This optical transparent LSR infrared lens is manufactured by Xiangchu Rubber, made of high-transparency liquid silicone rubber. It features stable light transmittance and good temperature resistance. We support customization for different infrared device specifications, with ISO 9001 certified reliable quality.
Material
Optical-grade LSR
Hardness
Shore A 30-50
Temperature
Certifications
Applications
-40°C ~ +150°C
Colors
Transparent, Customizable
# Optical Transparent LSR Infrared Lens
*Manufactured by 橡楚（湖北）橡胶有限公司*
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Optical Transparent Liquid Silicone Rubber (LSR) Infrared Lenses are high-precision molded optical components designed specifically for infrared (IR) spectrum applications. Engineered by 橡楚（湖北）橡胶有限公司 at our production facility in 湖北省鄂州市鄂城区经济开发区凡口街道内河巷54号, these lenses leverage the unique material properties of low-fluorescence, high-clarity liquid silicone rubber to deliver consistent infrared transmittance across common working IR bands.
Unlike traditional glass or rigid polymer infrared lenses, our LSR infrared lenses combine excellent optical performance with the intrinsic flexibility and impact resistance of silicone rubber. This makes them ideal for compact, rugged optical systems that require lightweight, shatter-resistant components without sacrificing infrared transmission accuracy. Each lens is produced under controlled cleanroom molding conditions to minimize surface defects and internal inhomogeneity that can degrade IR signal quality. Our core selling points are consistent spectral transmittance, customizable design for specialized IR systems, durable mechanical performance, and cost-competitive mass production for both prototyping and high-volume orders.
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Our optical transparent LSR is formulated specifically for infrared optical applications, with tailored purity to avoid unwanted additives that absorb or scatter IR radiation. Key material properties are listed below:
Finished optical transparent LSR infrared lenses meet the following performance benchmarks:
For standard molded LSR infrared lenses, our production follows these controlled parameters to ensure consistent quality:
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Our LSR formulation is stripped of unnecessary fillers and additives that commonly cause IR absorption in general-purpose silicones. Unlike many off-the-shelf silicone optical components that exhibit variable transmittance across the 8-14 μm thermal IR band (the most common band for consumer and industrial infrared applications), our optical-grade LSR maintains stable transmittance with minimal signal loss, ensuring accurate detection and imaging performance.
At only 1/4 the density of common infrared optical glass (e.g., germanium, zinc selenide), our LSR infrared lenses reduce overall system weight, making them ideal for portable handheld devices and drone-borne infrared systems. The intrinsic flexibility of silicone also makes the lenses fully shatter-resistant, eliminating the safety risks and failure points associated with brittle glass IR lenses in rugged operating environments.
Liquid silicone rubber supports precision injection molding of complex aspheric, freeform, and customized lens geometries that are difficult or costly to produce with traditional infrared glass. We can produce lenses with integrated mounting flanges or curved profiles to match specific optical system designs, reducing post-processing assembly steps and overall system cost for our customers.
Silicone rubber inherently resists UV degradation, moisture ingress, and temperature fluctuation. Our LSR infrared lenses maintain consistent optical and mechanical performance across a wide -40°C to +200°C operating range, making them suitable for both outdoor industrial monitoring and automotive under-hood applications where temperature extremes are common. They also meet basic water and dust resistance requirements for sealed optical systems.
Compared to traditional crystalline infrared optical materials such as germanium or sapphire, our optical LSR offers a much lower raw material and production cost, with comparable optical performance for many non-extreme precision applications. Our LIM production line at 橡楚（湖北）橡胶有限公司 supports efficient mass production, reducing per-unit cost for high-volume orders while maintaining tight dimensional and optical tolerances.
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Optical Transparent LSR Infrared Lenses are suitable for a wide range of commercial and industrial infrared applications, including:
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Choose the appropriate Shore A hardness based on your application requirements:
We currently support standard lens diameters from 5 mm to 150 mm, with custom thickness from 1 mm to 20 mm. For custom sizes outside this range, please contact our technical team to discuss feasibility. All dimensional tolerances are controlled per the process parameters outlined in the technical specifications section.
We offer two material grades for different application requirements:
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At 橡楚（湖北）橡胶有限公司, all our optical transparent LSR infrared lenses are produced under a quality management system certified to ISO 9001. Every production batch undergoes incoming material inspection for LSR purity, in-process inspection for dimensional accuracy, and final outgoing inspection for infrared transmittance and surface quality to ensure compliance with our technical specifications.
We maintain full production traceability for all batches, and our technical team is available to support custom testing requirements for specific customer projects.
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Contact Us
橡楚（湖北）橡胶有限公司
Address: 湖北省鄂州市鄂城区经济开发区凡口街道内河巷54号
Phone: +86 18071171144
Email: churubber@163.com
