Kowa LM1.7QS56 High-Resolution S-Mount 1.7mm Fixed Lens for 1/2.5" Sensor Machine Vision Systems

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The Kowa LM1.7QS56 is a precision-engineered 1.7mm fixed focal length lens designed for use with compact vision systems and embedded imaging devices. Featuring an S-Mount interface, this lens supports 1/2.5" image sensors and delivers an exceptional 160 lp/mm center resolution, with 100 lp/mm at the edge. It offers sharp imaging across the frame and maintains minimal TV distortion of just -0.32%, making it ideal for tasks requiring high geometric accuracy such as object recognition, edge detection, and dimensional measurement.

Optimized for industrial and OEM vision platforms, the LM1.7QS56 has a focus range from 0.1 meters to infinity and a 4.0mm back focus in air. The standard aperture is f/5.6, and the lens performs reliably in environments ranging from -10°C to +50°C. Customization is available upon request, including alternate f-stop values, integrated IR-cut filters, and element gluing to increase vibration resistance. The LM1.7QS56 is part of Kowa’s LM-Q series and is purpose-built for high-resolution machine vision applications requiring compact optics.

Features:

• 1.7mm fixed focal length
• Designed for 1/2.5" CMOS sensors
• S-Mount (M12) compact lens design
• High 160 lp/mm center resolution
• Edge resolution of 100 lp/mm
• Aperture: f/5.6
• Focus range from 0.1m to infinity
• 4.0mm back focus in air
• Minimal TV distortion: -0.32%
• Operating temp: -10°C to +50°C
• Optional IR filter or glued optics for shock resistance
• Lightweight design for embedded systems

Applications:

• Compact machine vision systems
• Embedded vision in robotics
• Image processing and quality inspection
• Industrial automation systems
• Barcode scanning and identification
• Visual alignment and positioning tasks
• Space-constrained optical platforms
• OEM sensor modules and boards

Specification Details Focal Length 1.7mm Mount S-Mount Sensor Size 1/2.5" Resolution (Center) 160 lp/mm Resolution (Edge) 100 lp/mm Aperture (F-stop) f/5.6 Focus Range 0.1 m – ∞ Back Focus (Air) 4.0 mm TV Distortion -0.32% Operating Temperature -10°C to +50°C Lens Type Fixed Focal Series LM1.7Q