视觉检测技术，尤其是基于三角法的主动和被动视觉检测技术具有非接触、速度快、柔性好等特点，是一种先进的检测手段，适合现代制造业的需要。文章论述了视觉检测技术原理，讨论了已经研制的多个实际视觉检测系统，从不同角度展示了视觉检测技术在现代制造业中广阔的应用前景。

Visual inspection, especially, the active visual inspection and passive visual inspection based on triangulation method has advantages of non-contact, rapid speed, flexibility, etc. Visual inspection is a advanced inspection technology, satisfies modern manufacturing demands. This paper discusses the principle of visual inspection, studies several developed applied visual inspection systems, these systems demostrate wide application foreground of visual inspection from different points of view.