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Optics

Selecting the correct machine vision lens is paramount to obtain high quality image for a correct and efficient following processing. Though the result also depends on the camera resolution and pixel size, a lens is in many cases the steppingstone to build a machine vision system, therefore our motto at Opto Engineering® is “OPTICS FIRST”.

Telecentric lenses are employed for demanding machine vision tasks, such as precision measurement, where low distortion is required or when perspective errors must be avoided. Opto Engineering® offers an extensive portfolio of precision telecentric optics to answer all your needs: from standard to high resolution and line scan, from classic designs to compact and flat ones. Moreover, a wide range of magnifications and working distances is available, not to mention all our specialties including telecentric optics with liquid lenses, optical benches, multi-mag lenses and more.

360° view optics by Opto Engineering® are uniquely designed lenses allowing you to reduce the number of components in a vision system. They offer a smart approach to solving machine vision tasks and have become a standard in many industries.

Macro lenses are employed for close range applications where high precision is required, while fixed focal length lenses are general purpose products, suitable for a wide variety of machine vision tasks: Opto Engineering® offers a wide range of macro and fixed focal length lenses to answer all your needs.

  1. Lens options
  2. Introduction to telecentric vision
  3. Bi-telecentric technology
  4. 360° optics tutorial
  5. Coherence artifacts on imaging systems
  6. Introduction to infrared vision
Read more...
Telecentric lenses Outstanding optical performance. Unmatched customer service.
Outstanding optical performance. Unmatched customer service.
Macro & Fixed focal length lenses A wide range of solutions for every machine vision challenge
A wide range of solutions for every machine vision challenge.
360° view lenses The perfect solution for machine-vision inspection challenges.
The perfect solution for machine-vision inspection challenges.
Infrared & UV lenses

Beyond the visible range, for advanced optical applications.

Beyond the visible range, for advanced optical applications.
Custom lenses Original designs specifically tailored on our customers needs
Original designs specifically tailored on our customers needs
Imaging lens selector Find the perfect Opto Engineering® lens for your camera
Custom tools

Basics

The basic purpose of a lens of any kind is to collect the light scattered by an object and recreate an image of the object on a light-sensitive ‘sensor’ (usually CCD or CMOS based). A certain number of parameters must be considered when choosing optics, depending on the area that must be imaged (field of view), the thickness of the object or features of interest (depth of field), the lens to object distance (working distance), the intensity of light, the optics type (telecentric/entocentric/pericentric), etc.

The following list includes the fundamental parameters that must be evaluated in optics

  1. Field of View (FoV): total area that can be viewed by the lens and imaged onto the camera sensor.
  2. Working distance (WD): object to lens distance where the image is at its sharpest focus.
  3. Depth of Field (DoF): maximum range where the object appears to be in acceptable focus. Sensor size: size of the camera sensor’s active area. This can be easily calculated by multiplying the pixel size by the sensor resolution (number of active pixels in the x and y direction).
  4. Magnification: ratio between sensor size and FoV.
  5. Resolution: minimum distance between two points that can still be distinguished as separate points. Resolution is a complex parameter, which depends primarily on the lens and camera resolution.
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