Find an old dish network parabolic dish and buy some 3m solar reflective film.
Cut the pieces into pie shapes and lay them in place over the interior face of the dish.
Smooth out with a small squeegee. Trim edges from outside diameter. Voila!
Yes. Specifically, it's an f/8 parabolic mirror.
The incoming light will intersect at a focal point determined by parabolic curve of the mirror.
A parabolic mirror would do the job.
A parabolic mirror is typically used in a spotlight. This type of mirror is designed to reflect light rays in a parallel manner, concentrating the light and directing it outward in a beam.
it reflects the sun rays with a mirror so that they are concentrated on a point or a line
mirror with a concave parabolic figure
A reflecting telescope should have a parabolic mirror in which case there is no spherical aberration. The process of turning a spherical mirror surface into a parabolic one is called 'figuring'.
In the case of concave mirrors parallel rays, parallel to the principal axis and incident near the pole(axial rays), after reflection will converge to the principal focus.Rays reflected from the marginal portions of the mirror(marginal rays) will converge to points nearer than the focus. Due to this the image formed by a concave mirror of large aperture will be blurred. This defect is called spherical aberration. This defect can be overcome by using parabolic mirrors. In a parabolic mirror all the rays, axial rays as well as the marginal rays, incidenting on it after reflection will converge to the same principal focus. This is due to the geometric property of the parabola, that is parabola allows only one focus.Hence in a parabolic mirror there is no spherical aberration and the image will be sharp and clear.
A single-mirror reflector.
A parabolic mirror is shaped such that parallel incident light is reflected to a point called the focus. You will have to establish the size required, and the shape. There is an entry in Wikipedia on Parabola, giving the algebra.
A parabolic mirror is commonly used in searchlights because it can reflect light in a concentrated beam over long distances. Its curved shape helps to focus the light emitted by the searchlight into a powerful and directed beam.
A parabolic mirror with a concave shape focuses incoming light rays to a single point called the focal point. This results in a concentrated and intensified reflection of light, making the mirror useful for applications such as telescopes and satellite dishes.