Zoom Lenses for Precision Imaging
Zoom Lenses for Precision Imaging
Both varifocal and zoom lenses are equipped with movable elements that allow for the adjustment of focal length. These types of lenses offer a versatile solution for applications that previously required the use of multiple fixed focal length lenses to achieve the desired field of view at a specific working distance. For instance, a lens may be specified with a range like 2.8–12mm or 5–50mm, indicating that the focal length can be varied within these specified intervals. Varifocal and optical zoom lenses are used in various fields, including inspection, machine vision, robotics, and more.
With varifocal and optical zoom lenses, users have the flexibility to choose an effective focal length within the given range, such as 6–60mm. When using a varifocal lens, it’s important to note that refocusing is necessary whenever the focal length is adjusted. In contrast, a zoom lens maintains focus even while adjusting the focal length. The varifocal lens is an economical and compact option, which makes it a cost-effective choice compared to a zoom lens.
Applications for Zoom Lenses in Precision Imaging
- Inspection systems
- Machine Vision
- Robotics
- Medical Imaging
- Surveillance and Security