# Miniature camera module with a hollow linear ultrasonic motor-based focus feature

> Research article (Sensors and Actuators A Physical, 2023) · cited 25× · AI/ML

**Wikidata**: [openalex:W4320913253](https://www.wikidata.org/wiki/openalex:W4320913253)  
**Source**: https://4ort.xyz/entity/miniature-camera-module-with-a-hollow-linear-ultrasonic-motor-based-focus-feature