The led lens is closely related to the LED, which can improve the use efficiency and luminous efficiency of light, and can be used according to the effect. Specifications are penetrating, refraction and so on. Let's take a look at the design points and design principles of LED lenses.

1. Design points of led lens

The side wall of the led lens is designed with a free-form surface, and has a composite eyeball design with a light-emitting angle of 250-600. It is generally made of PC material and can be used for COB light source spotlights with a light-emitting surface diameter of 14mm. The optical effective transmittance can reach about 94%.

The other group of led lens adopts the outer straight surface scale shell, and the center of the light-emitting surface is compound eye. The lens adopts an external free-form surface and has a compound eye design with a low-beam surface and a light-emitting surface.

The led lens is generally made of PC material, which is resistant to high temperature. The light source can be a SMD light source or a COB light source. The light output angle is adjustable from 300 to 600 degrees, and the light output is uniform. The compound eyeball surface can be used to disperse the modular patch light source outside, so that the visual effect is COB-like and expands the selectivity of the light source.

Second, the design principle of led lens

1. First of all, look at the light source. Its chip structure, packaging method, light characteristics, etc. will be different, resulting in differences when the same lens is matched with LEDs of different specifications and brands; therefore, targeted development (oriented by mainstream brands) is required.

2. Use optical design software to design and simulate optical running light to obtain the corresponding optical aspheric surface.

3. The led lens itself is a precision optical accessory, so it has very high requirements on the precision of the mold, especially the processing accuracy of the curved surface of the led lens reaches 0.1μm, and the eccentricity is within 3μm. For such high-precision molds, the following equipment must generally be provided: ultra-precision machining machinery, etc.

4. The optical mold core is a relatively precise part in the mold. First, the special mold core steel is selected to complete the initial embryo, and the aspherical surface is processed by an ultra-precision machining machine after nickel plating.