Reflector assembly for eliminating unwanted stray lights

A reflector assembly for eliminating unwanted stray lights comprising a reflector body having a reflector body focal point on a reflector body optical axis where a light source is positioned and a front opening for receiving a lens, wherein the lens is configured to reflect light rays which emanate from the light source to strike the lens to the reflector body which is configured to reflect the light rays reflected by the lens back to the light source, and to reflect light rays which emanate from the light source and reflected by the reflector body to strike the lens back to the light source;

• wherein the reflector body is substantially parabolic so that light rays which emanate from the light source to strike the reflector body are reflected in a forward direction parallel to the reflector body optical axis, and the lens has a substantially spherically concave curvature with respect to the light source with a lens reflective focal point overlapping with the reflector body focal Point, and a radius of curvature equal to two times a distance from the lens to the lens reflective focal point, so that light rays which emanate from the light source to strike the lens are reflected by the lens in a backward direction parallel to the reflector body optical axis to the reflector body which is configured to reflect the light rays reflected by the lens back to the light source, and to reflect light rays which emanate from the light source and reflected by the reflector body to strike the lens in a direction parallel to the reflector body optical axis back to the light source.