| 摘要 |
PROBLEM TO BE SOLVED: To provide an illumination device, and so on capable of reducing luminance unevenness of illumination light.SOLUTION: The illumination device includes a light source part including a laser light source, and an equalizing optical member including a plurality of unit lenses which are two-dimensionally arrayed to pass light emitted from the light source part side. A light passage surface of the equalizing optical member is divided into a plurality of divided regions and shape parameters of the unit lens are mutually different in each of the plurality of divided regions. Parameters in respective divided regions are set so that top parts and bottom parts in light quantity distribution formed by emission light emitted from the unit lenses are mutually annihilated by overlap of light quantity distributions obtained in each of the plurality of divided regions. |
