Method, computer program, and system for measuring display light intensity of a display device

A measurement method using a measurement system, wherein

• the measurement system comprises
• a measurement device connected to an optical sensor;
• and
• a tablet information terminal independent from the measurement device and configured to communicate with the measurement device via a network communication, and
• optionally comprises an information processing device configured to communicate with the measurement device via the network communication, wherein
• a measurement engine is on operation in the measurement device,
• a Web server is on operation in the measurement device or the information processing device, and
• a Web browser is on operation in the information terminal, and
• the method comprises the steps of:
• in response to a content request by the Web browser, transmitting, by the Web server and via the network communication, to the information terminal, content comprising an image for adjustment and display control information, the display control information including next image identification information to identify an image for adjustment to be displayed next and interval information which indicates content request interval set in accordance with measurement timing of the optical sensor;
• each time the information terminal receives the content, displaying, by the Web browser, the image for adjustment included in the content on a display unit of the information terminal;
• measuring, by the measurement engine, light intensity of the display unit displaying the image for adjustment using the optical sensor;
• and
• transmitting, by the Web browser, a next content request to the Web server every time the content request interval passes;
• and
• when the Web server receives the next content request and after the measurement is completed, causing, by the measurement engine, the Web server to change the content to be transmitted into that including an image for adjustment to be displayed next, in accordance with the next image identification information.