Zoom Lenses

Optical Characteristics

• High Resolution and Low Distortion
• Day/Night Options
• C- and CS-Mount Versions
• Focal Length from 2.8mm – 90mm

Both varifocal lenses, zoom lenses, and camera lenses are built with movable elements for adjusting the focal length. These lenses provide a flexible solution to applications that previously would have required multiple fixed focal length lenses for getting the desired field of view at a specific working distance. A lens might be specified as 2.8 -12mm or 5 – 50mm, meaning the focal length can be adjusted within these ranges. These lenses are used for many applications including inspection, machine vision, robotics, etc.

Using varifocal lenses, zoom lenses, and camera lenses, users can select the effective focal length within the specified range (for example 6 – 60mm). A varifocal lens will need to be refocused whenever the focal length is adjusted; the zoom lens will stay in focus when the focal length is adjusted. The varifocal is an economical and compact lens that is more cost-efficient to produce than a zoom lens.

• Wide Angle Zoom: Some zoom lenses offer wide-angle capabilities, providing a broader field of view. This is particularly beneficial in surveillance, landscape photography, and applications where capturing a wide scene is essential.
• Zoom Range: The zoom range, indicated by specifications such as 2.8 -12mm or 5 – 50mm, defines the flexibility of the lens in adjusting the focal length. This versatility allows for a wide range of applications, from close-up inspections to broader scene captures.
• Quality Lens: Shanghai Optics Inc. ensures that each zoom and varifocal lens is a quality lens, crafted with precision and durability. These lenses are built to withstand various environmental conditions while maintaining high performance.
  Image Quality: These lenses are designed to deliver superior image quality, ensuring sharp, clear, and detailed images across the entire zoom range. High-resolution and low-distortion characteristics further enhance the overall image fidelity, which is critical for precision applications.

Shanghai Optics offers an extensive selection of varifocal lenses, zoom lenses, and camera lenses, available in both manual and motor-controlled versions. Motorized Zoom/Focusing Lenses, equipped with electric motors and controllers, can be seamlessly integrated into existing systems. Customers can select specific motors to facilitate basic operations such as zoom and focus adjustments.

Lens Layout:

MTF Chart:

Digital Projection Zoom Lens: