AICO Resource
How Fisheye Lenses Unlock Unique Perspectives in Machine Vision
Introduction: The Expanding Horizons of Machine Vision Technology In the fast-moving world of machine vision, optical lenses are at the center of making machines perceive surroundings and what comes out of that perception. Fish eye lenses stand out of many types [...]
What Is Image size of A lens
There are several types of imaging sensors with different image size for CCTV cameras, the aspect ratio of CCTV camera are normally 4:3 (H:V) and 16:9 (H:V). The size of camera’s imaging sensor affects the angle of view, with the [...]
About Angle of View, Aperture (F No.)
Angle of View The angle formed by the 2 line from the secondary principal point to the edges or corners of image sensor is called the angle of view. Theoretically, the focal length of a lens is fixed regardless of the image [...]
How Non IR Lens, IR Lens Work
Day & Night cameras are normally used in near-infrared ( NIR ) or infrared ( IR ) at night. If we use a Non IR lens with a day & night camera, the image will be out of focus ( [...]
About M.O.D, CS and C Mount, Depth of Field
M.O.D. The M.O.D. (minimum object distance) is the closest distance from the vertex of the front lens to the nearest object at which an image can be focused. CS and C Mount The CS-mount lens has the flange back distance of [...]
About Megapixel, Megapixel Lens for Megapixel Camera
Megapixel CCD and CMOS image sensors use a series of pixels arranged on a 2 dimensional grid. These pixels convert an optical image to an electronic signal. The number of pixels in an image usually defines the resolution, more pixels means [...]
HOW TO Distinguish Auto Iris，Manual Iris and P-Iris
There are four types of operation for lens iris, that are, (1) DC drive auto iris; (2) Video drive auto iris, (3) Manual iris, (4) P-iris. For DC drive type, the iris is controlled by the circuit inside the camera; For Video drive [...]
What Is The Focal Length of A Camera Lens
Rays from infinite distance objects are condensed internally in the lens at a common point on the optical axis. The point at which the image sensor of the CCTV camera is positioned, is called a focal point. By virtue of [...]