Illumination apparatus and image pickup apparatus

An image pickup apparatus capturing an image of an object illuminated with light from an illumination apparatus, the image pickup apparatus comprising:

• the illumination apparatus which comprises:
• a light source;
• an optical member configured to at least transmit therethrough light from the light source;
• and
• a reflective member configured to include a reflective portion which extends closer to the optical member than the light source and reflects the light from the light source to cause the light to enter the optical member,
• wherein, on a light entrance side surface of the optical member, a concave portion is formed in an outside area located outside a light entrance area where the light reflected by the reflective portion reaches, and
• wherein the concave portion includes a refractive surface refracting light, which is part of the light from the light source and reaches the concave portion without being reflected by the reflective portion, toward an exit surface of the optical member.