395nm narrow band filter coated lens UV filter half bandwidth 10nm cut-off depth OD4 optical filter

395nm narrow band filter coated lens UV filter half bandwidth 10nm cut-off depth OD4 optical filter

glass optical filter

custom optical filter

factory offer optical filter

395nm optical filter

Precision UV narrow bandpass interference filter deposited on UV-grade optical substrate (BK7 or Fused Silica), centered at 395 nm with 10 nm half-bandwidth (FWHM) and ≥ OD4 blocking outside the passband (typically 200–1100 nm).

Designed to isolate the 395 nm violet/near-UV emission from ambient light or adjacent wavelengths — ideal for UV LED/diode isolation, fluorescence excitation filtering, UV curing monitoring, and biomedical detection systems.

Available as standalone filter window or integrated onto a plano-convex / aspheric lens (filter-coated lens) per customer drawing.

Description

395nm narrow band filter coated lens UV filter half bandwidth 10nm cut-off depth OD4 optical filter

Specifications:

Center Wavelength (CWL): 395 nm ± 2 nm
Half Bandwidth (FWHM): 10 nm ± 2 nm (Half Power Bandwidth)
Peak Transmittance (Tpeak): ≥ 35%–50% (typical ion-assisted deposition; >60% possible on FS)
Blocking Range: 200–1100 nm (or specified, e.g. 300–700 nm + 750–1100 nm)
Blocking Level (Cut-off Depth): ≥ OD4 (0.01% transmission) outside passband; OD6 optional
Substrate Material: UV Fused Silica (JGS1, preferred for <400 nm) or N-BK7 (UV-grade)
Substrate Form: Plano-Plano Filter Window / Plano-Convex Lens with filter coating on flat side / Aspheric Lens (L-BAL35) with filter coating
Substrate Diameter: 10 mm – 100 mm (common: Ø12.5 / Ø25.4 / Ø50 mm)
Substrate Thickness: 1.0 / 2.0 / 3.0 mm (windows); per lens design if integrated
Surface Quality: 60-40 / 40-20 Scratch-Dig
Surface Flatness (Window): λ/4 or λ/10 @ 632.8 nm
Parallelism (Window): ≤ 1 arcmin (standard); ≤ 10 arcsec (precision)
Incidence Angle: Designed for 0° ± 5° (custom tunable with AOI)
Environment: Humidity & thermal cycled per MIL-STD-810; no peeling / shift > 2 nm
Mounting: Unmounted / Anodized aluminum cell / Threaded ring (M12/M25 etc.)

Factory custom optical filter,can cutom as your required,

please contact our sales manager

Contact: Rebecca Xu

EmailL: rebecca@supplieroptical.com

We are professional manufacture on the optical lenses &lasers for over 20 years experience.
With the advanteges,we offer optical products in the fileds of University laboratory, Industry, Scientific research,Medical treatment, Mechanical equipments, lasers and Construction industry and so on.
We can provide optical lenses, optical prisms, high-precision Powell prisms, right-angle prisms, laser lenses, filters, aspherical lenses, collimating lenses, optical glass lenses, optical reflectors, cylindrical lenses, laser modules, laser heads, optical glued lenses, optical rod mirrors, etc.
Looking forward to communicating whether we have the opportunity to cooperate. For the lens/laser products you need, I would like to quote our competitive price.

Please contact for any custom needs,
Contact:Rebecca Xu