Machine Vision Camera Lens
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A machine vision camera is a camera used to inspect, measure or guide a process, and its lens must give a picture that supports a decision, not merely a picture that looks good. This guide explains what a machine vision camera needs from a lens, in plain language, for buyers who are new to machine vision.
The guide draws on the machine vision application page and on the C Mount industrial and low distortion categories on this site. It states no model or specification, and it does not recommend a lens for any particular job.
What a machine vision camera needs
A machine vision camera needs a picture that answers a question reliably, every time. The question may be about shape, size, position, surface, colour or presence, and the lens must serve that question rather than a general idea of picture quality. A picture that looks fine to a person may still be wrong for measurement, if its geometry is distorted or its detail is in the wrong place.
Repeatability matters as much as sharpness. A machine vision setup is repeated many times, often automatically, so the lens and lighting must give the same picture on every repetition. A lens that gives a good picture once but a different picture next time has failed the machine vision test, however good the single picture looked.
How the lens choice is made
The choice starts with the object and the decision: what is being looked at, how big it is in the picture, how it is lit, how fast it moves, and what counts as pass or fail. Those answers decide the lens far more than the camera brand or the general category, and an inquiry that omits them cannot be answered properly.
Distortion deserves special attention in machine vision, because measurement reads the geometry of the image as data. Where shape or measurement matters, the low distortion category on this site should be read alongside this guide, and the distortion behaviour of the exact lens offered should be confirmed.
What to confirm before ordering
Confirm the lens category and, where one is offered, the model that fits the buyer's machine vision camera and job. Confirm the specifications, minimum order quantity, lead time and price for the quantity required, and confirm compatibility with the camera and mounting arrangement, in writing, before ordering.
Documents should be confirmed at the same time. Certificates available upon request. No certificate detail is stated on this site.
Frequently asked questions
Is a machine vision camera lens a special product?
On this site it is an application description, not a separate model range. It describes lenses used for inspection, measurement and guidance jobs.
What matters most in machine vision?
That the picture answers the job's question reliably, every time. Repeatability matters as much as sharpness.
Do I need a low distortion lens for machine vision?
It depends on the job. Where shape or measurement matters, read the low distortion page and ask whether the property is needed.
Related pages
Questions to confirm before ordering
Model numbers, specifications, minimum order quantities, lead times and prices are not published on this site. Before payment, confirm each item below in writing for the exact lens and quantity you need.
- Confirm the exact lens category and the camera or system it will be used with.
- Confirm the model number that applies, if one is offered for your requirement.
- Confirm the specifications that matter for your application, in writing, before ordering.
- Confirm the minimum order quantity, the lead time and the price for your quantity.
- Confirm which documents are supplied with the order. Certificates available upon request.
- Confirm compatibility with your camera and mounting arrangement before ordering.
Send your inquiry to [email protected] (Contact: Melody Zheng, 0086-571-86619019, 0086-13819196867, [email protected]).