Testing apparatus, testing method, and computer-readable storage medium

A testing apparatus comprising:

• a light source;
• an optical system which irradiates a plurality of light emitting elements to be tested with light emitted from the light source;
• an electrical measurement unit which measures a photoelectric signal obtained by each of the plurality of light emitting elements photoelectrically converting the light radiated by the optical system;
• at least one processor;
• a light emission control unit which uses the at least one processor to cause the plurality of light emitting elements to emit light;
• a light measurement unit which uses the at least one processor to receive the light emitted from the plurality of light emitting elements via the optical system and measures wavelengths of the received light;
• and
• a determination unit which uses the at least one processor to determine quality of the plurality of light emitting elements on a basis of a measurement result of at least one of the electrical measurement unit and the light measurement unit;
• wherein
• the optical system has
• a branched fiber having end portions on a branched side connected to the light source and the light measurement unit, and
• a lens unit including one or more lenses.

A testing method comprising:

• causing a plurality of light emitting elements to be tested to emit light;
• receiving the light emitted from the plurality of light emitting elements and measuring wavelengths of the received light;
• determining whether there is an abnormality in at least one light emitting element among the plurality of light emitting elements on a basis of intensity distributions of the wavelengths of the light, which is emitted from the plurality of light emitting elements, measured by measuring the wavelengths of the light;
• irradiating, by an optical system, a plurality of light emitting elements to be tested with light emitted from a light source;
• measuring a photoelectric signal obtained by each of the plurality of light emitting elements photoelectrically converting the light radiated by the optical system;
• causing the plurality of light emitting elements to emit light;
• receiving the light emitted from the plurality of light emitting elements via the optical system and measuring wavelengths of the received light;
• and
• determining quality of the plurality of light emitting elements on a basis of a measurement result of at least one of the measuring the photoelectric signal and the measuring the wavelengths of the light;
• wherein a branched fiber is provided to facilitate separate paths for the light emitted from the plurality of light emitting elements for measuring of the wavelengths and the irradiating of the plurality of light emitting elements from the light source.

A computer-readable storage medium having stored thereon a program that, when executed by a computer, causes the computer to perform operations comprising:

• radiating light by an optical system irradiating a plurality of light emitting elements to be tested with light emitted from a light source;
• performing electrical measurement by measuring a photoelectric signal obtained by each of the plurality of light emitting elements photoelectrically converting the light radiated by the optical system;
• controlling light emission by causing the plurality of light emitting elements to emit light;
• measuring light by receiving the light emitted from the plurality of light emitting elements via the optical system and measuring wavelengths of the received light;
• and
• determining quality of the plurality of light emitting elements on a basis of a measurement result of at least one of the performing the electrical measurement and the measuring the light;
• wherein a branched fiber is provided to facilitate separate paths for the light emitted from the plurality of light emitting elements for measuring of the wavelengths and the irradiating of the plurality of light emitting elements from the light source.