Patent ID: 8767023

Claim:
A scanning image display device, comprising: a light source configured to emit laser light; a light detecting section configured to detect the laser light; a scanning section configured to scan the laser light within a scanning area; a current controlling section configured to control laser light by supplying a current to the light source; a storage section configured to store a reference current value, a reference light output value, and a gamma table, the reference light output value corresponding to the reference current value, and the gamma table relating input brightness values of an image to image current values and being used to adjust the current supplied to the current controlling section, where the current supplied to the current controlling section is selected from the image current values; a reference current section configured to supply the reference current value to the current controlling section; a sweep section configured to sweep current values supplied to the current controlling section to obtain one current value where the detected laser light corresponds to the reference light output value when a light output detected by the light detecting section deviates from the reference light output value by a predetermined value or greater; and a change section configured to change the gamma table based on the one current value obtained by the sweep section.