The Thorlabs PBG11105 UltraLight Honeycomb Aluminum Breadboard is a 24″ × 24″ × 0.98″ optical bench platform engineered for precision mounting and minimal thermal drift. This discontinued model delivers a rigid, lightweight foundation for optical and mechanical assemblies through athermalized aluminum construction—a 6 mm top plate and 3 mm bottom plate sandwiching high-density plated aluminum honeycomb core. The all-aluminum design ensures matched coefficient of thermal expansion throughout, eliminating thermal instabilities that degrade system performance.
Technical Specifications
• Model: PBG11105
• Dimensions: 24″ × 24″ × 0.98″ (609.6 mm × 609.6 mm × 25 mm)
• Top Skin Flatness: ±0.15 mm (±0.006″) over any 0.3 m²
• Mounting Holes: 1/4″-20 tapped (M6 metric equivalent) on 1″ centers (25 mm metric), 1.0″ edge spacing (25 mm metric), maximum screw depth 6 mm (0.24″)
• Surface Finish: Matte black paint
• Weight: Up to 20% lighter than equivalent solid aluminum surface plates
• Rigidity: Exceeds 0.5″ solid aluminum breadboards
• Material: Non-magnetic aluminum
• T-Slot: 25 mm rail-compatible sides
– Key Features
• Double-plate, single-honeycomb core architecture maximizes strength-to-weight ratio
• Athermalized design minimizes thermal errors across operating environments
• ±0.15 mm flatness maintains optical alignment stability
• Matte black finish suppresses reflectivity and backscatter
• Precision 1″ center hole spacing enables flexible component positioning
– Typical Applications
• Optical table for laser systems and spectroscopy
• Vibration-isolated platform for precision measurement
• Modular breadboard for reconfigurable optical benches
– Compatibility & Integration
T-slot integration supports 25 mm rail accessories. Metric and imperial hole spacing accommodate standard optical mounts and post assemblies. This product was discontinued June 19, 2019; the PBG2424F serves as the designated replacement.
