Relay Lenses – High-Precision Optical Relay Lens Systems

Relay lenses are advanced optical systems engineered to transfer an image plane and/or pupil plane  from one point to another with outstanding resolution and minimal distortion. Unlike conventional imaging lenses, relay lenses offer precise control over pupil position, optical path length, and beam geometry. This makes relay lens systems essential components in complex optical assemblies that require extended image paths, beam redirection, or integration with scanning or steering mirrors.

Designed for stability and high image fidelity, relay lenses are widely used in microscopy, endoscopy, machine vision, laser scanning, metrology, and other high-accuracy imaging and illumination systems. Their ability to maintain consistent magnification and preserve image quality across long optical paths makes them ideal for applications requiring precise beam steering, wide-area inspection, or intermediate imaging stages.

Use Case: Large-Field 1X  Relay Lens System

Avantier has developed a high-performance, large-field 1X pupil relay lens featuring an externally accessible pupil. This non-focal, wide-field lens architecture allows scanning mirrors or fast steering mirrors to be placed directly at both the entrance and exit pupils, enabling rapid field switching, wide-angle scanning, and exceptional stability across the full scan range.

Key Specifications

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