Object information acquiring apparatus

An object information acquiring method comprising:

• a first optical measurement step of measuring fluence of light which has been emitted from a light source at an incidence side of an optical transmitter;
• a second optical measurement step of measuring fluence of light emitted from the optical transmitter;
• a scanning step of moving an emission side of the optical transmitter;
• a calculating step of calculating a conversion factor that indicates a relationship between the fluence of light measured by the first optical measurement step and the fluence of light measured by the second optical measuring step;
• a conversion step of receiving an acoustic wave that is generated from the object due to the light emitted by the optical transmitter and converting the acoustic wave into an electric signal;
• and
• a processing step of acquiring specific information about the inside of the object based on the electric signal,
• wherein the scanning step includes:
• a first scanning sub-step of moving the optical transmitter so that the optical transmitter irradiates the object with the light emitted from the light source, and
• a second scanning sub-step of moving the optical transmitter so that the fluence of light emitted from the optical transmitter is measured in the second optical measurement step,
• wherein the calculating step calculates the conversion factor based on the fluence of light measured in the first optical measurement step in the second scanning sub-step and the fluence of light measured in the second optical measurement step in the second scanning sub-step, and
• wherein the processing step acquires the specific information based on, the electric signal acquired in the first scanning sub-step, the fluence of light measured in the first optical measurement step in the first scanning sub-step, and the conversion factor.

A non-transitory computer-readable storage medium storing a program causing a computer to execute an object information acquiring method comprising:

• a first optical measurement step of measuring fluence of light which has been emitted from a light source at an incidence side of an optical transmitter;
• a second optical measurement step of measuring fluence of light emitted from the optical transmitter;
• a scanning step of moving an emission side of the optical transmitter;
• a calculating step of calculating a conversion factor that indicates a relationship between the fluence of light measured by the first optical measurement step and the fluence of light measured by the second optical measuring step;
• a conversion step of receiving an acoustic wave that is generated from the object due to the light emitted by the optical transmitter and converting the acoustic wave into an electric signal;
• and
• a processing step of acquiring specific information about the inside of the object based on the electric signal,
• wherein the scanning step includes:
• a first scanning sub-step of moving the optical transmitter so that the optical transmitter irradiates the object with the light emitted from the light source, and
• a second scanning sub-step of moving the optical transmitter so that the fluence of light emitted from the optical transmitter is measured in the second optical measurement step,
• wherein the calculating step calculates the conversion factor based on the fluence of light measured in the first optical measurement step in the second scanning sub-step and the fluence of light measured in the second optical measurement step in the second scanning sub-step, and
• wherein the processing step acquires the specific information based on, the electric signal acquired in the first scanning sub-step, the fluence of light measured in the first optical measurement step in the first scanning sub-step, and the conversion factor.