LIGHTING DEVICE, LIGHTING DEVICE FOR PHOTOGRAPHY AND PHOTOGRAPHY SYSTEM

摘要

The present invention addresses the problem of providing: a lighting device that enables the modifiable range of a light distribution range (i.e., flash coverage) to be optically expanded as compared with the prior art, without the device configuration becoming complex or large; a lighting device for photography; and a photography system. In order to solve this problem, the present invention involves a lighting device (10) or a lighting device for photography (101) that is provided with light source (11) and an optical lens (13) having a prescribed refractive power, and emits light projected from the light source (11) via the optical lens (13). The present invention is characterized in that a variable focus lens (12) wherein the focus position can be changed with the lens position in a fixed state is provided between the light source (11) and the optical lens (13), and light projected from the light source (11) is made enter the optical lens (13) via the variable focus lens (12).