Factory Supply coated glass filter Red light narrow band filter 625-665nm band pass K9 red glass optical filter

Factory Supply coated glass filter Red light narrow band filter 625-665nm band pass K9 red glass optical filter

glass optical filter

custom optical filter

factory offer optical filter

Factory-produced red narrow bandpass interference filter fabricated on high-quality K9 (N-BK7) optical glass, designed to transmit a selectable passband within the 625–665 nm red region (typical CWL 635nm or 650nm) while blocking UV, visible blue/green, and NIR wavelengths.

Hard dielectric coating via ion-assisted deposition ensures high environmental stability. Available as filter windows, or integrated onto plano-convex / aspheric lenses (filter-coated lens) for red LED/LD isolation, line scan illumination, and machine vision color separation.

Description

Factory Supply coated glass filter Red light narrow band filter 625-665nm high transmittance band pass K9 red glass optical filter

Specifications:

Passband Range (CWL options): 625–665 nm (typical Center Wavelength 635 nm / 650 nm ± 2 nm)
Half Bandwidth (FWHM): 10 nm / 20 nm / 30 nm (custom 5–50 nm on request)
Peak Transmittance (Tpeak): ≥ 40%–60% (typical; >70% possible with optimized design)
Blocking Range: 300–1100 nm (or specified sub-ranges)
Blocking Level (Cut-off Depth): ≥ OD3 / OD4 standard (OD5–OD6 optional)
Substrate Material: K9 (Chinese equiv. to N-BK7), polished both sides
Substrate Form: Plano-Plano Filter Window / Plano-Convex Lens with filter on flat side / Aspheric Lens + Filter Coating (on request)
Substrate Diameter: 10 mm – 150 mm (common: Ø12.7 / 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 @ 632.8 nm
Parallelism: ≤ 1 arcmin (standard); ≤ 10 arcsec (precision)
Incidence Angle: 0° ± 5° (custom tunable with AOI)
Coating Durability: Meets MIL-C-675C humidity & adhesion; solvent resistant

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