters (specifications)

Application	In optical measurement and projection engineering for dividing or combining paths of rays as semitransparent mirrors also with lip angle for avoiding multiple reflections
Designs	Polarized, non-polarized, selective in reflective and transmission range, rear faces mostly broadband anti-reflective Standard coatings: R/T = 30/70%, 50/50%, 70/30% for wavelength ranges of 425 to 675 nm and 675 to 1000 nm Designs with carrier material Borofloat 33 in 1.1 mm thickness; see Products on stock
Substrate material	Optical glasses (by SCHOTT, OHARA …), fused silica, Borofloat glass, special materials
Dimensions	Blanks as per client’s choice: round, rectangular, elliptical to 400 x 400 mm made of flat glasses; or substrates according to our optical plane plates or wedge plates See windows and prisms
Planarity, parallelism	According to specification of flat glass plates or, if optically polished plane plates are used; see windows
Surface defects	Up to 5/Nx0.04 as per DIN ISO 10110
Coating	Dielectric and metallic; refer to Optical coatings
Metrology	See Test/Measurement

Cube beamsplitters (specifications)

Application	For separation or combination of light: transmitted beam without wavefront distortion and deflection; reflected and transmitted part of beam pass identical optional path lengths.
Designs	Polarizing, non-polarizing, metallic (slightly polarizing) and dielectric coating Selectable reflection and transmission range Absorption < 5% Deflection tolerance < 10' All outer surfaces broadband anti-reflective coatings
Material	Optical glasses (by SCHOTT, OHARA …), fused silica, special materials
Dimensions	2 to 80 mm edge length
Flatness, parallelism	Depending on usage of substrate prisms; refer to prisms
Surface defects	Up to 5/Nx0.16 as per DIN ISO 10110
Coating	Dielectric and metallic; refer to Optical coatings
Metrology	See Test/Measuremen