Kowa LM3QS28 | 1/2.5" 3mm Fixed Focal S-Mount Lens, F2.8, 160 lp/mm, 3.2µm Pixel, Visible to NIR (400–1000nm)

The Kowa LM3QS28 is a precision-engineered fixed focal length lens tailored for 1/2.5" machine vision sensors, delivering exceptional image clarity at 3mm focal length. Designed for high-resolution applications, it achieves a center resolution of 160 line pairs per millimeter (lp/mm) and supports pixel sizes down to 3.2µm, making it ideal for 24MP sensor equivalents in machine vision systems. The lens features a fast aperture of F2.8 to maximize light intake, supporting frame rates critical for real-time imaging tasks. Its optical coatings enable high transmission across a broad wavelength range from 400nm to 1000nm, covering visible to near-infrared (NIR) spectrum, suitable for multi-spectral and IR-sensitive cameras.

With an ultra-short back focus of 2.6mm and a focus range starting at 0.1 meters to infinity, this lens offers flexible working distances ideal for compact machine vision setups. The field of view at minimum distance provides 86.7mm horizontally and 70.6mm vertically, enabling wide area capture without sacrificing detail. The low TV distortion of 0.02% ensures minimal image warping, critical for precision measurement and inspection. Built to withstand industrial environments, the lens operates between -10°C and +50°C and weighs just 6 grams. Optional customizations include IR cut filters, modified F-stops, and glued internal elements for shock resistance.

Features:

• 3mm fixed focal length for wide-angle machine vision imaging
• Compatible with 1/2.5" sensors with 3.2µm pixel size
• High-resolution performance: 160 lp/mm center, 125 lp/mm margin
• Fast F2.8 aperture supports low-light and high-speed capture
• Low TV distortion (0.02%) for geometrically accurate images
• Broad spectral transmission from 400–1000nm (visible to NIR)
• Compact S-mount design with ultra-short 2.6mm back focus
• Focus range from 0.1m to infinity
• Lightweight at just 6 grams
• Durable operating range: -10°C to +50°C
• Optional customizations: IR cut filter, glued optics, adjusted F-stops

Applications:

• Machine vision systems
• Embedded camera modules
• Industrial inspection
• Robotics and automation
• Security surveillance systems
• Barcode and OCR scanning
• Quality control in manufacturing
• Multispectral imaging (Visible + NIR)
• Board-level imaging systems
• Compact vision systems requiring low distortion and wide field of view