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comparison of sensor size image circle edge clarity and distortion in machine vision lenses
How Sensor Size Affects Machine Vision Lens Performance
Blog, Company News, Customized Optical Solutions
Introduction When customers choose a camera for a machine vision system, sensor size is often one of the first specifications they check. A larger sensor sounds attractive because it can cover a wider field of view and collect more image information. However, in real imaging systems, a larger sensor does not automatically mean better image quality. The lens must be able to support the sensor properly. If the lens image circle is not large enough, or if the lens performance drops near the edge, the final image may become worse instead of better. We have seen this in many machine vision and AOI projects. The customer upgrades the camera, but the image still has soft…
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flat-field lens vs telecentric lens for AOI inspection by VY Optics
Flat-Field Lens vs Telecentric Lens: Which Is Better for AOI Inspection?
Blog, Company News
Introduction When customers select a lens for an automated optical inspection system, they often compare two options: a flat-field lens and a telecentric lens. At first, the choice may seem simple. However, these two terms describe different optical characteristics rather than two completely opposite lens types. Optical designers use a flat-field design to improve image consistency from the center to the edge of the field. By contrast, a telecentric design helps maintain a more stable magnification when the object position or height changes. Therefore, a lens can offer flat-field performance, telecentric performance, or both. The right choice depends on what the AOI system actually needs to do. For example, some systems mainly detect surface defects,…
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flat-field machine vision lens for AOI and precision inspection with center-to-edge clarity
Flat-Field Machine Vision Lens for AOI and Precision Inspection
Blog, Company News, Customized Lens Introduction, Customized Optical Solutions, Design
Introduction In many AOI and machine vision projects, customers first care about camera resolution. This is understandable. A higher-resolution camera sounds like a direct way to see smaller defects. But in real inspection systems, the camera is only one part of the imaging chain. If the lens cannot keep the image clear and stable across the full field, the final inspection result may still be unreliable. This is especially true for AOI systems, PCB inspection, wafer inspection, display panel inspection, connector inspection, and precision component inspection. For these applications, the center of the image is not the only area that matters. Small defects may appear anywhere in the field of view. If the image becomes…
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VY Optics Dragon Boat Festival holiday notice with optical lens and traditional zongzi
Dragon Boat Festival Holiday Notice 2026
Company News
Holiday Notice Dear customers and partners, Please kindly note that our office will be closed for the Dragon Boat Festival holiday from June 19 to June 21, 2026. During this period, replies may be a little slower than usual. If you send us an inquiry about optical components, custom optical lenses, lens assembly, or opto-mechanical systems, we will get back to you as soon as possible after the holiday. Thank you for your understanding. A Small Tradition Before the Holiday Before the holiday, our company prepared traditional rice dumplings, known as zongzi, for our team. For us, it is a small but meaningful tradition. Behind every optical lens project, there are engineers, technicians, sales colleagues,…
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VY Optics Will Exhibit at Changchun Optoelectronic Expo 2026 – Visit Us at Booth A2-A20
Exhibition
Meet VY Optics in Changchun We are pleased to share that VY Optics will attend the upcoming Changchun Optoelectronic Expo, held from June 12 to June 14, 2026, at the Changchun Northeast Asia Expo Center. You can find us at: Booth: A2-A20 Date: June 12–14, 2026 Venue: Changchun Northeast Asia Expo Center As a company based in Changchun, this exhibition is also a good opportunity for us to meet local and domestic customers face to face, exchange ideas, and show what we have been working on recently. Why We Attend Optical Exhibitions For us, exhibitions are not only about showing products. They are a way to stay close to the market, understand real customer needs,…
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Flat-field lenses help AOI systems maintain clearer center-to-edge image quality and more stable inspection performance.
Why AOI Systems Miss Defects: Common Imaging Problems and Practical Solutions
Blog, Company News
Introduction In automated optical inspection (AOI) systems, missing defects is one of the most frustrating problems. Common imaging problems in AOI systems can lead to missed defects, false rejects, and unstable inspection results. The camera resolution may already be high enough. The lighting may look acceptable. The software may also have been adjusted many times. However, the inspection result is still unstable. In real production environments, we’ve seen this situation more than once. The problem is often not caused by one single part. Instead, it usually comes from the whole imaging chain: lens, sensor, lighting, working distance, and system setup. For AOI systems used in electronics, PCB inspection, display panels, connectors, precision parts, and automated…
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Best Lens Types for Automated Optical Inspection (AOI)
Blog, Company News, Customized Optical Solutions, Design
Introduction In automated optical inspection (AOI) systems, image quality directly affects inspection reliability. But in many projects, choosing the right camera gets far more attention than choosing the right lens. We’ve seen situations where customers upgraded sensors, lighting, and software multiple times, but the inspection results still remained unstable. In the end, the real limitation turned out to be the optical system itself. The lens determines: image consistency edge clarity distortion control measurement stability In AOI applications, these factors matter more than many people expect. Here I am going to share some practical thoughts on lens selection for automated optical inspection systems based on what we’ve seen in real industrial imaging projects. Choosing the right…
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Why High Resolution Cameras Still Produce Blurry Images VY Optical expert
Why High Resolution Cameras Still Produce Blurry Images
Blog, Company News, Design, Optical Engineering Services, System Solutions
Introduction One thing we’ve noticed in machine vision projects over the past few years: Higher resolution cameras do not always produce better images. In fact, some systems become even harder to optimize after upgrading the sensor. Customers sometimes expect that moving from 5MP to 12MP or even 20MP will automatically improve inspection performance. But after the upgrade, they still run into problems like: unclear edges unstable measurement results inconsistent image quality At that point, many people start questioning the camera itself. But in real projects, the camera is often only one part of the story. Image quality depends on how the entire optical system works together. In many projects, lens selection itself becomes one of…
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telecentric lens for machine vision inspection with low distortion design
How to Reduce Distortion in Machine Vision Lens Applications
Blog, Company News, Design, Opto-Mechatronic Assembly and Adjustment
Introduction In many machine vision projects, image clarity is not the main problem—distortion is. We’ve worked on several inspection systems where the image looked sharp, but measurements were still inaccurate. Edges didn’t align properly, and objects appeared slightly stretched or compressed depending on their position. In most of these cases, the issue wasn’t the camera or software. It was lens distortion. We are going to share some practical ways to reduce distortion in machine vision applications, based on what we’ve seen in real projects. What Causes Distortion in Machine Vision Systems? Distortion is mainly introduced by the optical system, especially the lens design. The most common types include: barrel distortion (image bulges outward) pincushion distortion…
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