Stepped Neutral Density Filters, Mounted NDFR-50S-1M

Stepped Neutral Density Filters, Mounted — Model NDFR-50S-1M

Stepped Neutral Density Filters, Mounted

Product Description

• Adjustable OD value by rotation the angle
• Circular, 8 or 10 different OD steps
• Applicable for 240 - 1200 nm wavelength

LBTEK Stepped Neutral Density (ND) Filter is composed of UV fused silica substrate and metal (Inconel) coating, designed for a transmission wavelength range of 240-1200 nm. The optical density (OD) range of the step neutral density filter is 0.04 to 1.0, 0.04 to 3.0, or 0.04 to 4.0, providing 8 or 10 steps of optical density adjustment through rotation. Available sizes include Ø50 mm and Ø100 mm, with coating radial angles of 297.5°±5.0° or 297.0°±5.0° depending on the size. In addition to standard step neutral density filters, LBTEK also offers various customization services. For specific customization requirements, please contact LBTEK Technical Support.

Stepped Neutral Density Filters, Mounted

• Substrate material: UV fused silica
• Coating: Inconel
• Size: Ø50 mm or Ø100 mm
• Mounted in a mechanical housing with scale

LBTEK's Mounted Stepped Neutral Density Filters feature a mechanical housing with angular scales and a rotation axis. The mount is precision-designed to minimize impact on the optical element's clear aperture while maintaining a compact structure, making it an excellent alternative to filter wheels. The side with the scale markings is the coated surface, and for optimal performance, it is recommended to have light incident from this side.