Customized IR-Cut Filter Glass Manufacturer

Designed for imaging systems, machine vision, and medical optics where color fidelity and signal purity are non-negotiable.

Production Gallery

IR-Cut Filter Glass -- What We Actually Ship

Every piece shown here passed our 100% outgoing inspection. Dual-bandpass coatings, precision-cut edges, and verified spectral performance -- not lab samples, but real mass-production batches.

IR-Cut Filter Glass -- dual-bandpass coating, batch sample

IR-Cut Filter Glass -- precision-cut edge, cleanroom production

IR-Cut Filter Glass -- spectral transmission verified, mass production

IR-Cut Filter Glass -- AR coating, industrial camera application

IR-Cut Filter Glass -- surface roughness Ra < 0.5nm, outgoing QC passed

IR-Cut Filter Glass -- custom dimension, OEM batch delivery

All images are actual production samples -- 100% outgoing inspection passed, ISO 9001 process controlled.

Technical Excellence

Product Specifications

Every parameter engineered to spec. Every batch traceable. Every shipment inspected.

Spectral Performance

Visible Transmission (400-650 nm)	> 90%
NIR Blocking (700-1100 nm)	OD 4+ (< 0.01% T)
Cut-off Wavelength (Standard)	650 nm ± 2 nm
Cut-off Slope (T 80% → 1%)	< 20 nm
Refractive Index (nd)	1.52 ± 0.005
Abbe Number (Vd)	64.2

Transmission Profile

Representative transmission curve -- actual data provided with each shipment

Dimensional & Surface

Standard Thickness	0.3 mm - 3.0 mm
Thickness Tolerance	± 0.05 mm
Surface Flatness	λ/4 @ 633 nm
Surface Quality (Scratch/Dig)	60/40 (MIL-PRF-13830B)
Parallelism	< 1 arc-minute
Edge Chamfer	0.1-0.3 mm (customizable)

Environmental & Mechanical

Operating Temperature	-40°C to +85°C
Storage Temperature	-55°C to +125°C
Humidity Resistance	85% RH @ 85°C (MIL-STD)
Adhesion (Tape Test)	Pass ASTM D3359
Substrate Material	BK7, B270, Fused Silica, Sapphire
Laser Damage Threshold	> 5 J/cm² (ns pulse)

Hard Coating (HC)

Pencil hardness ≥ 6H. Abrasion-resistant for high-contact applications such as handheld devices and industrial scanners.

Standard Option

Anti-Reflection (AR)

Single-layer or multi-layer AR coating reducing surface reflection to <0.5% per surface across the visible band (400-700 nm).

Dual AR + IR Block

Combined AR visible-band coating with integrated thin-film IR-blocking stack. Maximizes SNR in CMOS/CCD imaging systems.

Premium

Anti-Fingerprint (AF)

Oleophobic fluoride top-coat. Contact angle >110°. Ideal for medical imaging panels and touch-enabled optical windows.

Medical Grade

Absorptive IR-Cut

Glass-body absorption type (e.g., Schott KG series equivalent). Eliminates angle-dependent shift. Preferred for wide-angle lens modules.

Wide-Angle

Custom Stack Design

Bespoke multi-layer thin-film stacks designed to your exact spectral profile. Dual-band pass, notch filters, and hybrid configurations available.

Fully Custom

Dimensional Customization

Shape	Round, Square, Rectangle, D-shape, Custom
Diameter (Round)	Ø 3 mm - Ø 200 mm
Rectangular Size	Up to 200 × 200 mm
Thickness Range	0.3 mm - 5.0 mm
Cut-off Wavelength	600 nm - 950 nm (customizable)

Custom Workflow

1

Submit Drawings or Requirements

DXF, PDF, or plain-language specs accepted. We'll confirm feasibility within 24 hours.
2

Engineering Review & DFM

Our optical engineers optimize your design for manufacturability, cost, and yield.
3

Prototype (7-14 Days)

First articles with full spectral measurement reports (traceable to NIST standards).
4

Mass Production & 100% Inspection

Every piece inspected. CoC, spectral data, and packaging documentation included.

Industry Applications

Where Precision Matters Most

IR-Cut filters are mission-critical components across a broad spectrum of high-value industries.

Machine Vision

Industrial Machine Vision

Eliminates NIR interference in barcode scanners, AOI systems, and pick-and-place robots. Ensures RGB color accuracy under mixed lighting conditions.

