China 4.0mm Manufacturers, Suppliers, Factory

In November 2023, the production of various types of lenses (security monitoring, car mounted lenses, starry lenses, etc.) at the direct factory of Shanghai Boshi exceeded 5.5 million. In December, to meet the order demand, new equipment was added and preparations were made in advance for production next year.

Picture this: You just sourced a top-tier, highly sensitive 1/2.7-inch image sensor for your new line of security cameras. You pair it with a standard M12 lens, power up the prototype, and look at the monitor. The center of the image looks fantastic! But the corners look like you’re peering through a dark, blurry tunnel. What went wrong? You’ve just fallen into the two most common traps in optical engineering: vignetting (dark corners) and uneven sharpness (soft edges). Pairing a sensor and a lens isn't just about making sure the threads screw together. It’s a precise optical marriage. If you are a procurement manager or a product engineer trying to maximize the performance of a 1/2.7" sensor without breaking the budget, here is the plain-English guide to getting that M12 lens match exactly right.

If you’re in the security field, you’ve probably heard terms like “Starlight,” “Full Color,” and “Black Light” used to describe cameras. But what do they really mean? In simple terms, these names all refer to technologies that help cameras “see” clearly at night or in low light. When there’s not enough light, cameras generally rely on two approaches to capture usable images: improving the camera’s own ability to capture light, or adding supplemental lighting.

SINGAPORE, Feb 4, 2026 — As the Asia Photonics Expo (APE 2026) kicks off today at the Sands Expo and Convention Centre, Shanghai Silk Optical Technology is proud to announce its presence as a key exhibitor.

Choosing between an F1.0 Blacklight lens and traditional IR illumination for night FPV flights is a battle of fundamental physics. We break down the real-world trade-offs in MTF, thermal drift, and color data.

The 22nd Medical Device Exhibition in 2018.