Typically, Fresnel lenses are cut from spherical surface shapes to minimize image optical aberrations during imaging. The lens is better able to calibrate the ideal point source into a parallel source.
In real life, no light source is a true point source, but solid state illuminators such as LEDs are very small, so as long as the distance between the lens and the LED is appropriate, it can be used as a point source.
Therefore, the lens produced by Yuying can calibrate the LED output light into parallel light, while the traditional incandescent light source generates a large amount of radiant heat, which limits the application of the plastic optical material very close to the light source.
Since most of the heat generated by the LED is conductive, it is easier to apply a plastic optical lens. When it is necessary to calibrate the beam source of the LED illuminator to a wider range of angles,
The most common practice is to use a mirror combined with a Fresnel lens to reduce the amount of optics used. The lens is used for LED light distribution, which can increase the light efficiency and improve the brightness.
Compared with the same lens and LED lamp, different focal lengths and different distances, the light angle can be set arbitrarily. Single lamp or multiple array LED lights can be designed according to requirements. It has been widely used in LED floodlights, colorful floodlights, lighting, landscape lights, signal lights, and various lamps.
The lens features produced by Yuying:
1. Using high-precision original mold, the product has high precision and good quality.
2, the product has an ultra-thin structure, large size, ultra-light weight.
3. The shape of the product can be cut freely to meet the nuances of different products of different customers.
to sum up:
Compared with traditional lenses, Fresnel lens has the advantages of large area, light weight, low price, light and easy to carry, etc. It is a widely used optical component, and its design and manufacture involve many technical fields.
Including optical engineering, polymer materials engineering, CNC machining, diamond turning process, nickel plating process; molding, injection molding, casting and other manufacturing processes. Therefore, the design, development and production of large-scale, high-precision Fresnel lenses have become the main direction of technological development at home and abroad.
In addition to the concentrating light with a lens, there is a characteristic that the light source is distributed very evenly, and the light is not strong in some places, and the light is weak in some places. The light of a car without a lens is scattered, and the light source is not well controlled.