Camera device, smudginess detection method, smudginess detection system and application

The invention provides a camera device, a smudginess detection method, a smudginess detection system and application, which can be used for simply and conveniently carrying out smudginess detection in an actual application scene without being influenced by external scene change. The camera device comprises a camera module; the light-transmitting cover body is arranged at the front end of the camera module in a covering manner; the light supplementing device is arranged on the side of the light-transmitting cover body, and the light supplementing device is used for emitting light to irradiate the light-transmitting cover body when the light supplementing device is in an open state. 本发明提供了一种摄像装置和脏污检测方法及其系统和应用，其能够在实际应用场景中，简单便捷地进行脏污检测，而不受外界场景变化的影响。该摄像装置，包括：摄像模组；透光盖体，该透光盖体盖设于该摄像模组的前端；以及补光装置，该补光装置被设置于该透光盖体的边侧，并且该补光装置用于在打开状态时发光以照射该透光盖体。