Off-axis Parabolic Mirrors

Off-axis Paraboloid mirrors, also known as paraboloid disk or object surface reflector, is usually a reflection device made of the shape formed by parabola rotation.
The shape of the paraboloid mirror comes from the geometry shaped by the paraboloid: if the incident angle entering the inner surface of the collector is equal to the reflection angle, any incident light parallel to the optical axis of the disk will be reflected to the focus. Because many types of energy can be reflected in this way, parabolic reflectors can collect and concentrate the energy entering the reflector to a special angle. Similarly, the energy radiated from the focus of the disk can also be transmitted as a beam parallel to the axis of the disk.