The Keyence CA-LM4 Standard Lens is a high-precision optical component engineered for machine vision systems requiring exceptional resolution and accuracy. Designed to work with 1/2″ image sensors and offering a reference magnification of x4, this lens provides outstanding optical performance while maintaining a compact and lightweight form factor.

The CA-LM4 is optimized for short working distances, with a reference WD of 70.3 mm, making it highly effective in close-up inspection applications where space is limited. At its reference magnification, it delivers a sharp and stable image, allowing vision systems to capture fine details with remarkable clarity. Its flexibility is enhanced by a magnification adjustment range of approximately ±5%, which provides users with additional control to optimize field of view and focus depending on the specific requirements of the inspection task.

Imaging performance is where the CA-LM4 excels. With a resolution of 4.5 µm, it allows for precise reproduction of intricate object features, supporting high-accuracy measurements and defect detection. The lens is also designed to minimize distortion, with a maximum TV distortion of just -0.22%, ensuring that captured images remain true to the actual shape and dimensions of the target. This makes the lens particularly suitable for applications in semiconductor inspection, electronics assembly, or precision component verification, where even minor distortion can compromise accuracy.

The CA-LM4 also provides an excellent depth of field, rated at 172 µm, which helps maintain focus stability across varying object surfaces. This is especially beneficial in scenarios where inspected objects have slight height variations, ensuring consistent sharpness without constant refocusing.

From a design perspective, the CA-LM4 is both compact and lightweight, weighing only 58 grams, making it easy to mount and integrate into a wide variety of machine vision setups. The C-mount compatibility further enhances its versatility, as it is compatible with a wide range of cameras and optical configurations commonly used in industrial environments.

Durability and reliability are also ensured, with the lens capable of operating in ambient conditions between 0 to +50 °C and humidity levels up to 80% RH (non-condensing). This ensures that it maintains consistent performance even in challenging factory environments.

In summary, the Keyence CA-LM4 Standard Lens offers a powerful combination of high magnification, precision resolution, minimal distortion, and compact design. By delivering reliable, high-quality imaging in close-range applications, it serves as a critical component for industries requiring precise visual inspection and measurement capabilities.