Patent ID: 9366943
Filing Date: 2016-06-14
CPC Classification: G03B

Claim Text:
1. 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, and 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: a light source; a first reflective portion provided inside further than the light source in the radial direction so as to extend in the circumferential direction and reflecting light from the light source toward the light projecting direction, wherein the first reflective portion includes (1) a first area and (2) a second area extending in the circumferential direction from the first area to one circumferential side and to another circumferential side; a second reflective portion provided inside further than the light source in the radial direction so as to extend in the radial direction and reflecting the light from the light source toward an area extending to a side away from the light source in the circumferential direction, wherein the second reflective portion includes (a) a first surface that reflects part of light from the light source toward part of the second area extending to the one circumferential side and (b) a second surface that reflects another part of the light to another part of the second area extending to the other circumferential side; and a third reflective portion provided between the first surface and the second surface in the circumferential direction and reflecting light from the light source toward the light projection direction.