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Home » Keywords » telecentric lenses

Items Tagged with 'telecentric lenses'

ARTICLES

Figure 1: Lenses of different focal lengths and their fields of view on 1/3” and 1/1.8” sensors

Lens Selection Guide, Part 2

Understand the differences between the most common types of lenses used in machine vision.
Nicholas Sischka
December 1, 2018
One Comment

Due to the vast number of imaging lenses that are available on the market, actually choosing a lens for a given application can be a daunting task. Part one of this article covered the most common types of lenses used for machine vision.


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A macro lens inspects a printed circuit board.

Vision & Sensors Lens Selection Guide, Part 1

Understand the differences between the most common types of lenses used in machine vision.
Nicholas Sischka
April 30, 2018
2 Comments

Lenses are a complicated and nuanced component in imaging systems. It is not always straightforward which decisions to make when it comes time to choose a lens and what tradeoffs are made as a direct result of those decisions.


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Figure 1. How the modulation transfer function (MTF) of a lens affects an image, as it is projected onto a sensor. Source: Stemmer Imaging

Choosing a Lens for Machine Vision

Not surprisingly, with the enormous range of sensor formats and resolutions available in machine vision cameras, there are many options for lenses.
Mark Williamson
September 1, 2017
No Comments

All machine vision systems rely on the production of an image of sufficient quality to allow the required measurements to be made.


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edmund_large.jpg

The Advantages of Telecentricity

November 2, 2016
No Comments

The ability to quickly perform repeatable, high accuracy measurements is critical to maximize the performance of many machine vision systems.


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EdmundOptics_900
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Understanding Telecentricity and Perspective Error

October 9, 2015
No Comments

The ability to quickly perform repeatable, high accuracy measurements is critical to maximize performance of many machine vision systems.


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Lenses_FT

Straight and True: Telecentric Lenses for Metrology and Quality Assurance

THE HIGH ACCURACY INHERENT IN TELECENTRIC LENSES IS OFTEN THE MOST COST-EFFECTIVE WAY TO SOLVE A MEASUREMENT PROBLEM.
Nicholas Sischka
September 8, 2015
3 Comments

Precision lenses do an excellent job conveying contrast and color from object to image, but they can do a poor job of transferring accurate dimensions, especially if they have small focal lengths.


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Testing_FT

Eliminate Hidden Errors

Use telecentric optical systems to optimize inspection image accuracy and reproducibility.
Clinton Smith
August 4, 2014
No Comments

When the first multi-lens microscopes were invented in 1590, scientists marveled at their new ability to see small objects and features in the natural world that were previously invisible to the eye and therefore seemingly nonexistent.


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