A Fresnel lens consists of a succession of concentric rings, each forming an element of a simple lens assembled on a flat surface to provide a short focal length. This lens is particularly used in lighthouses and searchlights to concentrate light into a relatively narrow beam.
Fresnel lenses consist of a series of concentric grooves etched into plastic. Their thin, lightweight construction, availability in small and large sizes, and excellent light gathering ability make them useful in various applications. Fresnel lenses are most often used in light gathering applications such as condenser systems or emitter/detector setups, and can also serve as magnifiers or projection lenses in illumination systems and image formulation.
A Fresnel (pronounced fray-NEL) lens replaces the curved surface of a conventional optical lens with concentric grooves. These contours act as individual refracting surfaces, bending parallel light rays to a common focal length. As a result, a Fresnel lens, while physically narrow in profile, can focus light similar to a conventional optical lens but offers several advantages over its thicker counterpart.
| Parameter | Specification |
|---|---|
| Product Name | Custom Fresnel Lens For LED Photometric Or LED Flashlight |
| Material | Optical-grade PMMA / Polycarbonate |
| Diameter | 20 mm - 200 mm (customizable) |
| Focal Length | 10 mm - 150 mm (customizable) |
| Groove Depth | Optimized per design requirement |
| Groove Pitch | Custom per beam angle |
| Transmission | >92% typical |
| Operating Temperature | -40°C to +85°C |
| Surface Finish | Smooth optical grade |
| Application | LED flashlights, LED photometric systems, spotlights |
| Coating Options | Anti-reflective coating (optional) |
A: The Custom Fresnel Lens For LED Photometric Or LED Flashlight is specifically engineered with concentric grooves to focus and shape LED light efficiently while remaining lightweight and compact, unlike conventional bulky lenses.
A: Yes, the Custom Fresnel Lens For LED Photometric Or LED Flashlight can be designed to match different LED sizes, optical powers, and beam angle requirements, providing narrow, wide, or asymmetric lighting patterns.
A: High-quality optical-grade PMMA or polycarbonate is used to ensure excellent light transmission, impact resistance, and long-term durability.
A: Yes, with appropriate material selection, the Custom Fresnel Lens For LED Photometric Or LED Flashlight can operate reliably in temperatures ranging from -40°C to +85°C.
A: By precisely controlling light dispersion and beam shape, the Custom Fresnel Lens For LED Photometric Or LED Flashlight maximizes luminous efficiency, reduces glare, and produces a uniform and well-defined beam.
Shanghai Advance Optical-Electronics Technology Co., Ltd is a manufacturing enterprise of science and technology. Founded in 2009 and located at QingPu Industry Park (about half an hour drive from Hongqiao International Airport), we have gathered many excellent technicians from the optical industry. We possess comprehensive capabilities in optical design, optical manufacturing, and sales service, and are committed to providing high-quality products and the best service to every client.
We specialize in optical design, optical element processing, and lenses assembly, including spherical lenses, aspherical lenses, cylindrical lenses, reflector mirrors, filters, rod lenses, camera lenses, etc. Our products are widely used in imaging, laser, and lighting applications.