Abstract: The invention relates to a computer-implemented (3) method for modeling at least one light source, comprising: a step of receiving input data (22) comprising data (24) of characteristics of materials forming the light source; and a step of creating, from data (24) of characteristics of the received materials, as well as geometric data (14) and data (26) of characteristics of light emission from the light source, a data model (16) representing the light source, said geometric data (14) describing the light source, and defining a plurality of volumes and surfaces; wherein, during the creation of the data model: the data (24) of characteristics of the materials is linked to the volumes and surfaces of the geometric data (14), and the data (26) of characteristics of light emission from the light source is linked to the surfaces of the geometric data (14); and a step of storing the data model (16) in the computer (3).

Abstract: The invention relates to a device for measuring the light intensity of an object or object portion. The device comprises a dioptric central portion and a catadioptric peripheral portion that are independent from each other and that are suitable for delivering, from the light diffused by the object, two non-intersecting beams of the same kind, and a two-dimensional video sensor associated with an imaging device in order to obtain an image of the beams.