LSR silicone lenses are made from optical-grade Liquid Silicone Rubber (LSR) using Liquid Injection Molding (LIM). LSR offers excellent optical clarity, color stability, UV resistance, and temperature resistance, making it ideal for outdoor lighting, automotive lighting, and precision electronic applications.
Its excellent flowability also enables the molding of thin walls, complex geometries, and micro-optical structures, providing greater flexibility for customized optical designs.
In this part, YEJIA Silicone answers three key questions:
· What are the dimensional limits of LSR silicone lenses?
· What are the key requirements for manufacturing LSR silicone lenses?
· Why choose YEJIA Silicone as your LSR silicone lens supplier?
YEJIA's Technical Perspective
LSR offers excellent flowability and molding performance, allowing silicone lenses to achieve both thin-wall and complex optical designs.
For suitable designs, the minimum wall thickness can be controlled to below 0.05 mm, while the maximum product size mainly depends on the molding equipment and mold structure. With appropriate equipment, YEJIA Silicone can manufacture optical silicone components up to approximately 500 mm.
The actual dimensional limits depend on several factors:
Material Flowability: High-flow LSR enables thin walls and fine microstructures.
Mold Precision & Venting: Precision mold machining, surface finishing, and proper venting are critical to optical quality and dimensional accuracy.
Molding Equipment: Injection volume, clamping force, pressure, and temperature control determine the achievable product size.
Optical Structure: Micro-lens arrays, TIR structures, and freeform surfaces require advanced mold and process control.
Shrinkage & Curing: Precise control of molding temperature and curing time helps maintain dimensional stability.
High-quality LSR silicone lenses require the combination of optical-grade materials, precision molds, advanced molding equipment, and strict process control.
Optical-Grade LSR: High optical transmission, clarity, and yellowing resistance.
Precision Optical Molds: High surface quality, dimensional accuracy, and optimized venting.
Process Control: Precise control of material mixing, degassing, injection pressure, mold temperature, and curing time.
Microstructure Accuracy: Effective control of shrinkage and deformation to maintain the designed optical geometry.
Clean Manufacturing: Production and packaging can be carried out in a Class 100,000 cleanroom for applications requiring high cleanliness.
Depending on application requirements, LSR silicone lenses can be tested for:
· Light Transmittance
· Haze
· Refractive Index
· Dimensional Accuracy
· Surface Quality
· Temperature & Yellowing Resistance
· Hardness & Physical Properties
· Humidity and Chemical Resistance
These inspections help ensure consistent optical performance, dimensional accuracy, and product reliability.
A reliable LSR optical lens manufacturer should have:
Product & Mold Design Capabilities
Mature LSR Injection Molding Processes
Experienced Engineering & Quality Teams
YEJIA integrates these capabilities to support stable production of high-precision optical silicone components.
For precision optical components, selecting the right supplier is critical to product quality and production stability.
Key Advantages of YEJIA：
Extensive Optical Experience
Experience in developing and manufacturing LSR silicone lenses and complex micro-optical components.
Strict Material & Process Control
Careful control of mixing, degassing, injection molding, curing, and inspection processes.
Comprehensive Quality Management
Control of optical performance, dimensions, microstructures, and surface quality.
Customization Capability
Support for customized dimensions, geometries, optical structures, and material requirements.
Industry Experience
Serving applications in automotive lighting, LED lighting, consumer electronics, and other precision industries.
One-Stop Manufacturing Support
From product development and mold design to prototyping, mass production, inspection, and technical support.
YEJIA focuses on silicone material technology and advanced optical applications. With experienced engineers, precision mold-making capabilities, advanced inspection equipment, and mature LSR injection molding technology, we provide reliable solutions for custom optical silicone components.
Whether you need LSR silicone lenses, optical silicone lenses, TIR lenses, micro-optical components, or other custom silicone optics, YEJIA Silicone can support your project from design evaluation to mass production.
Contact YEJIA to discuss your custom LSR silicone lens project.
