A light transmitting apparatus, comprises a bundle fiber configured to include a plurality of strand groups； and a control unit which controls an incidence position of light incident on an incident end-side cross-section of the bundle fiber, wherein in the bundle fiber, the plurality of strand groups are arranged so as to respectively form a plurality of incident regions on the incident end-side cross-section, and a plurality of exit regions respectively corresponding to the strand groups are arranged in a different layout from the plurality of incident regions on a cross-section on an exit end side, and the control unit is configured to be capable of changing a region, to which transmitted light is to be incident, among the plurality of incident regions by controlling the incidence position of light.
