Custom Convex Lenses for Vehicles | Precision Automotive Optics

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Foshan Geqin Auto Parts Co., Ltd. – Professional Manufacturer of Automotive Lighting & Molds

Foshan Geqin Auto Parts Co., Ltd. – Professional Manufacturer of Automotive Lighting & Molds

Foshan Geqin Auto Parts Co., Ltd., established in 2011 and relocated in 2017, specializes in automotive lighting components and precision molds. The company produces high-quality convex lenses, reflectors, and headlights using advanced materials like PC and PMMA for superior optical performance. Their expertise extends to plastic injection molds and die-casting molds, supporting mass production of complex automotive and industrial parts. Geqin serves OEMs with customized solutions, emphasizing durability, precision, and compliance with international standards. The website highlights their capabilities in mold design, optical component manufacturing, and innovative lighting systems for enhanced vehicle safety and aesthetics.
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Why choose us?

Precision Optical Component Manufacturing

Specializing in high-precision convex lenses and reflectors for automotive lighting, we utilize advanced PC/PMMA materials with 90%+ light transmittance and UV resistance. Our optical components meet strict ECE/ISO standards for beam pattern accuracy and durability in extreme conditions (-40°C to 120°C).

Integrated Mold-to-Product Solutions

Combining die casting and plastic injection mold capabilities, we produce 500+ precision molds annually for headlight housings and reflectors. Our in-house mold workshop reduces lead times by 30% while maintaining 0.01mm tolerance for complex geometries in aluminum/steel molds.

Automotive-Grade Material Expertise

With 10+ years' experience in engineering plastics, we optimize PC/PMMA formulations for headlight applications - achieving V-0 flame rating, >92% light transmission, and impact resistance up to 20J/cm² while withstanding long-term UV exposure and thermal cycling.

Full-Service Headlight Manufacturing

From optical design to final assembly, we provide complete headlight solutions including LED modules, reflector bowls, and PMMA lenses. Our vertically integrated production covers mold making, injection molding, vacuum metallization, and automated light pattern testing to ensure OEM-quality output.

Related products

Our custom convex lens solutions for vehicles are tailored to meet specific optical and design requirements. We engineer lenses with precisely calculated focal lengths, diameters, and surface profiles to achieve desired light distribution patterns. The custom design process begins with detailed optical modeling using advanced ray-tracing software. We manufacture lenses from optical-grade materials (PC, PMMA) selected based on application requirements. The custom solutions can incorporate unique features including integrated mounting points, special surface textures, or decorative elements. Our manufacturing process maintains tight tolerances (±0.05mm on critical optical surfaces) for consistent performance. We offer various customization options including UV-filtering formulations, impact-modified grades, and colored transparent versions. The lenses undergo comprehensive testing to verify they meet all custom specifications before production. Our quality control includes photometric analysis to ensure optical performance matches design intent. The custom lenses demonstrate excellent durability in automotive environmental conditions. We maintain strict confidentiality throughout the custom design and manufacturing process. Our technical team can advise on optimal material selection and design approaches for specific applications.

Frequently Asked Questions

What types of automotive lighting components does your company specialize in?

We specialize in manufacturing high-performance automotive lighting components including precision convex lenses, reflectors, and complete headlight assemblies. Our products utilize optical-grade PC/PMMA materials with >90% light transmission, meeting ECE/ISO standards for beam pattern accuracy and durability. We offer both halogen and LED solutions with custom optical designs for various vehicle applications.
We primarily use polycarbonate (PC) and polymethyl methacrylate (PMMA) for lenses due to their exceptional optical properties. PC offers superior impact resistance (up to 20J/cm²) and heat resistance (120°C), while PMMA provides 92%+ light transmission with excellent UV stability. Both materials are 50% lighter than glass and can be molded into complex shapes for advanced lighting designs.
Our facility houses complete mold manufacturing capabilities including precision CNC machining, EDM, and wire cutting. We produce 500+ injection molds and die casting molds annually, with tolerances within 0.01mm. Specializing in automotive lighting molds, we work with H13 steel for die casting and pre-hardened steel for injection molds to ensure longevity under high-pressure production conditions.
We implement a rigorous QC process including coordinate measuring machines (CMM) for dimensional checks, spectrometers for material verification, and photometric testing for light distribution analysis. All products undergo environmental testing (-40°C to 120°C thermal cycling, UV exposure, and vibration tests) to ensure compliance with automotive industry standards.
Our reflectors feature precision parabolic surfaces with vacuum-aluminized coatings achieving >90% reflectivity. We combine injection molding and metallization processes to produce lightweight, durable reflectors with optimized light patterns. Advanced simulation software helps design reflectors for maximum luminous efficiency while meeting all regulatory requirements for beam cutoff and distribution.

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customer evaluation

Emily Davis
High transmittance, meets optical standards strictly

We ordered custom convex lenses for our optical instruments. Geqin's products have over 92% transmittance, which perfectly meets our requirements. The surface is smooth without blemishes, ensuring clear imaging. Their team also provided professional advice on focal length selection. Delivery was on time.

Michael Brown
Reliable supplier, consistent quality for bulk orders

As a manufacturer of flashlights, we need a large number of convex lenses. Geqin has been our stable partner for 3 years. Each batch of lenses has consistent thickness and curvature, ensuring stable light output of our products. The PC material they use is impact-resistant, reducing damage during transportation.

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High-precision convex lenses with superior light convergence for diverse optical applications

High-precision convex lenses with superior light convergence for diverse optical applications

Foshan Geqin's convex lenses are crafted with precise curvature and thickness, ensuring exceptional light-converging performance. Made from high-quality PC or PMMA, they offer excellent light transmittance (over 90%) and durability. Available in custom focal lengths, they cater to automotive lighting, optical instruments, and medical magnifiers, meeting strict industry standards for clarity and stability.