Machine Vision Zoom Lenses
A machine vision zoom lens is a lens whose magnification can be adjusted, which buyers consider when one setup must handle objects of different sizes or when the working distance may change. Adjustability is convenient, but it also raises questions about repeatability and calibration for measurement tasks. This page covers those general trade-offs. It does not state a zoom range, magnification or working distance for any lens.
What this category covers
This category covers lenses used in machine vision and inspection setups. A lens in this context is chosen for the image it produces for measurement or inspection, not for photographic appearance. The relevant questions are practical: how large the object is, how far the lens can sit from it, what must be measured or detected, and which camera the lens must fit. A category page can explain those questions, but it cannot choose a lens for an unseen setup, which is why the inquiry matters more than the category label.
Where buyers use this kind of lens
Buyers consider lenses in this category when building a new vision setup, replacing a lens on an existing setup, or adapting a setup to a new object size. Measurement tasks are the most demanding use, because the image must support a number rather than only a visual impression. Inspection tasks are also common, where the lens must make a defect, edge or mark clearly visible to the camera. In both cases the object and the working distance decide the shortlist, not the category name alone.
What to describe in your inquiry
A strong lens inquiry names the camera and its mount, the object size and the smallest feature that must be resolved, the working distance available, and whether the task is measurement, inspection or both. It also states how the images will be used and whether the setup must handle more than one object size. With those answers, a supplier can confirm in writing whether a proposed lens fits, instead of the buyer guessing from a category description.
Putting this page to use
Use this page as a worksheet, not as a catalogue entry. Write down the task in your own words, add the constraints that apply to your installation, and mark the items that must be confirmed in writing. That worksheet travels with the inquiry and makes it possible to compare replies fairly, because every supplier is asked about the same task and the same confirmation items. If a reply does not address an item on the worksheet, ask about that item again, specifically, before treating the reply as complete. A short, specific second question usually resolves more than a long exchange about general capabilities, and it leaves a clearer record for the order file.
About the company behind this site
Hangzhou Contrastech Co., Ltd. lists industrial cameras, industrial lenses and machine vision lighting on its company website (contrastech.com). The marketplace listing for the same company name carries a TÜV Rheinland Verified mark. For any other certification, the standing statement on this site is: Certificates available upon request. No certificate number or issuing detail is stated here.
Contact person: Camellia Qian. Telephone: +86 571-89712238. Email: [email protected], [email protected].
Contact and inquiry
To discuss any category on this site, contact Hangzhou Contrastech Co., Ltd.. The contact person shown on both the company website and the marketplace listing is Camellia Qian. Telephone: +86 571-89712238. Email: [email protected], [email protected]. In your message, name the category, describe the inspection or imaging task in plain terms, and list the items you need confirmed in writing. That list is what turns a general category page into a usable quotation request.
Before payment, confirm availability, pricing and lead times in writing. No price, minimum order quantity, or lead time is stated on this site, because none of those figures has been verified for publication here. Ask for each figure that matters to your order, and keep the written reply with your order record.