Compact Long Focal Length Auto-Focus Lens with Actively Aligned Front Compensator

• Main Authors: Naney, Alexander J, Wittenberg, Carl D, Vinogradov, Igor, Shi, David Tsi, Gurevich, Vladimir
• Format: Patent
• Language: English
• Published: 02.05.2024

An optical assembly for an autofocus lens system for imaging an object appearing in an imaging field of view (FOV) is provided. The optical assembly includes a compensator lens assembly disposed along an optical axis, with the compensator lens assembly configured to receive light along the optical axis and to provide tuning of a flange focal length of the optical assembly. A variable focus assembly, including a variable focus optical element, is disposed along the optical axis to receive light from the compensator lens assembly. The variable focus optical element has a tunable focal plane. A fixed focus optical group is disposed along the optical axis to receive light from the variable focus assembly, the fixed focus optical group is configured to focus the light at the flange focal length of the optical assembly.