Learn more about machine vision! In our knowledge base we are explaining key technical terms about image processing. We give you an overview to topics like 3D machine vision or the established standards like CameraLink, GigE Vision or GenICam.
Filters can dramatically alter the character of the light that enters a lens
and they can have a wide variety of uses, from simple protection of the lens
surface to restricting certain wavelengths of light and polarising etc.
Fixed focus lenses, Zoom lenses, Lenses for multi-chip cameras, Standard resolution lenses, High resolution lenses, Large format lenses, Liquid lenses
Standard lenses that focus to infinity are very good when inspecting
large components, but when objects are comparable in size to that of
the imaging sensor, macro lenses are the best choice. Macro lenses are
not specified in terms of their focal length, but are named according to
the magnification. These lenses generally have a fixed working distance
and a fixed iris and are optimised for magnification with distortion
being kept to a minimum.
The quality of illumination can vary depending on the object material and how
structured the light is. Different illuminators are available delivering light
ranging from structured to diffuse. Mirrors or lenses can be used to focus the
light in one direction or scatter the light such that it reaches the object
from all directions (diffuse).
Line scan bars (aka contact image sensors - CIS) are an attractive alternative to common line scan cameras. They’re much easier and faster to set up, offer high sensitivity and extremely fast data rates.
This page covers how the technology works with some examples of applications it’s well suited to.
To inspect sheet steel, paper web or other uncut materials for errors at
extremely high speed during their manufacture, line-scan based image
processing systems are often the only technically and economically viable
solution. This article describes the current state-of-the-art line-scan
LINLOG technology allows the characteristic pixel response to be adapted to
the illumination conditions. Every pixel can be programmed on a purely
logarithmic, purely linear or any combination of these two curves, a LINLOG