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Characteristics of street light lenses

Time: 2024-06-19    Author: 衡正光学    Source: 本站    Views: 3

High-power LED street light lens, features: with high-power LED use.

A street lamp lens material

1. Glass lens

Because the glass material has high temperature resistance, penetration rate and other characteristics, there is still a relatively large part of the LED street lamp factory in the use of it; but the glass because of the quality of heavy, fragile, high cost and other shortcomings, so that the scope of its use has certain limitations;

2. PC or PMMA material: these two materials belong to the same optical plastic class, can be completed through the injection molding product molding, easy to achieve aspheric convergence, reduce the spot of the halo spot phenomenon; but the penetration rate of PC and PMMA is second only to glass, temperature resistance is not as good as the lack of shortcomings of the glass material; but the PC and PMMA on the material and production cost is a significant advantage.

Second, the specifications of the street lamp lens

1. Angle specifications: Because different roads have different optical needs, such as: street lamp height, the distance between street lamp poles, the type of road (trunk road, trunk road, branch road, courtyard district, etc.), so the angle of the street lamp lens requirements are not the same; in general, the street lamp lens spotlight angle specifications for: 60 degrees, 80 degrees, 100 degrees, 120 degrees of a few kinds of; the general height of the main road street lamp poles 10-12M, the street lamp poles are 10-12M, the street lamp poles are close to each other, so the street lamp lens has the same angle. -12M, street light poles are 30-35M apart, which is deduced from the street light lens angle demand for 100-120 degrees.

2. Spot specifications: round spot, generally used in courtyard community roads; irradiation range and illumination requirements are not very high; oval spot (such as Renta photoelectric street lamp lens model ST-V20H-LT2060) is generally used in motor vehicles or non-motorized road, effectively eliminating the circular spot irradiation, round and round on both sides of the place will have a dark area, the whole road, the light is not well distributed or part of the circular spot, the light is not very good. Uniform distribution or a part of the round spot light beyond the road surface and not really utilized; Rectangular spot, (such as Danyang LINGHEMEI DG-ST107) applied to the motorway, the effective use of LED light, the light is evenly distributed in the road after the light spot, light spot uniformity; street lamp lens is relatively speaking the requirements of the light interest rate and the angle of the spotlight and the uniformity of the spot, for the road surface. Illumination value is up to standard, this is the street light manufacturers need to design considerations (such as power size, different brands of LED selection, different LM value of LED selection, etc.).

3. Lens specifications:

(1) a single lens to a number of individual street lamp lens combination (lens and LED one-to-one), the advantage of this kind of use of its flexibility; for example: how many LEDs you want to select the use of more small LED lenses, how you want to arrange (lay out) on how to arrange;

(2) street lamp lens module (multi-head): in order to effectively utilize the space of the lamps and lanterns, reduce the size and weight of the structure of the lamps and lanterns, a considerable part of the current manufacturers are the first street lamp lens module, which in turn to the structure of the 4 * 7 28 head; street lamp lens module can also be used with the realization of the waterproof structure of the lamps and lanterns.

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