Streetlight lens materials and specifications

Release Date:

2021-06-23 14:47

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Streetlight lenses are specifically designed for high-power LED streetlights and can be used in conjunction with high-power LEDs. Materials for Streetlight Lenses 1. Streetlight Lens – Glass Lens 1.1. Due to glass’s excellent heat resistance and high light transmittance, many LED streetlight manufacturers continue to use it.

Streetlight lens Specifically designed for high-power LED streetlights, it can be used in conjunction with high-power LEDs.

Streetlight lens material

1. Streetlight lens – glass lens

1.1. Due to the high-temperature resistance and high transmittance of glass materials, many LED streetlight manufacturers continue to use them.

1.2. However, due to its heavy weight, fragility, and high cost, the use of glass is somewhat limited.

2. Streetlight Lens: Polycarbonate or Polymethyl Methacrylate

2.1. These two materials are optical plastics that can be injection-molded, facilitating the realization of aspheric focusing and reducing the yellow halo effect in the light spot.

2.2. However, the light‑emitting‑diode lens made of PC and PMMA has a transmittance second only to glass, but its temperature resistance is inferior to that of glass.

2.3. Meanwhile, PC and PMMA streetlight lenses offer clear advantages in terms of material and production costs;

II. Specifications of Streetlight Lenses

1. Streetlight lens angle specifications

1.1. Because different roads have varying optical requirements—such as streetlight height, spacing between poles, and road type (e.g., arterial roads, collector roads, side streets, residential neighborhoods, etc.)—the angle specifications for streetlight lenses also differ accordingly.

1.2. Generally, streetlight lenses—streetlight reflectors—come in beam angles of 60°, 80°, 100°, and 120°.

1.3. On typical arterial roads, streetlight poles are 10–12 m tall, with a spacing of 30–35 m between poles; accordingly, the required beam angle for the streetlight lenses is 100–120 degrees.

2. Streetlight lens Spot specifications

2.1. Circular light spots are generally suitable for roads in residential courtyards and communities, where the requirements for illumination range and illuminance are not particularly stringent.

2.2. Elliptical light spots (such as those produced by the Renda Optoelectronics road‑light lens model ST‑V20H‑LT2060) are typically used in motorized and non‑motorized vehicle lanes, effectively illuminating the shadowed areas on both sides where the circular beams intersect. Along the entire roadway, the light distribution is uneven, and some of the light from the circular beam extends beyond the pavement, resulting in underutilization.

2.3. Motor vehicle lanes shall use rectangular light spots (e.g., the Danyang Lingemei DG-ST107), making efficient use of LED lighting and ensuring uniform beam concentration distributed evenly across the road surface.

2.4. Street‑light lenses have specific requirements regarding luminous efficacy, beam‑angle concentration, and spot‑uniformity. Whether the illuminance levels on roads meet the required standards is a key consideration for street‑light manufacturers during the design phase—such as selecting appropriate power ratings, choosing LEDs from different brands, and opting for LEDs with varying lumen outputs.

3. Streetlight Lens – Optical Specifications

3.1. Streetlight Lens – Single Lens

3.1.1. Combining multiple individual streetlight lenses (one-to-one lens and LED) offers the advantage of flexible application;

3.1.2. For example: use as many LED lenses as you need, and arrange them however you like;

3.2. Streetlight lens Module(s)

3.2.1. To make efficient use of the luminaire’s available space and reduce its structural dimensions and weight, a significant number of manufacturers have first introduced street‑light lens modules, 28 of which adopt a 4×7 configuration.

3.2.2. The streetlight lens module can also be integrated to achieve a waterproof structure for the luminaire.


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