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Custom Dual Band 850nm 940nm ir filter Bandpass Filter For Biometric Imaging

Custom Dual Band 850nm 940nm ir filter Bandpass Filter For Biometric Imaging

FOB Price

US $13.2
1 - 100 piece
US $10.5
101 - 500 piece
US $7.8
501 - 1000 piece

group nameIR Cut / IR Pass Filters
Min Order1 piece
brand nameFELIX GLASS optical glass Manufacturing base
modelFG-DUAL850-940-FILTER
payment methodL/C, D/A, D/P, Western Union
update timeFri, 17 Jul 2026 09:58:09 GMT

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Paramtents

Dual Passbands 850 nm & 940 nm infrared wavelength
FWHM 20 nm, customizable 5~50 nm
Peak Transmission ≥90% transmittance at 850nm & 940nm passbands
Blocking Range 400–700nm full visible light spectrum cut-off
Blocking Depth OD4 ~ OD8 out-of-band light suppression
AOI : 0° standard, customer-specified angle available
Substrate Premium N-BK7 optical glass, fused silica optional
Shape Custom round disc, square & rectangle sheet
Coating Multi-layer sputtered interference anti-stray-light coating

Packging & Delivery

Size10cm x10cm x12cm
Weight0.5kg / piece
Min Order1 piece

Briefing

Custom OEM dual band 850&940nm IR bandpass filter for facial/fingerprint biometric camera, full optical inspection.

Detailed

Custom Dual-Band 850nm / 940nm Infrared Bandpass Filter

Felix Glass dual-band infrared bandpass filter is high-precision dual-wavelength interference optical component for biometric imaging. It stably transmits 850nm & 940nm target infrared bands, while fully blocking 400-700nm stray visible light.

Adopted N-BK7 glass substrate and durable multi-layer sputtered coating, our dual band filter features stable spectral performance, low light drift and long service life for biometric camera modules.

Core Product Advantages

- Dual IR passband design, compatible with 850nm & 940nm dual lighting biometric systems

- Deep OD4~OD8 visible light blocking, eliminate imaging noise effectively

- ≥90% high peak transmittance, improve infrared camera sensitivity

- Full customization on shape, thickness, FWHM, edge blackening & blocking OD

- Stable multi-layer coating, anti-oxidation for long-term continuous operation

- 100% full spectral & dimensional inspection before delivery

Custom Processing Options

1. Shape Custom: Round, square, rectangle, special irregular outline

2. Spectral Custom: Adjustable FWHM, blocking depth OD2-OD8, custom wavelength

3. Edge Treatment: Raw edge, blackened edge, chamfered polished edge

4. Coating Custom: Single/double side multi-layer interference coating

Typical Application Scenarios

- Facial recognition access control camera modules

- Smartphone fingerprint identification optical sensors

- Biometric attendance & door lock imaging equipment

- Dual-wavelength industrial machine vision inspection

- Medical near-infrared optical testing instruments

OEM Manufacturing Capability

We provide one-stop OEM/ODM optical filter service: precision cutting, spectral coating, edge finishing and full spectral testing. Support prototype sampling, small trial batches and mass bulk production. All filters pass strict optical inspection to meet your customized drawing requirements.

FAQ

1. What spectral performance does this dual band IR filter support?

It transmits 850nm & 940nm infrared bands, fully blocks 400-700nm visible light, customizable FWHM and OD blocking level.

2. Can I customize the size, thickness and edge process?

Yes, we support full custom shape, dimension, thickness, edge blackening and coating parameters.

3. What substrate material do you use?

Standard N-BK7 optical glass, fused silica alternative available for high-temperature use.

4. Do you offer free samples and mass production?

Free prototype samples available, support small batch trial and large-scale mass order, full inspection for all finished filters.

Request a Quote

Send us your required dimension, FWHM, blocking OD, quantity and drawing. Our optical engineer team will provide tailored quotation and optical solution within 24 hours.

Related Products:

850nm Single Band Filter

940nm Single Band Filter

IR Cut Filter For Biometric Camera

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Nearest port for product export: Shenzhen, Guangzhou

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