ghost image

The outline you saw is known as an afterimage, or ghost image.

你所见的轮廓就是所谓的「后像」或「残影」。

Ghost image has a great influence on photoelectric imaging system, as it may influence the system sensitivity and cause false signal.

在光电成像系统中，二次成像对正常图像影响较大，轻者降低系统灵敏度，重者产生虚假信号，影响观察。

Stray Light and Ghost Image in High Power Infrared Optical Systems

大功率红外光学系统中的杂散光及其鬼像分析

For solving the problem of ghost image recurred on3DTV, the light-path of lens is symmetrically divided by optical switch to obtain parallax image.

针对双镜立体照相技术重构立体图像画质模糊、图像受损、清晰度下降的问题，采用光开关对镜头光路左右对称分割，获得视差图像。