Description
860nm-1100nm long wave filter 40*1mm optical glass filter
Specifications
Filter Type: Long Wave Pass (LWP) / Cut-on Filter
Cut-on Wavelength (50% T point): 860 nm ± 5 nm (780 / 850 / 900 / 950 nm on request)
Transmission Band: 870–1100 nm (extends to 1700 nm on fused silica)
Average Transmission (Tavg): ≥ 90%–93% (870–1100 nm)
Blocking Band: 300–850 nm (UV + Visible + early NIR)
Blocking Level: ≤ 0.1% (OD3) standard; OD4–OD6 optional
Substrate Material: N-BK7 (K9) / UV Fused Silica (JGS1 — for extended NIR)
Dimensions: 40 mm × 1.0 mm (custom size available; rounds/squares/rectangles)
Size Tolerance: ±0.1 mm (length/width/diameter); ±0.05 mm (thickness)
Surface Quality: 60-40 / 40-20 Scratch-Dig
Surface Flatness: λ/4 @ 632.8 nm
Parallelism: ≤ 1 arcmin (standard); ≤ 10 arcsec (precision)
Incidence Angle: 0° ± 5°
Coating Durability: Meets MIL-C-675C (humidity, adhesion, solvent resistance)
Edge Treatment: Ground / beveled; optional edge blackening
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
