KEYENCE CA-LH25 High-Resolution Wide Field Lens

As a leading high-precision industrial lens designed specifically for machine vision inspection systems, the KEYENCE CA-LH25 delivers consistent, industry-leading optical performance for automated manufacturing, quality control and precision measurement applications. Built on KEYENCE's decades of expertise in industrial imaging and automation technology, this lens is engineered to pair perfectly with KEYENCE's full line of machine vision cameras and vision systems, providing sharp, distortion-free image data to support accurate defect detection, dimensional measurement, assembly verification and other critical inspection tasks. For production lines requiring reliable, high-resolution imaging, the CA-LH25 offers the durability, optical clarity and flexibility needed to meet the demanding requirements of modern industrial automation.

Product Overview

The KEYENCE CA-LH25 is a wide-field, low-distortion lens belonging to KEYENCE's CA series of machine vision lenses, developed to address the growing demand for large field of view inspection without sacrificing image resolution. Unlike standard fixed-focal-length lenses that compromise edge clarity or introduce significant distortion when imaging large workpieces, the CA-LH25 is optimized to deliver uniform sharpness across the entire image sensor, from the center to the extreme edges of the frame. This makes it ideal for inspecting large printed circuit boards (PCBs), assembled electronic components, automotive parts, packaging materials and other large workpieces that require full-field imaging in a single shot, reducing the need for multiple image captures and improving overall inspection throughput.
KEYENCE designs every component of the CA-LH25 to meet the rigorous operating conditions of industrial manufacturing environments. From the precision-ground optical glass elements to the ruggedized mechanical housing, every part is built to withstand constant vibration, temperature fluctuations and daily wear-and-tear on production lines. Whether integrated into a fixed inspection station or mounted on a robotic arm for dynamic inspection, the CA-LH25 maintains consistent optical performance over long periods of use, minimizing maintenance requirements and reducing unplanned downtime for production operations.

Key Specifications

Core Features

1. Uniform High-Resolution Across Full Field of View

The CA-LH25 incorporates a multi-element optical design with low-dispersion glass to eliminate common optical aberrations including spherical aberration, chromatic aberration and field curvature. This ensures that every part of the captured image, from the center to the edge, maintains the same high level of sharpness and resolution. For high-resolution machine vision cameras up to 25 megapixels, the CA-LH25 can fully resolve the fine detail captured by the sensor, enabling accurate detection of small defects, micro-cracks and tiny component misalignments that would be missed by lower-quality lenses. This uniform performance across the full frame makes it easy to set up single-shot inspection of large workpieces, cutting down on cycle time and simplifying system integration.

2. Ultra-Low Distortion for Precision Measurement

Many industrial inspection applications require accurate dimensional measurement, where even small amounts of optical distortion can lead to measurement errors and incorrect quality judgments. The CA-LH25 features a specialized optical design that reduces geometric distortion to less than 0.1%, one of the lowest distortion ratings in its class. This ultra-low distortion ensures that the shape and dimensions of the workpiece are reproduced accurately in the captured image, eliminating the need for complex distortion correction algorithms and reducing measurement error. For applications like PCB dimension verification, component placement accuracy inspection and packaging size measurement, this low distortion performance directly translates to more reliable inspection results and fewer false rejects.

3. Wide Aperture for Low-Light Performance

With a maximum aperture of F2.8, the CA-LH25 can capture bright, clear images even in low-light lighting conditions, allowing manufacturers to reduce illumination power and lower energy costs while maintaining high image quality. The wide aperture also creates greater depth of field flexibility: when working with workpieces that have slight variations in height, users can adjust the aperture to balance depth of field and image brightness to meet specific application requirements. For high-speed production lines that require short exposure times to freeze motion, the wide aperture of the CA-LH25 allows for shorter exposure settings, reducing motion blur and ensuring sharp images of moving workpieces.

4. Rugged Industrial Design for Long-Term Reliability

The CA-LH25 features a durable metal housing and a secure C-mount connection that prevents loosening from vibration, a common issue in production environments with moving machinery. All optical elements are secured with precision locking mechanisms to maintain alignment over years of use, preventing shifts in focus or perspective that would degrade inspection accuracy. The lens is designed to operate reliably across a wide temperature range from 0 to 50°C, making it suitable for use in a variety of industrial environments from temperature-controlled clean rooms to unconditioned production floors. This rugged design ensures consistent performance over the lifetime of the lens, reducing the need for frequent recalibration and replacement.

5. Universal C-Mount Compatibility

Equipped with a standard C-mount interface, the CA-LH25 is compatible with nearly all industrial machine vision cameras on the market, not just KEYENCE's own camera systems. This flexibility makes it easy to integrate into existing vision systems or to mix and match components from different manufacturers to meet specific application requirements. When paired with KEYENCE CA series vision cameras and CV-X series vision systems, the CA-LH25 is optimized to deliver maximum performance, with seamless integration and pre-calibrated distortion correction data for even faster system setup.

Common Applications

• Automotive Component Inspection: Inspect full assemblies, check for correct part placement, and detect surface defects on large automotive parts such as door panels, engine components and wiring harnesses.
• Electronics Manufacturing Inspection: Full-field inspection of large printed circuit boards (PCBs), verification of component placement, solder joint inspection, and detection of micro-defects on semiconductor packaging.
• Packaging Inspection: Inspect packaging labels, barcodes, expiration date printing, and check for seal integrity and packaging defects on full packages or multi-pack products in a single capture.
• Consumer Goods Assembly Verification: Verify that all components are correctly assembled and present on finished consumer products, detect missing parts or incorrect assembly, and check for surface finish defects.
• Pharmaceutical and Medical Device Inspection: Inspect packaging for correct labeling and seal integrity, check medical device components for dimensional accuracy and defect detection, and ensure compliance with quality standards.
• Logistics and Sorting: Capture clear images of entire packages for barcode reading, dimension measurement and automated sorting in warehouse and distribution center applications.

Why Choose KEYENCE CA-LH25 From partsplc.com?

At partsplc.com, we supply only genuine original KEYENCE industrial automation components, including the CA-LH25 machine vision lens. Every product we sell is guaranteed to be authentic new original stock, with no refurbished products. We understand the critical role that reliable components play in industrial automation, which is why we rigorously inspect every product before shipment to ensure it meets KEYENCE's strict quality standards.
We offer fast global shipping to customers around the world, with tracked delivery and flexible shipping options to meet your timeline requirements. Our knowledgeable support team has years of experience with industrial machine vision components, and can answer your questions about specifications, compatibility and installation to help you get your system up and running quickly. We also offer competitive pricing on all KEYENCE products, making it easy to source the components you need without exceeding your budget.
Whether you are building a new machine vision inspection system or replacing a worn lens in an existing line, the KEYENCE CA-LH25 delivers the optical performance, reliability and durability you need for consistent, accurate inspection results. Browse our selection of genuine KEYENCE components today and place your order with partsplc.com for fast, reliable service.