In the expanding smart home ecosystem, smart speakers equipped with infrared (IR) remote capabilities function as central control hubs for home appliances like air conditioners and televisions. However, standard polycarbonate (PC) resins block infrared light waves, causing delayed remote responsiveness, weak signal penetration, and control failure. Furthermore, using separate external IR windows complicates mold designs and compromises sleek product aesthetics.
To overcome optical interference and structural design limitations, Qingdao Zhongxin Huamei Plastic Co., Ltd. engineers specialized Infrared Transmitting PC (Polycarbonate) resin, designed specifically for smart speaker housings, IR remote windows, and smart sensors.
Key Optical, Mechanical & Aesthetic Advantages
Our functional IR Transmitting PC compound optimizes optical performance across targeted infrared wavelengths while effectively shielding internal electronic components:
[Internal Electronic Components & IR Diodes]
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[Visible Light Shielding Matrix (<5% Visible Transmittance)]
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[Seamless One-Piece Housing + >93% High IR Transmittance (940nm)] ➔ [Stable, High-Sensitivity Remote Control]
High Infrared Light Transmittance: Achieves over 90% IR transmittance in the 700–2000nm spectrum, with 91% transmittance at 850nm and up to 93% transmittance at the primary 940nm wavelength, ensuring rapid and uninterrupted IR signal transmission.
Visible Light Shielding for Integrated Aesthetics: Keeps visible light transmittance below 5%, concealing internal circuit boards and LED diodes. This enables a sleek, seamless one-piece housing design without separate IR window cutouts.
Customizable Optical Tuning: Allows precise customization of R, G, and B wavelength transmittance to align with specific sensor and camera lens specifications.
Robust Mechanical Integrity: Retains the high impact strength and physical rigidity of PC, boasting a tensile strength of 50 MPa and flexural strength of 73 MPa for complex enclosure molding.
High Molding Yield Rate: Monitored through an automated MES management system, batch-to-batch consistency helps consumer electronics molders increase finished product yield by ~5%.
Technical Specification Overview: IR Transmitting PC vs. Standard PC
| Performance Metric | IR Transmitting PC Resin | Standard Unmodified PC |
| Primary Functional Feature | High IR Transmittance / Visible Blocking | High Visible Light Clarity / Low IR Specificity |
| 940nm IR Transmittance | > 93% Transmittance | Heavily Attenuated / Blocked |
| Visible Light Shielding | < 5% Transmittance | High Transparency (~88%–90%) |
| Tensile & Flexural Strength | 50 MPa / 73 MPa | High Strength Matrix |
| Target Application Scope | Smart Speakers, VR, Security Cameras | General Enclosures, Lenses |
Partner with a Certified Source Compounding Factory
Selecting unverified optical resins often causes signal dead zones, batch color shifts, and mold defects. Established in May 1997 as an official joint venture enterprise backed by shareholders including CHIMEI Corporation, Qingdao Zhongxin Huamei Plastic Co., Ltd. brings 30 years of specialized compounding and color-matching expertise as a certified National High-Tech Enterprise.
Producing over 100,000 tons of engineering granules annually, we serve as a long-term material partner for leading global brands including Huawei, Wanhua, ByteDance, Midea, Goertek, WEGO, FAW, Cangzhou Mingzhu, and M&G Stationers. In addition to IR Transmitting PC, we supply prime Chimei ABS PA-757Q for high-gloss, low-odor enclosure injection molding.
Request a Technical Datasheet & Custom Optical Sample Batch
Direct Compounding Source: Qingdao Zhongxin Huamei Plastic Co., Ltd.
Global Support & WhatsApp: +8618765279757 (WeChat Available)
Official Corporate Email: info@qdzxhm.com.cn
Approved Commercial Shipping Terms: FOB / EXW Direct Factory Dispatched Only
Custom Sourcing Services: Tailored Wavelength Filtering (850nm/940nm Tuning), High-Impact Formulations, Custom Dye/Color Formulations, Sample Testing, and Technical Injection Support.
