Band-pass optical filter #86-966

glassfor machine vision systemsfor microscopy

Product Overview
TECHSPEC® Hard Coated OD 4.0 50 nm bandpass filters are engineered for imaging systems such as machine vision inspection, fluorescence microscopy and biotech/analytical instruments. These single-substrate, hard-coated filters provide deep out-of-band blocking and high in-band transmission to improve signal-to-noise for detection and imaging applications.

Key Features

• High transmission with deep out-of-band blocking (average OD ≥4.0)
• 50 nm nominal bandwidth (family common spec: ~45 nm)
• Available at multiple VIS and IR center wavelengths and diameters
• Hard-coated construction for steeper spectral slopes and consistent performance

Performance Note
Filters are optimized for spectral performance rather than high laser damage threshold. Typical LIDT: ~1 J/cm2 @ 532 nm, 10 ns.

Common Specifications

• Construction: Mounted in black anodized ring; mount thickness 5.0 ±0.1 mm
• Angle of Incidence: 0° (nominal)
• Optical Density (average): ≥4.0
• Substrate: Optical glass; Coating: Hard coated; Surface quality: 80-50
• Bandwidth (FWHM): family nominal 50 nm (typical table entry 45 nm)
• Blocking range (example): 200–1200 nm
• Durability: Adhesion/abrasion/cleaning per MIL-PRF-13830B and MIL-C-48497A; Environmental: MIL-STD-810H (humidity, temperature)

Applications

• Machine vision inspection
• Fluorescence microscopy
• Biotech and analytical instrumentation requiring improved signal-to-noise

Additional Information
Mounted TECHSPEC® filters include an arrow on the mount indicating the coated surface (S1); anti-reflective coating applied to the opposite surface (S2). Family offers multiple center wavelengths and diameters to suit imaging system requirements.

Technical Specifications

• Family: TECHSPEC® Hard Coated Bandpass Filters
• Typical LIDT: ~1 J/cm2 @ 532 nm, 10 ns
• Mount thickness: 5.0 ±0.1 mm; Surface quality 80-50