Focal Length of Optical Systems: Definition and Test Methods

Focal length is a critical parameter of an optical system. Most readers have some basic understanding of this concept, which we wi...

2026-09-10

Depth of Field

Depth of field (DOF) refers to the range of object distances measured along the imaging axis in front of a camera lens or other im...

2026-09-10

Tower‑crane Monitoring System Installation for Safer Tower‑crane Operations

Tower cranes are widely used on many construction sites. Tower‑crane operation is high‑altitude hazardous work. Accidents such a...

2026-09-10

How to Complete the Installation and Commissioning of Network Cameras

In recent years, as a vital component of security prevention, network cameras have gradually become indispensable installation equ...

2026-09-10

How to perform flat-field correction for line scan cameras in machine vision

How to perform flat-field correction for line scan cameras in machine vision

2026-09-09

What Is Image Noise?

Wikipedia\'s definition: Image noise is a random variation of brightness or color information in images (which is not present in t...

2026-09-09

Lens Magnification

One of the performance parameters of an optical lens, optical magnification refers to the ratio of the image size formed by an obj...

2026-09-09

What Industries Use Infrared Thermal Imaging Cameras?

As is well known, infrared thermal imaging cameras have an extremely wide detection range — any object that emits heat can be mon...

2026-09-09