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

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

Metrology

Optical filters

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

Metrology

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

Metrology

Mirrors

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

Prisms/Wedged windows

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

Metrology

Light pipes/Periscopes/Homogenizing rods

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

Metrology

Plate & Cube beamsplitters

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

Metrology

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

Metrology