Variable Wheel Attenuator, 25,4 mm

• 4 wheels, each containing 3 filters & 1 empty space
• 4 fixed positions per wheel
• Maximum thickness 3 mm
• Filter diameter - Ø20/Ø25.4 mm
• Non-parallel filters (inclined by 4°)
• Maximum deviation 0.09 mm
• Clear aperture Ø18/Ø20 mm
• C-mount threads on both ends
• Connecting adapters available
• Motorised Closed Variable Wheel Attenuator
• Motorized Variable Wheel Attenuator
• Closed Variable Wheel Attenuator

Variable Wheel Attenuator 990-0604-02 is a basic model with 4 filter-set wheels. Each wheel contains 4 filter mounts each of Ø20 mm with a clear aperture of Ø18 mm. Each filter mount is inclined by 4°to avoid retroreflections. Each wheel has 4 fixed positions. You can use any of these 4 filter positions as an optical axis. The back and front panels do not obscure them. Both panels have 1"-32 threaded holes (C-Mounts).

Additionally, you may order standard connecting adapters 10AR168, 10A168, and 10R168. Custom adapters are available. The variable wheel attenuator mounts through the M6 hole in the bottom plate.

According to your request, we may design an attenuator with any number of wheels.
990-0604-02 model is designed to accept 1" (25.4mm) filters with a maximum thickness of 3mm. This model comes WITHOUT filters
990-0604-01 model is designed to accept 20 mm filters with a maximum thickness of 3mm. Filters are included - please select 6 filters from our standard 12-filter set (see table below).