Customized
IR-Cut Filter Glass
Precision-engineered infrared cut-off filters delivering >90% visible-light transmission and <0.1% NIR leakage. Designed for imaging systems, machine vision, and medical optics where color fidelity and signal purity are non-negotiable.
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.
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.
Anti-Fingerprint (AF)
Oleophobic fluoride top-coat. Contact angle >110°. Ideal for medical imaging panels and touch-enabled optical windows.
Absorptive IR-Cut
Glass-body absorption type (e.g., Schott KG series equivalent). Eliminates angle-dependent shift. Preferred for wide-angle lens modules.
Custom Stack Design
Bespoke multi-layer thin-film stacks designed to your exact spectral profile. Dual-band pass, notch filters, and hybrid configurations available.
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
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1Submit Drawings or RequirementsDXF, PDF, or plain-language specs accepted. We'll confirm feasibility within 24 hours.
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2Engineering Review & DFMOur optical engineers optimize your design for manufacturability, cost, and yield.
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3Prototype (7-14 Days)First articles with full spectral measurement reports (traceable to NIST standards).
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4Mass Production & 100% InspectionEvery piece inspected. CoC, spectral data, and packaging documentation included.
Where Precision Matters Most
IR-Cut filters are mission-critical components across a broad spectrum of high-value industries.
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 & 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
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 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
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
The "Procurement Mindset" Advantage
Founded by engineers, evolved by procurement experts. Iris -- with 12 years as a professional optical buyer -- joined Winson in 2025 to embed supply chain transparency into every production decision. We understand what keeps procurement managers awake at night.
100% Inspection, Zero Surprises
Every filter measured on calibrated spectrophotometers. Measurement reports ship with every order. No sampling -- full lot inspection.
Engineering-First Communication
Respond to RFQs within 24 hours with DFM feedback. Our team speaks your language -- DXF, Zemax, spectral data, and tolerance stacks.
Full Compliance Documentation
ISO 9001, RoHS, REACH declarations ready. ITAR-friendly processes. EU and North America import documentation supported.
Scalable from Prototype to Mass Production
MOQ as low as 10 pieces for R&D. Same process, same equipment, same quality at 100,000+ pieces per month. No re-qualification needed.
Manufacturing Infrastructure
Key Equipment
- High-precision spectrophotometers (0.1 nm resolution)
- Ion-assisted deposition (IAD) thin-film coating chambers
- ISO Class 6 cleanroom polishing and coating environment
- Automated interferometric surface flatness testers
- CNC diamond-wheel edge grinding (±0.02 mm dimensional tolerance)
- Automated silk-screen printing lines for marking/masking
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?
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?
What quality documentation comes with each shipment?
What is the minimum order quantity (MOQ) for custom IR-cut filters?
How do you handle the wavelength shift with angle of incidence (AOI)?
What are your lead times for prototypes and production orders?
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.
"The spectral data matched our requirements exactly. Winson's team identified a potential AOI issue in our design before production -- saved us weeks of re-work. Genuinely the most technically capable optical supplier we've worked with."
"We qualified Winson as a second source for our ADAS camera program. Their lot-to-lot consistency is outstanding -- spectral data variance is well within our ±5 nm spec window across 12 production lots."
"Prototype to production in 3 weeks. The RoHS and REACH documentation was ready before we even asked. This is how a modern optical supplier should operate."
Request a Custom Quote
Share your requirements -- drawing, datasheet, or plain description. Our optical engineers will respond within 24 hours with technical feasibility and pricing.
"Having been on the buyer's side for 12 years, I know exactly what information you need to make a confident sourcing decision. Send us your specs -- I'll make sure you get a complete, transparent answer."
Precision You Can Measure. Certainty You Can Count On.
From a 10-piece prototype to 100,000-piece production runs -- every IR-Cut filter leaves our facility with full spectral data and zero compromises.