Light emitting device, optical measurement apparatus, and image forming apparatus

A light emitting device comprising:

• a plurality of transfer elements to be sequentially turned on;
• a plurality of setting elements that are respectively connected to the plurality of transfer elements and are capable of shifting to an on-state by the transfer element being turned on;
• a plurality of driving elements that are respectively connected to the plurality of setting elements and are capable of shifting to the on-state by the setting element being turned on;
• and
• a plurality of light emitting elements that are respectively connected to the plurality of driving elements and have increased light-emission or an increased light-emission intensity by the driving element being turned on,
• wherein a plurality of pairs of the driving element and the light emitting element are connected to at least one of the plurality of setting elements and the plurality of light emitting elements are arranged in a two-dimensional shape.