These substrates are mainly used as the primary mirror in a reflecting telescope or as reflection mirror of a collimating optical system light-source.
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Mirrors
These substrates are mainly used as the primary mirror in a reflecting telescope or as reflection mirror of a collimating optical system light-source.
In general, an ellipsoid has two focal points and the light that passes through one focal point also passes through the other focal point after being reflected from the elliptical surface. According to this principle, when a light source is directed to one focal point, it is possible to collect light in the other focal point.
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