Always readjust your focus to the infrared focusing mark when using infrared films and infrared.
当您使用红外线胶卷和红外线滤光器时，请您必须经常调整您的焦距至红外线对焦标记。
2
Infraredfocus plane array (IRFPA) is the critical part of image technology to acquire infrared image signal.
红外焦平面阵列(IRFPA)是红外成像技术中获取红外图像信号的核心光电器件。
3
The detected pyroelectric infrared signal passes through an optical filter and is focused by the swinging convex lens and the infraredfocus is also swinging slightly.