Image capturing illumination apparatus

An illumination apparatus, which is arrangeable so as to surround an image capturing lens, the apparatus comprising:

• when, in a state where the illumination apparatus is arranged so as to surround the image capturing lens, a direction corresponding to a radial direction of the image capturing lens is defined as a radial direction of the illumination apparatus, a direction surrounding the image capturing lens is defined as a circumferential direction of the illumination apparatus, a direction toward an object field to be captured through the image capturing lens is defined as a light projecting direction of the illumination apparatus, and a direction along an optical axis of the image capturing lens is defined as a thickness direction of the illumination apparatus,
• a light source;
• a light collector configured to direct light, which diverges from the light source, inward further than the light source in the radial direction by using a reflective surface;
• and
• a light guider provided inside further than the light source in the radial direction so as to extend in the circumferential direction and configured to guide the light from the light source toward an area extending to a side away from the light source in the circumferential direction and to cause the light from the light source to exit toward the light projecting direction,
• wherein the light collector includes two reflective surfaces each as the reflective surface on a light projecting direction side further than the light source and on an opposite side thereto in the thickness direction, the two reflective surfaces having shapes along two surfaces symmetric with each other with respect to a plane of symmetry passing through the light source, and
• the light collector is configured so that the plane of symmetry tilts to the opposite side to the light projecting direction side inward in the radial direction.

An illumination apparatus comprising:

• a first reflective portion formed to have an arc shape;
• a light source arranged outside further than the first reflective portion in a radial direction of the first reflective portion;
• a light collector configured to direct light, which diverges from the light source, inward further than the light source in the radial direction by using a reflective surface;
• a second reflective portion reflecting the light from the light source to a side away from the light source in a circumferential direction of the first reflective portion;
• and
• an exit portion where the light reflected by the first reflective portion exits,
• wherein the light collector includes, in a direction orthogonal to a plane along the radial direction, (a) a first surface provided on a closer side to the exit portion than the light source and (b) a second surface provided on a farther side from the exit portion than the light source, and
• wherein the second surface has, with respect to a plane passing through the light source along the radial direction, a larger opening angle toward the direction orthogonal to the plane along the radial direction than that of the first surface.

An illumination apparatus comprising:

• a first reflective portion formed to have an arc shape;
• a light source arranged outside further than the first reflective portion in a radial direction of the first reflective portion;
• a second reflective portion reflecting light from the light source to a side away from the light source in a circumferential direction of the first reflective portion;
• and
• an exit portion where the light reflected by the first reflective portion exits,
• wherein:
• the first reflective portion reflects the light from the light source and the light from the second reflective portion toward the exit portion;
• the first reflective portion is formed so as to be located closer to the exit portion as being located further away from the light source in the circumferential direction;
• and
• in a space facing an opposite side surface of the first reflective portion to an exit portion side surface thereof in a thickness direction of the first reflective portion, at least one of a trigger coil to start light emission of the light source, a light-receiving sensor to detect a light emission amount of the light source and a connector to which a cable making connection to the illumination apparatus is connected is provided.