US 2004/0170008 A1 · Lighting apparatus and image pickup apparatus

Abstract

The present invention discloses a lighting apparatus including a light source, an optical member that is placed in front of the light source and provided with a reflecting surface for reflecting light from the light source or prism sections each made up of a refracting surface which receives the light incident from the light source and a reflecting surface for reflecting the light incident from this refracting surface. Here, in the optical member, there is a plurality of pairs of the reflecting surfaces or prism sections arranged in the direction perpendicular to the optical axis within a plane including the radial direction of the light source centered on the optical axis. The present invention can provide a low-profile lighting apparatus using light from the light source with high efficiency.

Claims23

Dependent claims

A lighting apparatus comprising:

a light source;
an optical member which is placed in front of said light source;
and
a reflection member which is placed in such a way as to cover the back of said light source and a front space between said light source and said optical member, and reflects light irradiated from said light source forward, wherein said optical member comprises:
a lens section which is placed on and close to the optical axis on the entrance surface side of said optical member and has positive refracting power;
and
a reflecting section which is placed to peripheral side of said lens section, provided closer to the optical axis than the area through which the light reflected by the part of said reflection member covering said front space passes, and reflects light from said light source forward.

4 more elements

Dependencies are inferred from the claim text.

Lighting apparatus and image pickup apparatus

Life of this patent

Lighting apparatus and image pickup apparatus

Life of this patent

Abstract

Claims23