The ADJ EPL166 EP Lens Mini FZ is a compact accessory Fresnel lens designed to modify the light output of compatible small-format LED fixtures, transforming them into versatile tools for stage, studio, and event lighting. This mini Fresnel lens attaches directly to the front of a specific fixture, such as the ADJ EP-1 Mini Profile or similar models, to alter the quality and control of the emitted beam. The primary function of a Fresnel lens is to take the raw, often scattered light from an LED source and collimate it into a more focused, controllable beam with a soft edge. This allows the fixture to produce a smooth, even field of light that can be adjusted from a tight spot to a wider flood by moving the lens closer to or farther from the light source—a feature typically controlled by the fixture's internal motorized or manual focus mechanism.

This accessory enhances the creative utility of a basic LED fixture by enabling classic Fresnel lighting characteristics: the ability to "spot" and "flood" the beam with variable intensity and soft shadows. When set to spot, the lens concentrates the light into a more intense, narrow beam ideal for highlighting specific subjects or creating strong punch. When flooded, it spreads the light into a broader, softer wash suitable for general illumination or blending with other lights. The lens is constructed from high-quality, heat-resistant glass or optical-grade polycarbonate with a stepped Fresnel pattern etched into its surface, which efficiently manages light transmission while minimizing weight and thickness compared to a conventional plano-convex lens of similar focal length.

Designed for easy integration, the lens is a straightforward add-on that expands a fixture's capabilities without requiring complex modifications. It is particularly valuable in theatrical, film, and photography applications where controlled, quality light is essential. By adding this mini Fresnel lens, users can achieve more professional and nuanced lighting effects—such as creating a defined pool of light on a performer, simulating sunlight through a window, or providing a soft, directional key light—from a compact and affordable LED fixture. It represents a cost-effective method to upgrade a fixture's performance, bridging the gap between simple LED pars and more expensive, dedicated Fresnel spotlights.