Silicone Lenses

Overmolding Optical Liquid Silicon Lens


Resistant to microcracks.

Fire resistant, equivalent to UL 94 V-1.

Soft lightweight design can impact resistance.

Low Refractive Ratio 1.41, have less light loss.

Improve the convenience of driving at night.

High temperature resistant, stable even above 150°C.



Specification Of Overmolding Optical Liquid Silicone Lens

Product NameLiquid silicone rubber material for overmolding optical lens in lighting for automobiles
Model NumberHHSL09
MaterialOptical Liquid Silicone, Dow Corning 4002
Hardness70 Shore A
Mold TypeLSR Injection Molding
Mold CavityCustomized
MachineArburg LSR Injection Molding Machine 420C
Machine tonnage: 120T
Surface Polish: A1
Workshop:100K class clean optical production workshop
MOQ1,000pcs/ size
ApplicationAutomotive ADB Headlight
Intercoms: EXW, FOB, CIF, DDP, or deliver to assembly China factories


  • Automobile ADB headlamp

    Automobile ADB headlamp

  • Floor lamp lens

    Floor lamp lens

  • ADB high beam matrix lens

    ADB high beam matrix lens

Product Information

What is overmolding silicone lens

Overmolding silicone lens is the combination of plastic material product and silicone lens. At first, we should produce the plastic product, then put it in silicon lens mold, the final product is overmolding silicone lens.

Overmolding Optical Liquid Silicon Lens

What are the advantages for us to product optical overmolding lens?


1. Mold Design

Hopewell specializes in the production of overmolding silicone lens more than 13 years of experience, our engineer team has more than 20 years of mold design experience, including 5 Japanese engineers. At the same time, we also have professional optical doctor's and master's technical support to provide customers with one-stop silicone formed product solutions, there is no mold design that we cannot complete.

Overmolding Optical Liquid Silicon Lens

2. Machine Equipments

Hopewell has advanced imported mold making equipment, such as, Nano superfinishing machine, High precision CNC machines, High-speed CNC machines, High precision internal and external grinding machines, Precision automatic surface grinding machines, also have Germany Arburg LSR precision injection molding equipment for optical overmolding lens, precision imported processing equipment ensures the feasibility and stability of mould processing.

Overmolding Optical Liquid Silicon Lens

3. The material of LSR overmolding lens

1) United States DOWSIL ™ MS-1002 (74 degrees) / 1003/ 4002 (84 degrees).

2) The LSR7180 series produced by America MOMENTIVE High Tech Materials Co., Ltd., include 5 degrees, 30 degrees, 60 degrees, 70 degrees, 80 degrees and 90 degrees.

3) LUMISIL® LR 7601/ 50 (50 degrees)/ 60 (60 degrees)/ 70 (70 degrees)/ 80 (78 degrees) produced by Germany Wacker Chemical Co., Ltd.

4) DSA-7000 series produced by Guangdong DONESON New Materials Co., Ltd, include 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees.

Overmolding Optical Liquid Silicon Lens

4. Certification

We have many qualification certificate, such as: ISO9001, ISO14001, ISO13485, IATF16949 system certification for overmolding silicone lens.

If you have any questions about overmolding silicone lens, welcome to contact us.

Manufacturing Process

The process of overmolding silicone lens is as follow: 

Liquid Injection Molding- Deflashing- Inspection- Packing- Shipping

Liquid Injection Molding Silicone Optical Lenses


For automobiles silicone lens, to keep the product clean and not deformed while in transportation and in storage, normall, the packaging as follow.

1pc per PE film, 10pcs/ Blister Tray, 20 Trays/ Carton (Quantities will vary due to product sizes are different)

Liquid Injection Molding Silicone Optical Lenses


  • 1

    What’s the advantage to choose liquid silicone to make optical lenses?

    Comparing to Plastic, the properties of light transmittance, anti-yellowing and weathering resistance are better. Comparing to Glass, the optical liquid silicone is easy to shape, the fluidity makes the complex or micro-structure designs moldable.

  • 2

    What’s the level of your clean production workshop?

    Currently, for Liquid Injection Molding, the workshop is Class 100,000, while for plastic, our factory has Class 10,000, or even Class 1,000 clean workshops.

  • 3

    Can you design the optical linear lenses?

    For now, we just do OEM designs. Our team is unable to do the product design.

  • 4

    What should I offer to custom silicone optical lens?

    Pls. offer us 3D drawing and performance requests.

  • 5

    Can I visit your factory?

    Yes, should any interest, highly welcome to visit our factory.

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