Fresnel lens

Application areas:

Projection display: Fresnel lens has a wide range of applications in the field of projection display. It is proved to be the best application is in the projection system, its role is to collimate light and focus light. The Fresnel lens adjusts the beam source emitted by the light source into parallel light, significantly improves the brightness around the display panel, eliminates the sun spot effect, and improves the overall display brightness uniformity. Often Fresnel lenses are used with other display elements, such as cylindrical lenses.

Solar applications: Fresnel lenses also have important applications in the field of solar energy. As one of the important optical components in the concentrating solar energy system (CPV), it can convert the light from a relatively large area to a relatively small area, and improve the efficiency of energy utilization. In the field of solar concentrating, the function of the Fresnel lens is to focus the light on the solar chip. When the lens surface faces the sun vertically, the light will be focused on the battery chip, which gathers more energy, thus requiring a smaller area of the battery chip and greatly saving the cost.

Scientific research system: Fresnel lens is often used in scientific research system, and the angle between the lens and the horizontal plane is 45 ° ± 5 °. If two rays of the same wavelength pass through the lens in parallel, they can focus on the spot with a diameter of 2mm; it can also be used for visual system simulation and simulation.

Nautical lighting: Fresnel lenses also have certain applications in the field of marine lighting.

Features:

Small size, light weight, compact structure: Due to the excellent physical and chemical properties of the material, the Fresnel lens has the advantages of small size, light weight and compact structure.

Good focusing and imaging performance: Fresnel lens has good focusing and imaging performance not inferior to other lenses, so it is widely used in various fields such as national defense, aviation, space, industrial production and civil use.

High energy concentration: Fresnel lens can focus sunlight on the receiving surface (high-performance battery) with 1/10 to 1/1000 or even smaller incident surface, which is more than 30% higher than the power generation efficiency of traditional flat panel photovoltaic (FPV), and meets the high energy and high temperature requirements of solar concentrating power generation (CPV) and thermal concentrating system (TPV).

High temperature resistance and chemical stability: The material has high temperature resistance and chemical stability, so that the Fresnel lens can work stably in high temperature and chemical environment.

Convenient processing and manufacturing: The manufacturing process of Fresnel lens is relatively mature, which can meet the needs of large-scale production and application.

Wide range of applications: Fresnel lenses are widely used in projection displays, solar applications, scientific research systems, marine lighting and other fields.

In summary, Fresnel lens has been widely used in many fields because of its unique structure and excellent optical performance. It has the characteristics of small size, light weight, compact structure, good focusing and imaging performance, and high energy concentration, which makes Fresnel lens widely used in the fields of optical instruments, lighting and photography.