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Opto-Mechanics PROVIDED BY SKP

Carbon Fiber Breadboard

Optical Breadboards made from Carbon Fiber Reinforced Polymer (CFRP) provide a similar thermal stability to Super Invar but at a lower cost and are inherently non-magnetic. Since time immemorial, steel breadboards have been the only game in town. However, structures made CFRP have been used in the aerospace and space industries for many years due to their low weight, high strength, excellent thermal stability and low resonant frequencies.
The boards are available with flat working surfaces or alternatively with protruding head inserts, which allow a high degree of flatness by grinding of insert faces. To cover various requirements, our boards are offered in four different versions:

● EC-Version (Economy Series)

Cost effective series of breadboards based on honeycomb or sandwich panels with thick CFRP cover plate. Stiffness and thermal stability can be adjusted by varying CFRP plate thickness on top/bottom side of the board.
Technical specifications
Dimmension Typical breadboard sizes are available, maximum size 2000 x 2500 mm
Thickness Typical thickness ranges from 25, 50, 75 to 100 mm or according to structural requirements or customer needs
Flatness Flatness of entire mounting surface EC- Version ≤ 0.05 mm , ECI- Version ≤ 0.2 mm
Mounting Grid Typical mounting grid: 25×25 mm, 50×50 mm or customized
Mounting Holes Metric and imperial threads, inserts are made from stainless steel, Aluminium, Titanium or INVAR
Damping Nominal damping
Thermal Expansion Lateral directions CTEx,y = 2.5 · 10 E-6 [mm/mm·K] @ 273 K for plane plate
Stiffness Nominal stiffness
Weight Area weight approximately 14 kg/m² (50 mm grid)
Design – Honeycomb structure with skins made from multi-layered Carbon fiber fabrics cured with Epoxy
   Resin
– Skins are designed typically to meet quasi-isotropic behaviour or according to structural/
   thermal requirements
– High rigidity Aluminium or closed cell foam
Top Side Single inserts according to mounting grid, with first inserts 25 mm from edges or customized and sealed mounting holes
Bottom Side Single inserts with through holes at corners, 25 mm from edges or customized
Sidewalls Carbon fiber plates with edge protection profiles
Ventilation For vacuum applications core materials are ventilated

● AD-Version (Advanced Series)

Technical specifications
Dimension Typical breadboard sizes, maximum size 2000 x 2500 mm
Thickness Typical thickness ranges from 25, 50, 75 to 100mm or according to structual requirements or custom needs
Flatness Flatness of entire mounting surface SA- Version ≤ 0.05 mm , SAI- Version ≤ 0.2 mm
Mounting Grid Typical mounting grid: 25×25, 50×50 mm or customized
Mounting Holes Metric or imperial threads, inserts made from stainless steel, Aluminium, Titanium or INVAR
Damping Norminal damping
Thermal Expansion Lateral directions CTEx,y = 2.5 · 10 E-6 [mm/mm·K] @ 273 K for plane plate
Vertical directions CTEx,y = -0.1 ÷ 0.5 10 E-6 [mm/mm·K] @ 273 K for CFRP tube in axial direction
Stiffness Nominal stiffness
Weight Area weight approximately 19 kg/m² (50mm grid)
Design – Plates are designed typically to meet quasi-isotropic behaviour or according to
   structural/thermal requirements
– Plate structure with space tubes and/or ribs
– Tubes are designed typically for high axial stiffness
Top Side Single inserts according mounting grid, with first inserts 25 mm from edges
Bottom Side Single inserts with through hole at corners, 25 mm from edges or customized
Sidewalls Edge protection profile, side walls on demand
Vacuum Suitable
Cleanroom Suitable

● CA-Version (Full Carbon Series)

Boards of the CA-series are entirely made from Carbon Fiber Reinforced Polymer (CFRP). The top and bottom plates consist of CFRP shells structurally joined by tubes and/or ribs made from CFRP. In addition to the advantages of the AD-series, boards of the CA-series allow the integration of optical / electronic components inside the stiff carbon shell and easy routing of wires and optical fibers. Breadboards can be ordered customized and with removable side-walls.
Technical specifications
Dimension Typical breadboard sizes, maximum size 2000 x 2500 mm
Thickness Typical thickness ranges from 25, 50, 75 to 100 mm or according to structural requirements or customer needs
Flatness Flatness of entire mounting surface CA- Version ≤ 0.05 mm , CAI- Version ≤ 0.2 mm
Mounting Grid Typical mounting grid: 25×25, 50×50 mm or customized
Mounting Holes Metric and imperial threads, inserts made from stainless steel, Aluminium, Titanium or INVAR
Damping Nominal damping
Thermal Expansion Lateral directions CTEx,y = 2.5 · 10 E-6 [mm/mm·K] @ 273 K for plane plate
Vertical direction CTEz = -0.1 ÷ 0.5 E-6 [mm/mm·K] @ 273K for CFRP tube in axial direction
Stiffness Nominal stiffness
Weight Area weight approximately 19 kg/m² (50 mm grid)
Design – Plate structure with spacer tubes and/or ribs.
– Plates are designed typically to meet quasi-isotropic behaviour or according to
   structural/thermal requirements
– Tubes are designed typically for high axial stiffness
Top Side Single inserts according mounting grid, with first inserts 25 mm from edges
Bottom Side Single inserts with through hole at corners, 25 mm from edges or customized
Sidewalls Edge protection profiles, side walls on demand
Vacuum Suitable
Cleanroom Suitable

● SL-Version (Slim Line Series)

Slim Line Breadboards of SL-series offer high stiffness at minimum thickness. The breadboards are entirely made from Carbon Fiber Reinforced Polymer (CFRP) and constist of a top and bottom plate. The plates are optionally structurally decoupled by a damping foil which is laminated in-between. Typically breadboards of SL-series are used as additional platforms mounted on top of a larger breadboard or an optical table.
Technical specifications
Dimension Typical breadboard sizes, maximum size 2000 x 2500 mm
Thickness Typical thickness ranges from 5 to 25 mm
Flatness Flatness of entire mounting surface SL- Version ≤ 0.05 mm , SLI- Version ≤ 0.2 mm
Mounting Grid Typical mounting grid: 25×25, 50×50 mm or customized
Mounting Holes Metric or imperial threads, inserts made from stainless steel, Aluminium, Titanium or INVAR
Damping Optimized damping
Thermal Expansion Lateral directions CTEx,y = 2.5 · 10 E-6 [mm/mm·K] @ 273 K for plane plate
Stiffness Nominal stiffness
Weight Area weight approximately 22 kg/m² (25mm grid)
Design – Plates are designed typically to meet quasi-isotropic behaviour or according to
   structural/thermal requirements
– Plate structure with optional damping foil in-between
Top Side Single inserts according mounting grid, with first inserts 25 mm from edges
Bottom Side Single inserts with through hole at corners, 25 mm from edges or customized
Sidewalls None
Vacuum Suitable
Cleanroom Suitable

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