Infrared filter: Thickness 0.3-1.2mm

Q: Why do front camera modules need infrared filters?

Front camera modules require infrared filters because camera sensors are sensitive to both visible and infrared light. Without filtering, IR light causes color distortion, reduced contrast, and hazy images. The filter ensures only visible light reaches the sensor for accurate color reproduction.

Q: What happens if an infrared filter fails in a camera module?

Filter failure results in infrared contamination of images, causing color shifts (typically toward red/purple tones), reduced sharpness, poor contrast in daylight conditions, and inaccurate color representation in photographs and video.

Q: Can infrared filters be replaced or repaired in camera modules?

Typically not user-replaceable as they are integrated into the optical stack during manufacturing. Replacement requires specialized equipment and calibration. In most consumer devices, filter damage necessitates complete camera module replacement.

Component Specifications

Definition

An infrared filter is an optical component integrated into front camera modules to selectively block infrared wavelengths while transmitting visible light. It prevents IR interference that can cause color distortion, haze, and reduced contrast in digital imaging systems, ensuring accurate color reproduction and sharp image quality for applications requiring true-to-life visual representation.

Working Principle

Works through wavelength-selective absorption or interference coating technology. The filter material or multilayer coating reflects or absorbs infrared radiation (typically 700nm-1100nm) while allowing visible light (400nm-700nm) to pass through to the camera sensor. This spectral separation prevents IR contamination of the visible light image data.

Materials

Optical glass substrate (e.g., BK7, B270) with dielectric interference coatings; alternative materials include IR-cut resin or composite optical polymers with embedded IR-absorbing dyes. Coating materials typically include silicon dioxide (SiO2), titanium dioxide (TiO2), or tantalum pentoxide (Ta2O5) in multilayer stacks.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Thickness	0.3-1.2mm
IR Rejection	>95% at 850nm
Transmittance	>90% in visible range
Blocking Range	700-1100nm (IR spectrum)
Surface Quality	60-40 scratch-dig
Transmission Range	400-700nm (visible spectrum)
Operating Temperature	-30°C to +85°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 10110, ISO 9022, DIN 3140, DIN 58196

Parent Products

This component is used in the following industrial products

Front camera module

Integrated optical imaging component for smartphone front-facing photography and video capture

View Product Details

Engineering Analysis

Risks & Mitigation

Coating degradation from UV exposure
Physical damage from impact or abrasion
Thermal stress cracking
Moisture ingress affecting optical properties
Adhesive failure in laminated designs

FMEA Triads

Trigger: Improper coating application during manufacturing
Failure: Insufficient IR blocking leading to image quality degradation
Mitigation: Implement spectral testing at multiple production stages with automated rejection of non-conforming units

Trigger: Thermal expansion mismatch between filter substrate and housing
Failure: Cracking or delamination under temperature cycling
Mitigation: Use materials with matched thermal expansion coefficients and stress-relieving mounting designs

Trigger: Environmental exposure to moisture and contaminants
Failure: Coating degradation and reduced optical performance over time
Mitigation: Apply protective hydrophobic coatings and ensure proper sealing in camera module assembly

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±5nm cutoff wavelength, ±2% transmission variance across visible spectrum, angular dependence <5% at 30° incidence

Test Method

Spectrophotometric analysis (ASTM E903), environmental testing per IEC 60068-2, mechanical testing per ISO 9022, image quality testing using standardized color charts and IR illumination sources

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Infrared filter

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

SENBA Sensing Technology Co., Ltd.

Shenzhen, Guangdong, CN

Also makes: Pressure Gauge/Sensor, Light Sensor, Gas Sensor and 1 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Infrared Filter”
View source page ↗ senbasensor.com · checked 2026-09-08

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

Why do front camera modules need infrared filters?