Patent ID: 8902150
Filing Date: 2014-12-02
Classification: G09G,H05B

Abstract:
1. A lighting apparatus comprising: a plurality of light emission block groups composed of a plurality of light emission blocks, the emissions of light of which are able to be controlled independently of one another; and a detection unit that is provided for each of said light emission block groups, and detects a light emission characteristic of each of light emission blocks which belong to the corresponding light emission block group; wherein said plurality of light emission blocks are grouped in such a manner that sets of light emission blocks are formed, each one of which is selected from a plurality of different light emission block groups, with all said light emission blocks being included in any of the sets; an obtaining unit is provided which carries out control on all the sets in a sequential manner, such that a plurality of light emission blocks belonging to a same set are caused to emit light at the same time, and a light emission characteristic of each of those light emission blocks which are caused to emit light at the same time is obtained by a detection unit corresponding to a light emission block group to which each of the light emission blocks emitting light at the same time belongs; and said grouping is decided in such a manner that a minimum value, in all the sets, of a detection value ratio becomes as large as possible, wherein the detection value ratio is a ratio between an amount of light, of the total amount of light which is received by each of said detection units at the time when the plurality of light emission blocks belonging to the same set emit light at the same time, due to an emission of light from a light emission block belonging to a light emission block group corresponding to each of said detection units, and an amount of light, of said total amount of light, due to an emission of light from another light emission block which emits light simultaneously with said light emission block.