| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source device capable of irradiating a region having a desired area with luminous fluxes emitted from a plurality of light sources.SOLUTION: The light source device includes a first light source 47 emitting a first luminous flux BL, a second light source emitting a second luminous flux, a first lens 48 on which the first luminous flux BL is made incident, and a second lens on which the second luminous flux is made incident. When a surface passing through the principal point of the first lens 48 and being orthogonal to the optical axis of the first lens 48 is defined as a reference surface T, a distance S1 from the first light source 47 to the reference surface T is longer than a distance S2 from the front focus P of the first lens 48 to the reference surface T. The optical axis ax of at least one luminous flux BL of the first luminous flux BL and the second luminous flux is separated or inclined with respect to the optical axis bx of the lens 48 on which the one luminous flux BL is made incident between the first lens 48 and the second lens. |