Sharp cut-off slope for high-contrast imaging
Wide operating temperature range
High uniformity across aperture

Medical endoscopy and surgical imaging optics

Medical Imaging

Medical & Surgical Imaging

Endoscopes, fundus cameras, and surgical microscopes demand biocompatible, sterilization-resistant filters with clinical-grade color rendering.

RoHS compliant, biocompatible materials
Anti-fingerprint coating for sterile handling
Full lot traceability and CoC documentation

Security & Surveillance

Day/night switchable CCTV and IP cameras require mechanically robust IR-cut filters with precise cut-off for true-color daytime and NIR-pass nighttime modes.

Thin profile for compact module integration
High volume production consistency
Weatherproof coating options available

Scientific spectroscopy and laboratory optical instruments

Scientific Instruments

Spectroscopy & Lab Instruments

Fluorescence microscopes, Raman spectrometers, and flow cytometers require ultra-steep edge filters with minimal autofluorescence substrate.

Fused silica substrate option (low autofluorescence)
OD 6+ blocking available on request
NIST-traceable measurement data

Automotive

Automotive ADAS & HUD

Forward-facing cameras, DMS (driver monitoring), and surround-view systems require AEC-Q qualified optical filters with extended thermal stability.

-40°C to +125°C thermal cycling stability
Vibration and shock resistance
IATF 16949 supply chain documentation

Consumer Electronics

Smartphone & Consumer Cameras

Ultra-thin (0.3 mm) IR-cut filters for smartphone camera modules, action cameras, and drone imaging systems where weight and form factor are critical.

Ultra-thin down to 0.3 mm
High-volume pricing with consistent quality
Drop-in replacement for standard modules

Expert Answers

Frequently Asked Questions

Technical questions from procurement engineers and R&D teams -- answered.

What is the difference between absorptive and reflective (interference) IR-cut filters?

Absorptive filters use a doped glass substrate (e.g., Schott KG series) that absorbs NIR energy. They are angle-insensitive -- ideal for wide-angle lenses where the angle of incidence varies significantly. The trade-off is heat buildup under high-intensity illumination.

Reflective (interference) filters use thin-film coatings to reflect NIR. They offer sharper cut-off slopes and are preferred for telecentric or low-divergence optical systems. However, the cut-off wavelength shifts with angle of incidence (typically ~0.1 nm/degree). We recommend the type based on your system's chief ray angle and illumination conditions.

Can you match our existing supplier's spectral performance exactly?

Yes. Send us your current supplier's datasheet or measured spectral curve, and our coating engineers will design a matching stack. We routinely qualify as a second source for customers requiring supply chain redundancy. We can also improve on certain parameters (e.g., tighter cut-off slope, higher blocking OD) while maintaining drop-in compatibility with your existing mechanical assembly.

What quality documentation comes with each shipment?

Every shipment includes: (1) Certificate of Conformance (CoC) signed by QC; (2) Spectral transmission data (measured, not nominal) for each lot; (3) RoHS/REACH Declaration of Conformity; (4) Dimensional inspection report. For medical and automotive customers, we also provide full lot traceability records, material certifications, and process control charts on request.

What is the minimum order quantity (MOQ) for custom IR-cut filters?

For prototype and engineering samples: MOQ 10 pieces. For production runs: typically 100-500 pieces depending on substrate size and coating complexity. There is no re-qualification penalty when scaling from prototype to production -- we use the same equipment, same process parameters, and same operators. Volume pricing tiers start at 500, 2,000, and 10,000+ pieces.

How do you handle the wavelength shift with angle of incidence (AOI)?

For interference-type filters, the cut-off wavelength blue-shifts with increasing AOI at approximately 0.08-0.12 nm per degree. For systems with F/# < 2.8 or chief ray angles > 20°, we recommend either: (a) designing the filter with a compensated nominal cut-off to account for the expected AOI distribution, or (b) switching to an absorptive substrate type. Share your optical system parameters and we'll recommend the optimal solution.

What are your lead times for prototypes and production orders?

Prototypes (10-50 pcs): 7-14 business days from drawing approval.
Small production runs (100-1,000 pcs): 15-25 business days.
Large production runs (>5,000 pcs): 25-40 business days.

Expedited production (50% lead time reduction) is available for an additional fee. We recommend buffer stock programs for customers with regular monthly demand -- we can pre-produce and hold inventory for just-in-time delivery.