English
When a fast-growing European beauty technology brand decided to enter the home skincare market, its engineers faced a familiar dilemma: find a supplier who could deliver precision dual-wavelength LED chips with clinical-grade consistency, or delay the launch by another season. This case study shows how Dongguan Lanjin Optoelectronics Co., Ltd. (东莞市蓝晋光电有限公司) turned that challenge into a best-selling LED facial mask.
Client Background
The client is a beauty & wellness device brand headquartered in Europe, specializing in at-home skincare technology. Its R&D team was developing a next-generation LED facial mask that combines red light and near-infrared therapy in one slim, wearable device. With distribution channels across the EU, North America and Asia, the brand required components that could satisfy CE certification, RoHS and REACH compliance — while keeping a launch timeline of under four months.
The Challenge
- Dual-wavelength emission — the mask needed red 660nm and near-infrared 850nm in one compact footprint for effective skin therapy.
- Batch-to-batch consistency — wavelength drift of just a few nanometers changes treatment results, so tight binning was non-negotiable.
- ESD-safe manufacturing — beauty devices are assembled by contract manufacturers worldwide; chips had to survive automated SMT lines without static damage.
- Scalable supply — from pre-production samples to tens of thousands of chips per month, with stable lead times.
The Solution: Custom IR LED Chip Supply from Lanjin
After evaluating suppliers in three countries, the client selected Dongguan Lanjin Optoelectronics for its vertically integrated, anti-static production line and proven track record in beauty-therapy LEDs. Lanjin’s engineers proposed a two-chip solution matched to the mask’s treatment zones:
| Parameter | 3030 Bi-Color IR LED Chip | 3528 Dome-Lens IR LED Chip |
|---|---|---|
| Wavelength | 660nm (red) + 850nm (NIR) | 850nm / 940nm |
| Package | 3030 SMD, 3.2×3.0×0.6mm | 3528 SMD dome lens |
| Forward Voltage | 1.8-2.4V / 1.3-1.7V | 1.3-1.7V |
| Viewing Angle | 120° | 60° (focused) |
| Quality Features | 99.99% gold wire, instant response <100ns, RoHS & REACH, 50,000h lifetime | |
The 3030 bi-color chip drives the mask’s main therapy zones, while the 3528 dome-lens chip focuses near-infrared energy around the eyes and jawline for deeper tissue penetration. All components were produced in Lanjin’s purified, constant-temperature, humidity-controlled anti-static workshops and shipped with full spectroradiometer test reports.
Results & Key Outcomes
- On-time launch — pre-production samples delivered in 10 days; first mass order of 120,000 chips completed in 21 days.
- Strict wavelength control — 660nm ±5nm and 850nm ±5nm binning across all batches, verified by third-party inspection.
- Production reliability — AOI pass rate above 99.5% on the client’s SMT lines, with zero ESD-related failures reported.
- Compliance ready — full RoHS and REACH documentation accelerated the client’s CE certification process.
- Repeat orders — the client has since placed three additional orders and expanded the product line with a hand-held therapy wand.
Customer Feedback
“Lanjin was the only supplier that combined dual-wavelength chip capability, strict quality control and the flexibility to support our launch timeline. The consistency of their 660nm and 850nm LEDs gave our engineers complete confidence in the final product,” said the client’s procurement director.
About the Supplier
Dongguan Lanjin Optoelectronics Co., Ltd., founded in 2005, is an ISO9001:2015 certified LED manufacturer with a 2,500 m² factory, 2 national invention patents and 12 utility-model patents. Its BOSMFC brand covers SMD LEDs, through-hole LEDs, IR and UV LED chips, LED displays and PCB assembly — serving beauty, medical, horticulture and automotive OEMs worldwide. Looking for a reliable IR LED chip for beauty devices? Contact Lanjin for free samples and a tailored quotation.