Near-infrared optical filter #23-6 series

interference

Overview
Everix Ultra-Thin OD 4.0 Notch Filters are flexible, scratch‑insensitive thin‑film interference notch filters providing OD 4 rejection across visible and near‑infrared wavelengths. They deliver transmission and rejection performance comparable to many hard‑oxide filters while preserving a narrow rejection‑band profile. Intended for integration into handheld or portable medical, measurement and optical instruments where reduced weight and short optical path length are design constraints.

Key Features

• Maximum thickness options: 300 µm and 400 µm
• Flexible, scratch‑resistant extruded thin‑film construction
• Sharp spectral rejection profiles similar to hard oxide filters

Common Specifications
Diameter (mm): 12.50
Dimensional tolerance (mm): ±0.15
Clear aperture (%): >90
Optical density (average): OD 4
Transmission (average): >85%
Center wavelength (CWL) tolerance: ±2%

Available variants (examples)

• 405 nm — transmission range: 375–1200 nm — max thickness: 300 µm
• 457 nm — 375–1200 nm — 300 µm
• 473 nm — 375–1200 nm — 300 µm
• 488 nm — 400–1200 nm — 300 µm
• 514 nm — 400–1200 nm — 300 µm
• 532 nm — 400–1200 nm — 300 µm
• 577 nm — 400–1200 nm — 300 µm
• 633 nm — 400–1200 nm — 300 µm
• 642 nm — 400–1200 nm — 300 µm
• 658 nm — 400–1200 nm — 300 µm
• 685 nm — 400–1200 nm — 300 µm
• 808 nm — 450–1200 nm — 400 µm
• 980 nm — 525–1200 nm — 400 µm
• 1064 nm — 600–1300 nm — 400 µm

Product details
Custom filter designs, additional diameters and part‑specific configurations are available directly from Everix. Consult the datasheet for exact spectral curves and mechanical drawings.

Technical specifications

• Diameter: 12.50 mm
• Dimensional tolerance: ±0.15 mm
• Clear aperture: >90%
• Optical density (average): OD 4
• Transmission (average): >85%
• Center wavelength tolerance: ±2%
• Maximum thickness options: 300 µm and 400 µm
• Construction: flexible, scratch‑resistant extruded thin‑film interference
• Typical applications: handheld/portable medical, measurement and optical devices requiring low weight and short optical path