Detecting a night vision hidden camera in your home or office can be a challenging task, but there are some ways to do it. Firstly, you can look for any unusual or out-of-place objects in the room, especially those that have a lens, such as smoke detectors, light fixtures, or electrical outlets. Secondly, you can use a radio frequency (RF) detector or a hidden camera detector to search for any signals or transmissions that the camera may be sending out. These devices can detect the radio waves that the camera uses to transmit the footage, and can alert you to its presence. Finally, you can also look for any wires or cables that are connected to the camera, which may give it away as a hidden camera.