LEPWER Optoelectronics introduces the LD 1917 series of intelligent dimming dual-temperature COB light sources. This product boasts advantages such as high thermal conductivity, high color rendering index (CRI), and high power. Its excellent thermal conductivity and high-density beam output reduce light scattering, lower light loss, improve luminaire optical performance, and extend the lifespan of the light source. The product provides uniform and soft light color (Ra≥ 90), with an adjustable color temperature from 2700K to 6500K, meeting the rich color requirements of various lighting applications.

COB Light Source
The product’s dimensions and luminous surface are compatible with mainstream luminaire components on the market, offering high compatibility in optical components and simplifying lighting fixture design. It provides substantial design flexibility and energy efficiency, showcasing the advantages of dual-temperature COB products in lighting fixture design.
The COB LED LD 1917 features an ultra-high thermal conductivity substrate, resulting in higher temperature tolerance, greater physical strength, and enhanced reliability. Its high color rendering index (CRI) and optical control enable precise light control, making the light more penetrating. The COB LED LD 1917 utilizes high-density packaging and an extremely small emitting surface, achieving high-density lumens output per unit area. The COB LED LD 1917 is LM-80 certified.
Product Features:
- Ultra-High Thermal Conductivity: Ultra-high thermal conductivity substrate, resulting in higher temperature tolerance, greater physical strength, and enhanced reliability.
- High Color Rendering Index (CRI): High color rendering index (CRI) and optical control enable precise light control, making the light more penetrating.
- High Power: High-density packaging and an extremely small emitting surface enable high-density lumens output per unit area.
- Certification: LM-80 certified.




As a leader in the high-power LED industry, LEPWER Optoelectronics has always adhered to a quality-centric and market-oriented approach, committed to providing customers with more efficient and higher-quality lighting product solutions. As a leader in commercial lighting applications, COB light sources bring a superior lighting experience to various commercial venues, illuminating new trends in the future commercial world!
About Gainer LED:
Gainer LED was established in 2012. The company focuses on providing advanced technology solutions for medium and high power general lighting, special lighting and high-end display fields. Its products are widely used in commercial lighting, industrial lighting, smart buildings and professional display screens. Relying on a global marketing network and professional technical service system, Gainer LED continues to provide global customers with high-performance lighting products that meet international standards and fully meet the diverse needs of the market.
For more customer service needs, please contact us:
- Phone: +8615818679054
- Tel : +86-755-27835429
- Email: info@gainer-led.com