Industrial projection lens

What Is A Projection Lens?

A projection lens is the part of a projector that magnifies an image and casts it onto a screen. These lenses typically feature multiple lens elements and come in two main types: zoom and fixed focus. Zoom projection lenses have multiple focal lengths, which means they can project a clear image onto screens at a range of distances. Fixed focus lenses, in comparison, can focus images at a single fixed distance. Projection lenses also come in different resolutions and depths of field for different projection applications.

Because the purpose of a projection lens is to project images for viewing, lens manufacturers and engineers emphasize image quality strenuously. To correct certain visual distortions and aberrations, your projection lens may include a number of different design features. For example, an aspherical lens may be used to correct spherical aberration, any defect that causes different parts of an image to focus at different distances. Projection lenses offer the following benefits:

• Perfect or high resolution
• Tight color registration
• Low distortion
• High brightness and focus uniformity
• Custom modification