Application of Fresnel lens in projection system

The Fresnel lens is proven to be the first choice in the projection system, its role is to collimate and focus the light. The Fresnel lens tunes the light source retracted by the light source into parallel light, which obviously improves the brightness of the display panel and eliminates the hot spot effect, thereby improving the uniformity of the overall display brightness. Fresnel lenses are generally used together with other display components (such as cylindrical lenses).

The advantage of the Fresnel lens used in the projection system

is that after focusing or adjusting the light collimation to increase the brightness, if the collimator lens is eliminated, the light will be lost a lot when passing through the panel, and obvious hot spot effects will appear in the display. To increase the brightness around the display screen. Similarly, on the other side of the LCD screen, we must also gather light from the panel into the projection lens.