What shape should the reflector of the searchlight mirror have before it can be fired by a point light source, Guang Xianping?
The reflector of a searchlight is a concave mirror (parabolic or spherical) that emits Guang Xianping from a point light source.
Working principle: the searchlights played a major role in the concave mirror, reflecting surface is a concave paraboloid, the focus in front of the mirror, parallel light on it, and gathered in the mirror before the focus through its reflection; when the light source is in focus, reflecting light emitted after the parallel beam.A searchlight is composed of a light source and a reflector, and generally includes one or more optical lenses in front of the reflector. The light is first gathered through a reflector (parabolic mirror or spherical mirror) and then controlled by different positions and combinations of optical lenses, and finally projected out.
A searchlight is a device with a powerful light source and a concave mirror that focuses light on a specific direction for use in remote lighting and searching. A large beam of light can be obtained by concentrating a beam of light in a very small solid angle (usually less than 2 degrees) with a mirror or lens. Considering the size, weight and ease of operation of the device, most of the searchlights are equipped with a tripod or movable carrier, and large searchlights even have special trucks as carriers.
