860nm-1100nm long wave filter 40*1mm optical glass filter

860nm-1100nm long wave filter 40*1mm optical glass filter

glass optical filter

custom optical filter

factory offer optical filter

860nm-1100nm optical filter

Precision long wave pass interference filter designed to transmit wavelengths from approximately 860 nm through 1100 nm (NIR/SWIR) while blocking shorter visible and near-NIR wavelengths below 860 nm (UV–VIS–early NIR).

Fabricated on a 1.0 mm thick optical glass substrate (BK7/K9 or fused silica) with hard dielectric multilayer coating via ion-assisted deposition. Ideal for NIR imaging/sensing, IR LED isolation, oximetry reference channel, and machine vision systems requiring removal of visible ambient light while passing NIR signal.

Available in custom dimensions and cut-on wavelengths (780/850/900/950 nm etc.).

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